Water Quality: Helena, MT
38 water systems • 39,611 people served
Multiple Health ViolationsWater Quality Summary
Helena has 79 health-based violations on record, meaning one or more contaminants were found above EPA-established safe levels. Contaminants involved: Barium, Disinfection Byproducts, E. coli, Gross Alpha, TTHM, Total Haloacetic Acids (HAA5). In total, 775 violations are on record for 38 water systems serving 39,611 people.
Contaminants Found
Water Systems Serving Helena
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| HELENA WATER SYSTEM | MT0000241 | Surface Water | 32,091 | 18 |
| HELENA LEISURE LLC | MT0000590 | Groundwater | 1,200 | 132 |
| JEFFERSON HILLS WUA | MT0002978 | Groundwater | 780 | 24 |
| TEN MILE AND PLEASANT VALLEY WUA | MT0002005 | Groundwater | 750 | 109 |
| NORTH STAR PUD | MT0004264 | Groundwater | 715 | 15 |
| TREASURE STATE ACRES WUA | MT0002390 | Groundwater | 483 | 22 |
| NCMRWA NORTH SHELBY | MT0005064 | Groundwater | 300 | 18 |
| RANCHVIEW ESTATES WUA | MT0003782 | Groundwater | 250 | 7 |
| RYAN DAM WATER SYSTEM | MT0000046 | Groundwater | 230 | 18 |
| HOLMBERG VILLAGE ESTATES | MT0004190 | Groundwater | 225 | 2 |
| GLACIER POINT HO AND WUA | MT0004559 | Groundwater | 210 | 11 |
| NCMRWA TIBER SERVICE AREA | MT0004719 | Surface Water | 200 | 37 |
| TOWN VIEW ESTATES WUA INC | MT0002172 | Groundwater | 175 | 7 |
| MOUNTAIN HERITAGE WATER SYSTEM | MT0002873 | Groundwater | 175 | 27 |
| PRAIRIE MOBILE VILLAGE | MT0000600 | Groundwater | 163 | 6 |
| NCMRWA PONDERA CO SERVICE AREA | MT0004834 | Surface Water | 144 | 2 |
| BRYANT NO 3 SUBDIVISION | MT0004489 | Groundwater | 100 | 8 |
| SHADE TREE MOBILE PARK | MT0004685 | Surface Water | 100 | 4 |
| NORTH FORESTVALE HOMEOWNERS | MT0001793 | Groundwater | 98 | 12 |
| CAMEL MOUNTAIN HOA | MT0000572 | Groundwater | 96 | 4 |
| CAMELOT HOA | MT0000615 | Groundwater | 96 | 8 |
| PIEGAN BORDER STATION | MT0003334 | Surface Water | 94 | 39 |
| NCMRWA NORTH HAVRE CWD LEG | MT0004720 | Surface Water | 90 | 10 |
| APPLEGATE VILLAGE | MT0004144 | Groundwater | 85 | 8 |
| SOUTH FORESTVALE HOA | MT0003881 | Groundwater | 82 | 15 |
| MITCHELL COURT APARTMENTS | MT0005190 | Surface Water | 80 | 0 |
| RIVERS EDGE MOBILE HOME PARK GRT FLS | MT0004687 | Surface Water | 75 | 9 |
| BARNETT WATER USERS SYSTEM | MT0003183 | Groundwater | 70 | 21 |
| NCMRWA SHELBY TO ETHRIDGE | MT0004936 | Groundwater | 70 | 1 |
| BLUE CLOUD SUBDIVISION | MT0004288 | Groundwater | 60 | 41 |
| BIG STACK ESTATES | MT0004682 | Surface Water | 60 | 4 |
| BEACON TRAILER COURT HELENA | MT0000596 | Groundwater | 55 | 7 |
| GRAND VALLEY ESTATES SUBDIVISION | MT0004474 | Groundwater | 50 | 31 |
| MOONLIGHT ESTATES HOA | MT0004872 | Groundwater | 44 | 25 |
| TRAILS END TR PARK HELENA | MT0000605 | Groundwater | 35 | 58 |
| ROSEMARYS ADDITION | MT0002743 | Groundwater | 30 | 3 |
| WESTERN SKIES MOBILE CT | MT0000519 | Groundwater | 25 | 11 |
| NCMRWA ETHERIDGE TO CUTBANK | MT0004993 | Groundwater | 25 | 1 |
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.
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.