Modesto, CA
Contamination score
Higher = more contaminated vs. other cities.
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.

Public water systems
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
Modesto, City Of
- PWSID:
- CA5010010
- Source:
- Surface water
- Serves:
- 218,771 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
Coliform (TCR) — MCL violation
high severityHealth-basedResolvedColiform (TCR) MCL violation (Resolved).
EPA SDWIS · MCL · Began Aug 1, 2015 · 10 years ago · Source ↗
Coliform (TCR) — MCL violation
high severityHealth-basedResolvedColiform (TCR) MCL violation (Resolved).
EPA SDWIS · MCL · Began Dec 1, 2014 · 11 years ago · Source ↗
Nitrate — MCL violation
high severityHealth-basedResolvedNitrate MCL violation (Resolved).
EPA SDWIS · MCL · Began Aug 1, 2013 · 12 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 ↗
Coliform (TCR) — MCL violation
high severityHealth-basedResolvedColiform (TCR) MCL violation (Resolved).
EPA SDWIS · MCL · Began Jul 1, 2011 · 14 years ago · Source ↗
Violation — Violation violation
medium severityContaminant Violation violation.
EPA SDWIS · Violation · Began — · Source ↗
Violation — Violation violation
medium severityContaminant Violation violation.
EPA SDWIS · Violation · Began — · Source ↗
Water-related lawsuits
No lawsuits on record.
In the news & sources
No coverage linked yet.