Iredell Water Corporation

PFAS monitoring results for a public water system in North Carolina

NC0149025UCMR 5EPA monitoring data
18.8Highest PFOA result, ppt
4.9Highest PFOS result, ppt
0.36Highest Hazard Index
2,400Results
PWSID
NC0149025
State
North Carolina
System type
community water system (CWS)
Population served
29,370
City
Statesville
Counties
Iredell County
Primary source water
surface water (purchased)
UCMR 5 sampling
2024-04-02 to 2025-03-03 · 38 entry point(s) · water types: GW;SW
Service-area boundary
authoritative

PFOA ≥ 3 × its limit highest single result
PFOA ≥ 3 × its limit worst entry-point average

These are monitoring results collected under EPA's Fifth Unregulated Contaminant Monitoring Rule (UCMR 5) at entry points, where treated water enters the distribution system; they are not tap-water samples. They are not compliance determinations: compliance with EPA's 2024 PFAS limits is judged on running annual averages of compliance monitoring, required from 2029, so a single UCMR 5 result at or above a limit is not a violation. “< MRL” means the compound was not quantified at EPA's minimum reporting level; it does not mean zero.

Water purchased from

Seller results are the seller's own entry-point samples, not measurements of this system's water. This system's own samples (below) may reflect purchased water, its own sources, or both.

Compared with EPA's 2024 values

Highest single resultWorst entry-point average*Limit
PFOA (ppt)18.813.64
PFOS (ppt)4.94.74
Hazard Index0.360.341.0†

“<MRL” = every result for the compound was below its reporting limit. * Mean of all samples at each entry point with non-detects = 0 (EPA compliance convention; the Hazard Index also uses non-detects = 0); a screening comparison, not a formal running annual average. † Rescission proposed May 2026. PFOA/PFOS MCL 4 ppt (2024 NPDWR, in effect). PFHxS, PFNA, HFPO-DA (10 ppt each) and the Hazard Index (1.0) are 2024 NPDWR values; EPA proposed rescinding them on 18 May 2026 (comment period closed 20 Jul 2026).

No North Carolina PFAS drinking-water standard in effect or proposed as of 2026-10-17: No state PFAS drinking-water MCL in effect; S.B. 384 (2025) filed, not enacted; DEQ implementing federal NPDWR.

Sampling history

Sampled 2024-04-02 to 2025-03-03 · 38 entry point(s) · water types: GW;SW · 96 sampling visits. PFAS in ppt (ng/L).

DateEntry pointEventPFOAPFOSHIOther detections
2024-04-02IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-04-02IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-04-02IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-04-02IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-04-02IREDELL WATER CORPORATION (GW)SE1n/an/an/anone
2024-04-08IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-04-08IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-04-08IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-04-08IREDELL WATER CORPORATION (GW)SE1<44.30.36none
2024-04-08IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-04-08IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-04-08IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-04-08IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-04-08IREDELL WATER CORPORATION (GW)SE1n/an/an/anone
2024-04-15IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-04-15IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-04-15IREDELL WATER CORPORATION (GW)SE1n/an/an/anone
2024-04-15IREDELL WATER CORPORATION (GW)SE1n/an/an/anone
2024-04-15IREDELL WATER CORPORATION (GW)SE1n/an/an/anone
2024-04-15IREDELL WATER CORPORATION (GW)SE1n/an/an/anone
2024-04-15IREDELL WATER CORPORATION (GW)SE1n/an/an/anone
2024-04-15IREDELL WATER CORPORATION (GW)SE1n/an/an/anone
2024-04-15IREDELL WATER CORPORATION (SW)SE1n/an/an/anone
2024-04-22IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-04-22IREDELL WATER CORPORATION (GW)SE184.80.313PFHxA 3.9, PFPeA 3.9
2024-04-22IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-04-22IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-04-22IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-04-22IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-04-22IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-04-22IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-04-22IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-04-22IREDELL WATER CORPORATION (SW)SE1<4<40none
2024-04-22IREDELL WATER CORPORATION (GW)SE1n/an/an/anone
2024-04-22IREDELL WATER CORPORATION (GW)SE1n/an/an/anone
2024-04-22IREDELL WATER CORPORATION (GW)SE1n/an/an/anone
2024-04-22IREDELL WATER CORPORATION (GW)SE1n/an/an/anone
2024-04-22IREDELL WATER CORPORATION (GW)SE1n/an/an/anone
2024-04-23IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-05-01IREDELL WATER CORPORATION (GW)SE15.74.50none
2024-05-20IREDELL WATER CORPORATION (GW)SE118.8<40PFBA 14.7, PFHpA 9.9, PFHxA 30.5, PFPeA 60.6
2024-05-20IREDELL WATER CORPORATION (GW)SE1<4<40PFHxA 3
2024-05-20IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-05-20IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-05-20IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-05-20IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-05-20IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-05-20IREDELL WATER CORPORATION (SW)SE1<4<40none
2024-05-21IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-05-21IREDELL WATER CORPORATION (GW)SE15.74.50.003PFHxA 4.6, PFPeA 5
2024-07-09IREDELL WATER CORPORATION (GW)SE1<4<40none
2024-07-09IREDELL WATER CORPORATION (SW)SE2n/an/an/anone
2024-07-09IREDELL WATER CORPORATION (SW)SE2n/an/an/anone
2024-08-06IREDELL WATER CORPORATION (SW)SE2<4<40none
2024-08-06IREDELL WATER CORPORATION (SW)SE2<4<40none
2024-10-14IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-14IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-14IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-14IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-14IREDELL WATER CORPORATION (GW)SE2<44.30.32none
2024-10-14IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-14IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-14IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-14IREDELL WATER CORPORATION (GW)SE25<40none
2024-10-14IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-14IREDELL WATER CORPORATION (GW)SE2<4<40lithium 9.06 µg/L
2024-10-14IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-14IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-14IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-15IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-15IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-15IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-15IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-15IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-15IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-15IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-15IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-15IREDELL WATER CORPORATION (SW)SE3<4<40none
2024-10-22IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-22IREDELL WATER CORPORATION (GW)SE26.6<40.003PFHxA 3.3, PFPeA 3.2
2024-10-22IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-22IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-22IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-22IREDELL WATER CORPORATION (GW)SE264.90.003PFHxA 5.6, PFPeA 5.9
2024-10-22IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-23IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-23IREDELL WATER CORPORATION (GW)SE28.4<40PFBA 6.2, PFHpA 4.1, PFHxA 11.6, PFPeA 22.3
2024-10-23IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-23IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-23IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-23IREDELL WATER CORPORATION (GW)SE2<4<40none
2024-10-23IREDELL WATER CORPORATION (GW)SE2<4<40.002none
2024-10-23IREDELL WATER CORPORATION (SW)SE3<4<40none
2025-01-07IREDELL WATER CORPORATION (SW)SE4<4<40none
2025-01-07IREDELL WATER CORPORATION (SW)SE4<4<40none
2025-03-03IREDELL WATER CORPORATION (GW)SE1<4<40none

“<4” = not detected at the reporting limit shown; “n/a” = not analyzed in that sample. Highlighted = at or above the 4 ppt MCL. HI computed per sample with non-detects as 0. Other detections lists every other quantified compound (lithium in µg/L).

All results by entry point

2400 results. Each column is one sampling visit (date and UCMR 5 sample event). A number is a measured concentration; “< 4” = below the minimum reporting level shown; “–” = not analyzed in that visit. PFAS in ppt (ng/L); lithium in µg/L.

