1 open health-based violation on EPA record.
Serves about 9,745 people (2,831 connections) with groundwater from its own wells.
From EPA's record for CA2410010. PurityMap is independent of Winton Water & Sanitary Dist.
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1 health-based violation in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From October 2024 | Lead and copper rule revisions | – | – | Unaddressed |
EPA required this system to test for 30 unregulated and emerging contaminants, from May 2023 to November 2023.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| Lithium | < 9 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| Perfluorobutanesulfonic acid (PFBS) | < 3 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-05-01 to 2023-11-14 | UCMR5 Analytical Results: WINTON WATER & SANITARY DIST (CA2410010) |
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
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Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
Get PurityMap updates about this water system.
Follow this water →Winton Water & Sanitary Dist's phone number on EPA record is 209-358-2367. Its mailing address is P.O. BOX 970, WINTON, CA 95388.
According to EPA's record, Winton Water & Sanitary Dist uses groundwater from its own wells.
EPA's record shows 1 health-based violation for Winton Water & Sanitary Dist in the 10 years to July 9, 2026. EPA's record lists 1 open health-based violation. EPA also lists 2 missed or late tests or reports in 10 years. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in Winton Water & Sanitary Dist's latest lead and copper round, which ended in December 2025. The federal action level is 15 µg/L.
PurityMap has no verified website for Winton Water & Sanitary Dist. Its phone number on EPA record is 209-358-2367. Its mailing address on EPA record is P.O. BOX 970, WINTON, CA 95388. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.