Is Kalispell, MT tap water safe?

Data: U.S. EPA · How we read the data · How we check it

No federal limits exceeded in EPA data for Kalispell Public Works. 2 PFAS were detected below the limits.

40 public water systems serve parts of Kalispell. The largest, Kalispell Public Works, serves 25,000 people. Your water bill names your system.

Largest system

Kalispell Public Works

25,000 people · Groundwater · EPA ID MT0000259

PFAS	Highest average	Limit	Status
PFOA Not detected	–	4 ppt	Not detected
PFOS One sample above limit	3.3 ppt	4 ppt	One sample above limit
PFHxS Detected, below limit	2.5 ppt	10 ppt	Detected, below limit
PFNA Not detected	–	10 ppt	Not detected
HFPO-DA (GenX) Not detected	–	10 ppt	Not detected

ppt = parts per trillion. "Highest average" is the highest average at any of the system's entry points, the way EPA compares results with the limits.

Lead: 2 ppb at the 90th percentile (Dec 2023, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 0

Across Montana, 0 of 40 water systems EPA tested had PFAS above a 2024 federal limit, and 6 systems were above the lead action level in results from the last five years. Montana results.

Kalispell homes and lead pipes

46%

of homes built before 1980 (Montana 49%, US 50%)

21%

built before 1950 (Montana 17%)

45%

of households rent (Montana 31%)

Lead service lines and lead solder were allowed until 1986, so homes from before then are the ones to check. Renting? Ask your landlord what the service line is made of, because it's their pipe to replace. How to check your own line.

Housing: Census American Community Survey 2020–2024 5-year estimates for Kalispell city (tables B25034, B25003). Estimates for small places have a margin of error.

Other water systems serving Kalispell

Flathead County Water and Sewer
9,520 people · Groundwater · Montana · lists this city
No PFAS above limits
Country Estates Water Supply
490 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Greenacres County Water and Sewer District
450 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Meadow Manor Water System
410 people · Purchased groundwater · Montana · lists this city
Not in EPA's PFAS sample
Mountain Villa Apts Kalispell Water System
300 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Northern Pines Community HOA
295 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample

33 more systems

Ap Williams Water System
280 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Ridgewood Terrace MHP
280 people · Purchased groundwater · Montana · lists this city
Not in EPA's PFAS sample
Rocky Mountain Hi RV Park Water System
275 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Alpine Pacific Utilities
270 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Ponderosa Homeowners Association Inc
246 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Green Tree Meadows County Water & Sewer District
237 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Hilltop Terrace Subdivision
230 people · Groundwater · Montana · lists this city
Coliform bacteria violation
Lion Mountain Homeowners Association
204 people · Groundwater · Montana · lists this city
Lead near 2027 level
Greenwood Village RV and MHP
195 people · Purchased groundwater · Montana · lists this city
Not in EPA's PFAS sample
Fox Hill Estates Water System
163 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
East Evergreen Mobile Manor Water System
155 people · Purchased groundwater · Montana · lists this city
Not in EPA's PFAS sample
Meadowland HOA
150 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Quail Ridge Water System
148 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Rocky Cliff Estates Water System
140 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Sunrise Terrace Subdivision No 2
131 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Meadow Hills Water and Sewer District
130 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
West Valley Pines HOA Inc
130 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Stillwater Estates County Water & Sewer District
130 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Two Mile Tract HOA
128 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Holbrook Estates Water System
120 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Wettington Water District Inc
119 people · Groundwater · Montana · lists this city
Coliform bacteria violation
Eagle Ridge Estates County Water & Sewer District
115 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Montana Christian College Water System
105 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Lakeshore Heights HOA
100 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Thompson Ranchettes II Water System
100 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
North Haven Heights Water Association Inc
95 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Stoneridge Home Owners Association
95 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Ap Countryside Estates Water System
93 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Pleasant Hill Estates HOA
90 people · Groundwater · Montana · lists this city
Coliform bacteria violation
Forest River Mobile Home and RV Park Water System
90 people · Purchased groundwater · Montana · lists this city
Not in EPA's PFAS sample
Sunrise Terrace No 1 HOA
85 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Stillwater Water District
85 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Pleasant View Homesites Water & Sewer District
85 people · Groundwater · Montana · lists this city
Coliform bacteria violation

How nearby cities compare

City	Main water system	PFAS	Lead (90th pct.)
Missoula 94 mi Missoula Water	Missoula Water	None above limits	2 ppb
Great Falls 148 mi City of Great Falls	City of Great Falls	None above limits	12 ppb
Helena 154 mi Helena Water System	Helena Water System	None above limits	3 ppb
Butte 177 mi Butte Silverbow Water Dept	Butte Silverbow Water Dept	None above limits	2 ppb
Bozeman 231 mi City of Bozeman	City of Bozeman	None above limits	1.6 ppb
Billings 314 mi City of Billings	City of Billings	None above limits	3 ppb

Kalispell ZIP codes (1)

59901

Questions

Is Kalispell tap water safe to drink?

Kalispell Public Works has had no health-based violations since 2016. Utility data can't show lead from your own pipes: if your home was built before 1986, test your tap. Your utility's annual Consumer Confidence Report is the official summary.

Who supplies water in Kalispell, MT?

40 public water systems serve parts of Kalispell. The largest is Kalispell Public Works (25,000 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Kalispell tap water have PFAS?

Kalispell Public Works had 2 PFAS detected at least once in EPA's 2023–2025 testing, all with averages below the federal limits.

Do Kalispell homes have lead pipes?

Census estimates put 46% of Kalispell homes as built before 1980 (Montana: 49%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. Kalispell Public Works's service line inventory says what your line is made of. The only way to know for your home is to check the line where it enters the house and test your tap.

Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.