IREDELL WATER CORPORATION facility P01 · sample point E01 · groundwater

CompoundMRL2024-04-08
SE1
2024-10-14
SE2
11Cl-PF3OUdS5 ppt< 5< 5
4:2 FTS3 ppt< 3< 3
6:2 FTS5 ppt< 5< 5
8:2 FTS5 ppt< 5< 5
9Cl-PF3ONS2 ppt< 2< 2
ADONA3 ppt< 3< 3
HFPO-DA5 ppt< 5< 5
NEtFOSAA5 ppt< 5< 5
NFDHA20 ppt< 20< 20
NMeFOSAA6 ppt< 6< 6
PFBA5 ppt< 5< 5
PFBS3 ppt< 3< 3
PFDA3 ppt< 3< 3
PFDoA3 ppt< 3< 3
PFEESA3 ppt< 3< 3
PFHpA3 ppt< 3< 3
PFHpS3 ppt< 3< 3
PFHxA3 ppt< 3< 3
PFHxS3 ppt< 3< 3
PFMBA3 ppt< 3< 3
PFMPA4 ppt< 4< 4
PFNA4 ppt< 4< 4
PFOA4 ppt< 4< 4
PFOS4 ppt< 4< 4
PFPeA3 ppt< 3< 3
PFPeS4 ppt< 4< 4
PFTA8 ppt< 8< 8
PFTrDA7 ppt< 7< 7
PFUnA2 ppt< 2< 2
lithium9 µg/L< 9< 9

IREDELL WATER CORPORATION facility P02 · sample point E02 · groundwater

CompoundMRL2024-04-22
SE1
2024-10-22
SE2
11Cl-PF3OUdS5 ppt< 5< 5
4:2 FTS3 ppt< 3< 3
6:2 FTS5 ppt< 5< 5
8:2 FTS5 ppt< 5< 5
9Cl-PF3ONS2 ppt< 2< 2
ADONA3 ppt< 3< 3
HFPO-DA5 ppt< 5< 5
NEtFOSAA5 ppt< 5< 5
NFDHA20 ppt< 20< 20
NMeFOSAA6 ppt< 6< 6
PFBA5 ppt< 5< 5
PFBS3 ppt< 3< 3
PFDA3 ppt< 3< 3
PFDoA3 ppt< 3< 3
PFEESA3 ppt< 3< 3
PFHpA3 ppt< 3< 3
PFHpS3 ppt< 3< 3
PFHxA3 ppt< 3< 3
PFHxS3 ppt< 3< 3
PFMBA3 ppt< 3< 3
PFMPA4 ppt< 4< 4
PFNA4 ppt< 4< 4
PFOA4 ppt< 4< 4
PFOS4 ppt< 4< 4
PFPeA3 ppt< 3< 3
PFPeS4 ppt< 4< 4
PFTA8 ppt< 8< 8
PFTrDA7 ppt< 7< 7
PFUnA2 ppt< 2< 2
lithium9 µg/L< 9< 9

IREDELL WATER CORPORATION facility P04 · sample point E04 · groundwater

CompoundMRL2024-04-08
SE1
2024-10-14
SE2
11Cl-PF3OUdS5 ppt< 5< 5
4:2 FTS3 ppt< 3< 3
6:2 FTS5 ppt< 5< 5
8:2 FTS5 ppt< 5< 5
9Cl-PF3ONS2 ppt< 2< 2
ADONA3 ppt< 3< 3
HFPO-DA5 ppt< 5< 5
NEtFOSAA5 ppt< 5< 5
NFDHA20 ppt< 20< 20
NMeFOSAA6 ppt< 6< 6
PFBA5 ppt< 5< 5
PFBS3 ppt< 3< 3
PFDA3 ppt< 3< 3
PFDoA3 ppt< 3< 3
PFEESA3 ppt< 3< 3
PFHpA3 ppt< 3< 3
PFHpS3 ppt< 3< 3
PFHxA3 ppt< 3< 3
PFHxS3 ppt< 3< 3
PFMBA3 ppt< 3< 3
PFMPA4 ppt< 4< 4
PFNA4 ppt< 4< 4
PFOA4 ppt< 4< 4
PFOS4 ppt< 4< 4
PFPeA3 ppt< 3< 3
PFPeS4 ppt< 4< 4
PFTA8 ppt< 8< 8
PFTrDA7 ppt< 7< 7
PFUnA2 ppt< 2< 2
lithium9 µg/L< 9< 9

IREDELL WATER CORPORATION facility P05 · sample point E05 · groundwater

CompoundMRL2024-04-02
SE1
2024-10-14
SE2
11Cl-PF3OUdS5 ppt< 5< 5
4:2 FTS3 ppt< 3< 3
6:2 FTS5 ppt< 5< 5
8:2 FTS5 ppt< 5< 5
9Cl-PF3ONS2 ppt< 2< 2
ADONA3 ppt< 3< 3
HFPO-DA5 ppt< 5< 5
NEtFOSAA5 ppt< 5< 5
NFDHA20 ppt< 20< 20
NMeFOSAA6 ppt< 6< 6
PFBA5 ppt< 5< 5
PFBS3 ppt< 3< 3
PFDA3 ppt< 3< 3
PFDoA3 ppt< 3< 3
PFEESA3 ppt< 3< 3
PFHpA3 ppt< 3< 3
PFHpS3 ppt< 3< 3
PFHxA3 ppt< 3< 3
PFHxS3 ppt< 3< 3
PFMBA3 ppt< 3< 3
PFMPA4 ppt< 4< 4
PFNA4 ppt< 4< 4
PFOA4 ppt< 4< 4
PFOS4 ppt< 4< 4
PFPeA3 ppt< 3< 3
PFPeS4 ppt< 4< 4
PFTA8 ppt< 8< 8
PFTrDA7 ppt< 7< 7
PFUnA2 ppt< 2< 2
lithium9 µg/L< 9< 9

IREDELL WATER CORPORATION facility P06 · sample point E06 · groundwater

CompoundMRL2024-04-08
SE1
2024-10-14
SE2
11Cl-PF3OUdS5 ppt< 5< 5
4:2 FTS3 ppt< 3< 3
6:2 FTS5 ppt< 5< 5
8:2 FTS5 ppt< 5< 5
9Cl-PF3ONS2 ppt< 2< 2
ADONA3 ppt< 3< 3
HFPO-DA5 ppt< 5< 5
NEtFOSAA5 ppt< 5< 5
NFDHA20 ppt< 20< 20
NMeFOSAA6 ppt< 6< 6
PFBA5 ppt< 5< 5
PFBS3 ppt< 3< 3
PFDA3 ppt< 3< 3
PFDoA3 ppt< 3< 3
PFEESA3 ppt< 3< 3
PFHpA3 ppt< 3< 3
PFHpS3 ppt< 3< 3
PFHxA3 ppt< 3< 3
PFHxS3 ppt< 3< 3
PFMBA3 ppt< 3< 3
PFMPA4 ppt< 4< 4
PFNA4 ppt< 4< 4
PFOA4 ppt< 4< 4
PFOS4 ppt< 4< 4
PFPeA3 ppt< 3< 3
PFPeS4 ppt< 4< 4
PFTA8 ppt< 8< 8
PFTrDA7 ppt< 7< 7
PFUnA2 ppt< 2< 2
lithium9 µg/L< 9< 9

IREDELL WATER CORPORATION facility P10 · sample point E10 · groundwater

CompoundMRL2024-04-22
SE1
2024-10-22
SE2
PFBS3 ppt6.15.1
PFHxA3 ppt3.93.3
PFHxS3 ppt3.1< 3
PFOA4 ppt86.6
PFOS4 ppt4.8< 4
PFPeA3 ppt3.93.2
11Cl-PF3OUdS5 ppt< 5< 5
4:2 FTS3 ppt< 3< 3
6:2 FTS5 ppt< 5< 5
8:2 FTS5 ppt< 5< 5
9Cl-PF3ONS2 ppt< 2< 2
ADONA3 ppt< 3< 3
HFPO-DA5 ppt< 5< 5
NEtFOSAA5 ppt< 5< 5
NFDHA20 ppt< 20< 20
NMeFOSAA6 ppt< 6< 6
PFBA5 ppt< 5< 5
PFDA3 ppt< 3< 3
PFDoA3 ppt< 3< 3
PFEESA3 ppt< 3< 3
PFHpA3 ppt< 3< 3
PFHpS3 ppt< 3< 3
PFMBA3 ppt< 3< 3
PFMPA4 ppt< 4< 4
PFNA4 ppt< 4< 4
PFPeS4 ppt< 4< 4
PFTA8 ppt< 8< 8
PFTrDA7 ppt< 7< 7
PFUnA2 ppt< 2< 2
lithium9 µg/L< 9< 9

IREDELL WATER CORPORATION facility P11 · sample point E11 · groundwater

CompoundMRL2024-04-08
SE1
2024-10-14
SE2
PFHxS3 ppt3.63.2
PFOS4 ppt4.34.3
11Cl-PF3OUdS5 ppt< 5< 5
4:2 FTS3 ppt< 3< 3
6:2 FTS5 ppt< 5< 5
8:2 FTS5 ppt< 5< 5
9Cl-PF3ONS2 ppt< 2< 2
ADONA3 ppt< 3< 3
HFPO-DA5 ppt< 5< 5
NEtFOSAA5 ppt< 5< 5
NFDHA20 ppt< 20< 20
NMeFOSAA6 ppt< 6< 6
PFBA5 ppt< 5< 5
PFBS3 ppt< 3< 3
PFDA3 ppt< 3< 3
PFDoA3 ppt< 3< 3
PFEESA3 ppt< 3< 3
PFHpA3 ppt< 3< 3
PFHpS3 ppt< 3< 3
PFHxA3 ppt< 3< 3
PFMBA3 ppt< 3< 3
PFMPA4 ppt< 4< 4
PFNA4 ppt< 4< 4
PFOA4 ppt< 4< 4
PFPeA3 ppt< 3< 3
PFPeS4 ppt< 4< 4
PFTA8 ppt< 8< 8
PFTrDA7 ppt< 7< 7
PFUnA2 ppt< 2< 2
lithium9 µg/L< 9< 9

