PlainEnviro

Missoula Water Quality

Montana

Health Violations

According to EPA SDWIS, Missoula, Montana is served by 75 community water systems covering about 79,904 people. The same extract lists 48 health-based violation records, most recently coded 8000 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.

75
Water Systems
79,904
Population Served
48
Health-Based Violation Records
4
Distinct Contaminant Codes

Drinking water in Missoula, Montana is delivered through 75 EPA-regulated community water systems serving an estimated 79,904 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.

PlainEnviro's health-based SDWIS extract shows 48 violation records across the 75 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 4 distinct EPA contaminant codes: Revised Total Coliform Rule, Groundwater Rule, Lead and Copper Rule, Surface Water Treatment Rule. 4 TRI-reporting industrial facilities are also located within the city limits.

A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Montana drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.

Community Water Systems

System Name Pop. Served Violations Status
MISSOULA WATER 68,200 0 Clean
EL MAR ESTATES MSLA CO WATER 1,350 0 Clean
WESTVIEW MOBILE HOME PARK 947 1 Health
PHANTOM HILLS WATER SYSTEM 810 0 Clean
TRAVOIS VILLAGE MOBILE PARK 702 0 Clean
GREENFIELD MOBILE HOME PARK 620 0 Clean
WYE AREA WATER SYSTEM 512 0 Clean
GRANT CREEK WATER USERS ASSOCIATION INC 380 0 Clean
KATOONAH LODGES 258 0 Clean
HOLLYWOOD HEIGHTS TRAILER PARK LLC 220 0 Clean
CIRCLE H WATER INC 215 0 Clean
WAGON WHEEL TRAILER VILLAGE 210 0 Clean
GOODAN KEIL CO WATER DIST 207 2 Health
MISSION MEADOWS RV CAMPSITE PARK, INC 200 0 Clean
HIGH QUALITY H2O 200 4 Health
BAIR CLARK PROPERTIES, LLC 180 1 Health
MOBILE CITY TRAILER COURT 175 0 Clean
HAWTHORN SPRINGS PROPERTY OWNERS ASSOC 165 0 Clean
GREENLAND MOBILE HOME PARK 163 0 Clean
SPRING MEADOWS COUNTY WATER DISTRICT 162 1 Health
SHELBY ADDITION WATER DISTRICT 145 0 Clean
OLD HELLGATE VILLAGE MSLA 140 0 Clean
C AND D HOA 140 0 Clean
MAGNOLIA ESTATES 140 0 Clean
TWO RIVERS MOBILE HM PK LOLO 138 0 Clean
SUNNY MEADOWS WATER AND SEWER DIST 135 1 Health
FOREST INN LOUNGE AND APARTMENTS 130 0 Clean
BONNER HOUSING PWS SYSTEM 128 0 Clean
WEST MOUNTAIN ESTATES 125 0 Clean
MEADOW BROOK PARK 120 0 Clean
RIVERWALK AND DINOS ESTATES 115 0 Clean
LEWIS AND CLARK TRAILER COURT 110 0 Clean
TRESTLE CREEK I AND II 110 0 Clean
BEE HIVE HOMES MSLA 106 19 Health
SUNSET WEST RSID 105 0 Clean
MILLTOWN WATERS USERS ASSOCIATION 105 0 Clean
HARVEYS MOBILE HOME PARK 98 0 Clean
BUENA VISTA COMMUNITY, INC 90 0 Clean
RIVER ACRES INC 78 1 Health
BIG PINES TRAILER COURT 78 0 Clean
TAMARACK COURT 75 11 Health
BLUE MOUNTAIN TRAILER CT 75 0 Clean
MONTANA TRAILER COURT 73 0 Clean
TURAH MEADOWS 73 0 Clean
MISSOULA VILLAGE WEST TR CT 68 1 Health
GLESSNER TRAILER COURT 67 0 Clean
HIDDEN HEIGHTS HOA 65 0 Clean
BONNIE'S PLACE, INC 60 0 Clean
CIRCLE J TRAILER COURT 59 0 Clean
HAPPY VALLEY MHP 55 0 Clean
MOUNTAIN SHADOWS ESTATES STEVENSVILLE 55 1 Health
SUNSET PINES 55 0 Clean
NEW CASTLE COURT 55 0 Clean
GREENWOOD TRAILER COURT 53 2 Health
HAMILTON MOBILE VILLAGE 53 0 Clean
FRENCHTOWN VALLEY VIEW TR CT 50 0 Clean
CAROLS TRAILER COURT 50 0 Clean
AMITY SQUARE WATER SYSTEM 50 0 Clean
GROVE THE 50 0 Clean
BIRCHWOOD DUPLEXES 43 0 Clean
MOUNTAIN VIEW TRAILER COURT 42 0 Clean
OLD MILL PENINSULA HOA 40 0 Clean
HUNTERS TRAILER CT ANACONDA 38 0 Clean
COUNTRYSIDE COURT MISSOULA 37 0 Clean
BRANCO COURT 37 0 Clean
RENAE COURT SUBDIVISION 36 0 Clean
2727 WEST CENTRAL DUPLEXES 35 0 Clean
JUNIPER TRAILER COURT MSLA 35 0 Clean
CATLIN STREET MOBILE COURT 35 0 Clean
NORTH DAVIS DUPLEXES 421 33 0 Clean
PETERS - PRISKE APARTMENTS MISSOULA 33 0 Clean
CANYON PINES HOA 32 0 Clean
EAST VIEW ACRES WATER SYSTEM 25 3 Health
B & M ZOO SUBDIVISION 25 0 Clean
WOODY MOUNTAIN RESIDENTIAL COMMUNITY 25 0 Clean

