Casa Grande, AZ
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
ARIZONA WATER CO - PINAL VALLEY
- PWSID:
- AZ0411009
- Source:
- Ground water
- Serves:
- 134,432 people
ARIZONA WATER CO - STANFIELD
- PWSID:
- AZ0411012
- Source:
- Ground water
- Serves:
- 639 people
AWC - CASA GRANDE WEST WATER COMPANY
- PWSID:
- AZ0411024
- Source:
- Ground water
- Serves:
- 943 people
ARIZONA WATER CO - TIERRA GRANDE
- PWSID:
- AZ0411076
- Source:
- Ground water
- Serves:
- 1,796 people
Sierra Vista Rv Park
- PWSID:
- AZ0411383
- Source:
- Ground water
- Serves:
- 200 people
Gw Santa Cruz Water - Cp Water Co
- PWSID:
- AZ0411151
- Source:
- Ground water
- Serves:
- 37 people
Picacho Water Company
- PWSID:
- AZ0411135
- Source:
- Ground water
- Serves:
- 2,440 people
AWC - CASA GRANDE SOUTH WATER COMPANY
- PWSID:
- AZ0411061
- Source:
- Ground water
- Serves:
- 176 people
EPA & DEP violations
Public Notice — Other violation
medium severityResolvedPublic Notice Other violation (Resolved).
EPA SDWIS · Other · Began Nov 19, 2025 · 6 months ago · Source ↗
Lead and Copper Rule — MR violation
medium severityUnaddressedLead and Copper Rule MR violation (Unaddressed).
EPA SDWIS · MR · Began Oct 1, 2025 · 8 months ago · Source ↗
E. COLI — MR violation
medium severityResolvedE. COLI MR violation (Resolved).
EPA SDWIS · MR · Began Aug 20, 2025 · 9 months ago · Source ↗
Arsenic — MR violation
medium severityResolvedArsenic MR violation (Resolved).
EPA SDWIS · MR · Began Apr 1, 2025 · 1 year ago · Source ↗
LEAD AND COPPER RULE REVISIONS — TT violation
high severityHealth-basedResolvedLEAD AND COPPER RULE REVISIONS TT violation (Resolved).
EPA SDWIS · TT · Began Oct 17, 2024 · 1 year ago · Source ↗
LEAD AND COPPER RULE REVISIONS — RPT violation
medium severityResolvedLEAD AND COPPER RULE REVISIONS RPT violation (Resolved).
EPA SDWIS · RPT · Began Oct 17, 2024 · 1 year ago · Source ↗
LEAD AND COPPER RULE REVISIONS — RPT violation
medium severityResolvedLEAD AND COPPER RULE REVISIONS RPT violation (Resolved).
EPA SDWIS · RPT · Began Oct 17, 2024 · 1 year ago · Source ↗
LEAD AND COPPER RULE REVISIONS — TT violation
high severityHealth-basedResolvedLEAD AND COPPER RULE REVISIONS TT violation (Resolved).
EPA SDWIS · TT · Began Oct 17, 2024 · 1 year ago · Source ↗
LEAD AND COPPER RULE REVISIONS — RPT violation
medium severityResolvedLEAD AND COPPER RULE REVISIONS RPT violation (Resolved).
EPA SDWIS · RPT · Began Oct 17, 2024 · 1 year ago · Source ↗
LEAD AND COPPER RULE REVISIONS — TT violation
high severityHealth-basedResolvedLEAD AND COPPER RULE REVISIONS TT violation (Resolved).
EPA SDWIS · TT · Began Oct 17, 2024 · 1 year ago · Source ↗
Total Haloacetic Acids (HAA5) — MR violation
medium severityResolvedTotal Haloacetic Acids (HAA5) MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2024 · 1 year ago · Source ↗
TTHM — MR violation
medium severityResolvedTTHM MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2024 · 1 year ago · Source ↗
Arsenic — MCL violation
high severityHealth-basedResolvedArsenic MCL violation (Resolved).
EPA SDWIS · MCL · Began Apr 1, 2024 · 2 years ago · Source ↗
Public Notice — Other violation
medium severityResolvedPublic Notice Other violation (Resolved).
EPA SDWIS · Other · Began Mar 31, 2024 · 2 years ago · Source ↗
Arsenic — MCL violation
high severityHealth-basedResolvedArsenic MCL violation (Resolved).
EPA SDWIS · MCL · Began Jan 1, 2024 · 2 years ago · Source ↗
E. COLI — MR violation
medium severityResolvedE. COLI MR violation (Resolved).
EPA SDWIS · MR · Began Nov 23, 2023 · 2 years ago · Source ↗
Arsenic — MCL violation
high severityHealth-basedResolvedArsenic MCL violation (Resolved).
EPA SDWIS · MCL · Began Oct 1, 2023 · 2 years ago · Source ↗
Revised Total Coliform Rule — RPT violation
medium severityResolvedRevised Total Coliform Rule RPT violation (Resolved).
EPA SDWIS · RPT · Began Sep 1, 2023 · 2 years ago · Source ↗
Arsenic — MCL violation
high severityHealth-basedResolvedArsenic MCL violation (Resolved).
EPA SDWIS · MCL · Began Jul 1, 2023 · 2 years ago · Source ↗
Arsenic — MCL violation
high severityHealth-basedResolvedArsenic MCL violation (Resolved).
EPA SDWIS · MCL · Began Apr 1, 2023 · 3 years ago · Source ↗
Water-related lawsuits
No lawsuits on record.
In the news & sources
No coverage linked yet.