County · Montana
Flathead County, Montana: drinking water records
Explore EPA records for 142 community water systems across 14 ZIP codes in Flathead County, then find water-testing resources and available recent monitoring-station readings.
Data as of EPA UCMR 5 final release, August 2026 (file dated Aug 28, 2026) · EPA SDWIS 2026Q2 (file dated Jul 9, 2026). How we build these pages
Drinking-water records
EPA survey and compliance records are historical reports. UCMR 5 results are available for 6 of the 142 listed systems in this snapshot. A system with no reported PFAS detection is not a test of every tap or every contaminant.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems in this county
All 142 active community systems in the available county records, sorted by record completeness. Scroll the table to explore more systems.
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Kalispell Public Works MT0000259 | 25,000 | 480 | 2 | 0 | 2 ppbbelow the action level |
| Whitefish City of MT0000357 | 10,418 | 120 | 0 | 0 | 2 ppbbelow the action level |
| Flathead County Water and Sewer MT0001744 | 7,775 | 240 | 0 | 0 | 1 ppbbelow the action level |
| Bigfork County Water and Sewer MT0000262 | 6,100 | 120 | 0 | 0 | 1 ppbbelow the action level |
| Columbia Falls City of MT0000181 | 4,450 | 60 | 0 | 0 | 4 ppbbelow the action level |
| Hilltop Terrace Subdivision MT0001922 | 230 | 0 | 0 | 1 | 7 ppbbelow the action level |
| Alpine Village Wua MT0003229 | 125 | 60 | 1 | 0 | 66 ppbat or above the action level |
| Wettington Water District INC MT0004083 | 119 | 0 | 0 | 1 | 1 ppbbelow the action level |
| Pleasant Hill Estates HOA MT0000088 | 90 | 0 | 0 | 1 | 2 ppbbelow the action level |
| Pleasant View Homesites W and S District MT0000086 | 85 | 0 | 0 | 1 | 0 ppbbelow the action level |
| Skyview Park MT0002516 | 55 | 0 | 0 | 1 | 2 ppbbelow the action level |
| Ap Kookoosint MT0004929 | 40 | 0 | 0 | 2 | 1 ppbbelow the action level |
| Swan Ridge HOA MT0004770 | 28 | 0 | 0 | 1 | 1 ppbbelow the action level |
| Big Mountain Water Company MT0000060 | 2,435 | 0 | 0 | 0 | 7 ppbbelow the action level |
| Lakeside Water System MT0000266 | 1,225 | 0 | 0 | 0 | 3 ppbbelow the action level |
| Hungry Horse Co Water and Sewer District MT0000253 | 1,135 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Meadow Lake Co Water and Sewer District MT0000914 | 950 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Somers Co Water and Sewer Dist MT0000332 | 765 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Ptarmigan Village INC MT0000133 | 600 | 0 | 0 | 0 | 3 ppbbelow the action level |
| Headquarters Apgar MT0003176 | 500 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Country Estates Water Supply MT0002846 | 490 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Flathead Co Water District No 8 MT0000261 | 475 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Coram County Water and Sewer District MT0000189 | 450 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Greenacres County Water and Sewer Dist MT0001923 | 450 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Meadow Manor MT0004397 | 410 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Forest Acres Tr Pk Whitefish MT0000064 | 390 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Cherry View MT0004856 | 352 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Martin City County Water District MT0000286 | 340 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Iron Horse Homeowners Assoc MT0004052 | 335 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Southside Public Water Supply MT0002652 | 306 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Mountain Villa Apts Kalispell MT0002640 | 300 | 0 | 0 | 0 | 9 ppbbelow the action level |
| Northern Pines Community HOA MT0004193 | 295 | 0 | 0 | 0 | 8 ppbbelow the action level |
| Ap Williams MT0001671 | 280 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Ridgewood Terrace MHP MT0004186 | 280 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Rocky Mountain Hi RV Park MT0002812 | 275 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Alpine Pacific Utilities MT0004700 | 270 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Country Lake Homes Whitefish MT0003031 | 260 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Ponderosa Homeowners Assn INC MT0002863 | 246 | 0 | 0 | 0 | 4 ppbbelow the action level |
| Green Tree Meadows County W and S Dist MT0003194 | 237 | 0 | 0 | 0 | 6 ppbbelow the action level |
| Kokanee Bend HOA MT0002997 | 230 | 0 | 0 | 0 | 3 ppbbelow the action level |