IREDELL WATER CORPORATION facility P12 · sample point E12 · groundwater

CompoundMRL2024-04-08
SE1
2024-10-14
SE2
11Cl-PF3OUdS5 ppt< 5< 5
4:2 FTS3 ppt< 3< 3
6:2 FTS5 ppt< 5< 5
8:2 FTS5 ppt< 5< 5
9Cl-PF3ONS2 ppt< 2< 2
ADONA3 ppt< 3< 3
HFPO-DA5 ppt< 5< 5
NEtFOSAA5 ppt< 5< 5
NFDHA20 ppt< 20< 20
NMeFOSAA6 ppt< 6< 6
PFBA5 ppt< 5< 5
PFBS3 ppt< 3< 3
PFDA3 ppt< 3< 3
PFDoA3 ppt< 3< 3
PFEESA3 ppt< 3< 3
PFHpA3 ppt< 3< 3
PFHpS3 ppt< 3< 3
PFHxA3 ppt< 3< 3
PFHxS3 ppt< 3< 3
PFMBA3 ppt< 3< 3
PFMPA4 ppt< 4< 4
PFNA4 ppt< 4< 4
PFOA4 ppt< 4< 4
PFOS4 ppt< 4< 4
PFPeA3 ppt< 3< 3
PFPeS4 ppt< 4< 4
PFTA8 ppt< 8< 8
PFTrDA7 ppt< 7< 7
PFUnA2 ppt< 2< 2
lithium9 µg/L< 9< 9

IREDELL WATER CORPORATION facility P13 · sample point E13 · groundwater

CompoundMRL2024-04-22
SE1
2024-10-23
SE2
11Cl-PF3OUdS5 ppt< 5< 5
4:2 FTS3 ppt< 3< 3
6:2 FTS5 ppt< 5< 5
8:2 FTS5 ppt< 5< 5
9Cl-PF3ONS2 ppt< 2< 2
ADONA3 ppt< 3< 3
HFPO-DA5 ppt< 5< 5
NEtFOSAA5 ppt< 5< 5
NFDHA20 ppt< 20< 20
NMeFOSAA6 ppt< 6< 6
PFBA5 ppt< 5< 5
PFBS3 ppt< 3< 3
PFDA3 ppt< 3< 3
PFDoA3 ppt< 3< 3
PFEESA3 ppt< 3< 3
PFHpA3 ppt< 3< 3
PFHpS3 ppt< 3< 3
PFHxA3 ppt< 3< 3
PFHxS3 ppt< 3< 3
PFMBA3 ppt< 3< 3
PFMPA4 ppt< 4< 4
PFNA4 ppt< 4< 4
PFOA4 ppt< 4< 4
PFOS4 ppt< 4< 4
PFPeA3 ppt< 3< 3
PFPeS4 ppt< 4< 4
PFTA8 ppt< 8< 8
PFTrDA7 ppt< 7< 7
PFUnA2 ppt< 2< 2
lithium9 µg/L< 9< 9

IREDELL WATER CORPORATION facility P14 · sample point E14 · groundwater

CompoundMRL2024-04-02
SE1
2024-10-14
SE2
11Cl-PF3OUdS5 ppt< 5< 5
4:2 FTS3 ppt< 3< 3
6:2 FTS5 ppt< 5< 5
8:2 FTS5 ppt< 5< 5
9Cl-PF3ONS2 ppt< 2< 2
ADONA3 ppt< 3< 3
HFPO-DA5 ppt< 5< 5
NEtFOSAA5 ppt< 5< 5
NFDHA20 ppt< 20< 20
NMeFOSAA6 ppt< 6< 6
PFBA5 ppt< 5< 5
PFBS3 ppt< 3< 3
PFDA3 ppt< 3< 3
PFDoA3 ppt< 3< 3
PFEESA3 ppt< 3< 3
PFHpA3 ppt< 3< 3
PFHpS3 ppt< 3< 3
PFHxA3 ppt< 3< 3
PFHxS3 ppt< 3< 3
PFMBA3 ppt< 3< 3
PFMPA4 ppt< 4< 4
PFNA4 ppt< 4< 4
PFOA4 ppt< 4< 4
PFOS4 ppt< 4< 4
PFPeA3 ppt< 3< 3
PFPeS4 ppt< 4< 4
PFTA8 ppt< 8< 8
PFTrDA7 ppt< 7< 7
PFUnA2 ppt< 2< 2
lithium9 µg/L< 9< 9

IREDELL WATER CORPORATION facility P15 · sample point E15 · groundwater

CompoundMRL2024-04-02
SE1
2024-10-14
SE2
11Cl-PF3OUdS5 ppt< 5< 5
4:2 FTS3 ppt< 3< 3
6:2 FTS5 ppt< 5< 5
8:2 FTS5 ppt< 5< 5
9Cl-PF3ONS2 ppt< 2< 2
ADONA3 ppt< 3< 3
HFPO-DA5 ppt< 5< 5
NEtFOSAA5 ppt< 5< 5
NFDHA20 ppt< 20< 20
NMeFOSAA6 ppt< 6< 6
PFBA5 ppt< 5< 5
PFBS3 ppt< 3< 3
PFDA3 ppt< 3< 3
PFDoA3 ppt< 3< 3
PFEESA3 ppt< 3< 3
PFHpA3 ppt< 3< 3
PFHpS3 ppt< 3< 3
PFHxA3 ppt< 3< 3
PFHxS3 ppt< 3< 3
PFMBA3 ppt< 3< 3
PFMPA4 ppt< 4< 4
PFNA4 ppt< 4< 4
PFOA4 ppt< 4< 4
PFOS4 ppt< 4< 4
PFPeA3 ppt< 3< 3
PFPeS4 ppt< 4< 4
PFTA8 ppt< 8< 8
PFTrDA7 ppt< 7< 7
PFUnA2 ppt< 2< 2
lithium9 µg/L< 9< 9

IREDELL WATER CORPORATION facility P16 · sample point E16 · groundwater

CompoundMRL2024-04-22
SE1
2024-05-20
SE1
2024-10-23
SE2
PFBA5 ppt–14.76.2
PFHpA3 ppt–9.94.1
PFHxA3 ppt–30.511.6
PFOA4 ppt–18.88.4
PFPeA3 ppt–60.622.3
11Cl-PF3OUdS5 ppt–< 5< 5
4:2 FTS3 ppt–< 3< 3
6:2 FTS5 ppt–< 5< 5
8:2 FTS5 ppt–< 5< 5
9Cl-PF3ONS2 ppt–< 2< 2
ADONA3 ppt–< 3< 3
HFPO-DA5 ppt–< 5< 5
NEtFOSAA5 ppt< 5–< 5
NFDHA20 ppt–< 20< 20
NMeFOSAA6 ppt< 6–< 6
PFBS3 ppt–< 3< 3
PFDA3 ppt–< 3< 3
PFDoA3 ppt–< 3< 3
PFEESA3 ppt–< 3< 3
PFHpS3 ppt–< 3< 3
PFHxS3 ppt–< 3< 3
PFMBA3 ppt–< 3< 3
PFMPA4 ppt–< 4< 4
PFNA4 ppt–< 4< 4
PFOS4 ppt–< 4< 4
PFPeS4 ppt–< 4< 4
PFTA8 ppt< 8–< 8
PFTrDA7 ppt< 7–< 7
PFUnA2 ppt–< 2< 2
lithium9 µg/L< 9–< 9

