Is ATASCADERO LAKE - INACTIVE Water Safe to Drink in 2026?
California · PWSID CA4000311 · Ground water
Population served
25
Cities served
—
State / jurisdiction
California (CA)
PWSID
CA4000311
C
TAP WATER GRADE
Concerning
Model score 63/88 from violations, PFAS profile, and monitoring signals — not a laboratory test of your faucet.
1 violation record(s) in the latest EPA SDWA quarterly snapshot
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CONTAMINANTS — EPA UCMR5 MONITORING
No UCMR5 PFAS detects on file for this PWS in our bundled national dataset — the system may be smaller than UCMR5 thresholds, had non-detects, or results are not yet linked to this ID. Your retailer Annual Water Quality Report lists other regulated contaminants (chlorine, DBPs, nitrates, etc.).
VIOLATIONS HISTORY (FEDERAL SNAPSHOT)
EPA’s national SDWA quarterly files associate 1 violation-related record with this system in the same reporting quarter as the utility snapshot used on WaterCheckup. This is not a complete historical docket — see ECHO and SDWIS for full compliance context.
WHY THIS FOR ATASCADERO LAKE - INACTIVE · Chosen for ATASCADERO LAKE - INACTIVE because EPA’s SDWA snapshot shows active violation records. RO addresses a wide range of regulated contaminants, not just chlorine taste.
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