- PWSID
- AZ0407100
- State
- Arizona
- System type
- community water system (CWS)
- Population served
- 165,000
- City
- Tempe
- Counties
- Maricopa County
- Primary source water
- surface water
- UCMR 5 sampling
- 2023-07-13 to 2025-03-18 · 10 entry point(s) · water types: GW;SW
- Service-area boundary
- authoritative
PFOS ≥ 3 × its limit highest single result
PFOS ≥ 3 × its limit worst entry-point average
Open on the Arizona map · All Arizona systems · All results
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
- Chandler City Of (AZ0407090)
Seller's highest results: PFOA <MRL · PFOS <MRL · HI 0.006 · detected: PFBA;PFBS;PFHxA;PFPeA - Phoenix City Of (AZ0407025)
Seller's highest results: PFOA <MRL · PFOS <MRL · HI 0.008 · detected: PFBA;PFBS
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 result | Worst entry-point average* | Limit | |
|---|---|---|---|
| PFOA (ppt) | 38.7 | 37.95 | 4 |
| PFOS (ppt) | 55.8 | 55.15 | 4 |
| Hazard Index | 7.063 | 6.788 | 1.0† |
“<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 Arizona PFAS drinking-water standard in effect or proposed as of 2026-10-17: No Arizona-specific PFAS drinking-water standard; ADEQ adopts federal drinking-water rules by reference (A.A.C. Title 18, Ch. 4).
Sampling history
Sampled 2023-07-13 to 2025-03-18 · 10 entry point(s) · water types: GW;SW · 28 sampling visits. PFAS in ppt (ng/L).
| Date | Entry point | Event | PFOA | PFOS | HI | Other detections |
|---|---|---|---|---|---|---|
| 2023-07-13 | EPDS100- ID#08463 (SW) | SE1 | n/a | n/a | n/a | lithium 125 µg/L |
| 2023-07-13 | EPDS200- ID#08464 (SW) | SE1 | <4 | <4 | 0.004 | lithium 130 µg/L |
| 2023-08-07 | EPDS100- ID#08463 (SW) | SE1 | <4 | <4 | 0.005 | none |
| 2023-10-16 | EPDS100- ID#08463 (SW) | SE2 | n/a | n/a | n/a | lithium 137 µg/L |
| 2023-10-16 | EPDS200- ID#08464 (SW) | SE2 | n/a | n/a | n/a | lithium 138 µg/L |
| 2023-10-25 | EPDS100- ID#08463 (SW) | SE2 | <4 | <4 | 0.008 | none |
| 2024-01-02 | EPDS100- ID#08463 (SW) | SE3 | <4 | <4 | 0.002 | lithium 34.6 µg/L |
| 2024-01-02 | EPDS200- ID#08464 (SW) | SE3 | <4 | <4 | 0.004 | lithium 96.1 µg/L |
| 2024-01-08 | EPDS200- ID#08464 (SW) | SE3 | n/a | n/a | n/a | none |