IREDELL WATER CORPORATION facility P18 · sample point E18 · groundwater

CompoundMRL2024-04-15
SE1
2024-05-20
SE1
2024-10-15
SE2
PFHxA3 ppt–3< 3
11Cl-PF3OUdS5 ppt–< 5< 5
4:2 FTS3 ppt–< 3< 3
6:2 FTS5 ppt–< 5< 5
8:2 FTS5 ppt–< 5< 5
9Cl-PF3ONS2 ppt–< 2< 2
ADONA3 ppt–< 3< 3
HFPO-DA5 ppt–< 5< 5
NEtFOSAA5 ppt< 5–< 5
NFDHA20 ppt–< 20< 20
NMeFOSAA6 ppt< 6–< 6
PFBA5 ppt–< 5< 5
PFBS3 ppt–< 3< 3
PFDA3 ppt–< 3< 3
PFDoA3 ppt–< 3< 3
PFEESA3 ppt–< 3< 3
PFHpA3 ppt–< 3< 3
PFHpS3 ppt–< 3< 3
PFHxS3 ppt–< 3< 3
PFMBA3 ppt–< 3< 3
PFMPA4 ppt–< 4< 4
PFNA4 ppt–< 4< 4
PFOA4 ppt–< 4< 4
PFOS4 ppt–< 4< 4
PFPeA3 ppt–< 3< 3
PFPeS4 ppt–< 4< 4
PFTA8 ppt< 8–< 8
PFTrDA7 ppt< 7–< 7
PFUnA2 ppt–< 2< 2
lithium9 µg/L< 9–< 9

IREDELL WATER CORPORATION facility P19 · sample point E19 · groundwater

CompoundMRL2024-04-22
SE1
2024-05-21
SE1
2024-10-23
SE2
11Cl-PF3OUdS5 ppt–< 5< 5
4:2 FTS3 ppt–< 3< 3
6:2 FTS5 ppt–< 5< 5
8:2 FTS5 ppt–< 5< 5
9Cl-PF3ONS2 ppt–< 2< 2
ADONA3 ppt–< 3< 3
HFPO-DA5 ppt–< 5< 5
NEtFOSAA5 ppt< 5–< 5
NFDHA20 ppt–< 20< 20
NMeFOSAA6 ppt< 6–< 6
PFBA5 ppt–< 5< 5
PFBS3 ppt–< 3< 3
PFDA3 ppt–< 3< 3
PFDoA3 ppt–< 3< 3
PFEESA3 ppt–< 3< 3
PFHpA3 ppt–< 3< 3
PFHpS3 ppt–< 3< 3
PFHxA3 ppt–< 3< 3
PFHxS3 ppt–< 3< 3
PFMBA3 ppt–< 3< 3
PFMPA4 ppt–< 4< 4
PFNA4 ppt–< 4< 4
PFOA4 ppt–< 4< 4
PFOS4 ppt–< 4< 4
PFPeA3 ppt–< 3< 3
PFPeS4 ppt–< 4< 4
PFTA8 ppt< 8–< 8
PFTrDA7 ppt< 7–< 7
PFUnA2 ppt–< 2< 2
lithium9 µg/L< 9–< 9

IREDELL WATER CORPORATION facility P20 · sample point E20 · groundwater

CompoundMRL2024-04-22
SE1
2024-10-22
SE2
11Cl-PF3OUdS5 ppt< 5< 5
4:2 FTS3 ppt< 3< 3
6:2 FTS5 ppt< 5< 5
8:2 FTS5 ppt< 5< 5
9Cl-PF3ONS2 ppt< 2< 2
ADONA3 ppt< 3< 3
HFPO-DA5 ppt< 5< 5
NEtFOSAA5 ppt< 5< 5
NFDHA20 ppt< 20< 20
NMeFOSAA6 ppt< 6< 6
PFBA5 ppt< 5< 5
PFBS3 ppt< 3< 3
PFDA3 ppt< 3< 3
PFDoA3 ppt< 3< 3
PFEESA3 ppt< 3< 3
PFHpA3 ppt< 3< 3
PFHpS3 ppt< 3< 3
PFHxA3 ppt< 3< 3
PFHxS3 ppt< 3< 3
PFMBA3 ppt< 3< 3
PFMPA4 ppt< 4< 4
PFNA4 ppt< 4< 4
PFOA4 ppt< 4< 4
PFOS4 ppt< 4< 4
PFPeA3 ppt< 3< 3
PFPeS4 ppt< 4< 4
PFTA8 ppt< 8< 8
PFTrDA7 ppt< 7< 7
PFUnA2 ppt< 2< 2
lithium9 µg/L< 9< 9

IREDELL WATER CORPORATION facility P21 · sample point E21 · groundwater

CompoundMRL2024-04-08
SE1
2024-05-01
SE1
2024-10-14
SE2
PFOA4 ppt–5.75
PFOS4 ppt–4.5< 4
11Cl-PF3OUdS5 ppt–< 5< 5
4:2 FTS3 ppt–< 3< 3
6:2 FTS5 ppt–< 5< 5
8:2 FTS5 ppt–< 5< 5
9Cl-PF3ONS2 ppt–< 2< 2
ADONA3 ppt–< 3< 3
HFPO-DA5 ppt–< 5< 5
NEtFOSAA5 ppt< 5–< 5
NFDHA20 ppt–< 20< 20
NMeFOSAA6 ppt< 6–< 6
PFBA5 ppt–< 5< 5
PFBS3 ppt–< 3< 3
PFDA3 ppt–< 3< 3
PFDoA3 ppt–< 3< 3
PFEESA3 ppt–< 3< 3
PFHpA3 ppt–< 3< 3
PFHpS3 ppt–< 3< 3
PFHxA3 ppt–< 3< 3
PFHxS3 ppt–< 3< 3
PFMBA3 ppt–< 3< 3
PFMPA4 ppt–< 4< 4
PFNA4 ppt–< 4< 4
PFPeA3 ppt–< 3< 3
PFPeS4 ppt–< 4< 4
PFTA8 ppt< 8–< 8
PFTrDA7 ppt< 7–< 7
PFUnA2 ppt–< 2< 2
lithium9 µg/L< 9–< 9

IREDELL WATER CORPORATION facility P22 · sample point E22 · groundwater

CompoundMRL2024-04-22
SE1
2024-07-09
SE1
2024-10-23
SE2
11Cl-PF3OUdS5 ppt–< 5< 5
4:2 FTS3 ppt–< 3< 3
6:2 FTS5 ppt–< 5< 5
8:2 FTS5 ppt–< 5< 5
9Cl-PF3ONS2 ppt–< 2< 2
ADONA3 ppt–< 3< 3
HFPO-DA5 ppt–< 5< 5
NEtFOSAA5 ppt< 5–< 5
NFDHA20 ppt–< 20< 20
NMeFOSAA6 ppt< 6–< 6
PFBA5 ppt–< 5< 5
PFBS3 ppt–< 3< 3
PFDA3 ppt–< 3< 3
PFDoA3 ppt–< 3< 3
PFEESA3 ppt–< 3< 3
PFHpA3 ppt–< 3< 3
PFHpS3 ppt–< 3< 3
PFHxA3 ppt–< 3< 3
PFHxS3 ppt–< 3< 3
PFMBA3 ppt–< 3< 3
PFMPA4 ppt–< 4< 4
PFNA4 ppt–< 4< 4
PFOA4 ppt–< 4< 4
PFOS4 ppt–< 4< 4
PFPeA3 ppt–< 3< 3
PFPeS4 ppt–< 4< 4
PFTA8 ppt< 8–< 8
PFTrDA7 ppt< 7–< 7
PFUnA2 ppt–< 2< 2
lithium9 µg/L< 9–< 9

IREDELL WATER CORPORATION facility P23 · sample point E23 · groundwater

CompoundMRL2024-04-15
SE1
2024-05-20
SE1
2024-10-15
SE2
11Cl-PF3OUdS5 ppt–< 5< 5
4:2 FTS3 ppt–< 3< 3
6:2 FTS5 ppt–< 5< 5
8:2 FTS5 ppt–< 5< 5
9Cl-PF3ONS2 ppt–< 2< 2
ADONA3 ppt–< 3< 3
HFPO-DA5 ppt–< 5< 5
NEtFOSAA5 ppt< 5–< 5
NFDHA20 ppt–< 20< 20
NMeFOSAA6 ppt< 6–< 6
PFBA5 ppt–< 5< 5
PFBS3 ppt–< 3< 3
PFDA3 ppt–< 3< 3
PFDoA3 ppt–< 3< 3
PFEESA3 ppt–< 3< 3
PFHpA3 ppt–< 3< 3
PFHpS3 ppt–< 3< 3
PFHxA3 ppt–< 3< 3
PFHxS3 ppt–< 3< 3
PFMBA3 ppt–< 3< 3
PFMPA4 ppt–< 4< 4
PFNA4 ppt–< 4< 4
PFOA4 ppt–< 4< 4
PFOS4 ppt–< 4< 4
PFPeA3 ppt–< 3< 3
PFPeS4 ppt–< 4< 4
PFTA8 ppt< 8–< 8
PFTrDA7 ppt< 7–< 7
PFUnA2 ppt–< 2< 2
lithium9 µg/L< 9–< 9

