No open health-based violations on EPA record in the last 10 years.
Serves about 10,986 people (93 connections) with groundwater from its own wells.
From EPA's record for CA4910027. PurityMap is independent of Sonoma State University.
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1 health-based violation in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From May 2017 | Groundwater Rule | – | – | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, from December 2023 to June 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 11 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 | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| 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 | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| 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 | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| 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 | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| 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 | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| 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 | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-12-05 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-12-05 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| 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 | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-12-05 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-12-05 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-12-05 to 2024-06-04 | UCMR5 Analytical Results: SONOMA STATE UNIVERSITY (CA4910027) |
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 →Sonoma State University's phone number on EPA record is 707-664-3408. Its mailing address is 1801 East Cotati Avenue, ROHNERT PARK, CA 94928.
According to EPA's record, Sonoma State University uses groundwater from its own wells.
EPA's record shows 1 health-based violation for Sonoma State University in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. 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 Sonoma State University's latest lead and copper round, which ended in December 2024. The federal action level is 15 µg/L.
PurityMap has no verified website for Sonoma State University. Its phone number on EPA record is 707-664-3408. Its mailing address on EPA record is 1801 East Cotati Avenue, ROHNERT PARK, CA 94928. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.