Is MID-PENINSULA WATER DISTRICT Water Safe to Drink in 2026?
California · PWSID CA4110001 · Surface water
Population served
30,609
Cities served
—
State / jurisdiction
California (CA)
PWSID
CA4110001
C
TAP WATER GRADE
Concerning
Model score 53/88 from violations, PFAS profile, and monitoring signals — not a laboratory test of your faucet.
6 violation record(s) in the latest EPA SDWA quarterly snapshot
Water operator? Publish your official 2027 CCR here — residents already find this page. Claim free →
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 6 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 MID-PENINSULA WATER DISTRICT's monitoring and violation profile, here are vetted filtration options — same picks framework as our city reports.
TOP PICKS FOR MID-PENINSULA WATER DISTRICT
⚠ EPA violations / contaminants in monitoring data
WHY THIS FOR MID-PENINSULA WATER DISTRICT · Chosen for MID-PENINSULA WATER DISTRICT because EPA’s SDWA snapshot shows active violation records. RO addresses a wide range of regulated contaminants, not just chlorine taste.
Get water quality alerts for MID-PENINSULA WATER DISTRICT
We'll notify you when new PFAS data, EPA violations, or contamination alerts affect MID-PENINSULA WATER DISTRICT (PWS CA4110001). One email, no spam, unsubscribe any time.