IREDELL WATER CORPORATION facility P25 · sample point E25 · groundwater

CompoundMRL2024-04-15
SE1
2024-05-20
SE1
2024-10-15
SE2
11Cl-PF3OUdS5 ppt–< 5< 5
4:2 FTS3 ppt–< 3< 3
6:2 FTS5 ppt–< 5< 5
8:2 FTS5 ppt–< 5< 5
9Cl-PF3ONS2 ppt–< 2< 2
ADONA3 ppt–< 3< 3
HFPO-DA5 ppt–< 5< 5
NEtFOSAA5 ppt< 5–< 5
NFDHA20 ppt–< 20< 20
NMeFOSAA6 ppt< 6–< 6
PFBA5 ppt–< 5< 5
PFBS3 ppt–< 3< 3
PFDA3 ppt–< 3< 3
PFDoA3 ppt–< 3< 3
PFEESA3 ppt–< 3< 3
PFHpA3 ppt–< 3< 3
PFHpS3 ppt–< 3< 3
PFHxA3 ppt–< 3< 3
PFHxS3 ppt–< 3< 3
PFMBA3 ppt–< 3< 3
PFMPA4 ppt–< 4< 4
PFNA4 ppt–< 4< 4
PFOA4 ppt–< 4< 4
PFOS4 ppt–< 4< 4
PFPeA3 ppt–< 3< 3
PFPeS4 ppt–< 4< 4
PFTA8 ppt< 8–< 8
PFTrDA7 ppt< 7–< 7
PFUnA2 ppt–< 2< 2
lithium9 µg/L< 9–< 9

IREDELL WATER CORPORATION facility P26 · sample point E26 · groundwater

CompoundMRL2024-04-22
SE1
2024-10-23
SE2
2025-03-03
SE1
11Cl-PF3OUdS5 ppt–< 5< 5
4:2 FTS3 ppt–< 3< 3
6:2 FTS5 ppt–< 5< 5
8:2 FTS5 ppt–< 5< 5
9Cl-PF3ONS2 ppt–< 2< 2
ADONA3 ppt–< 3< 3
HFPO-DA5 ppt–< 5< 5
NEtFOSAA5 ppt< 5< 5–
NFDHA20 ppt–< 20< 20
NMeFOSAA6 ppt< 6< 6–
PFBA5 ppt–< 5< 5
PFBS3 ppt–< 3< 3
PFDA3 ppt–< 3< 3
PFDoA3 ppt–< 3< 3
PFEESA3 ppt–< 3< 3
PFHpA3 ppt–< 3< 3
PFHpS3 ppt–< 3< 3
PFHxA3 ppt–< 3< 3
PFHxS3 ppt–< 3< 3
PFMBA3 ppt–< 3< 3
PFMPA4 ppt–< 4< 4
PFNA4 ppt–< 4< 4
PFOA4 ppt–< 4< 4
PFOS4 ppt–< 4< 4
PFPeA3 ppt–< 3< 3
PFPeS4 ppt–< 4< 4
PFTA8 ppt< 8< 8–
PFTrDA7 ppt< 7< 7–
PFUnA2 ppt–< 2< 2
lithium9 µg/L< 9< 9–

IREDELL WATER CORPORATION facility P27 · sample point E27 · groundwater

CompoundMRL2024-04-08
SE1
2024-10-14
SE2
11Cl-PF3OUdS5 ppt< 5< 5
4:2 FTS3 ppt< 3< 3
6:2 FTS5 ppt< 5< 5
8:2 FTS5 ppt< 5< 5
9Cl-PF3ONS2 ppt< 2< 2
ADONA3 ppt< 3< 3
HFPO-DA5 ppt< 5< 5
NEtFOSAA5 ppt< 5< 5
NFDHA20 ppt< 20< 20
NMeFOSAA6 ppt< 6< 6
PFBA5 ppt< 5< 5
PFBS3 ppt< 3< 3
PFDA3 ppt< 3< 3
PFDoA3 ppt< 3< 3
PFEESA3 ppt< 3< 3
PFHpA3 ppt< 3< 3
PFHpS3 ppt< 3< 3
PFHxA3 ppt< 3< 3
PFHxS3 ppt< 3< 3
PFMBA3 ppt< 3< 3
PFMPA4 ppt< 4< 4
PFNA4 ppt< 4< 4
PFOA4 ppt< 4< 4
PFOS4 ppt< 4< 4
PFPeA3 ppt< 3< 3
PFPeS4 ppt< 4< 4
PFTA8 ppt< 8< 8
PFTrDA7 ppt< 7< 7
PFUnA2 ppt< 2< 2
lithium9 µg/L< 9< 9

IREDELL WATER CORPORATION facility P28 · sample point E28 · groundwater

CompoundMRL2024-04-08
SE1
2024-10-14
SE2
11Cl-PF3OUdS5 ppt< 5< 5
4:2 FTS3 ppt< 3< 3
6:2 FTS5 ppt< 5< 5
8:2 FTS5 ppt< 5< 5
9Cl-PF3ONS2 ppt< 2< 2
ADONA3 ppt< 3< 3
HFPO-DA5 ppt< 5< 5
NEtFOSAA5 ppt< 5< 5
NFDHA20 ppt< 20< 20
NMeFOSAA6 ppt< 6< 6
PFBA5 ppt< 5< 5
PFBS3 ppt< 3< 3
PFDA3 ppt< 3< 3
PFDoA3 ppt< 3< 3
PFEESA3 ppt< 3< 3
PFHpA3 ppt< 3< 3
PFHpS3 ppt< 3< 3
PFHxA3 ppt< 3< 3
PFHxS3 ppt< 3< 3
PFMBA3 ppt< 3< 3
PFMPA4 ppt< 4< 4
PFNA4 ppt< 4< 4
PFOA4 ppt< 4< 4
PFOS4 ppt< 4< 4
PFPeA3 ppt< 3< 3
PFPeS4 ppt< 4< 4
PFTA8 ppt< 8< 8
PFTrDA7 ppt< 7< 7
PFUnA2 ppt< 2< 2
lithium9 µg/L< 99.06

IREDELL WATER CORPORATION facility P29 · sample point E29 · groundwater

CompoundMRL2024-04-15
SE1
2024-05-20
SE1
2024-10-15
SE2
11Cl-PF3OUdS5 ppt–< 5< 5
4:2 FTS3 ppt–< 3< 3
6:2 FTS5 ppt–< 5< 5
8:2 FTS5 ppt–< 5< 5
9Cl-PF3ONS2 ppt–< 2< 2
ADONA3 ppt–< 3< 3
HFPO-DA5 ppt–< 5< 5
NEtFOSAA5 ppt< 5–< 5
NFDHA20 ppt–< 20< 20
NMeFOSAA6 ppt< 6–< 6
PFBA5 ppt–< 5< 5
PFBS3 ppt–< 3< 3
PFDA3 ppt–< 3< 3
PFDoA3 ppt–< 3< 3
PFEESA3 ppt–< 3< 3
PFHpA3 ppt–< 3< 3
PFHpS3 ppt–< 3< 3
PFHxA3 ppt–< 3< 3
PFHxS3 ppt–< 3< 3
PFMBA3 ppt–< 3< 3
PFMPA4 ppt–< 4< 4
PFNA4 ppt–< 4< 4
PFOA4 ppt–< 4< 4
PFOS4 ppt–< 4< 4
PFPeA3 ppt–< 3< 3
PFPeS4 ppt–< 4< 4
PFTA8 ppt< 8–< 8
PFTrDA7 ppt< 7–< 7
PFUnA2 ppt–< 2< 2
lithium9 µg/L< 9–< 9