| 2024-02-26 | EPDS200- ID#08464 (SW) | SE2 | <4 | <4 | 0.006 | none |
| 2024-04-02 | EPDS100- ID#08463 (SW) | SE4 | <4 | <4 | 0.003 | lithium 57.5 µg/L |
| 2024-04-02 | EPDS200- ID#08464 (SW) | SE4 | <4 | <4 | 0.003 | lithium 80.8 µg/L |
| 2024-07-09 | EPDS001- ID#09352 (GW) | SE1 | 37.2 | 54.5 | 7.063 | PFBA 9.8, PFHpA 7, PFHxA 22.5, PFPeA 14.4, PFPeS 8, lithium 195 µg/L |
| 2024-07-09 | EPDS010- ID#09356 (GW) | SE1 | 8 | 24.2 | 0.602 | PFHxA 3.2, PFPeA 3.3, lithium 137 µg/L |
| 2024-07-10 | EPDS011- ID#09357 (GW) | SE1 | 4 | 7 | 0.45 | lithium 159 µg/L |
| 2024-07-10 | EPDS012- ID#09358 (GW) | SE1 | <4 | <4 | 0 | lithium 139 µg/L |
| 2024-07-11 | EPDS009- ID#09355 (GW) | SE1 | <4 | <4 | 0 | lithium 147 µg/L |
| 2024-07-11 | EPDS013- ID#21843 (GW) | SE1 | 9.5 | 20 | 1.144 | PFHpA 4.8, PFHxA 9, PFPeA 7.5, lithium 232 µg/L |
| 2024-07-11 | EPDS014- ID#21844 (GW) | SE1 | <4 | 5.1 | 0.003 | lithium 278 µg/L |
| 2024-07-11 | EPDS016- ID#21845 (GW) | SE1 | <4 | <4 | 0 | lithium 133 µg/L |
| 2025-01-14 | EPDS001- ID#09352 (GW) | SE2 | 38.7 | 55.8 | 6.513 | PFBA 9.9, PFHpA 6.1, PFHxA 21.4, PFPeA 14.4, PFPeS 7.1, lithium 162 µg/L |
| 2025-01-14 | EPDS010- ID#09356 (GW) | SE2 | 9.9 | 26.7 | 0.682 | PFHxA 3.8, PFPeA 4.1, lithium 135 µg/L |
| 2025-01-15 | EPDS012- ID#09358 (GW) | SE2 | <4 | <4 | 0 | lithium 151 µg/L |
| 2025-01-15 | EPDS013- ID#21843 (GW) | SE2 | 13.1 | 29.2 | 1.605 | PFBA 5.9, PFHpA 6.3, PFHxA 13.5, PFPeA 11.5, lithium 258 µg/L |
| 2025-01-16 | EPDS009- ID#09355 (GW) | SE2 | <4 | <4 | 0 | lithium 156 µg/L |
| 2025-01-16 | EPDS014- ID#21844 (GW) | SE2 | <4 | 5.6 | 0.003 | lithium 229 µg/L |
| 2025-01-16 | EPDS016- ID#21845 (GW) | SE2 | <4 | <4 | 0 | lithium 137 µg/L |
| 2025-03-18 | EPDS011- ID#09357 (GW) | SE2 | 5.5 | 9.3 | 0.58 | lithium 170 µg/L |
“<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
720 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.
EPDS001- ID#09352 facility 09352 · sample point EPDS001 · groundwater
| Compound | MRL | 2024-07-09 SE1 | 2025-01-14 SE2 |
|---|---|---|---|
| PFBA | 5 ppt | 9.8 | 9.9 |
| PFBS | 3 ppt | 25.7 | 25 |
| PFHpA | 3 ppt | 7 | 6.1 |
| PFHxA | 3 ppt | 22.5 | 21.4 |
| PFHxS | 3 ppt | 70.5 | 65 |