| Flathead County Water Dist 101 MT0000184 | 210 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Happy Valley Water Dist B Kspl MT0001984 | 207 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Lion Mountain Homeowners Assoc MT0000392 | 204 | 0 | 0 | 0 | 14 ppbbelow the action level |
| Greenwood Village RV and MHP MT0003602 | 195 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Tamarack Woods HOA Lakeside MT0003393 | 180 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Fox Hill Estates MT0004458 | 163 | 0 | 0 | 0 | 1 ppbbelow the action level |
| East Evergreen Mobile Manor MT0004753 | 155 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Meadowland HOA MT0001670 | 150 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Youth With a Mission MT0003262 | 150 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Quail Ridge MT0004283 | 148 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Rocky Cliff Estates MT0004459 | 140 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Northwoods Water System Coop INC MT0001736 | 135 | 0 | 0 | 0 | 3 ppbbelow the action level |
| Sunrise Terrace Subd No 2 MT0003040 | 131 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Meadow Hills Water and Sewer District MT0002925 | 130 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Stillwater Estates County W and S Dist MT0004221 | 130 | 0 | 0 | 0 | 4 ppbbelow the action level |
| West Valley Pines HOA INC MT0003414 | 130 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Two Mile Tract HOA MT0003328 | 128 | 0 | 0 | 0 | 4 ppbbelow the action level |
| Country Estates Mble Home Park MT0001892 | 125 | 0 | 0 | 0 | 0 ppbbelow the action level |
| The Benches MT0005069 | 123 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Holbrook Estates MT0005154 | 120 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Eagle Ridge Estates Co W and S Dist MT0004475 | 115 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Montana Christian College MT0004270 | 105 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Bear Creek Village Bigfork MT0000126 | 100 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Lakeshore Heights HOA MT0001743 | 100 | 0 | 0 | 0 | 4 ppbbelow the action level |
| Riverside Mobile Home Park MT0000108 | 100 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Thompson Ranchettes II MT0002893 | 100 | 0 | 0 | 0 | 5 ppbbelow the action level |
| North Haven Heights Water Assoc INC MT0000087 | 95 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Stoneridge Home Owners Association MT0004449 | 95 | 0 | 0 | 0 | 3 ppbbelow the action level |
| Ap Countryside Estates MT0006000 | 93 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Lakeview Park Estates Homeowners Assoc MT0000073 | 92 | 0 | 0 | 0 | 4 ppbbelow the action level |
| Buffalo Mountain Subdivision MT0005038 | 90 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Forest River Mobile Home and RV Park MT0004809 | 90 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Ranch Co Water & Sewer Dist the MT0003076 | 90 | 0 | 0 | 0 | 3 ppbbelow the action level |
| West Glacier Wua MT0000356 | 90 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Green Acres Court MT0000109 | 85 | 0 | 0 | 0 | 5 ppbbelow the action level |
| Morning Star MT0001672 | 85 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Stillwater Water District MT0000078 | 85 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Sunrise Terrace No 1 HOA MT0000077 | 85 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Spring Creek MHP MT0004625 | 82 | 0 | 0 | 0 | 5 ppbbelow the action level |
| Outback Mobile Home Settlement MT0000062 | 80 | 0 | 0 | 0 | 5 ppbbelow the action level |
| Ashley Hills HOA MT0004543 | 75 | 0 | 0 | 0 | 4 ppbbelow the action level |
| Aspen Knoll MT0004367 | 75 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Hideaway Tr Pk Columbia Falls MT0001737 | 75 | 0 | 0 | 0 | 3 ppbbelow the action level |
| Emerald Heights HOA Water & Sewer Dist MT0002862 | 70 | 0 | 0 | 0 | 3 ppbbelow the action level |
| Pleasant Grove Manufactured Home Sites MT0005211 | 70 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Wood Ridge HOA MT0004220 | 70 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Willow Glen Trailer Court Kspl MT0000098 | 69 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Hillcrest Community Water MT0000430 | 65 | 0 | 0 | 0 | 3 ppbbelow the action level |
| Panoramic Mountain River Heights W Dist MT0000089 | 65 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Sweetgrass Ranch Subdivision MT0005002 | 65 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Dwaynes Village MT0004745 | 63 | 0 | 0 | 0 | 2 ppbbelow the action level |
| East Valley Estates MT0004514 | 63 | 0 | 0 | 0 | 0 ppbbelow the action level |
