County · Montana

Gallatin County, Montana: drinking water records

Name: Drinking water records for Gallatin County, Montana
Creator: U.S. Environmental Protection Agency
License: https://www.usa.gov/government-works

Explore EPA records for 64 community water systems across 8 ZIP codes in Gallatin County, then find water-testing resources and available recent monitoring-station readings.

In focus64Community water systems

Public records. Clearer context.

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 4 of the 64 listed systems in this snapshot. A system with no reported PFAS detection is not a test of every tap or every contaminant.

systems in EPA's PFAS survey

systems where PFAS was found

systems at or above the PFOA or PFOS limit, on the yearly-average basis EPA uses

systems that have reached the lead action level

systems with a health-based violation since 2016

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 64 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	Health-based violations	Lead, 9 in 10 homes at or below
West Yellowstone Town of MT0003136	9,899	180	1	1.3 ppbbelow the action level
Bozeman City of MT0000161	56,000	180	0	1.6 ppbbelow the action level
Belgrade City of MT0000136	10,460	420	0	1.8 ppbbelow the action level
River Rock County Water and Sewer Dist MT0004082	4,200	60	0	3.7 ppbbelow the action level
Three Forks City of MT0000343	1,900	0	1	2 ppbbelow the action level
Baxter Creek No 2 HOA MT0003323	450	0	1	1.1 ppbbelow the action level
Mt Ellis Academy MT0001262	106	0	2	1 ppbbelow the action level
Godfrey Canyon Estates MT0002398	100	0	1	1 ppbbelow the action level
Home 40 Public Water Supply MT0004960	45	0	1	0.2 ppbbelow the action level
Fishermans Village Subdivision MT0004722	25	0	4	0.5 ppbbelow the action level
North Star Zoot Water MT0004284	4,323	0	0	3 ppbbelow the action level
Rae Water and Sewer Dist 313 MT0000628	2,325	0	0	2.0 ppbbelow the action level
Manhattan Town of MT0000285	1,800	0	0	2 ppbbelow the action level
Valley Grove Subdivision MT0003780	825	0	0	2.0 ppbbelow the action level
Landmark Subdivision MT0004262	750	0	0	0 ppbbelow the action level
Elk Grove Water MT0004248	672	0	0	4.4 ppbbelow the action level
Genesis Business Park MT0004178	670	0	0	4.3 ppbbelow the action level
Covered Wagon Mb Hm Park MT0003810	500	0	0	2.6 ppbbelow the action level
Wylie Creek Estates Subdivision MT0003961	400	0	0	2 ppbbelow the action level
Firelight Meadows LLC MT0004236	350	0	0	0 ppbbelow the action level
Riverside Water and Sewer Dist MT0002173	344	0	0	0.3 ppbbelow the action level
Mountain Meadows Estates LLP MT0001791	300	0	0	4 ppbbelow the action level
Forest Park Tr Ct No 1 Bozeman MT0001366	260	0	0	1.5 ppbbelow the action level
Lexley Acres Mobile Home Park MT0000461	250	0	0	2 ppbbelow the action level
Hebgen Lake Estates Co Water Sewer Distr MT0001983	230	0	0	13 ppbbelow the action level
Spirit Hills Subdivision MT0004208	230	0	0	1.6 ppbbelow the action level
Hidden Valley Owner LLC MT0000035	200	0	0	7 ppbbelow the action level
Star Mobile Home Park MT0000034	190	0	0	2.6 ppbbelow the action level
Ramshorn View Estates MT0004035	185	0	0	0.3 ppbbelow the action level
Churchill North Subdivision MT0004431	155	0	0	4 ppbbelow the action level
Cobblestone Subdivision MT0004572	150	0	0	0 ppbbelow the action level
Springvale Subdivision MT0001823	150	0	0	1 ppbbelow the action level
Lazy J South Subdivision MT0004432	122	0	0	0.1 ppbbelow the action level
Manhattan Camper Court MT0001821	105	0	0	7 ppbbelow the action level
Gallatin Village Mob Hm Park MT0000627	100	0	0	0.8 ppbbelow the action level
Riders Trailer Court MT0001376	100	0	0	1 ppbbelow the action level
