Water Quality: Gillette, WY
47 water systems • 45,958 people served
Multiple Health ViolationsWater Quality Summary
Gillette is served by 47 public water systems with a combined service population of 45,958 people, and has 1,070 EPA Safe Drinking Water Act violations on record. Critically, 41 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Gillette's violation count is 738% above the national average for Wyoming. Contaminants associated with violations include Chlorine Dioxide, Lead, Stage 2 DBP, Total Organic Carbon.
Contaminants Found
Can cause anemia in infants and young children; may cause nervous system effects at high levels.
Common source: Water treatment disinfectant used to control taste, odor, and microorganisms
EPA limit: 0.8 mg/L
Causes neurological damage, developmental delays in children, and kidney damage in adults even at low exposure levels.
Common source: Old plumbing pipes, lead solder, brass fixtures
EPA limit: Action Level: 0.015 mg/L (15 ppb)
Trihalomethanes and haloacetic acids that increase cancer risk and may cause adverse reproductive outcomes.
Common source: Chlorine disinfection reacting with natural organic matter in source water
EPA limit: TTHM: 0.080 mg/L; HAA5: 0.060 mg/L
Not a direct health risk but reacts with disinfectants to form carcinogenic byproducts such as trihalomethanes.
Common source: Decaying plant material, algae, soil organic matter in source water
EPA limit: Treatment technique (must reduce TOC based on source water level)
Water Systems Serving Gillette
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| GILLETTE, CITY OF | WY5600019 | Groundwater | 32,222 | 7 |
| SLEEPY HOLLOW SUBDIVISION | WY5600764 | Groundwater | 2,400 | 1 |
| ANTELOPE VALLEY I&S DISTRICT (AVISD) | WY5600251 | Groundwater | 1,280 | 2 |
| FOX PARK SUBDIVISION | WY5600745 | Groundwater | 843 | 1 |
| HERITAGE VILLAGE SUBDIVISION | WY5600249 | Groundwater | 750 | 2 |
| FOOTHILLS MOBILE HOME PARK | WY5601239 | Groundwater | 735 | 0 |
| EASTVIEW MANUFACTURED HOME COMMUNITY | WY5601353 | Groundwater | 688 | 5 |
| CRESTVIEW ESTATES SUBDIVISION | WY5600853 | Groundwater | 500 | 1 |
| PINE HAVEN, TOWN OF | WY5600191 | Groundwater | 498 | 6 |
| WESTVIEW MHC | WY5601593 | Groundwater | 416 | 1 |
| MEANS IMPROVEMENT & SERVICE DISTRICT | WY5600760 | Groundwater | 410 | 1 |
| NICKELSON FARMS WATER COMPANY | WY5600619 | Groundwater | 400 | 0 |
| FREEDOM HILLS SUBDIVISION | WY5600789 | Groundwater | 400 | 0 |
| COUNTRYSIDE WATER USERS, INC. | WY5600192 | Groundwater | 360 | 2 |
| HIGHVIEW MFG MOBILE HOME COMMUNITY (MHC) | WY5600120 | Groundwater | 304 | 3 |
| COOK ROAD WATER DISTRICT | WY5601399 | Groundwater | 291 | 0 |
| CEDAR HILLS WATER ASSOCIATION | WY5600780 | Groundwater | 258 | 11 |
| WRANGLER ESTATES | WY5601474 | Groundwater | 250 | 23 |
| AMERICAN ROAD W&S DISTRICT | WY5600968 | Groundwater | 220 | 0 |
| STONE GATE ESTATES | WY5601329 | Groundwater | 198 | 4 |
| FORCE ROAD JOINT POWERS BOARD | WY5600148 | Groundwater | 195 | 3 |
| PEOPLE`S IMPROVEMENT & SERVICE DISTRICT | WY5600898 | Groundwater | 176 | 1 |
| BALD MOUNTAIN TRAILER COURT | WY5600258 | Groundwater | 150 | 8 |
| SOUTHFORK ESTATES | WY5600832 | Groundwater | 144 | 3 |
| BENNOR ESTATES & IMPROVEMENT DISTRICT | WY5601596 | Groundwater | 144 | 13 |
| EAGLE RIDGE MHP, LLC | WY5600119 | Groundwater | 140 | 4 |
| GREEN VALLEY ESTATES I&S DISTRICT | WY5601245 | Groundwater | 140 | 0 |
| NORTH GURLEY MOBILE HOME PARK | WY5601721 | Groundwater | 128 | 8 |
| VISTA WEST IMPROVEMENT & SERV DISTRICT | WY5600246 | Groundwater | 120 | 3 |
| EIGHT MILE SUBDIVISION | WY5600829 | Groundwater | 120 | 1 |
| SECTION 4 WATER SYSTEM INCORPORATED | WY5601519 | Groundwater | 120 | 0 |
| HOY MOBILE HOME PARK | WY5600141 | Groundwater | 100 | 5 |
| PLAY PARK LLC | WY5600127 | Groundwater | 96 | 1 |
| ROZET RANCHETTES I&S DISTRICT | WY5601620 | Groundwater | 85 | 6 |
| WARD CREEK LANDOWNERS ASSOCIATION | WY5600850 | Groundwater | 77 | 235 |
| PINEVIEW I&S DISTRICT | WY5601490 | Groundwater | 75 | 3 |
| STROUP TRAILER COURT | WY5600145 | Groundwater | 74 | 2 |
| RODEO FLATS | WY5601626 | Groundwater | 72 | 0 |
| OVERBROOK SUBDIVISION | WY5601572 | Groundwater | 66 | 1 |
| RED HILLS SUBDIVISON | WY5601657 | Groundwater | 62 | 0 |
| MEADOW SPRINGS IMP & SERV | WY5601507 | Groundwater | 45 | 1 |
| RAFTER D IMPROVEMENT & SERVICE DISTRICT | WY5601609 | Groundwater | 40 | 0 |
| FOX RIDGE WATER SYSTEM | WY5601615 | Groundwater | 38 | 0 |
| LAKEVIEW MOBILE HOME PARK | WY5601449 | Groundwater | 36 | 12 |
| BUCKMILLER ENTERPRISES, LLC | WY5601695 | Groundwater | 33 | 1 |
| SOUTHSIDE WELL I&S DISTRICT | WY5600122 | Groundwater | 30 | 7 |
| HAGENS ESTATES | WY5601739 | Groundwater | 29 | 682 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Other Cities in Wyoming
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.