No health-based violations on EPA record since 2016.
Serves about 8,243 people (2,500 connections) with groundwater from its own wells, and buys water from Rowland Water District, San Gabriel County WD, City of Industry Waterworks Systems and 1 more.
From EPA's record for CA1910060. PurityMap is independent of La Puente Valley CWD.
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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 January 2023 to July 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 | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| 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 | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| 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 | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| 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 | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| 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 | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| 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 | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| 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 | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-01-27 to 2023-07-17 | UCMR5 Analytical Results: LA PUENTE VALLEY CWD (CA1910060) |
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 →La Puente Valley CWD's phone number on EPA record is 626-330-2126. Its mailing address is 112 N. FIRST STREET, LA PUENTE, CA 91744.
According to EPA's record, La Puente Valley CWD uses groundwater from its own wells, and buys water from Rowland Water District, San Gabriel County WD, City of Industry Waterworks Systems and 1 more.
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 La Puente Valley CWD's latest lead and copper round, which ended in December 2028. The federal action level is 15 µg/L.
PurityMap has no verified website for La Puente Valley CWD. Its phone number on EPA record is 626-330-2126. Its mailing address on EPA record is 112 N. FIRST STREET, LA PUENTE, CA 91744. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.