No health-based violations on EPA record since 2016.
Serves about 7,784 people (2,423 connections) with groundwater from its own wells.
From EPA's record for CA2410006. PurityMap is independent of Delhi 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, in May 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanesulfonic acid (PFOS) | 7.3 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| Perfluorohexanesulfonic acid (PFHxS) | 8 ng/L | 10 ng/L federal MCL (2024) | Within a historical reference; current applicability unverified | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| 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 | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| 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 | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| 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 | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| 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 | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| 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 | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| 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 | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| 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 | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-05-05 | UCMR5 Analytical Results: DELHI CWD (CA2410006) |
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.
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Follow this water →Delhi CWD's phone number on EPA record is 209-585-3003. Its mailing address is P.O. BOX 639, DELHI, CA 95315.
According to EPA's record, Delhi CWD uses groundwater from its own wells.
No health-based violations on EPA record since 2016. 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 Delhi CWD'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 Delhi CWD. Its phone number on EPA record is 209-585-3003. Its mailing address on EPA record is P.O. BOX 639, DELHI, CA 95315. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.