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PUBLIC WATER SYSTEM REPORT
Is ATASCADERO MUTUAL WATER CO Water Safe to Drink in 2026?
California · PWSID CA4010002 · Ground water
Population served
30,618
Cities served
—
State / jurisdiction
California (CA)
PWSID
CA4010002
D
TAP WATER GRADE
Poor
Model score 55/88 from violations, PFAS profile, and monitoring signals — not a laboratory test of your faucet.
3 violation record(s) in the latest EPA SDWA quarterly snapshotPFAS above EPA MCL (UCMR5 regulated compounds)
CONTAMINANTS — EPA UCMR5 MONITORING
Compound
Level (ppt)
EPA limit
Health guideline
Status
PFOSregulated
22.3
4 ppt
Exceeds
Above health advisory
PFBA
10.0
—
Within / n/a
Unregulated (monitored)
PFBS
9.4
—
Within / n/a
Unregulated (monitored)
PFOAregulated
8.4
4 ppt
Exceeds
Above health advisory
PFHxSregulated
7.6
10 ppt
Within / n/a
MCL exceedance
Source: EPA UCMR5 · ppt = parts per trillion · MCL = enforceable limit for regulated PFAS
Official Consumer Confidence Report (CCR)
📋 The official 2026 CCR for ATASCADERO MUTUAL WATER CO has not yet been published on WaterCheckup.
Are you the water operator for ATASCADERO MUTUAL WATER CO? Publish your official CCR here for free — your customers are already finding this page.
Residents: Your public water system is required by EPA to publish an annual CCR by July 1st each year. Contact ATASCADERO MUTUAL WATER COdirectly to request a copy, or check the EPA's national CCR portal at cfpub.epa.gov/ccr.
VIOLATIONS HISTORY (FEDERAL SNAPSHOT)
EPA’s national SDWA quarterly files associate 3 violation-related records with this system in the same reporting quarter as the public water system snapshot used on WaterCheckup. This is not a complete historical docket — see ECHO and SDWIS for full compliance context.
Based on ATASCADERO MUTUAL WATER CO's monitoring and violation profile, here are vetted filtration options — same picks framework as our city reports.
Certified Filter Recommendations
Matched to what's actually in your water
TOP PICKS FOR ATASCADERO MUTUAL WATER CO
⚠ EPA violations / contaminants in monitoring data
#1
Clearly Filtered 3.5L Pitcher
BEST FOR PFAS & LEAD
Clearly Filtered · ~$90
Only pitcher certified to remove PFAS at 99.9%. NSF 42/53/244/401/P473 — 365+ contaminants.
WHY THIS FOR ATASCADERO MUTUAL WATER CO · Chosen for ATASCADERO MUTUAL WATER CO because PFAS was detected at 22.3 ppt in UCMR5 — above the 4 ppt limit for some regulated compounds — and this system shows 3 violation record(s) in the latest federal snapshot. RO removes 99%+ of PFAS at the tap.
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