No open EPA violations as of 2026-09-16.
EPA record checked 2026-10-06
From EPA's record for CA3710037. PurityMap is independent of Padre Dam Municipal Water District.
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31 results are on record. These 5 come first: results above a listed reference, then those closest to a legal limit.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 47 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Above the referenced health-based guidance value | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| Lead (90th percentile) | 1.1 µg/L | 15 µg/L federal action level | Below the listed reference | 2023–2025 monitoring period | Lead & Copper Rule 90th-percentile: PADRE DAM MWD (CA3710037) |
| Perfluorobutanoic acid (PFBA) | 5.8 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| 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 | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| 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 | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| 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 | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| 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 | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| 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 | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| 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 | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-02-16 to 2023-11-15 | UCMR5 Analytical Results: PADRE DAM MWD (CA3710037) |
0health-based violations in the last 10 years · none open as of 2026-09-16
From EPA SDWIS. A clean violation history means no enforcement action was recorded; it does not cover contaminants without a limit. Meeting a federal limit is a compliance fact, not a health clearance.
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.
Tested your own tap? Read your results →
One email when a new sampling round is published or a result moves across its reference.
Follow this water →Its phone number on EPA record is 619-258-4673 and its mailing address is P.O. BOX 719003, SANTEE, CA 92072. These details come from the system's EPA record.
PurityMap has no verified website for Padre Dam Municipal Water District. Its mailing address on EPA record is P.O. BOX 719003, SANTEE, CA 92072. Your water bill lists the ways to pay. PurityMap does not take payments.
EPA's records list Padre Dam Municipal Water District as serving Santee, California. Your water bill names your supplier.
PurityMap's record for Padre Dam Municipal Water District holds results for 29 PFAS substances. 1 was detected, and none is above a federal legal limit. Each result links to its source in the city report.
No open EPA violations as of 2026-09-16: that is what EPA's record shows for Padre Dam Municipal Water District. The record comes from EPA's SDWIS compliance database.
Padre Dam Municipal Water District is on EPA record as drawing from surface water.
Start with the hot-or-cold tap check. Where Padre Dam Municipal Water District reported something related, it's shown below.
Lead at Padre Dam Municipal Water District: 1.1 µg/L (90th percentile, 2023–2025 monitoring period). Lead has no taste, so a taste neither shows nor rules it out.