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Not health advice. Contact your local water utility for concerns.
Data from EPA Water Quality Reports. For official information, contact your water utility or health department.
Side-by-side EPA records for the two public water systems · EPA SDWIS/ECHO 2026Q2 · UCMR5 (2023–2026, July 2026 release) · SYR4 six-year review 2012–2019 · methodology
No EPA system match
Not graded: we have not matched San Francisco to a live EPA public water system. Find its utility report →
CITY OF AUSTIN WATER & WASTEWATER · serves 1,115,323
| Metric | San Francisco | Austin |
|---|---|---|
| Grade / score | Not graded | C · 74/100 |
| Health-based EPA violations, last 5 yrs | no data | 1 |
| Health-based violations unresolved | no data | 0 |
| Monitoring / reporting violations, last 5 yrs | no data | 0 |
| Lead 90th percentile (action level 15 ppb) | no data | 0 ppb (2022–2024) |
| PFAS detected (UCMR5 2023–2026) | not sampled | PFBA, PFBS, PFHxA, PFHxS, PFOS, PFPeA — PFOA/PFOS ≥ 4 ppt |
| Primary water source | Not reported | Surface water |
| Population served | no data | 1,115,323 |
| EPA PWSID | no data | TX2270001 |
Green = the better value where the two systems differ. Lead and PFAS figures describe water leaving the plant, not any individual tap.
We can only grade Austin: San Francisco has not been matched to an EPA water system, so a fair comparison is not possible yet.
San Francisco is not yet matched to an EPA water system; check the utility's Consumer Confidence Report.
Austin grades C (74/100): 1 health-based EPA violation in the last five years, lead 90th percentile 0 ppb, PFAS detected (PFBA, PFBS, PFHxA, PFHxS, PFOS, PFPeA).