- PWSID
- AZ0407305
- State
- Arizona
- System type
- community water system (CWS)
- Population served
- 8,440
- City
- Luke Afb
- Counties
- Maricopa County
- Primary source water
- surface water (purchased)
- UCMR 5 sampling
- 2023-09-12 to 2024-07-15 · 4 entry point(s) · water types: GW;MX
- Service-area boundary
- authoritative
PFOS 1–3 × its limit highest single result
PFOS 1–3 × 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
- Valley Utilities Water Company Glendale (AZ0407079)
Seller's highest results: PFOA <MRL · PFOS <MRL · HI 0 · detected: PFBA;PFHpA;PFHxA;PFPeA - Epcor - Agua Fria (AZ0407695)
Seller's highest results: PFOA <MRL · PFOS <MRL · HI 0 - Liberty Water Lpsco (AZ0407046)
Seller's highest results: PFOA 10.2 ppt · PFOS 14.1 ppt · HI 1.893 · detected: PFBA;PFBS;PFHpA;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 result | Worst entry-point average* | Limit | |
|---|---|---|---|
| PFOA (ppt) | 10 | 9.7 | 4 |
| PFOS (ppt) | 11.7 | 11.5 | 4 |
| Hazard Index | 0.873 | 0.542 | 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 2023-09-12 to 2024-07-15 · 4 entry point(s) · water types: GW;MX · 18 sampling visits. PFAS in ppt (ng/L).
| Date | Entry point | Event | PFOA | PFOS | HI | Other detections |
|---|---|---|---|---|---|---|
| 2023-09-12 | Consecutive Connection to EPCOR Utilities (MX) | SE1 | <4 | <4 | 0 | lithium 60.4 µg/L |
| 2023-09-12 | Consecutive Connection to Liberty Utilities (GW) | SE1 | n/a | n/a | 0 | lithium 92.2 µg/L |
| 2023-09-12 | Consecutive Connection to Valley Utilities (GW) | SE1 | n/a | n/a | n/a | lithium 129 µg/L |
| 2023-09-12 | Luke Water Treatment Facility (MX) | SE1 | <4 | <4 | 0 | lithium 80 µg/L |
| 2023-12-06 | Consecutive Connection to EPCOR Utilities (MX) | SE2 | <4 | <4 | 0 | lithium 52.8 µg/L |
| 2023-12-06 | Luke Water Treatment Facility (MX) | SE2 | n/a | n/a | n/a | lithium 81.2 µg/L |
| 2024-01-09 | Consecutive Connection to Liberty Utilities (GW) | SE1 | 10 | 11.7 | 0.873 | PFHpA 3.8, PFHxA 8, PFPeA 12.4 |
| 2024-02-13 | Luke Water Treatment Facility (MX) | SE2 | <4 | <4 | 0 | none |
| 2024-03-05 | Consecutive Connection to EPCOR Utilities (MX) | SE3 | <4 | <4 | 0 | lithium 63.1 µg/L |
| 2024-03-05 | Consecutive Connection to Liberty Utilities (GW) | SE2 | 9.4 | 11.3 | 0.753 | PFHpA 3.5, PFHxA 8.1, PFPeA 11.2, lithium 80.4 µg/L |
| 2024-03-05 | Consecutive Connection to Valley Utilities (GW) | SE2 | n/a | n/a | n/a | lithium 103 µg/L |
| 2024-03-05 | Luke Water Treatment Facility (MX) | SE3 | <4 | <4 | 0 | lithium 74 µg/L |
| 2024-04-23 | Consecutive Connection to Valley Utilities (GW) | SE2 | <4 | <4 | 0 | none |
| 2024-05-13 | Luke Water Treatment Facility (MX) | SE3 | n/a | n/a | n/a | none |
| 2024-06-03 | Consecutive Connection to EPCOR Utilities (MX) | SE4 | n/a | n/a | n/a | lithium 55.1 µg/L |
| 2024-06-03 | Luke Water Treatment Facility (MX) | SE4 | <4 | <4 | 0 | lithium 81.5 µg/L |
| 2024-07-08 | Consecutive Connection to EPCOR Utilities (MX) | SE4 | <4 | <4 | 0 | none |
| 2024-07-15 | Consecutive Connection to Valley Utilities (GW) | SE1 | <4 | <4 | 0 | none |
“<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.
