Is Billings, 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 City of Billings.

40 public water systems serve parts of Billings. The largest, City of Billings, serves 114,000 people. Your water bill names your system.

Largest system

City of Billings

114,000 people · Surface water · EPA ID MT0000153

PFAS	Highest average	Limit	Status
PFOA Not detected	–	4 ppt	Not detected
PFOS Not detected	–	4 ppt	Not detected
PFHxS Not detected	–	10 ppt	Not detected
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: 3 ppb at the 90th percentile (Nov 2026, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 0

Full City of Billings results

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.

Billings homes and lead pipes

50%

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

12%

built before 1950 (Montana 17%)

35%

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 Billings city (tables B25034, B25003). Estimates for small places have a margin of error.

Other water systems serving Billings

Billings Heights County Water District of
12,000 people · Purchased surface water · Montana · lists this city
Lithium above screening level
Lockwood Water and Sewer District
5,900 people · Surface water · Montana · lists this city
Lithium above screening level
Pioneer Water Service
900 people · Purchased surface water · Montana · lists this city
Not in EPA's PFAS sample
Estates at Yellowstone LLC
800 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Golden Meadows Subdivision
772 people · Purchased surface water · Montana · lists this city
Not in EPA's PFAS sample
Fisher Water Service
750 people · Purchased surface water · Montana · lists this city
Not in EPA's PFAS sample

33 more systems

Hillside Village Water System
650 people · Purchased surface water · Montana · lists this city
Not in EPA's PFAS sample
Cherry Creek Estates LLC
600 people · Purchased surface water · Montana · lists this city
Not in EPA's PFAS sample
Windsor Estates Water System
530 people · Purchased surface water · Montana · lists this city
Not in EPA's PFAS sample
Sundance Subdivision
378 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Stone Creek Subdivision
378 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Hidden Lake Yellowstone County Water & Sewer District D
350 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Emerald View Park Water System
320 people · Purchased surface water · Montana · lists this city
Not in EPA's PFAS sample
Shiloh Road Development Water System
315 people · Purchased surface water · Montana · lists this city
Not in EPA's PFAS sample
Precision Water
250 people · Purchased surface water · Montana · lists this city
Not in EPA's PFAS sample
Granite Park Water Association
250 people · Groundwater · Montana · lists this city
Nitrate-nitrite violation
Golden Meadows Subdivision 2nd Cc
245 people · Purchased surface water · Montana · lists this city
Not in EPA's PFAS sample
Yellowstone Boys and Girls Ranch Water System
240 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Wells Garden Estates
240 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Skycrest Estates Subdivision
235 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Crystal Springs Water System
225 people · Groundwater · Montana · lists this city
Nitrate-nitrite violations
The Nines Subdivision
220 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Oak Ridge Estates Water System
200 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Still River Estates Subdivision
188 people · Groundwater · Montana · lists this city
Nitrate-nitrite violation
Saddleback Ridge Estates Water System
150 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
C & C Community Inc
145 people · Purchased surface water · Montana · lists this city
Not in EPA's PFAS sample
Eastwood Mobile Home Court Water System
140 people · Purchased surface water · Montana · lists this city
Not in EPA's PFAS sample
Golden Eagle Water Users Association
125 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sampleAlso: 1 health-based violation since 2016
River Grove Estates Tr Ct Water System
100 people · Groundwater · Montana · lists this city
Lead near 2027 level
Aldinger Acres Subdivision
100 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Water Drop LLC
100 people · Purchased surface water · Montana · lists this city
Not in EPA's PFAS sample
Peks Mobile Home Court Water System
95 people · Purchased surface water · Montana · lists this city
Not in EPA's PFAS sample
Mitchell Court Apartments Water System
80 people · Purchased surface water · Montana · lists this city
Not in EPA's PFAS sample
Arrow Creek Trailer Court Water System
75 people · Groundwater · Montana · lists this city
Nitrate-nitrite violations
Black Rock Estates Subdivision
75 people · Groundwater · Montana · lists this city
Lithium above screening level
Midway Townhomes Wua Water System
75 people · Purchased surface water · Montana · lists this city
Not in EPA's PFAS sample
Duck Creek Mobile Home Park Water System
70 people · Groundwater · Montana · lists this city
Nitrate-nitrite violations
Blue Grass Water Users Association
60 people · Groundwater · Montana · lists this city
Not in EPA's PFAS sample
Ridgeview Subdivision Phase One
60 people · Purchased surface water · Montana · lists this city
Not in EPA's PFAS sample

How nearby cities compare

City	Main water system	PFAS	Lead (90th pct.)
Bozeman 121 mi City of Bozeman	City of Bozeman	None above limits	1.6 ppb
Helena 176 mi Helena Water System	Helena Water System	None above limits	3 ppb
Great Falls 177 mi City of Great Falls	City of Great Falls	None above limits	12 ppb
Butte 198 mi Butte Silverbow Water Dept	Butte Silverbow Water Dept	None above limits	2 ppb
Missoula 274 mi Missoula Water	Missoula Water	None above limits	2 ppb
Kalispell 324 mi Kalispell Public Works	Kalispell Public Works	None above limits	2 ppb

Billings ZIP codes (1)

59102

Questions

Is Billings tap water safe to drink?

City of Billings 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 Billings, MT?

40 public water systems serve parts of Billings. The largest is City of Billings (114,000 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.

Does Billings tap water have PFAS?

None detected above EPA's reporting limits. City of Billings had no PFAS detected in EPA's 2023–2025 testing. "Not detected" means below the reporting limit (about 2 to 20 ppt), not proven zero.

Do Billings homes have lead pipes?

Census estimates put 50% of Billings 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. City of Billings'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.