Modesto, CA
Contamination score
Higher = more contaminated vs. other cities.
Share this with friends & family you care about ❤️
Help someone you love know what's in their water — we'll email them Modesto's report. No sign-ups, no list.
Reported illness & cancer claims
No claims reported yet. Be the first to add one.
Claims are aggregated from public records and community reports and may be unverified. If you believe your illness is linked to local water, request a consultation.
Self-reported issues
No issues reported yet. Be the first to report one.
Pollution sources & reported claims near your water
Factories, greenhouses, and contaminated sites mapped around the water supply. Tap any circle for detail.
Get water alerts for Modesto, CA
We'll email you when a new violation, lawsuit, or health report appears for Modesto's water. Free, unsubscribe anytime.

Public water systems
Modesto, City Of
- PWSID:
- CA5010010
- Source:
- Surface water
- Serves:
- 218,771 people
City Of Modesto - South Turlock
- PWSID:
- CA5010023
- Source:
- Surface water
- Serves:
- 1,099 people
City Of Modesto - Del Rio
- PWSID:
- CA5010029
- Source:
- Ground water
- Serves:
- 1,327 people
City Of Modesto - Walnut Manor
- PWSID:
- CA5010031
- Source:
- Surface water
- Serves:
- 175 people
City Of Modesto - Grayson
- PWSID:
- CA5010033
- Source:
- Ground water
- Serves:
- 914 people
City Of Modesto - North Turlock
- PWSID:
- CA5010034
- Source:
- Surface water
- Serves:
- 172 people
City Of Modesto - Central Turlock
- PWSID:
- CA5010035
- Source:
- Surface water
- Serves:
- 119 people
City Of Modesto - Salida
- PWSID:
- CA5010005
- Source:
- Surface water
- Serves:
- 14,537 people
City Of Waterford
- PWSID:
- CA5010006
- Source:
- Ground water
- Serves:
- 8,788 people
Waterford - Hickman
- PWSID:
- CA5010026
- Source:
- Ground water
- Serves:
- 597 people
EPA & DEP violations
Modesto, City Of
PWSID CA50100102 violationsCity Of Modesto - Salida
PWSID CA50100054 violationsColiform (TCR) — MCL violation
high severityHealth-basedResolvedColiform (TCR) MCL violation (Resolved).
EPA SDWIS · MCL · Began Aug 1, 2015 · 11 years ago · Source ↗
Nitrate — MCL violation
high severityHealth-basedResolvedNitrate MCL violation (Resolved).
EPA SDWIS · MCL · Began Dec 1, 2012 · 13 years ago · Source ↗
Public Notice — Other violation
medium severityResolvedPublic Notice Other violation (Resolved).
EPA SDWIS · Other · Began Dec 1, 2012 · 13 years ago · Source ↗
Violation — Violation violation
medium severityContaminant Violation violation.
EPA SDWIS · Violation · Began — · Source ↗
City Of Waterford
PWSID CA50100061 violationColiform (TCR) — MCL violation
high severityHealth-basedResolvedColiform (TCR) MCL violation (Resolved).
EPA SDWIS · MCL · Began Dec 1, 2014 · 11 years ago · Source ↗
City-wide
1 violationColiform (TCR) — MCL violation
high severityHealth-basedResolvedColiform (TCR) MCL violation (Resolved).
EPA SDWIS · MCL · Began Jul 1, 2011 · 15 years ago · Source ↗
Water-related lawsuits
No lawsuits on record.
In the news & sources
No coverage linked yet.