| PFOA | 4 ppt | 37.2 | 38.7 |
| PFOS | 4 ppt | 54.5 | 55.8 |
| PFPeA | 3 ppt | 14.4 | 14.4 |
| PFPeS | 4 ppt | 8 | 7.1 |
| 11Cl-PF3OUdS | 5 ppt | < 5 | < 5 |
| 4:2 FTS | 3 ppt | < 3 | < 3 |
| 6:2 FTS | 5 ppt | < 5 | < 5 |
| 8:2 FTS | 5 ppt | < 5 | < 5 |
| 9Cl-PF3ONS | 2 ppt | < 2 | < 2 |
| ADONA | 3 ppt | < 3 | < 3 |
| HFPO-DA | 5 ppt | < 5 | < 5 |
| NEtFOSAA | 5 ppt | < 5 | < 5 |
| NFDHA | 20 ppt | < 20 | < 20 |
| NMeFOSAA | 6 ppt | < 6 | < 6 |
| PFDA | 3 ppt | < 3 | < 3 |
| PFDoA | 3 ppt | < 3 | < 3 |
| PFEESA | 3 ppt | < 3 | < 3 |
| PFHpS | 3 ppt | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | < 3 |
| PFMPA | 4 ppt | < 4 | < 4 |
| PFNA | 4 ppt | < 4 | < 4 |
| PFTA | 8 ppt | < 8 | < 8 |
| PFTrDA | 7 ppt | < 7 | < 7 |
| PFUnA | 2 ppt | < 2 | < 2 |
| lithium | 9 µg/L | 195 | 162 |
EPDS009- ID#09355 facility 09355 · sample point EPDS009 · groundwater
| Compound | MRL | 2024-07-11 SE1 | 2025-01-16 SE2 |
|---|---|---|---|
| 11Cl-PF3OUdS | 5 ppt | < 5 | < 5 |
| 4:2 FTS | 3 ppt | < 3 | < 3 |
| 6:2 FTS | 5 ppt | < 5 | < 5 |
| 8:2 FTS | 5 ppt | < 5 | < 5 |
| 9Cl-PF3ONS | 2 ppt | < 2 | < 2 |
| ADONA | 3 ppt | < 3 | < 3 |
| HFPO-DA | 5 ppt | < 5 | < 5 |
| NEtFOSAA | 5 ppt | < 5 | < 5 |
| NFDHA | 20 ppt | < 20 | < 20 |
| NMeFOSAA | 6 ppt | < 6 | < 6 |
| PFBA | 5 ppt | < 5 | < 5 |
| PFBS | 3 ppt | < 3 | < 3 |
| PFDA | 3 ppt | < 3 | < 3 |
| PFDoA | 3 ppt | < 3 | < 3 |
| PFEESA | 3 ppt | < 3 | < 3 |
| PFHpA | 3 ppt | < 3 | < 3 |
| PFHpS | 3 ppt | < 3 | < 3 |
| PFHxA | 3 ppt | < 3 | < 3 |
| PFHxS | 3 ppt | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | < 3 |
| PFMPA | 4 ppt | < 4 | < 4 |
| PFNA | 4 ppt | < 4 | < 4 |
| PFOA | 4 ppt | < 4 | < 4 |
| PFOS | 4 ppt | < 4 | < 4 |
| PFPeA | 3 ppt | < 3 | < 3 |
| PFPeS | 4 ppt | < 4 | < 4 |
| PFTA | 8 ppt | < 8 | < 8 |
| PFTrDA | 7 ppt | < 7 | < 7 |
| PFUnA | 2 ppt | < 2 | < 2 |
| lithium | 9 µg/L | 147 | 156 |
EPDS010- ID#09356 facility 09356 · sample point EPDS010 · groundwater
| Compound | MRL | 2024-07-09 SE1 | 2025-01-14 SE2 |
|---|---|---|---|
| PFBS | 3 ppt | 3.8 | 4.3 |
| PFHxA | 3 ppt | 3.2 | 3.8 |
| PFHxS | 3 ppt | 6 | 6.8 |
| PFOA | 4 ppt | 8 | 9.9 |
| PFOS | 4 ppt | 24.2 | 26.7 |