| South Eighty Water MT0004276 | 63 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Halfmoon Mobile Home Park INC MT0003531 | 60 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Sky View Estates MT0004743 | 60 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Twin Acres Trailer Court MT0001745 | 60 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Chautauqua Terrace HOA MT0003141 | 55 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Meadowlark Mobile Home Park MT0000082 | 55 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Blanchard Hollow Estates Wua MT0003219 | 53 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Pheasant Haven Estates MT0004545 | 53 | 0 | 0 | 0 | 10 ppbbelow the action level |
| Fieldstone Subdivision MT0004635 | 52 | 0 | 0 | 0 | 0 ppbbelow the action level |
| District Court LLC MT0002651 | 50 | 0 | 0 | 0 | 9 ppbbelow the action level |
| Forest Hill HOA MT0001785 | 50 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Fosters Country View Tr Pk LLC MT0000429 | 50 | 0 | 0 | 0 | 0 ppbbelow the action level |
| R J Northern Park MT0000085 | 50 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Rosewood Acres MT0004658 | 50 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Whitefish Hills Village MT0004940 | 50 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Northfork Tr Ct Columbia Falls MT0000110 | 48 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Spruce Park Mobile Village MT0000079 | 48 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Columbia Range HOA MT0004818 | 47 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Alpine Mobile Manor MT0000100 | 45 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Cottonwood Homes MT0004626 | 45 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Sky Ranch Water Association MT0004198 | 45 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Woodlands Subdivision MT0005165 | 45 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Prairie Falcon Acres MT0004483 | 41 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Hansons Trailer Court MT0000095 | 40 | 0 | 0 | 0 | 3 ppbbelow the action level |
| Spruce Meadows HOA MT0004662 | 40 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Timbers at Whitefish the MT0004657 | 40 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Whitefish River Ranch MT0004660 | 38 | 0 | 0 | 0 | 0 ppbbelow the action level |
| East Wood Village Trailer Park MT0002814 | 36 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Foys Lakeside Estates Water & Sewer Dist MT0004150 | 36 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Mountain View Timbers HOA MT0004874 | 36 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Big Sky Mobile Manor MT0002493 | 35 | 0 | 0 | 0 | 5 ppbbelow the action level |
| Elk Park Village MT0002856 | 35 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Hillside Homes MT0000074 | 35 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Ledgewood Estates MT0004209 | 35 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Ridgeview Water Users Assoc MT0001934 | 35 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Hadley Road HOA MT0004645 | 33 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Riverview Overlook HOA MT0004631 | 33 | 0 | 0 | 0 | 0 ppbbelow the action level |
| The Homestead Chinook Ridge MT0005158 | 33 | 0 | 0 | 0 | 4 ppbbelow the action level |
| Brook Drive Water Assn MT0000099 | 32 | 0 | 0 | 0 | 3 ppbbelow the action level |
| Great Bear Estates MT0004542 | 32 | 0 | 0 | 0 | 0 ppbbelow the action level |
| River Bluff HOA Whitefish MT0003652 | 32 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Wapiti Acres County Water and Sewer Dist MT0003774 | 32 | 0 | 0 | 0 | 39 ppbat or above the action level |
| Timber Ridge HOA MT0004939 | 30 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Ashley Trails MT0004945 | 27 | 0 | 0 | 0 | 3 ppbbelow the action level |
| Juniper Bay Villas MT0004576 | 26 | 0 | 0 | 0 | 3 ppbbelow the action level |
| Country Bourne MT0004597 | 25 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Country Court Community INC MT0002819 | 25 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Halfmoon Meadows HOA MT0004976 | 25 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Harvest View HOA MT0004842 | 25 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Best View Estates MT0005080 | 50 | 0 | 0 | 0 | not reported |
Shaded rows report lead at or above the 15 ppb action level in their latest monitoring period. EPA sets that level for the value 9 in 10 sampled homes fall at or below; reaching it requires the utility to act, and it is not a measurement of any single tap. 2 systems in this table are at or above it. What an action level means
USGS · Monitoring stations
The water, more recently.