IREDELL WATER CORPORATION facility P30 · sample point E30 · groundwater

CompoundMRL2024-04-22
SE1
2024-10-22
SE2
11Cl-PF3OUdS5 ppt< 5< 5
4:2 FTS3 ppt< 3< 3
6:2 FTS5 ppt< 5< 5
8:2 FTS5 ppt< 5< 5
9Cl-PF3ONS2 ppt< 2< 2
ADONA3 ppt< 3< 3
HFPO-DA5 ppt< 5< 5
NEtFOSAA5 ppt< 5< 5
NFDHA20 ppt< 20< 20
NMeFOSAA6 ppt< 6< 6
PFBA5 ppt< 5< 5
PFBS3 ppt< 3< 3
PFDA3 ppt< 3< 3
PFDoA3 ppt< 3< 3
PFEESA3 ppt< 3< 3
PFHpA3 ppt< 3< 3
PFHpS3 ppt< 3< 3
PFHxA3 ppt< 3< 3
PFHxS3 ppt< 3< 3
PFMBA3 ppt< 3< 3
PFMPA4 ppt< 4< 4
PFNA4 ppt< 4< 4
PFOA4 ppt< 4< 4
PFOS4 ppt< 4< 4
PFPeA3 ppt< 3< 3
PFPeS4 ppt< 4< 4
PFTA8 ppt< 8< 8
PFTrDA7 ppt< 7< 7
PFUnA2 ppt< 2< 2
lithium9 µg/L< 9< 9

IREDELL WATER CORPORATION facility P31 · sample point E31 · groundwater

CompoundMRL2024-04-15
SE1
2024-10-15
SE2
11Cl-PF3OUdS5 ppt< 5< 5
4:2 FTS3 ppt< 3< 3
6:2 FTS5 ppt< 5< 5
8:2 FTS5 ppt< 5< 5
9Cl-PF3ONS2 ppt< 2< 2
ADONA3 ppt< 3< 3
HFPO-DA5 ppt< 5< 5
NEtFOSAA5 ppt< 5< 5
NFDHA20 ppt< 20< 20
NMeFOSAA6 ppt< 6< 6
PFBA5 ppt< 5< 5
PFBS3 ppt< 3< 3
PFDA3 ppt< 3< 3
PFDoA3 ppt< 3< 3
PFEESA3 ppt< 3< 3
PFHpA3 ppt< 3< 3
PFHpS3 ppt< 3< 3
PFHxA3 ppt< 3< 3
PFHxS3 ppt< 3< 3
PFMBA3 ppt< 3< 3
PFMPA4 ppt< 4< 4
PFNA4 ppt< 4< 4
PFOA4 ppt< 4< 4
PFOS4 ppt< 4< 4
PFPeA3 ppt< 3< 3
PFPeS4 ppt< 4< 4
PFTA8 ppt< 8< 8
PFTrDA7 ppt< 7< 7
PFUnA2 ppt< 2< 2
lithium9 µg/L< 9< 9

IREDELL WATER CORPORATION facility P32 · sample point E32 · groundwater

CompoundMRL2024-04-02
SE1
2024-10-14
SE2
11Cl-PF3OUdS5 ppt< 5< 5
4:2 FTS3 ppt< 3< 3
6:2 FTS5 ppt< 5< 5
8:2 FTS5 ppt< 5< 5
9Cl-PF3ONS2 ppt< 2< 2
ADONA3 ppt< 3< 3
HFPO-DA5 ppt< 5< 5
NEtFOSAA5 ppt< 5< 5
NFDHA20 ppt< 20< 20
NMeFOSAA6 ppt< 6< 6
PFBA5 ppt< 5< 5
PFBS3 ppt< 3< 3
PFDA3 ppt< 3< 3
PFDoA3 ppt< 3< 3
PFEESA3 ppt< 3< 3
PFHpA3 ppt< 3< 3
PFHpS3 ppt< 3< 3
PFHxA3 ppt< 3< 3
PFHxS3 ppt< 3< 3
PFMBA3 ppt< 3< 3
PFMPA4 ppt< 4< 4
PFNA4 ppt< 4< 4
PFOA4 ppt< 4< 4
PFOS4 ppt< 4< 4
PFPeA3 ppt< 3< 3
PFPeS4 ppt< 4< 4
PFTA8 ppt< 8< 8
PFTrDA7 ppt< 7< 7
PFUnA2 ppt< 2< 2
lithium9 µg/L< 9< 9

IREDELL WATER CORPORATION facility P33 · sample point E33 · groundwater

CompoundMRL2024-04-22
SE1
2024-10-22
SE2
11Cl-PF3OUdS5 ppt< 5< 5
4:2 FTS3 ppt< 3< 3
6:2 FTS5 ppt< 5< 5
8:2 FTS5 ppt< 5< 5
9Cl-PF3ONS2 ppt< 2< 2
ADONA3 ppt< 3< 3
HFPO-DA5 ppt< 5< 5
NEtFOSAA5 ppt< 5< 5
NFDHA20 ppt< 20< 20
NMeFOSAA6 ppt< 6< 6
PFBA5 ppt< 5< 5
PFBS3 ppt< 3< 3
PFDA3 ppt< 3< 3
PFDoA3 ppt< 3< 3
PFEESA3 ppt< 3< 3
PFHpA3 ppt< 3< 3
PFHpS3 ppt< 3< 3
PFHxA3 ppt< 3< 3
PFHxS3 ppt< 3< 3
PFMBA3 ppt< 3< 3
PFMPA4 ppt< 4< 4
PFNA4 ppt< 4< 4
PFOA4 ppt< 4< 4
PFOS4 ppt< 4< 4
PFPeA3 ppt< 3< 3
PFPeS4 ppt< 4< 4
PFTA8 ppt< 8< 8
PFTrDA7 ppt< 7< 7
PFUnA2 ppt< 2< 2
lithium9 µg/L< 9< 9

IREDELL WATER CORPORATION facility P34 · sample point E34 · groundwater

CompoundMRL2024-04-22
SE1
2024-05-21
SE1
2024-10-22
SE2
PFBS3 ppt–5.66.2
PFHxA3 ppt–4.65.6
PFOA4 ppt–5.76
PFOS4 ppt–4.54.9
PFPeA3 ppt–55.9
11Cl-PF3OUdS5 ppt–< 5< 5
4:2 FTS3 ppt–< 3< 3
6:2 FTS5 ppt–< 5< 5
8:2 FTS5 ppt–< 5< 5
9Cl-PF3ONS2 ppt–< 2< 2
ADONA3 ppt–< 3< 3
HFPO-DA5 ppt–< 5< 5
NEtFOSAA5 ppt< 5–< 5
NFDHA20 ppt–< 20< 20
NMeFOSAA6 ppt< 6–< 6
PFBA5 ppt–< 5< 5
PFDA3 ppt–< 3< 3
PFDoA3 ppt–< 3< 3
PFEESA3 ppt–< 3< 3
PFHpA3 ppt–< 3< 3
PFHpS3 ppt–< 3< 3
PFHxS3 ppt–< 3< 3
PFMBA3 ppt–< 3< 3
PFMPA4 ppt–< 4< 4
PFNA4 ppt–< 4< 4
PFPeS4 ppt–< 4< 4
PFTA8 ppt< 8–< 8
PFTrDA7 ppt< 7–< 7
PFUnA2 ppt–< 2< 2
lithium9 µg/L< 9–< 9

IREDELL WATER CORPORATION facility P35 · sample point E35 · groundwater

CompoundMRL2024-04-15
SE1
2024-05-20
SE1
2024-10-15
SE2
11Cl-PF3OUdS5 ppt–< 5< 5
4:2 FTS3 ppt–< 3< 3
6:2 FTS5 ppt–< 5< 5
8:2 FTS5 ppt–< 5< 5
9Cl-PF3ONS2 ppt–< 2< 2
ADONA3 ppt–< 3< 3
HFPO-DA5 ppt–< 5< 5
NEtFOSAA5 ppt< 5–< 5
NFDHA20 ppt–< 20< 20
NMeFOSAA6 ppt< 6–< 6
PFBA5 ppt–< 5< 5
PFBS3 ppt–< 3< 3
PFDA3 ppt–< 3< 3
PFDoA3 ppt–< 3< 3
PFEESA3 ppt–< 3< 3
PFHpA3 ppt–< 3< 3
PFHpS3 ppt–< 3< 3
PFHxA3 ppt–< 3< 3
PFHxS3 ppt–< 3< 3
PFMBA3 ppt–< 3< 3
PFMPA4 ppt–< 4< 4
PFNA4 ppt–< 4< 4
PFOA4 ppt–< 4< 4
PFOS4 ppt–< 4< 4
PFPeA3 ppt–< 3< 3
PFPeS4 ppt–< 4< 4
PFTA8 ppt< 8–< 8
PFTrDA7 ppt< 7–< 7
PFUnA2 ppt–< 2< 2
lithium9 µg/L< 9–< 9