| PFPeA | 3 ppt | 3.3 | 4.1 |
| 11Cl-PF3OUdS | 5 ppt | < 5 | < 5 |
| 4:2 FTS | 3 ppt | < 3 | < 3 |
| 6:2 FTS | 5 ppt | < 5 | < 5 |
| 8:2 FTS | 5 ppt | < 5 | < 5 |
| 9Cl-PF3ONS | 2 ppt | < 2 | < 2 |
| ADONA | 3 ppt | < 3 | < 3 |
| HFPO-DA | 5 ppt | < 5 | < 5 |
| NEtFOSAA | 5 ppt | < 5 | < 5 |
| NFDHA | 20 ppt | < 20 | < 20 |
| NMeFOSAA | 6 ppt | < 6 | < 6 |
| PFBA | 5 ppt | < 5 | < 5 |
| PFDA | 3 ppt | < 3 | < 3 |
| PFDoA | 3 ppt | < 3 | < 3 |
| PFEESA | 3 ppt | < 3 | < 3 |
| PFHpA | 3 ppt | < 3 | < 3 |
| PFHpS | 3 ppt | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | < 3 |
| PFMPA | 4 ppt | < 4 | < 4 |
| PFNA | 4 ppt | < 4 | < 4 |
| PFPeS | 4 ppt | < 4 | < 4 |
| PFTA | 8 ppt | < 8 | < 8 |
| PFTrDA | 7 ppt | < 7 | < 7 |
| PFUnA | 2 ppt | < 2 | < 2 |
| lithium | 9 µg/L | 137 | 135 |
EPDS011- ID#09357 facility 09357 · sample point EPDS011 · groundwater
| Compound | MRL | 2024-07-10 SE1 | 2025-03-18 SE2 |
|---|---|---|---|
| PFHxS | 3 ppt | 4.5 | 5.8 |
| PFOA | 4 ppt | 4 | 5.5 |
| PFOS | 4 ppt | 7 | 9.3 |
| 11Cl-PF3OUdS | 5 ppt | < 5 | < 5 |
| 4:2 FTS | 3 ppt | < 3 | < 3 |
| 6:2 FTS | 5 ppt | < 5 | < 5 |
| 8:2 FTS | 5 ppt | < 5 | < 5 |
| 9Cl-PF3ONS | 2 ppt | < 2 | < 2 |
| ADONA | 3 ppt | < 3 | < 3 |
| HFPO-DA | 5 ppt | < 5 | < 5 |
| NEtFOSAA | 5 ppt | < 5 | < 5 |
| NFDHA | 20 ppt | < 20 | < 20 |
| NMeFOSAA | 6 ppt | < 6 | < 6 |
| PFBA | 5 ppt | < 5 | < 5 |
| PFBS | 3 ppt | < 3 | < 3 |
| PFDA | 3 ppt | < 3 | < 3 |
| PFDoA | 3 ppt | < 3 | < 3 |
| PFEESA | 3 ppt | < 3 | < 3 |
| PFHpA | 3 ppt | < 3 | < 3 |
| PFHpS | 3 ppt | < 3 | < 3 |
| PFHxA | 3 ppt | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | < 3 |
| PFMPA | 4 ppt | < 4 | < 4 |
| PFNA | 4 ppt | < 4 | < 4 |
| PFPeA | 3 ppt | < 3 | < 3 |
| PFPeS | 4 ppt | < 4 | < 4 |
| PFTA | 8 ppt | < 8 | < 8 |
| PFTrDA | 7 ppt | < 7 | < 7 |
| PFUnA | 2 ppt | < 2 | < 2 |
| lithium | 9 µg/L | 159 | 170 |
EPDS012- ID#09358 facility 09358 · sample point EPDS012 · groundwater
| Compound | MRL | 2024-07-10 SE1 | 2025-01-15 SE2 |
|---|---|---|---|
| 11Cl-PF3OUdS | 5 ppt | < 5 | < 5 |
| 4:2 FTS | 3 ppt | < 3 | < 3 |
| 6:2 FTS | 5 ppt | < 5 | < 5 |
| 8:2 FTS | 5 ppt | < 5 | < 5 |
| 9Cl-PF3ONS | 2 ppt | < 2 | < 2 |
