Duncan, AZ
Contamination score
Higher = more contaminated vs. other cities.
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Reported illness & cancer claims
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Self-reported issues
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Pollution sources & reported claims near your water
Factories, greenhouses, and contaminated sites mapped around the water supply. Tap any circle for detail.
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Public water systems
Duncan Town Of
- PWSID:
- AZ0406001
- Source:
- Ground water
- Serves:
- 605 people
Valley View Mhc & Rv Park
- PWSID:
- AZ0406305
- Source:
- Ground water
- Serves:
- 142 people
EPA & DEP violations
Duncan Town Of
PWSID AZ040600110 violationsDi(2-ethylhexyl) phthalate — MR violation
medium severityArchivedDi(2-ethylhexyl) phthalate MR violation (Archived).
EPA SDWIS · MR · Began Jan 1, 2026 · 7 months ago · Source ↗
Public Notice — Other violation
medium severityResolvedPublic Notice Other violation (Resolved).
EPA SDWIS · Other · Began Oct 2, 2025 · 10 months ago · Source ↗
Public Notice — Other violation
medium severityResolvedPublic Notice Other violation (Resolved).
EPA SDWIS · Other · Began Jul 2, 2025 · 1 year ago · Source ↗
Di(2-ethylhexyl) phthalate — MR violation
medium severityResolvedDi(2-ethylhexyl) phthalate MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2025 · 1 year ago · Source ↗
DICHLOROMETHANE — MR violation
medium severityResolvedDICHLOROMETHANE MR violation (Resolved).
EPA SDWIS · MR · Began Apr 1, 2025 · 1 year ago · Source ↗
o-Dichlorobenzene — MR violation
medium severityResolvedo-Dichlorobenzene MR violation (Resolved).
EPA SDWIS · MR · Began Apr 1, 2025 · 1 year ago · Source ↗
trans-1,2-Dichloroethylene — MR violation
medium severityResolvedtrans-1,2-Dichloroethylene MR violation (Resolved).
EPA SDWIS · MR · Began Apr 1, 2025 · 1 year ago · Source ↗
1,2-Dichloroethane — MR violation
medium severityResolved1,2-Dichloroethane MR violation (Resolved).
EPA SDWIS · MR · Began Apr 1, 2025 · 1 year ago · Source ↗
Carbon tetrachloride — MR violation
medium severityResolvedCarbon tetrachloride MR violation (Resolved).
EPA SDWIS · MR · Began Apr 1, 2025 · 1 year ago · Source ↗
1,2-Dichloropropane — MR violation
medium severityResolved1,2-Dichloropropane MR violation (Resolved).
EPA SDWIS · MR · Began Apr 1, 2025 · 1 year ago · Source ↗
City-wide
10 violationsRevised Total Coliform Rule — MON violation
medium severityArchivedRevised Total Coliform Rule MON violation (Archived).
EPA SDWIS · MON · Began Feb 1, 2026 · 6 months ago · Source ↗
Revised Total Coliform Rule — MON violation
medium severityArchivedRevised Total Coliform Rule MON violation (Archived).
EPA SDWIS · MON · Began Jan 1, 2026 · 7 months ago · Source ↗
Lead and Copper Rule — MR violation
medium severityResolvedLead and Copper Rule MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2026 · 7 months ago · Source ↗
Revised Total Coliform Rule — MON violation
medium severityArchivedRevised Total Coliform Rule MON violation (Archived).
EPA SDWIS · MON · Began Dec 1, 2025 · 8 months ago · Source ↗
Revised Total Coliform Rule — MON violation
medium severityResolvedRevised Total Coliform Rule MON violation (Resolved).
EPA SDWIS · MON · Began Nov 1, 2025 · 9 months ago · Source ↗
Consumer Confidence Rule — Other violation
medium severityUnaddressedConsumer Confidence Rule Other violation (Unaddressed).
EPA SDWIS · Other · Began Oct 2, 2025 · 10 months ago · Source ↗
Lead and Copper Rule — MR violation
medium severityResolvedLead and Copper Rule MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2025 · 10 months ago · Source ↗
Revised Total Coliform Rule — RPT violation
medium severityResolvedRevised Total Coliform Rule RPT violation (Resolved).
EPA SDWIS · RPT · Began Sep 1, 2025 · 11 months ago · Source ↗
Revised Total Coliform Rule — MON violation
medium severityResolvedRevised Total Coliform Rule MON violation (Resolved).
EPA SDWIS · MON · Began Aug 1, 2025 · 1 year ago · Source ↗
Consumer Confidence Rule — Other violation
medium severityUnaddressedConsumer Confidence Rule Other violation (Unaddressed).
EPA SDWIS · Other · Began Jul 1, 2025 · 1 year ago · Source ↗
Water-related lawsuits
No lawsuits on record.
In the news & sources
No coverage linked yet.