No open health-based violations on EPA record in the last 10 years; latest legal-limit breach in the period starting July 2025.
Serves about 7,452 people (2,525 connections) with surface water from its own intake.
From EPA's record for CA2410002. PurityMap is independent of City of Dos Palos.
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27 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Jul–Sep 2025 | Total trihalomethanes (TTHM) | 0.0892 mg/L | 0.080 mg/L | Archived |
| Apr–Jun 2025 | Total trihalomethanes (TTHM) | 0.0878 mg/L | 0.080 mg/L | Archived |
| Jan–Mar 2025 | Total trihalomethanes (TTHM) | 0.0931 mg/L | 0.080 mg/L | Archived |
| Oct–Dec 2024 | Total trihalomethanes (TTHM) | 0.0984 mg/L | 0.080 mg/L | Archived |
| Apr–Jun 2024 | Total trihalomethanes (TTHM) | 0.1036 mg/L | 0.080 mg/L | Archived |
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| Apr–Jun 2023 | Total trihalomethanes (TTHM) | 0.084 mg/L | 0.080 mg/L | Archived |
| Jan–Mar 2023 | Total trihalomethanes (TTHM) | 0.107 mg/L | 0.080 mg/L | Archived |
| Oct–Dec 2022 | Total trihalomethanes (TTHM) | 104.5 µg/L | 0.080 mg/L | Archived |
| Jul–Sep 2021 | Total trihalomethanes (TTHM) | 143 µg/L | 0.080 mg/L | Archived |
| Apr–Jun 2021 | Total trihalomethanes (TTHM) | 120 µg/L | 0.080 mg/L | Archived |
| Jan–Mar 2021 | Haloacetic acids (HAA5) | 98 µg/L | 0.060 mg/L | Archived |
| Jan–Mar 2021 | Total trihalomethanes (TTHM) | 108 µg/L | 0.080 mg/L | Archived |
| From October 2020 | Carbon, total | – | TT | Archived |
| Oct–Dec 2020 | Total trihalomethanes (TTHM) | 106 µg/L | 0.080 mg/L | Archived |
| From July 2020 | Carbon, total | – | TT | Archived |
| Jul–Sep 2020 | Total trihalomethanes (TTHM) | 93.4 µg/L | 0.080 mg/L | Archived |
| From April 2020 | Carbon, total | – | TT | Archived |
| Apr–Jun 2020 | Total trihalomethanes (TTHM) | 0.091 mg/L | 0.080 mg/L | Archived |
| Oct–Dec 2019 | Total trihalomethanes (TTHM) | 0.11 mg/L | 0.080 mg/L | Archived |
| Apr–Jun 2019 | Total trihalomethanes (TTHM) | 0.089 mg/L | 0.080 mg/L | Archived |
| Jan–Mar 2019 | Total trihalomethanes (TTHM) | 0.105 mg/L | 0.080 mg/L | Archived |
| Oct–Dec 2018 | Total trihalomethanes (TTHM) | 0.104 mg/L | 0.080 mg/L | Archived |
| Jul–Sep 2018 | Total trihalomethanes (TTHM) | 0.094 mg/L | 0.080 mg/L | Archived |
| Apr–Jun 2017 | Total trihalomethanes (TTHM) | 97 µg/L | 0.080 mg/L | Archived |
| From January 2017 | Surface Water Treatment Rule | – | – | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from March 2023 to January 2024.
| 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 | 2023-06-21 to 2024-01-10 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| 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 | 2023-06-21 to 2024-01-10 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| 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 | 2023-06-21 to 2024-01-10 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| 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 | 2023-06-21 to 2024-01-10 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-06-21 to 2024-01-10 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| 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 | 2023-06-21 to 2024-01-10 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-06-21 to 2024-01-10 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| 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 | 2023-03-22 to 2023-12-06 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-22 to 2023-12-06 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-22 to 2023-12-06 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-06-21 to 2024-01-10 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-06-21 to 2024-01-10 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-06-21 to 2024-01-10 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-06-21 to 2024-01-10 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| 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 | 2023-06-21 to 2024-01-10 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-06-21 to 2024-01-10 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-06-21 to 2024-01-10 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-06-21 to 2024-01-10 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-06-21 to 2024-01-10 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-06-21 to 2024-01-10 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-06-21 to 2024-01-10 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-06-21 to 2024-01-10 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-06-21 to 2024-01-10 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-06-21 to 2024-01-10 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-06-21 to 2024-01-10 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-06-21 to 2024-01-10 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-06-21 to 2024-01-10 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-22 to 2023-12-06 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-22 to 2023-12-06 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-06-21 to 2024-01-10 | UCMR5 Analytical Results: CITY OF DOS PALOS (CA2410002) |
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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.
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Follow this water →City of Dos Palos's phone number on EPA record is 209-392-6201. Its mailing address is 2174 Blossom Street, DOS PALOS, CA 93620.
According to EPA's record, City of Dos Palos uses surface water from its own intake.
EPA's record shows 27 health-based violations for City of Dos Palos in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. The latest legal-limit breach on record was in the period starting July 2025. EPA also lists 1 missed or late test or report in 10 years. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in City of Dos Palos's latest lead and copper round, which ended in December 2023. The federal action level is 15 µg/L.
PurityMap has no verified website for City of Dos Palos. Its phone number on EPA record is 209-392-6201. Its mailing address on EPA record is 2174 Blossom Street, DOS PALOS, CA 93620. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.