| ADONA | 3 ppt | < 3 | < 3 |
| HFPO-DA | 5 ppt | < 5 | < 5 |
| NEtFOSAA | 5 ppt | < 5 | < 5 |
| NFDHA | 20 ppt | < 20 | < 20 |
| NMeFOSAA | 6 ppt | < 6 | < 6 |
| PFBA | 5 ppt | < 5 | < 5 |
| PFBS | 3 ppt | < 3 | < 3 |
| PFDA | 3 ppt | < 3 | < 3 |
| PFDoA | 3 ppt | < 3 | < 3 |
| PFEESA | 3 ppt | < 3 | < 3 |
| PFHpA | 3 ppt | < 3 | < 3 |
| PFHpS | 3 ppt | < 3 | < 3 |
| PFHxA | 3 ppt | < 3 | < 3 |
| PFHxS | 3 ppt | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | < 3 |
| PFMPA | 4 ppt | < 4 | < 4 |
| PFNA | 4 ppt | < 4 | < 4 |
| PFOA | 4 ppt | < 4 | < 4 |
| PFOS | 4 ppt | < 4 | < 4 |
| PFPeA | 3 ppt | < 3 | < 3 |
| PFPeS | 4 ppt | < 4 | < 4 |
| PFTA | 8 ppt | < 8 | < 8 |
| PFTrDA | 7 ppt | < 7 | < 7 |
| PFUnA | 2 ppt | < 2 | < 2 |
| lithium | 9 µg/L | 139 | 151 |
EPDS013- ID#21843 facility 21843 · sample point EPDS013 · groundwater
| Compound | MRL | 2024-07-11 SE1 | 2025-01-15 SE2 |
|---|---|---|---|
| PFBA | 5 ppt | < 5 | 5.9 |
| PFBS | 3 ppt | 7.6 | 10.2 |
| PFHpA | 3 ppt | 4.8 | 6.3 |
| PFHxA | 3 ppt | 9 | 13.5 |
| PFHxS | 3 ppt | 11.4 | 16 |
| PFOA | 4 ppt | 9.5 | 13.1 |
| PFOS | 4 ppt | 20 | 29.2 |
| PFPeA | 3 ppt | 7.5 | 11.5 |
| 11Cl-PF3OUdS | 5 ppt | < 5 | < 5 |
| 4:2 FTS | 3 ppt | < 3 | < 3 |
| 6:2 FTS | 5 ppt | < 5 | < 5 |
| 8:2 FTS | 5 ppt | < 5 | < 5 |
| 9Cl-PF3ONS | 2 ppt | < 2 | < 2 |
| ADONA | 3 ppt | < 3 | < 3 |
| HFPO-DA | 5 ppt | < 5 | < 5 |
| NEtFOSAA | 5 ppt | < 5 | < 5 |
| NFDHA | 20 ppt | < 20 | < 20 |
| NMeFOSAA | 6 ppt | < 6 | < 6 |
| PFDA | 3 ppt | < 3 | < 3 |
| PFDoA | 3 ppt | < 3 | < 3 |
| PFEESA | 3 ppt | < 3 | < 3 |
| PFHpS | 3 ppt | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | < 3 |
| PFMPA | 4 ppt | < 4 | < 4 |
| PFNA | 4 ppt | < 4 | < 4 |
| PFPeS | 4 ppt | < 4 | < 4 |
| PFTA | 8 ppt | < 8 | < 8 |
| PFTrDA | 7 ppt | < 7 | < 7 |
| PFUnA | 2 ppt | < 2 | < 2 |
| lithium | 9 µg/L | 232 | 258 |
EPDS014- ID#21844 facility 21844 · sample point EPDS014 · groundwater
| Compound | MRL | 2024-07-11 SE1 | 2025-01-16 SE2 |
|---|---|---|---|
| PFBS | 3 ppt | 5.1 | 5.9 |
| PFOS | 4 ppt | 5.1 | 5.6 |
| 11Cl-PF3OUdS | 5 ppt | < 5 | < 5 |
| 4:2 FTS | 3 ppt | < 3 | < 3 |
| 6:2 FTS | 5 ppt | < 5 | < 5 |
| 8:2 FTS | 5 ppt | < 5 | < 5 |
