Montville Twp Mua

PFAS monitoring results for a public water system in New Jersey

NJ1421003UCMR 5EPA monitoring data
8.1Highest PFOA result, ppt
9.3Highest PFOS result, ppt
0.57Highest Hazard Index
360Results
PWSID
NJ1421003
State
New Jersey
System type
community water system (CWS)
Population served
22,000
City
Montville
Counties
Morris County
Primary source water
surface water (purchased)
UCMR 5 sampling
2023-08-10 to 2024-07-12 · 4 entry point(s) · water types: GW;SW
Service-area boundary
EPA-modeled (Random Forest) — approximate: estimated by EPA with a statistical model, not a surveyed service area

PFOS 1–3 × its limit highest single result
PFOA 1–3 × 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

  • Lincoln Park Water Dept (NJ1416001)
    Seller's highest results: PFOA 5.4 ppt · PFOS 4 ppt · HI 0 · detected: PFOA;PFOS
  • Jersey City Mua (NJ0906001)
    Seller's highest results: PFOA 9.2 ppt · PFOS 7.7 ppt · HI 0.5 · detected: PFHxA;PFHxS;PFOA;PFOS;PFPeA

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)8.16.754
PFOS (ppt)9.35.854
Hazard Index0.570.3521.0†

“<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).

Compared with New Jersey standards

Highest single resultWorst entry-point average*New Jersey
PFNA (ppt)0013
PFOA (ppt)8.16.7514
PFOS (ppt)9.35.8513

Sum standards add the listed compounds within each sample (non-detects = 0). State compliance is normally judged on averages over time; these are screening comparisons.

Sampling history

Sampled 2023-08-10 to 2024-07-12 · 4 entry point(s) · water types: GW;SW · 13 sampling visits. PFAS in ppt (ng/L).

DateEntry pointEventPFOAPFOSHIOther detections
2023-08-10Indian Lane East (GW)SE15.5<40.002none
2023-08-10Indian Lane West TP (GW)SE14.5<40none
2023-08-10Jersey City Consecutive Connection (SW)SE17.49.30.53PFHxA 4.5, PFPeA 6.1
2023-08-10Lincoln Park Consecutive Connection (SW)SE14.5<40none
2023-11-28Jersey City Consecutive Connection (SW)SE28.18.20.57PFHxA 4.6, PFPeA 5.1
2023-11-28Lincoln Park Consecutive Connection (SW)SE24.6<40none
2024-02-05Indian Lane East (GW)SE26.2<40.002PFBA 5.2
2024-02-05Indian Lane West TP (GW)SE25<40PFPeA 3.2
2024-02-05Jersey City Consecutive Connection (SW)SE35.75.90.31none
2024-02-05Lincoln Park Consecutive Connection (SW)SE34.5<40none
2024-05-10Jersey City Consecutive Connection (SW)SE45.8<40none
2024-05-10Lincoln Park Consecutive Connection (SW)SE4<4<40none
2024-07-12Jersey City Consecutive Connection (SW)SE3n/an/an/anone

“<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

360 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.

Indian Lane East facility 95008 · sample point TP005008 · groundwater

CompoundMRL2023-08-10
SE1
2024-02-05
SE2
PFBA5 ppt< 55.2
PFBS3 ppt3.13.7
PFOA4 ppt5.56.2
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
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
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

Indian Lane West TP facility 91003 · sample point TP001003 · groundwater

CompoundMRL2023-08-10
SE1
2024-02-05
SE2
PFOA4 ppt4.55
PFPeA3 ppt< 33.2
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
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
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

Jersey City Consecutive Connection facility 96009 · sample point CC006009 · surface water

CompoundMRL2023-08-10
SE1
2023-11-28
SE2
2024-02-05
SE3
2024-05-10
SE4
2024-07-12
SE3
PFHxA3 ppt4.54.6< 3< 3–
PFHxS3 ppt5.35.73.1< 3–
PFOA4 ppt7.48.15.75.8–
PFOS4 ppt9.38.25.9< 4–
PFPeA3 ppt6.15.1< 3< 3–
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–
PFMBA3 ppt< 3< 3< 3< 3–
PFMPA4 ppt< 4< 4< 4< 4–
PFNA4 ppt< 4< 4< 4< 4–
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–

Lincoln Park Consecutive Connection facility 96010 · sample point CC006010 · surface water

CompoundMRL2023-08-10
SE1
2023-11-28
SE2
2024-02-05
SE3
2024-05-10
SE4
PFOA4 ppt4.54.64.5< 4
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
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
PFOA1292%8.1
2023-11-28
5.15–5.4855.87.48.1
PFHxS1225%5.7
2023-11-28
1.18–3.42<MRL<MRL5.35.7
PFOS1225%9.3
2023-08-10
1.95–4.95<MRL<MRL8.29.3
PFPeA1225%6.1
2023-08-10
1.2–3.45<MRL<MRL5.16.1
PFBS1217%3.7
2024-02-05
0.57–3.07<MRL<MRL3.13.7
PFHxA1217%4.6
2023-11-28
0.76–3.26<MRL<MRL4.54.6
PFBA128%5.2
2024-02-05
0.43–5.02<MRL<MRL<MRL5.2

Never detected (23): 11Cl-PF3OUdS, 4:2 FTS, 6:2 FTS, 8:2 FTS, 9Cl-PF3ONS, ADONA, HFPO-DA, NEtFOSAA, NFDHA, NMeFOSAA, PFDA, PFDoA, PFEESA, PFHpA, PFHpS, PFMBA, PFMPA, PFNA, PFPeS, PFTA, PFTrDA, PFUnA, lithium.

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 2026-05-29; 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 0c4398dd12d6 · 2026-10-18T04:09Z · UCMR 5 release Jul2026 · SDWIS 2026Q3. Data and methods.