Settlement the MT0004363	100	0	0	0 ppbbelow the action level
Stans Garden MT0004899	100	0	0	0.3 ppbbelow the action level
Mystic Heights HOA Bozeman MT0000795	96	0	0	2 ppbbelow the action level
Springhill Park Subdivision MT0000796	90	0	0	0.8 ppbbelow the action level
Yellowstone Holiday Wtr and Sew District MT0001326	85	0	0	3 ppbbelow the action level
Churchill Retirement Home MT0001375	80	0	0	0 ppbbelow the action level
Gateway Village System 7 MT0005032	77	0	0	0.2 ppbbelow the action level
Bridger Base Water System MT0004931	75	0	0	1.7 ppbbelow the action level
Gateway Village System 5 MT0005030	70	0	0	0 ppbbelow the action level
Ponderosa Mb Home Subd MT0000548	70	0	0	2 ppbbelow the action level
Gateway Village System 2 MT0005027	68	0	0	0.7 ppbbelow the action level
Gateway Village System 3 MT0005028	68	0	0	0.3 ppbbelow the action level
Thomson Mobile Home Park MT0000037	65	0	0	1.3 ppbbelow the action level
Gateway Village System 4 MT0005029	60	0	0	0.2 ppbbelow the action level
Bridger Pines County W and S District MT0001787	58	0	0	0.2 ppbbelow the action level
Antler Ridge Homeowners Association MT0004202	50	0	0	0 ppbbelow the action level
Belgrade Trailer Court MT0002696	50	0	0	2.2 ppbbelow the action level
Franklin Hills Subdivision MT0004734	50	0	0	0 ppbbelow the action level
Gravel Hollow LLC MT0004564	50	0	0	1 ppbbelow the action level
Potts Trailer Court Belgrade MT0000033	50	0	0	0.9 ppbbelow the action level
Forest Creek Subd MT0002074	45	0	0	2 ppbbelow the action level
Gallatin River Apartments MT0001891	40	0	0	0 ppbbelow the action level
Spanish Peaks Mountain Club MT0004588	40	0	0	1.7 ppbbelow the action level
Rocky Creek Tr Court MT0000115	35	0	0	2 ppbbelow the action level
Bmp Lincoln Rentals LLC MT0002548	31	0	0	0.2 ppbbelow the action level
Country Court Gallatin MT0001644	30	0	0	0.4 ppbbelow the action level
Dyksterhouse Well Users Assoc MT0004598	28	0	0	1 ppbbelow the action level
Hardin Subdivision MT0004263	28	0	0	1 ppbbelow the action level

USGS · Monitoring stations

The water, more recently.

Available station readings in Gallatin 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.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-08-05

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.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-08-11

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.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-09-09

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.

U.S. Geological Survey
Source reviewed 2026-09-15

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 reports

Resource 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 Gallatin County

8ZIP 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

Big Sky
Bozeman
Four Corners
Gallatin River Ranch
Sedan
West Yellowstone
Wheatland
Willow Creek

Explore water-system records Find water-testing resources

View ZIP areas and understand coverage

59714Sedan
59715Bozeman
59718Four Corners
59730Big Sky
59741Gallatin River Ranch
59752Wheatland
59758West Yellowstone
59760Willow Creek

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.

Beyond this county page

Keep reading. Compare nearby.

PFASReading PFAS survey resultsWhat a detection, a reporting level and a yearly average mean in EPA’s PFAS survey records.LeadChoosing a lead filter11 systems here have reached the lead action level. See how to check a filter’s lead-reduction certification.Your utilityFind your annual water reportConfirm the supplier on your bill, then read its Consumer Confidence Report for local results.

Counties near Gallatin County

All Montana counties

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.