| 9Cl-PF3ONS | 2 ppt | < 2 | < 2 |
| ADONA | 3 ppt | < 3 | < 3 |
| HFPO-DA | 5 ppt | < 5 | < 5 |
| NEtFOSAA | 5 ppt | < 5 | < 5 |
| NFDHA | 20 ppt | < 20 | < 20 |
| NMeFOSAA | 6 ppt | < 6 | < 6 |
| PFBA | 5 ppt | < 5 | < 5 |
| PFDA | 3 ppt | < 3 | < 3 |
| PFDoA | 3 ppt | < 3 | < 3 |
| PFEESA | 3 ppt | < 3 | < 3 |
| PFHpA | 3 ppt | < 3 | < 3 |
| PFHpS | 3 ppt | < 3 | < 3 |
| PFHxA | 3 ppt | < 3 | < 3 |
| PFHxS | 3 ppt | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | < 3 |
| PFMPA | 4 ppt | < 4 | < 4 |
| PFNA | 4 ppt | < 4 | < 4 |
| PFOA | 4 ppt | < 4 | < 4 |
| PFPeA | 3 ppt | < 3 | < 3 |
| PFPeS | 4 ppt | < 4 | < 4 |
| PFTA | 8 ppt | < 8 | < 8 |
| PFTrDA | 7 ppt | < 7 | < 7 |
| PFUnA | 2 ppt | < 2 | < 2 |
| lithium | 9 µg/L | 278 | 229 |
EPDS016- ID#21845 facility 21845 · sample point EPDS016 · groundwater
| Compound | MRL | 2024-07-11 SE1 | 2025-01-16 SE2 |
|---|---|---|---|
| 11Cl-PF3OUdS | 5 ppt | < 5 | < 5 |
| 4:2 FTS | 3 ppt | < 3 | < 3 |
| 6:2 FTS | 5 ppt | < 5 | < 5 |
| 8:2 FTS | 5 ppt | < 5 | < 5 |
| 9Cl-PF3ONS | 2 ppt | < 2 | < 2 |
| ADONA | 3 ppt | < 3 | < 3 |
| HFPO-DA | 5 ppt | < 5 | < 5 |
| NEtFOSAA | 5 ppt | < 5 | < 5 |
| NFDHA | 20 ppt | < 20 | < 20 |
| NMeFOSAA | 6 ppt | < 6 | < 6 |
| PFBA | 5 ppt | < 5 | < 5 |
| PFBS | 3 ppt | < 3 | < 3 |
| PFDA | 3 ppt | < 3 | < 3 |
| PFDoA | 3 ppt | < 3 | < 3 |
| PFEESA | 3 ppt | < 3 | < 3 |
| PFHpA | 3 ppt | < 3 | < 3 |
| PFHpS | 3 ppt | < 3 | < 3 |
| PFHxA | 3 ppt | < 3 | < 3 |
| PFHxS | 3 ppt | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | < 3 |
| PFMPA | 4 ppt | < 4 | < 4 |
| PFNA | 4 ppt | < 4 | < 4 |
| PFOA | 4 ppt | < 4 | < 4 |
| PFOS | 4 ppt | < 4 | < 4 |
| PFPeA | 3 ppt | < 3 | < 3 |
| PFPeS | 4 ppt | < 4 | < 4 |
| PFTA | 8 ppt | < 8 | < 8 |
| PFTrDA | 7 ppt | < 7 | < 7 |
| PFUnA | 2 ppt | < 2 | < 2 |
| lithium | 9 µg/L | 133 | 137 |
EPDS100- ID#08463 facility 08463 · sample point EPDS100 · surface water
| Compound | MRL | 2023-07-13 SE1 | 2023-08-07 SE1 | 2023-10-16 SE2 | 2023-10-25 SE2 | 2024-01-02 SE3 | 2024-04-02 SE4 |
|---|---|---|---|---|---|---|---|
| PFBS | 3 ppt | – | 10 | – | 16.8 | 4.1 | 6.8 |
| 11Cl-PF3OUdS | 5 ppt | – | < 5 | – | < 5 | < 5 | < 5 |