Available station readings in Flathead County, Montana. Each measurement keeps its time, unit and original source.
These readings describe water at a monitoring station. They do not test your tap, measure PFAS or lead, or determine whether water is safe to drink or swim in.
Recent observations load when this section comes into view.
How these readings update
We check for updates every 10 minutes while this section is visible and show supported observations from the last 48 hours. The time beside a reading is when USGS measured it; the checked time is when our service retrieved the response. We mark a reading more than 6 hours old as older. Provisional observations can change after USGS review. A missing reading does not mean zero or clean water.
Temperature, pH, dissolved oxygen, turbidity, conductivity, streamflow and water level are shown only where a station reports them. Different measurements have different units and sampling intervals. USGS data and documentation.
Your next step
Water testing, reports & local help.
Use these official directories to find your drinking-water agency, a certified laboratory and public water records. We have not yet added an individually reviewed local resource list for this county.
Official national directories
Water testing
Find your state’s private-well program
EPA’s state directory points well owners to local program information. Services and eligibility vary by state and county.
Water testing
Find a certified drinking-water laboratory
Use EPA’s directory to reach your state’s laboratory certification program. EPA does not provide on-request testing of residential drinking water.
Public records
Find your utility’s Consumer Confidence Report
EPA links to community water-system reports and explains how to read them. Look for your actual supplier rather than assuming every address in a county shares one system.
Public records
Explore USGS water observations
Find current and historical observations from USGS monitoring locations, including available stream, lake, and groundwater data. Measurements vary by station and do not replace a test of your household water.
A county overview cannot identify every property’s water provider. If you use a public water system, confirm its name on your bill and request its annual Consumer Confidence Report. Private wells need their own testing; public-system records do not describe a private well.
Understand water testing and laboratory reportsResource descriptions are compiled by Tap Water Lookup. Review dates describe our source check, not a new water sample. How we review sources · Suggest a correction
Explore your area
Local coverage in Flathead County
14ZIP areas in this overview
Explore the water-system records, recent station readings and testing resources on this county page. They describe the systems and stations identified in each section; they are not a separate water test for every community.
Towns and communities
- Columbia Falls
- Coram
- Hungry Horse
- Kalispell
- Kila
- Lakeside
- Marion
- Martin City
- Olney
- Polebridge
- Snowslip
- Somers
- West Glacier
- Whitefish
View ZIP areas and understand coverage
- 59901Kalispell
- 59912Columbia Falls
- 59913Coram
- 59916Snowslip
- 59919Hungry Horse
- 59920Kila
- 59922Lakeside
- 59925Marion
- 59926Martin City
- 59927Olney
- 59928Polebridge
- 59932Somers
- 59936West Glacier
- 59937Whitefish
These Census ZIP Code Tabulation Areas are grouped here by their largest county overlap. A ZIP area can cross county lines and contain several water suppliers or private wells. Place labels reflect Census geography, not verified postal city names or utility service boundaries.
Records for these areas are currently presented in this county overview rather than individual ZIP reports. An unpublished report does not mean there are no water records. Confirm your supplier on your water bill; if you use a private well, testing your own well is the relevant next step.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Database prepared 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.
Compiled by Tap Water Lookup from the sources identified on this page. Read the methodology and review process.