Does this city have health-based water violations?

These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.

Water system Contaminant Begin Date
MOUNTAIN SHADOWS ESTATES STEVENSVILLE Revised Total Coliform Rule 2025-12-13
TAMARACK COURT Groundwater Rule 2024-10-01
TAMARACK COURT Groundwater Rule 2024-10-01
TAMARACK COURT Groundwater Rule 2024-07-01
TAMARACK COURT Groundwater Rule 2024-07-01
TAMARACK COURT Groundwater Rule 2024-07-01
TAMARACK COURT Groundwater Rule 2024-03-01
TAMARACK COURT Groundwater Rule 2024-03-01
TAMARACK COURT Groundwater Rule 2024-03-01
BEE HIVE HOMES MSLA Groundwater Rule 2023-01-01
BEE HIVE HOMES MSLA Groundwater Rule 2023-01-01
BEE HIVE HOMES MSLA Groundwater Rule 2023-01-01
BEE HIVE HOMES MSLA Groundwater Rule 2022-11-01
BEE HIVE HOMES MSLA Groundwater Rule 2022-11-01
BEE HIVE HOMES MSLA Groundwater Rule 2022-11-01
HIGH QUALITY H2O Groundwater Rule 2022-10-04
HIGH QUALITY H2O Groundwater Rule 2022-10-04
GREENWOOD TRAILER COURT Revised Total Coliform Rule 2022-09-27
GREENWOOD TRAILER COURT Revised Total Coliform Rule 2022-09-27
BEE HIVE HOMES MSLA Groundwater Rule 2022-09-01
BEE HIVE HOMES MSLA Groundwater Rule 2022-09-01
BEE HIVE HOMES MSLA Groundwater Rule 2022-09-01
HIGH QUALITY H2O Revised Total Coliform Rule 2022-02-01
HIGH QUALITY H2O Groundwater Rule 2021-07-10
BEE HIVE HOMES MSLA Groundwater Rule 2021-02-01
BEE HIVE HOMES MSLA Groundwater Rule 2021-02-01
BEE HIVE HOMES MSLA Groundwater Rule 2020-11-01
BEE HIVE HOMES MSLA Groundwater Rule 2020-11-01
TAMARACK COURT Groundwater Rule 2020-07-01
TAMARACK COURT Groundwater Rule 2020-02-01
GOODAN KEIL CO WATER DIST Revised Total Coliform Rule 2019-10-05
GOODAN KEIL CO WATER DIST Revised Total Coliform Rule 2019-10-05
BEE HIVE HOMES MSLA Groundwater Rule 2019-07-01
BEE HIVE HOMES MSLA Groundwater Rule 2019-07-01
BEE HIVE HOMES MSLA Groundwater Rule 2019-06-01
BEE HIVE HOMES MSLA Groundwater Rule 2019-06-01
BEE HIVE HOMES MSLA Revised Total Coliform Rule 2019-04-01
BEE HIVE HOMES MSLA Revised Total Coliform Rule 2019-04-01
SUNNY MEADOWS WATER AND SEWER DIST Revised Total Coliform Rule 2018-11-30
SPRING MEADOWS COUNTY WATER DISTRICT Lead and Copper Rule 2018-08-31
MISSOULA VILLAGE WEST TR CT Revised Total Coliform Rule 2018-03-21
RIVER ACRES INC Revised Total Coliform Rule 2017-05-01
EAST VIEW ACRES WATER SYSTEM Groundwater Rule 2016-02-29
EAST VIEW ACRES WATER SYSTEM Groundwater Rule 2016-02-29
TAMARACK COURT Groundwater Rule 2015-11-01
EAST VIEW ACRES WATER SYSTEM Groundwater Rule 2015-06-01
BAIR CLARK PROPERTIES, LLC Surface Water Treatment Rule 2014-10-23
WESTVIEW MOBILE HOME PARK Lead and Copper Rule 1998-01-01