| 4:2 FTS | 3 ppt | – | < 3 | – | < 3 | < 3 | < 3 |
| 6:2 FTS | 5 ppt | – | < 5 | – | < 5 | < 5 | < 5 |
| 8:2 FTS | 5 ppt | – | < 5 | – | < 5 | < 5 | < 5 |
| 9Cl-PF3ONS | 2 ppt | – | < 2 | – | < 2 | < 2 | < 2 |
| ADONA | 3 ppt | – | < 3 | – | < 3 | < 3 | < 3 |
| HFPO-DA | 5 ppt | – | < 5 | – | < 5 | < 5 | < 5 |
| NEtFOSAA | 5 ppt | < 5 | – | < 5 | – | < 5 | < 5 |
| NFDHA | 20 ppt | – | < 20 | – | < 20 | < 20 | < 20 |
| NMeFOSAA | 6 ppt | < 6 | – | < 6 | – | < 6 | < 6 |
| PFBA | 5 ppt | – | < 5 | – | < 5 | < 5 | < 5 |
| PFDA | 3 ppt | – | < 3 | – | < 3 | < 3 | < 3 |
| PFDoA | 3 ppt | – | < 3 | – | < 3 | < 3 | < 3 |
| PFEESA | 3 ppt | – | < 3 | – | < 3 | < 3 | < 3 |
| PFHpA | 3 ppt | – | < 3 | – | < 3 | < 3 | < 3 |
| PFHpS | 3 ppt | – | < 3 | – | < 3 | < 3 | < 3 |
| PFHxA | 3 ppt | – | < 3 | – | < 3 | < 3 | < 3 |
| PFHxS | 3 ppt | – | < 3 | – | < 3 | < 3 | < 3 |
| PFMBA | 3 ppt | – | < 3 | – | < 3 | < 3 | < 3 |
| PFMPA | 4 ppt | – | < 4 | – | < 4 | < 4 | < 4 |
| PFNA | 4 ppt | – | < 4 | – | < 4 | < 4 | < 4 |
| PFOA | 4 ppt | – | < 4 | – | < 4 | < 4 | < 4 |
| PFOS | 4 ppt | – | < 4 | – | < 4 | < 4 | < 4 |
| PFPeA | 3 ppt | – | < 3 | – | < 3 | < 3 | < 3 |
| PFPeS | 4 ppt | – | < 4 | – | < 4 | < 4 | < 4 |
| PFTA | 8 ppt | < 8 | – | < 8 | – | < 8 | < 8 |
| PFTrDA | 7 ppt | < 7 | – | < 7 | – | < 7 | < 7 |
| PFUnA | 2 ppt | – | < 2 | – | < 2 | < 2 | < 2 |
| lithium | 9 µg/L | 125 | – | 137 | – | 34.6 | 57.5 |
EPDS200- ID#08464 facility 08464 · sample point EPDS200 · surface water
| Compound | MRL | 2023-07-13 SE1 | 2023-10-16 SE2 | 2024-01-02 SE3 | 2024-01-08 SE3 | 2024-02-26 SE2 | 2024-04-02 SE4 |
|---|---|---|---|---|---|---|---|
| PFBS | 3 ppt | 8 | – | 8.3 | – | 11.7 | 6.5 |
| 11Cl-PF3OUdS | 5 ppt | < 5 | – | < 5 | – | < 5 | < 5 |
| 4:2 FTS | 3 ppt | < 3 | – | < 3 | – | < 3 | < 3 |
| 6:2 FTS | 5 ppt | < 5 | – | < 5 | – | < 5 | < 5 |
| 8:2 FTS | 5 ppt | < 5 | – | < 5 | – | < 5 | < 5 |
| 9Cl-PF3ONS | 2 ppt | < 2 | – | < 2 | – | < 2 | < 2 |
| ADONA | 3 ppt | < 3 | – | < 3 | – | < 3 | < 3 |
| HFPO-DA | 5 ppt | < 5 | – | < 5 | – | < 5 | < 5 |
| NEtFOSAA | 5 ppt | < 5 | < 5 | – | < 5 | – | < 5 |
| NFDHA | 20 ppt | < 20 | – | < 20 | – | < 20 | < 20 |
| NMeFOSAA | 6 ppt | < 6 | < 6 | – | < 6 | – | < 6 |