IREDELL WATER CORPORATION facility P36 · sample point E36 · groundwater

CompoundMRL2024-04-22
SE1
2024-10-22
SE2
11Cl-PF3OUdS5 ppt< 5< 5
4:2 FTS3 ppt< 3< 3
6:2 FTS5 ppt< 5< 5
8:2 FTS5 ppt< 5< 5
9Cl-PF3ONS2 ppt< 2< 2
ADONA3 ppt< 3< 3
HFPO-DA5 ppt< 5< 5
NEtFOSAA5 ppt< 5< 5
NFDHA20 ppt< 20< 20
NMeFOSAA6 ppt< 6< 6
PFBA5 ppt< 5< 5
PFBS3 ppt< 3< 3
PFDA3 ppt< 3< 3
PFDoA3 ppt< 3< 3
PFEESA3 ppt< 3< 3
PFHpA3 ppt< 3< 3
PFHpS3 ppt< 3< 3
PFHxA3 ppt< 3< 3
PFHxS3 ppt< 3< 3
PFMBA3 ppt< 3< 3
PFMPA4 ppt< 4< 4
PFNA4 ppt< 4< 4
PFOA4 ppt< 4< 4
PFOS4 ppt< 4< 4
PFPeA3 ppt< 3< 3
PFPeS4 ppt< 4< 4
PFTA8 ppt< 8< 8
PFTrDA7 ppt< 7< 7
PFUnA2 ppt< 2< 2
lithium9 µg/L< 9< 9

IREDELL WATER CORPORATION facility P37 · sample point E37 · groundwater

CompoundMRL2024-04-15
SE1
2024-10-15
SE2
11Cl-PF3OUdS5 ppt< 5< 5
4:2 FTS3 ppt< 3< 3
6:2 FTS5 ppt< 5< 5
8:2 FTS5 ppt< 5< 5
9Cl-PF3ONS2 ppt< 2< 2
ADONA3 ppt< 3< 3
HFPO-DA5 ppt< 5< 5
NEtFOSAA5 ppt< 5< 5
NFDHA20 ppt< 20< 20
NMeFOSAA6 ppt< 6< 6
PFBA5 ppt< 5< 5
PFBS3 ppt< 3< 3
PFDA3 ppt< 3< 3
PFDoA3 ppt< 3< 3
PFEESA3 ppt< 3< 3
PFHpA3 ppt< 3< 3
PFHpS3 ppt< 3< 3
PFHxA3 ppt< 3< 3
PFHxS3 ppt< 3< 3
PFMBA3 ppt< 3< 3
PFMPA4 ppt< 4< 4
PFNA4 ppt< 4< 4
PFOA4 ppt< 4< 4
PFOS4 ppt< 4< 4
PFPeA3 ppt< 3< 3
PFPeS4 ppt< 4< 4
PFTA8 ppt< 8< 8
PFTrDA7 ppt< 7< 7
PFUnA2 ppt< 2< 2
lithium9 µg/L< 9< 9

IREDELL WATER CORPORATION facility P38 · sample point E38 · groundwater

CompoundMRL2024-04-15
SE1
2024-05-20
SE1
2024-10-15
SE2
11Cl-PF3OUdS5 ppt–< 5< 5
4:2 FTS3 ppt–< 3< 3
6:2 FTS5 ppt–< 5< 5
8:2 FTS5 ppt–< 5< 5
9Cl-PF3ONS2 ppt–< 2< 2
ADONA3 ppt–< 3< 3
HFPO-DA5 ppt–< 5< 5
NEtFOSAA5 ppt< 5–< 5
NFDHA20 ppt–< 20< 20
NMeFOSAA6 ppt< 6–< 6
PFBA5 ppt–< 5< 5
PFBS3 ppt–< 3< 3
PFDA3 ppt–< 3< 3
PFDoA3 ppt–< 3< 3
PFEESA3 ppt–< 3< 3
PFHpA3 ppt–< 3< 3
PFHpS3 ppt–< 3< 3
PFHxA3 ppt–< 3< 3
PFHxS3 ppt–< 3< 3
PFMBA3 ppt–< 3< 3
PFMPA4 ppt–< 4< 4
PFNA4 ppt–< 4< 4
PFOA4 ppt–< 4< 4
PFOS4 ppt–< 4< 4
PFPeA3 ppt–< 3< 3
PFPeS4 ppt–< 4< 4
PFTA8 ppt< 8–< 8
PFTrDA7 ppt< 7–< 7
PFUnA2 ppt–< 2< 2
lithium9 µg/L< 9–< 9

IREDELL WATER CORPORATION facility P39 · sample point E39 · groundwater

CompoundMRL2024-04-08
SE1
2024-10-14
SE2
11Cl-PF3OUdS5 ppt< 5< 5
4:2 FTS3 ppt< 3< 3
6:2 FTS5 ppt< 5< 5
8:2 FTS5 ppt< 5< 5
9Cl-PF3ONS2 ppt< 2< 2
ADONA3 ppt< 3< 3
HFPO-DA5 ppt< 5< 5
NEtFOSAA5 ppt< 5< 5
NFDHA20 ppt< 20< 20
NMeFOSAA6 ppt< 6< 6
PFBA5 ppt< 5< 5
PFBS3 ppt< 3< 3
PFDA3 ppt< 3< 3
PFDoA3 ppt< 3< 3
PFEESA3 ppt< 3< 3
PFHpA3 ppt< 3< 3
PFHpS3 ppt< 3< 3
PFHxA3 ppt< 3< 3
PFHxS3 ppt< 3< 3
PFMBA3 ppt< 3< 3
PFMPA4 ppt< 4< 4
PFNA4 ppt< 4< 4
PFOA4 ppt< 4< 4
PFOS4 ppt< 4< 4
PFPeA3 ppt< 3< 3
PFPeS4 ppt< 4< 4
PFTA8 ppt< 8< 8
PFTrDA7 ppt< 7< 7
PFUnA2 ppt< 2< 2
lithium9 µg/L< 9< 9

IREDELL WATER CORPORATION facility P40 · sample point S40 · groundwater

CompoundMRL2024-04-02
SE1
2024-04-23
SE1
2024-10-14
SE2
11Cl-PF3OUdS5 ppt–< 5< 5
4:2 FTS3 ppt–< 3< 3
6:2 FTS5 ppt–< 5< 5
8:2 FTS5 ppt–< 5< 5
9Cl-PF3ONS2 ppt–< 2< 2
ADONA3 ppt–< 3< 3
HFPO-DA5 ppt–< 5< 5
NEtFOSAA5 ppt< 5–< 5
NFDHA20 ppt–< 20< 20
NMeFOSAA6 ppt< 6–< 6
PFBA5 ppt–< 5< 5
PFBS3 ppt–< 3< 3
PFDA3 ppt–< 3< 3
PFDoA3 ppt–< 3< 3
PFEESA3 ppt–< 3< 3
PFHpA3 ppt–< 3< 3
PFHpS3 ppt–< 3< 3
PFHxA3 ppt–< 3< 3
PFHxS3 ppt–< 3< 3
PFMBA3 ppt–< 3< 3
PFMPA4 ppt–< 4< 4
PFNA4 ppt–< 4< 4
PFOA4 ppt–< 4< 4
PFOS4 ppt–< 4< 4
PFPeA3 ppt–< 3< 3
PFPeS4 ppt–< 4< 4
PFTA8 ppt< 8–< 8
PFTrDA7 ppt< 7–< 7
PFUnA2 ppt–< 2< 2
lithium9 µg/L< 9–< 9

IREDELL WATER CORPORATION facility P43 · sample point S43 · groundwater

CompoundMRL2024-04-22
SE1
2024-10-23
SE2
11Cl-PF3OUdS5 ppt< 5< 5
4:2 FTS3 ppt< 3< 3
6:2 FTS5 ppt< 5< 5
8:2 FTS5 ppt< 5< 5
9Cl-PF3ONS2 ppt< 2< 2
ADONA3 ppt< 3< 3
HFPO-DA5 ppt< 5< 5
NEtFOSAA5 ppt< 5< 5
NFDHA20 ppt< 20< 20
NMeFOSAA6 ppt< 6< 6
PFBA5 ppt< 5< 5
PFBS3 ppt< 3< 3
PFDA3 ppt< 3< 3
PFDoA3 ppt< 3< 3
PFEESA3 ppt< 3< 3
PFHpA3 ppt< 3< 3
PFHpS3 ppt< 3< 3
PFHxA3 ppt< 3< 3
PFHxS3 ppt< 3< 3
PFMBA3 ppt< 3< 3
PFMPA4 ppt< 4< 4
PFNA4 ppt< 4< 4
PFOA4 ppt< 4< 4
PFOS4 ppt< 4< 4
PFPeA3 ppt< 3< 3
PFPeS4 ppt< 4< 4
PFTA8 ppt< 8< 8
PFTrDA7 ppt< 7< 7
PFUnA2 ppt< 2< 2
lithium9 µg/L< 9< 9