What are Missoula's health-based records for?

Missoula's health-based violation records carry 4 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.

Contaminant Records Systems
Groundwater Rule 34 4
Revised Total Coliform Rule 11 8
Lead and Copper Rule 2 2
Surface Water Treatment Rule 1 1

TRI Facilities in Missoula

Facility Total Releases
Roseburg Forest Products Co. - Missoula Particleboard 489.3K lbs
Hexion Inc. 89.5K lbs
Phillips 66 Missoula Products Terminal 19.6K lbs
Jtl Group Missoula (dba Knife River-Missoula) 618 lbs

Frequently Asked Questions

What does EPA SDWIS list for drinking water in Missoula, Montana? ▼
Missoula is listed with 75 EPA-regulated water systems covering approximately 79,904 people. 48 health-based violation records appear in the extract. A past registry row is not a current drinkability verdict; contact the local utility for current status.
How many water violations does Missoula have in this EPA extract? ▼
Missoula water systems have 48 health-based violation records in PlainEnviro's EPA SDWIS extract. This extract is filtered to EPA health-based records and does not include monitoring or reporting violations.
What contaminants were found in Missoula water? ▼
Health-based records for Missoula water systems carry the following EPA contaminant codes: Revised Total Coliform Rule, Groundwater Rule, Lead and Copper Rule, Surface Water Treatment Rule. This source edition does not include authoritative contaminant names. Source: EPA SDWIS.
How many water systems serve Missoula? ▼
75 EPA-regulated community water systems serve Missoula, Montana, collectively covering approximately 79,904 people. Data is from the EPA Safe Drinking Water Information System (SDWIS).
Where does Missoula get its drinking water? ▼
Missoula's water supply comes from 75 EPA-regulated community water systems. Source type data is not available for all systems. For detailed supply information, contact your local water utility. Source: EPA SDWIS.
Are there pollution sources near Missoula? ▼
Yes, 4 EPA Toxic Release Inventory (TRI) facilities are registered in Missoula, Montana, reporting a combined 599.0K lbs of toxic chemical releases. TRI data reflects self-reported emissions; it does not measure exposure or health effects. Source: EPA TRI.

How does Missoula compare in Montana?

Of the 217 Montana places with at least one community water system on file, Missoula ranks #1 by number of systems (75).

Either side of it: Kalispell (71), Helena (40)

About This Data

Figures here are the current EPA SDWIS extract joined to the 75 community water systems whose service area lists Missoula, ranked against the 217 Montana places with at least one system on file. Data current as of 2026-08-25.

Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.

A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.

TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.

Read our methodology - how this data is sourced, computed, and verified.

Related

Browse all → | Rankings →
Data sourced from U.S. EPA environmental datasets. See our methodology for details. Retrieved and formatted by PlainEnviro