| PFBA | 5 ppt | < 5 | – | < 5 | – | < 5 | < 5 |
| PFDA | 3 ppt | < 3 | – | < 3 | – | < 3 | < 3 |
| PFDoA | 3 ppt | < 3 | – | < 3 | – | < 3 | < 3 |
| PFEESA | 3 ppt | < 3 | – | < 3 | – | < 3 | < 3 |
| PFHpA | 3 ppt | < 3 | – | < 3 | – | < 3 | < 3 |
| PFHpS | 3 ppt | < 3 | – | < 3 | – | < 3 | < 3 |
| PFHxA | 3 ppt | < 3 | – | < 3 | – | < 3 | < 3 |
| PFHxS | 3 ppt | < 3 | – | < 3 | – | < 3 | < 3 |
| PFMBA | 3 ppt | < 3 | – | < 3 | – | < 3 | < 3 |
| PFMPA | 4 ppt | < 4 | – | < 4 | – | < 4 | < 4 |
| PFNA | 4 ppt | < 4 | – | < 4 | – | < 4 | < 4 |
| PFOA | 4 ppt | < 4 | – | < 4 | – | < 4 | < 4 |
| PFOS | 4 ppt | < 4 | – | < 4 | – | < 4 | < 4 |
| PFPeA | 3 ppt | < 3 | – | < 3 | – | < 3 | < 3 |
| PFPeS | 4 ppt | < 4 | – | < 4 | – | < 4 | < 4 |
| PFTA | 8 ppt | < 8 | < 8 | – | < 8 | – | < 8 |
| PFTrDA | 7 ppt | < 7 | < 7 | – | < 7 | – | < 7 |
| PFUnA | 2 ppt | < 2 | – | < 2 | – | < 2 | < 2 |
| lithium | 9 µg/L | 130 | 138 | 96.1 | – | – | 80.8 |
Statistics by compound
| Compound | Results | Detected | Highest (date) | Mean bounds | KM median | P75 | P90 | P95 |
|---|---|---|---|---|---|---|---|---|
| lithium | 24 | 100% | 278 2024-07-11 | 150.71–150.71 | 138 | 162 | 232 | 258 |
| PFBS | 24 | 67% | 25.7 2024-07-09 | 6.66–7.66 | 5.1 | 8.3 | 16.8 | 25 |
| PFOS | 24 | 42% | 55.8 2025-01-14 | 9.89–12.22 | <MRL | 9.3 | 29.2 | 54.5 |
| PFHxS | 24 | 33% | 70.5 2024-07-09 | 7.75–9.75 | <MRL | 5.8 | 16 | 65 |
| PFOA | 24 | 33% | 38.7 2025-01-14 | 5.25–7.91 | <MRL | 5.5 | 13.1 | 37.2 |
| PFHxA | 24 | 25% | 22.5 2024-07-09 | 3.06–5.31 | <MRL | <MRL | 13.5 | 21.4 |
| PFPeA | 24 | 25% | 14.4 2024-07-09 | 2.3–4.55 | <MRL | <MRL | 11.5 | 14.4 |
| PFHpA | 24 | 17% | 7 2024-07-09 | 1.01–3.51 | <MRL | <MRL | 6.1 | 6.3 |
| PFBA | 24 | 12% | 9.9 2025-01-14 | 1.07–5.44 | <MRL | <MRL | 5.9 | 9.8 |
| PFPeS | 24 | 8% | 8 2024-07-09 | 0.63–4.3 | <MRL | <MRL | <MRL | 7.1 |
Never detected (20): 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, 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 2023-01-03 to 2026-06-02; 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 e94d59d510ac · 2026-10-18T04:09Z · UCMR 5 release Jul2026 · SDWIS 2026Q3. Data and methods.