IREDELL WATER CORPORATION facility P44 · sample point S44 · groundwater

CompoundMRL2024-04-22
SE1
2024-10-23
SE2
PFBS3 ppt< 33.8
11Cl-PF3OUdS5 ppt< 5< 5
4:2 FTS3 ppt< 3< 3
6:2 FTS5 ppt< 5< 5
8:2 FTS5 ppt< 5< 5
9Cl-PF3ONS2 ppt< 2< 2
ADONA3 ppt< 3< 3
HFPO-DA5 ppt< 5< 5
NEtFOSAA5 ppt< 5< 5
NFDHA20 ppt< 20< 20
NMeFOSAA6 ppt< 6< 6
PFBA5 ppt< 5< 5
PFDA3 ppt< 3< 3
PFDoA3 ppt< 3< 3
PFEESA3 ppt< 3< 3
PFHpA3 ppt< 3< 3
PFHpS3 ppt< 3< 3
PFHxA3 ppt< 3< 3
PFHxS3 ppt< 3< 3
PFMBA3 ppt< 3< 3
PFMPA4 ppt< 4< 4
PFNA4 ppt< 4< 4
PFOA4 ppt< 4< 4
PFOS4 ppt< 4< 4
PFPeA3 ppt< 3< 3
PFPeS4 ppt< 4< 4
PFTA8 ppt< 8< 8
PFTrDA7 ppt< 7< 7
PFUnA2 ppt< 2< 2
lithium9 µg/L< 9< 9

IREDELL WATER CORPORATION facility S60 · sample point E60 · surface water

CompoundMRL2024-04-15
SE1
2024-05-20
SE1
2024-07-09
SE2
2024-08-06
SE2
2024-10-15
SE3
2025-01-07
SE4
11Cl-PF3OUdS5 ppt–< 5–< 5< 5< 5
4:2 FTS3 ppt–< 3–< 3< 3< 3
6:2 FTS5 ppt–< 5–< 5< 5< 5
8:2 FTS5 ppt–< 5–< 5< 5< 5
9Cl-PF3ONS2 ppt–< 2–< 2< 2< 2
ADONA3 ppt–< 3–< 3< 3< 3
HFPO-DA5 ppt–< 5–< 5< 5< 5
NEtFOSAA5 ppt< 5–< 5–< 5< 5
NFDHA20 ppt–< 20–< 20< 20< 20
NMeFOSAA6 ppt< 6–< 6–< 6< 6
PFBA5 ppt–< 5–< 5< 5< 5
PFBS3 ppt–< 3–< 3< 3< 3
PFDA3 ppt–< 3–< 3< 3< 3
PFDoA3 ppt–< 3–< 3< 3< 3
PFEESA3 ppt–< 3–< 3< 3< 3
PFHpA3 ppt–< 3–< 3< 3< 3
PFHpS3 ppt–< 3–< 3< 3< 3
PFHxA3 ppt–< 3–< 3< 3< 3
PFHxS3 ppt–< 3–< 3< 3< 3
PFMBA3 ppt–< 3–< 3< 3< 3
PFMPA4 ppt–< 4–< 4< 4< 4
PFNA4 ppt–< 4–< 4< 4< 4
PFOA4 ppt–< 4–< 4< 4< 4
PFOS4 ppt–< 4–< 4< 4< 4
PFPeA3 ppt–< 3–< 3< 3< 3
PFPeS4 ppt–< 4–< 4< 4< 4
PFTA8 ppt< 8–< 8–< 8< 8
PFTrDA7 ppt< 7–< 7–< 7< 7
PFUnA2 ppt–< 2–< 2< 2< 2
lithium9 µg/L< 9–< 9–< 9< 9

IREDELL WATER CORPORATION facility S63 · sample point E63 · surface water

CompoundMRL2024-04-22
SE1
2024-07-09
SE2
2024-08-06
SE2
2024-10-23
SE3
2025-01-07
SE4
11Cl-PF3OUdS5 ppt< 5–< 5< 5< 5
4:2 FTS3 ppt< 3–< 3< 3< 3
6:2 FTS5 ppt< 5–< 5< 5< 5
8:2 FTS5 ppt< 5–< 5< 5< 5
9Cl-PF3ONS2 ppt< 2–< 2< 2< 2
ADONA3 ppt< 3–< 3< 3< 3
HFPO-DA5 ppt< 5–< 5< 5< 5
NEtFOSAA5 ppt< 5< 5–< 5< 5
NFDHA20 ppt< 20–< 20< 20< 20
NMeFOSAA6 ppt< 6< 6–< 6< 6
PFBA5 ppt< 5–< 5< 5< 5
PFBS3 ppt< 3–< 3< 3< 3
PFDA3 ppt< 3–< 3< 3< 3
PFDoA3 ppt< 3–< 3< 3< 3
PFEESA3 ppt< 3–< 3< 3< 3
PFHpA3 ppt< 3–< 3< 3< 3
PFHpS3 ppt< 3–< 3< 3< 3
PFHxA3 ppt< 3–< 3< 3< 3
PFHxS3 ppt< 3–< 3< 3< 3
PFMBA3 ppt< 3–< 3< 3< 3
PFMPA4 ppt< 4–< 4< 4< 4
PFNA4 ppt< 4–< 4< 4< 4
PFOA4 ppt< 4–< 4< 4< 4
PFOS4 ppt< 4–< 4< 4< 4
PFPeA3 ppt< 3–< 3< 3< 3
PFPeS4 ppt< 4–< 4< 4< 4
PFTA8 ppt< 8< 8–< 8< 8
PFTrDA7 ppt< 7< 7–< 7< 7
PFUnA2 ppt< 2–< 2< 2< 2
lithium9 µg/L< 9< 9–< 9< 9

Statistics by compound

CompoundResultsDetectedHighest (date)Mean boundsKM medianP75P90P95
PFOA8010%18.8
2024-05-20
0.8–4.4<MRL<MRL<MRL6
PFHxA809%30.5
2024-05-20
0.78–3.52<MRL<MRL<MRL3.9
PFOS808%4.9
2024-10-22
0.34–4.04<MRL<MRL<MRL4.3
PFPeA808%60.6
2024-05-20
1.26–4.04<MRL<MRL<MRL3.9
PFBS806%6.2
2024-10-22
0.34–3.15<MRL<MRL<MRL3.8
PFHxS804%3.6
2024-04-08
0.12–3.01<MRL<MRL<MRL<MRL
PFBA802%14.7
2024-05-20
0.26–5.14<MRL<MRL<MRL<MRL
PFHpA802%9.9
2024-05-20
0.17–3.1<MRL<MRL<MRL<MRL
lithium801%9.06
2024-10-14
0.11–9<MRL<MRL<MRL<MRL

Never detected (21): 11Cl-PF3OUdS, 4:2 FTS, 6:2 FTS, 8:2 FTS, 9Cl-PF3ONS, ADONA, HFPO-DA, NEtFOSAA, NFDHA, NMeFOSAA, PFDA, PFDoA, PFEESA, PFHpS, PFMBA, PFMPA, PFNA, PFPeS, PFTA, PFTrDA, PFUnA.

Left-censored Kaplan–Meier statistics (Helsel 2005; Helsel & Lee 2006, NADA for R). Units: ppt; lithium µg/L. Each compound has one reporting limit, so the Kaplan–Meier mean equals the upper mean bound (non-detects at the MRL); the lower bound sets non-detects to 0. “<MRL” = the percentile falls below the reporting limit and cannot be estimated. These describe this system's UCMR 5 samples, not population estimates.

Sources

  • EPA UCMR 5 occurrence data text files (UCMR5_All.txt; samples 2023-01-09 to 2026-06-03; data summary dated Jul 2026)
  • EPA SDWIS via ECHO SDWA downloads, quarter 2026Q3
  • EPA Public Water System Service Areas v3 (Mar 2026)
  • US Census Bureau cartographic boundary counties 1:500k, 2024
  • EPA/USGS NHDPlus V2 (medium resolution) flowlines, Strahler order 2+

Data build 06b855374275 · 2026-10-18T04:10Z · UCMR 5 release Jul2026 · SDWIS 2026Q3. Data and methods.