City of Riverton
EPA ID: WY5600047 · 10,330 people served · 1 ZIP code
Five-year compliance data for City of Riverton includes 11 violations the EPA has not yet marked resolved — those open findings are part of the utility's current enforcement profile, covering a service population of approximately 10,330 residents across the area it supplies.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Worsening · Risk tier: High · 95% chance of violation in next 12 months
Violations went from 1 (2021) to 2 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for City of Riverton Source: EPA SDWIS service area boundaries.
Service area boundary — Grade D
Service Area Demographics
The City of Riverton serves a community with a median household income of $62,456 and an estimated 18,946 residents across its service area. Approximately 65% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
City of Riverton's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
About 2% of homes in Fremont County, Wyoming rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
Detected Contaminants
How City of Riverton compares to EPA limits
What This Means For You
Surface Water Treatment Rule at 7 mg/L exceeds the EPA maximum of mg/L.
Contaminant 0700 at 5 mg/L exceeds the EPA maximum of mg/L.
Stage 1 DBP Rule at 4 mg/L exceeds the EPA maximum of mg/L.
Revised Total Coliform Rule at 3 presence exceeds the EPA maximum of presence.
Contaminant 0800 at 2 mg/L exceeds the EPA maximum of mg/L.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 8 detections recorded. 2 exceed federal EPA limits (4 ppt for PFOA/PFOS).
Comparable Water Systems
Similar-sized systems in Wyoming
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
City of Riverton, (EPA ID: WY5600047) is a community water system in Wyoming that serves approximately 10,330 people from surface water sources.
This system serves ZIP code 82501 in Riverton.
Average Home Safety Score: D (54/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| July 1, 2025 | Surface Water Treatment Rule | Monitoring | Unresolved |
| May 7, 2025 | Contaminant 0700 | Health-based | Unresolved |
| December 1, 2024 | Revised Total Coliform Rule | Monitoring | Resolved |
| October 2, 2024 | Surface Water Treatment Rule | Monitoring | Unresolved |
| September 1, 2024 | Revised Total Coliform Rule | Monitoring | Unresolved |
| August 7, 2024 | Contaminant 0700 | Health-based | Unresolved |
| July 17, 2024 | Total Coliform | Monitoring | Resolved |
| January 1, 2024 | Barium | Monitoring | Resolved |
| December 30, 2023 | Stage 1 DBP Rule | Monitoring | Resolved |
| October 1, 2023 | Surface Water Treatment Rule | Monitoring | Unresolved |
| July 23, 2023 | Contaminant 0700 | Health-based | Resolved |
| July 1, 2023 | Revised Total Coliform Rule | Monitoring | Resolved |
| June 1, 2023 | Contaminant 0800 | Health-based | Resolved |
| February 1, 2023 | Consumer Confidence Report Rule | Monitoring | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Surface Water Treatment Rule | Treatment Failure | 7 | No |
| Contaminant 0700 | Other Violation | 5 | Yes |
| Stage 1 DBP Rule | Treatment Failure | 4 | No |
| Revised Total Coliform Rule | Microbiological | 3 | No |
| Contaminant 0800 | Other Violation | 2 | Yes |
| Barium | Inorganic | 1 | No |
| Total Organic Carbon | Disinfection Byproducts | 1 | No |
| Total Coliform | Microbiological | 1 | No |
| Radium-228 | Radionuclides | 1 | No |
| Consumer Confidence Report Rule | Reporting Failure | 1 | No |
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 82501 | 0.004 mg/L | No | N/A |
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by WY or modeled from parcel and building-footprint data.
- 82501 — Riverton
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for City of Riverton (WY5600047) on EPA.gov.
Frequently Asked Questions
Is City of Riverton water safe to drink?
City of Riverton has recorded 7 health-based violations in the past 5 years. While the system is required to treat water to meet federal standards, you may want to consider additional precautions such as a certified water filter.
How many people does City of Riverton serve?
City of Riverton serves approximately 10,330 people across 1 ZIP code in Wyoming.
Where does City of Riverton get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: Above Current MCL
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). One or more PFAS compounds were measured above the current state-enforceable MCL.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.
Frequently Asked Questions
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
City of Riverton (EPA ID: WY5600047) — request the latest Consumer Confidence Report or ask about specific contaminants.