MADISON SERVICE DIST

MADISON, CA · ~876 people served

Check your exact address → MADISON overview

Excellent

PurityRadar safety score

PWSID

CA5700571

State

California

City

MADISON

Population served

876

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 85 Jun 18, 2026 · score 85

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2024. Official EPA record →

Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed

Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Unaddressed

Monitoring · Lead & Copper Rule began Mar 2024 Resolved

Monitoring & reporting · Nitrite began Jan 2020 Resolved

Monitoring & reporting · Nitrate began Jan 2020 Resolved

Monitoring · Lead & Copper Rule began Feb 2018 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Jan 2018 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Jan 2018 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2017 Resolved

Monitoring · Lead & Copper Rule began Jun 2017 Resolved

Monitoring & reporting · EPA contaminant 3028 began Jun 2017 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2016 Resolved

Recent enforcement actions

State action · SOX Aug 2024
State action · SFL May 2024
State action · SOX Mar 2022
State action · SFL Dec 2021
State action · SOX Jan 2020
State action · SOX Oct 2019
State action · SFL Nov 2018
State action · SOX Jul 2018

This profile is built from EPA public records for system CA5700571 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.