No health-based violations on EPA record since 2016.
Serves about 16,273 people (288 connections) with surface water bought from San Francisco Regional Water System.
From EPA's record for CA4300997. PurityMap is independent of Nasa Ames Research Center.
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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 2025 to October 2025.
| 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 | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| 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 | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| 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 | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| 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 | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| 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 | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| 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 | 2025-01-13 to 2025-10-15 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| 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 | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-01-13 to 2025-07-16 | UCMR5 Analytical Results: NASA AMES RESEARCH CENTER (CA4300997) |
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 →According to EPA's record, Nasa Ames Research Center uses surface water bought from San Francisco Regional Water System.
No health-based violations on EPA record since 2016. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Nasa Ames Research Center's latest lead and copper round, which ended in December 2023, was 10.42 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Nasa Ames Research Center. Its mailing address on EPA record is NASA Ames Research Center, M/S 213-7 Building N213, Room 109C, MOFFETT FIELD, CA 94035-0001. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.