State Hub
Wyoming Water Quality
95
Utilities in database
0.5M
Residents served
0
With open violations
30
PFAS monitored
Quick Answer
Wyoming public drinking water is served by 95 EPA-tracked water systems, providing service to approximately 0.5 million residents through public utilities. No open health-based violations are currently recorded across tracked systems in the EPA federal database. 30 systems have official PFAS monitoring records from the EPA UCMR 5 program (2023–2025). About 45% of WY residents use private wells, which fall outside federal utility compliance monitoring.
No open health-based violations are currently recorded in the EPA SDWIS database for Wyoming's tracked water systems. Always verify with your utility's Consumer Confidence Report for annual test results.
Drinking Water in Wyoming
Wyoming has 95 community water systems serving approximately 0.5 million residents. Primary water sources include groundwater. The most commonly reported contaminants include disinfection byproducts, lead. 45% of Wyoming residents rely on private wells. DEQ holds primary enforcement authority under the Safe Drinking Water Act.
Safest Large Utilities
Wyoming systems with no open health violations serving 10,000+ residents.
Utilities in Wyoming
51–75 of 95Pioneer Water & Sewer District
WY5600828 · 1,500 served
Rafter J Subdivision Hoa
WY5600822 · 1,500 served
Aspens Pines W&s District
WY5600220 · 1,400 served
Town of Alpine
WY5600156 · 1,300 served
Town of Ranchester
WY5600044 · 1,297 served
Antelope Valley I&s District (avisd)
WY5600251 · 1,280 served
City of Sundance
WY5600055 · 1,279 served
Town of Basin
WY5600004 · 1,250 served
Town of Mountain View
WY5600847 · 1,250 served
Bear River Regional Joint Powers
WY5601019 · 1,200 served
Town of Pine Bluffs
WY5600040 · 1,186 served
Town of Guernsey
WY5600023 · 1,157 served
Town of Upton
WY5600140 · 1,100 served
Winchester Hills
WY5600779 · 1,078 served
Burns Board of Public Utilities
WY5600188 · 1,024 served
Town of Moorcroft
WY5600037 · 1,009 served
Pioneer Mobile Home Park
WY5601173 · 1,000 served
Washakie Rural Water System
WY5601523 · 990 served
Clearview I&s District
WY5600091 · 930 served
Teton Village Water & Sewer District
WY5600218 · 906 served
South Big Horn County Jpb
WY5601454 · 900 served
Melody Ranch Improvement & Service Dist.
WY5601440 · 900 served
Town of Marbleton
WY5600223 · 861 served
Fox Park Subdivision
WY5600745 · 843 served
Town of Hanna
WY5600025 · 841 served
Key Contaminant Concerns in Wyoming
These contaminants appear most frequently in Wyoming utility records or pose elevated risk in this region based on EPA data.
Lead
Lead is a naturally occurring heavy metal that was widely used in plumbing infrastructure until it was banned for new installations in 1986. An estimated 9.2 million lead service lines still connect homes to public water mains across the United States, along with millions of homes with lead solder in their internal plumbing. Critically, a utility's water quality report can show zero detected lead at the treatment plant while your specific tap still delivers elevated lead — because the contamination happens inside the distribution system and your home's plumbing, not at the source.
EPA limit: 15 ppb (action level)
DBPs
When utilities add chlorine to water to kill pathogens, it reacts with dissolved organic matter — leaves, algae, soil — to produce disinfection byproducts (DBPs). Over 600 DBPs have been identified. The EPA regulates two groups: total trihalomethanes (TTHMs, including chloroform) and haloacetic acids (HAA5). DBP levels tend to be highest in surface water systems and in warm months when organic matter is elevated.
EPA limit: 80 µg/L (TTHMs) / 60 µg/L (HAA5)
City Water Reports in Wyoming
Tap water quality pages for Wyoming cities — violations, PFAS records, utility profiles, and official source links.
Independent Water Testing
Find a certified lab in Wyoming
Utility compliance records show what water systems report to the EPA. An independent test from a certified laboratory confirms what's actually in your tap water. Wyoming labs can test for PFAS, lead, nitrates, bacteria, and dozens of other contaminants.
Explore Water Quality in Wyoming
Pioneer Water & Sewer District
Violation history, PFAS records, and official source links
Rafter J Subdivision Hoa
Violation history, PFAS records, and official source links
Aspens Pines W&s District
Violation history, PFAS records, and official source links
PFAS monitoring records — Wyoming
30 water systems in Wyoming with EPA UCMR 5 records
Lead in Wyoming drinking water
State-specific lead data, violation utilities, and testing guidance
PFAS in Wyoming drinking water
State-specific PFAS data, MCL context, and treatment options
Certified water testing labs in Wyoming
Labs certified for PFAS (EPA 533/537.1), lead, and bacteria testing
Water treatment options
Reverse osmosis, activated carbon, and filtration guides with cost ranges
Data sources and methodology
How WaterUtilityReport.com sources and validates official EPA data
Common Questions About Wyoming Drinking Water
Does Wyoming drinking water have PFAS?
30 Wyoming water systems have EPA UCMR 5 PFAS monitoring records (2023–2025)
Which Wyoming water utilities have open violations?
Browse Wyoming utility compliance records and violation history
How do I test my water in Wyoming?
State-certified labs for PFAS (EPA 533/537.1), lead, nitrate, and bacteria testing
What treatment removes PFAS from WY tap water?
Reverse osmosis removes PFAS, lead, arsenic, and nitrates — cost, maintenance, and NSF certification explained
What do Wyoming PFAS records tell me about my water?
EPA limits, health context, and what UCMR 5 detection above MRL means for your water
How is Wyoming water quality data sourced here?
EPA SDWIS violations, UCMR 5 PFAS records, and CCR data — sources, accuracy notes, and limitations
Wyoming Water FAQs
Data sources: Utility compliance and violation data from EPA SDWIS (Safe Drinking Water Information System). PFAS monitoring records from EPA UCMR 5 (Unregulated Contaminant Monitoring Rule 5, 2023–2025). Contaminant data from EPA and ATSDR public references. This page summarizes public records — it is not a compliance determination. Methodology →
Last updated: 2026-04-24