No health-based violations on EPA record since 2016.
Serves about 13,898 people (4,603 connections) with surface water bought from California Water Service Co and Calleguas Municipal Water Dist.
From EPA's record for CA5610043. PurityMap is independent of Triunfo Water & Sanitation District.
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No health-based violations in the last 10 years, from EPA's SDWIS compliance database.
EPA required this system to test for 30 unregulated and emerging contaminants, from September 2024 to June 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 9.8 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Within the referenced health-based guidance value | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| 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 | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| 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 | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| 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 | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| 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 | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| 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 | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| 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 | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-09-24 to 2025-06-03 | UCMR5 Analytical Results: TRIUNFO WATER & SANITATION DISTRICT (CA5610043) |
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 →Triunfo Water & Sanitation District's phone number on EPA record is 805-658-4643. Its mailing address is 370 N. Westlake Boulevard, Suite 100, WESTLAKE VILLAGE, CA 91362.
According to EPA's record, Triunfo Water & Sanitation District uses surface water bought from California Water Service Co and Calleguas Municipal Water Dist.
No health-based violations on EPA record since 2016. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in Triunfo Water & Sanitation District'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 Triunfo Water & Sanitation District. Its phone number on EPA record is 805-658-4643. Its mailing address on EPA record is 370 N. Westlake Boulevard, Suite 100, WESTLAKE VILLAGE, CA 91362. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.