No health-based violations on EPA record since 2016.
Serves about 45,128 people (13,715 connections) with surface water bought from Calleguas Municipal Water Dist.
From EPA's record for CA5610059. PurityMap is independent of Golden State Water Company.
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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 June 2024 to March 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 35.5 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 | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| 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 | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| 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 | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| 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 | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| 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 | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| 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 | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| 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 | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-06-11 to 2025-03-11 | UCMR5 Analytical Results: GOLDEN STATE WATER COMPANY - SIMI VALLEY (CA5610059) |
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 →Golden State Water Company's phone number on EPA record is 916-853-3615. Its mailing address is 3005 GOLD CANAL DRIVE, RANCHO CORDOVA, CA 95670.
According to EPA's record, Golden State Water Company uses surface water bought from 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 Golden State Water Company'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 Golden State Water Company. Its phone number on EPA record is 916-853-3615. Its mailing address on EPA record is 3005 GOLD CANAL DRIVE, RANCHO CORDOVA, CA 95670. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.