Is CAL-WATER SERVICE CO.-CHICO Water Safe to Drink in 2026?
California · PWSID CA0410002 · Ground water
Population served
114,925
Cities served
—
State / jurisdiction
California (CA)
PWSID
CA0410002
F
TAP WATER GRADE
High risk
Model score 0/88 from violations, PFAS profile, and monitoring signals — not a laboratory test of your faucet.
17 violation record(s) in the latest EPA SDWA quarterly snapshotPFAS above EPA MCL (UCMR5 regulated compounds)
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CONTAMINANTS — EPA UCMR5 MONITORING
Compound
Level (ppt)
EPA limit
Health guideline
Status
PFOSregulated
22.5
4 ppt
Exceeds
Above health advisory
PFHxSregulated
22.1
10 ppt
Exceeds
Above health advisory
PFBS
9.6
—
Within / n/a
Unregulated (monitored)
PFOAregulated
6.8
4 ppt
Exceeds
Above health advisory
PFHxA
6.0
—
Within / n/a
Unregulated (monitored)
PFPeA
5.3
—
Within / n/a
Unregulated (monitored)
Source: EPA UCMR5 · ppt = parts per trillion · MCL = enforceable limit for regulated PFAS
VIOLATIONS HISTORY (FEDERAL SNAPSHOT)
EPA’s national SDWA quarterly files associate 17 violation-related records 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.
Based on CAL-WATER SERVICE CO.-CHICO's monitoring and violation profile, here are vetted filtration options — same picks framework as our city reports.
TOP PICKS FOR CAL-WATER SERVICE CO.-CHICO
⚠ EPA violations / contaminants in monitoring data
WHY THIS FOR CAL-WATER SERVICE CO.-CHICO · Chosen for CAL-WATER SERVICE CO.-CHICO because PFAS was detected at 22.5 ppt in UCMR5 — above the 4 ppt limit for some regulated compounds — and this system shows 17 violation record(s) in the latest federal snapshot. RO removes 99%+ of PFAS at the tap.
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