Casper, WY
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
Casper, City Of
- PWSID:
- WY5601415
- Source:
- Surface water
- Serves:
- 59,000 people
Hidden Hills MHP
- PWSID:
- WY5601339
- Source:
- Surface water
- Serves:
- 324 people
Natrona County Int'L Airport
- PWSID:
- WY5600079
- Source:
- Surface water
- Serves:
- 423 people
Terrace Ii Mhc
- PWSID:
- WY5601622
- Source:
- Surface water
- Serves:
- 320 people
Green Valley MHP
- PWSID:
- WY5600969
- Source:
- Surface water
- Serves:
- 265 people
Terrace I Mhc
- PWSID:
- WY5601231
- Source:
- Surface water
- Serves:
- 336 people
Vista West Water Company
- PWSID:
- WY5600069
- Source:
- Surface water
- Serves:
- 1,600 people
Sandy Lake Estates I&S District
- PWSID:
- WY5601581
- Source:
- Surface water
- Serves:
- 150 people
Riverside Mobile Home Court
- PWSID:
- WY5601641
- Source:
- Surface water
- Serves:
- 330 people
Broken Wrench Llc
- PWSID:
- WY5600074
- Source:
- Ground water
- Serves:
- 30 people
Central Wy Regional Water System Jpb
- PWSID:
- WY5600009
- Source:
- Surface water
- Serves:
- 25 people
EPA & DEP violations
City-wide
20 violationsSurface Water Treatment Rule — MR violation
medium severityResolvedSurface Water Treatment Rule MR violation (Resolved).
EPA SDWIS · MR · 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 ↗
Revised Total Coliform Rule — MON violation
medium severityResolvedRevised Total Coliform Rule MON violation (Resolved).
EPA SDWIS · MON · Began Oct 1, 2024 · 1 year ago · Source ↗
Surface Water Treatment Rule — MR violation
medium severityResolvedSurface Water Treatment Rule MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2024 · 1 year ago · Source ↗
Consumer Confidence Rule — Other violation
medium severityResolvedConsumer Confidence Rule Other violation (Resolved).
EPA SDWIS · Other · Began Jul 1, 2024 · 2 years ago · Source ↗
Surface Water Treatment Rule — MR violation
medium severityResolvedSurface Water Treatment Rule MR violation (Resolved).
EPA SDWIS · MR · Began Apr 1, 2024 · 2 years ago · Source ↗
Lead and Copper Rule — TT violation
high severityHealth-basedResolvedLead and Copper Rule TT violation (Resolved).
EPA SDWIS · TT · Began Feb 29, 2024 · 2 years ago · Source ↗
Total Haloacetic Acids (HAA5) — MR violation
medium severityResolvedTotal Haloacetic Acids (HAA5) MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2024 · 2 years ago · Source ↗
Lead and Copper Rule — TT violation
high severityHealth-basedResolvedLead and Copper Rule TT violation (Resolved).
EPA SDWIS · TT · Began Jan 1, 2024 · 2 years ago · Source ↗
TTHM — MR violation
medium severityResolvedTTHM MR violation (Resolved).
EPA SDWIS · MR · Began Jan 1, 2024 · 2 years ago · Source ↗
Lead and Copper Rule — MR violation
medium severityResolvedLead and Copper Rule MR violation (Resolved).
EPA SDWIS · MR · Began Oct 1, 2023 · 2 years ago · Source ↗
Lead and Copper Rule — TT violation
high severityHealth-basedResolvedLead and Copper Rule TT violation (Resolved).
EPA SDWIS · TT · Began Oct 1, 2023 · 2 years ago · Source ↗
Lead and Copper Rule — MR violation
medium severityResolvedLead and Copper Rule MR violation (Resolved).
EPA SDWIS · MR · Began Sep 29, 2023 · 2 years ago · Source ↗
Lead and Copper Rule — TT violation
high severityHealth-basedResolvedLead and Copper Rule TT violation (Resolved).
EPA SDWIS · TT · Began Jul 1, 2023 · 3 years ago · Source ↗
Lead and Copper Rule — MR violation
medium severityResolvedLead and Copper Rule MR violation (Resolved).
EPA SDWIS · MR · Began Jul 1, 2023 · 3 years ago · Source ↗
Lead and Copper Rule — TT violation
high severityHealth-basedResolvedLead and Copper Rule TT violation (Resolved).
EPA SDWIS · TT · Began Apr 1, 2023 · 3 years ago · Source ↗
Lead and Copper Rule — TT violation
high severityHealth-basedResolvedLead and Copper Rule TT violation (Resolved).
EPA SDWIS · TT · Began Apr 1, 2023 · 3 years ago · Source ↗
Lead and Copper Rule — TT violation
high severityHealth-basedResolvedLead and Copper Rule TT violation (Resolved).
EPA SDWIS · TT · Began Apr 1, 2023 · 3 years ago · Source ↗
Lead and Copper Rule — MR violation
medium severityResolvedLead and Copper Rule MR violation (Resolved).
EPA SDWIS · MR · Began Apr 1, 2023 · 3 years ago · Source ↗
Carbon tetrachloride — MR violation
medium severityArchivedCarbon tetrachloride MR violation (Archived).
EPA SDWIS · MR · Began Jan 1, 2023 · 3 years ago · Source ↗
Water-related lawsuits
No lawsuits on record.
In the news & sources
No coverage linked yet.