Consecutive Connection to EPCOR Utilities facility 10002 · sample point CC003 · MX
| Compound | MRL | 2023-09-12 SE1 | 2023-12-06 SE2 | 2024-03-05 SE3 | 2024-06-03 SE4 | 2024-07-08 SE4 |
|---|---|---|---|---|---|---|
| 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 |
| PFBS | 3 ppt | < 3 | < 3 | < 3 | – | < 3 |
| 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 | 60.4 | 52.8 | 63.1 | 55.1 | – |
Consecutive Connection to Liberty Utilities facility 10004 · sample point CC002 · groundwater
| Compound | MRL | 2023-09-12 SE1 | 2024-01-09 SE1 | 2024-03-05 SE2 |
|---|---|---|---|---|
| PFBS | 3 ppt | – | 6.5 | 5.7 |
| PFHpA | 3 ppt | – | 3.8 | 3.5 |
| PFHxA | 3 ppt | – | 8 | 8.1 |
| PFHxS | 3 ppt | – | 8.7 | 7.5 |
| PFOA | 4 ppt | – | 10 | 9.4 |
| PFOS | 4 ppt | – | 11.7 | 11.3 |
| PFPeA | 3 ppt | – | 12.4 | 11.2 |
| 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 |
| 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 | 92.2 | – | 80.4 |
Consecutive Connection to Valley Utilities facility 10003 · sample point CC001 · groundwater
| Compound | MRL | 2023-09-12 SE1 | 2024-03-05 SE2 | 2024-04-23 SE2 | 2024-07-15 SE1 |
|---|---|---|---|---|---|
| 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 | 129 | 103 | – | – |
Luke Water Treatment Facility facility 10001 · sample point EPDS1 · MX
| Compound | MRL | 2023-09-12 SE1 | 2023-12-06 SE2 | 2024-02-13 SE2 | 2024-03-05 SE3 | 2024-05-13 SE3 | 2024-06-03 SE4 |
|---|---|---|---|---|---|---|---|
| 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 |
| PFBS | 3 ppt | < 3 | – | < 3 | < 3 | – | < 3 |
| 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 | 80 | 81.2 | – | 74 | – | 81.5 |
Statistics by compound
| Compound | Results | Detected | Highest (date) | Mean bounds | KM median | P75 | P90 | P95 |
|---|---|---|---|---|---|---|---|---|
| lithium | 12 | 100% | 129 2023-09-12 | 79.39–79.39 | 80 | 81.5 | 103 | 129 |
| PFBS | 12 | 17% | 6.5 2024-01-09 | 1.02–3.52 | <MRL | <MRL | 5.7 | 6.5 |
| PFHpA | 12 | 17% | 3.8 2024-01-09 | 0.61–3.11 | <MRL | <MRL | 3.5 | 3.8 |
| PFHxA | 12 | 17% | 8.1 2024-03-05 | 1.34–3.84 | <MRL | <MRL | 8 | 8.1 |
| PFHxS | 12 | 17% | 8.7 2024-01-09 | 1.35–3.85 | <MRL | <MRL | 7.5 | 8.7 |
| PFOA | 12 | 17% | 10 2024-01-09 | 1.62–4.95 | <MRL | <MRL | 9.4 | 10 |
| PFOS | 12 | 17% | 11.7 2024-01-09 | 1.92–5.25 | <MRL | <MRL | 11.3 | 11.7 |
| PFPeA | 12 | 17% | 12.4 2024-01-09 | 1.97–4.47 | <MRL | <MRL | 11.2 | 12.4 |
Never detected (22): 11Cl-PF3OUdS, 4:2 FTS, 6:2 FTS, 8:2 FTS, 9Cl-PF3ONS, ADONA, HFPO-DA, NEtFOSAA, NFDHA, NMeFOSAA, PFBA, 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 2023-01-03 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.