No health-based violations on EPA record since 2016.
Serves about 27,072 people (7,666 connections) with groundwater from its own wells, and buys water from City of Arcadia.
From EPA's record for CA1910212. PurityMap is independent of GSWC-South Arcadia.
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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 2023 to July 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanesulfonic acid (PFOS) | 22 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| Perfluorooctanoic acid (PFOA) | 5.5 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| Perfluorohexanesulfonic acid (PFHxS) | 7 ng/L | 10 ng/L federal MCL (2024) | Within a historical reference; current applicability unverified | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| 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 | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| 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 | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| 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 | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| 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 | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| 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 | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| 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 | 2023-09-19 to 2024-06-13 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| 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 | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-09-19 to 2024-07-10 | UCMR5 Analytical Results: GSWC-SOUTH ARCADIA (CA1910212) |
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 →GSWC-South Arcadia's phone number on EPA record is 760-515-8322. Its mailing address is 401 S. San Dimas Canyon Road, SAN DIMAS, CA 91773.
According to EPA's record, GSWC-South Arcadia uses groundwater from its own wells, and buys water from City of Arcadia.
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 GSWC-South Arcadia'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 GSWC-South Arcadia. Its phone number on EPA record is 760-515-8322. Its mailing address on EPA record is 401 S. San Dimas Canyon Road, SAN DIMAS, CA 91773. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.