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Tap water quality report

Billings, MT

EPA monitoring detected 27 contaminants across the 46 water suppliers serving Billings. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

46
water suppliers
142,619
people served
27
contaminants found
Montana rankings Lead in Montana PFAS in Montana

What was found in Billings's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
16400 µg/L 164%
of the EPA limit, in the worst sample — 10000 µg/L
 2/46 SYR4
Nitrate-Nitrite
16400 µg/L 164%
of the EPA limit, in the worst sample — 10000 µg/L
 20/46 SYR4
Fluoride
2300 µg/L 57%
of the EPA limit 4000 µg/L
 16/46 SYR4
Copper
1690 µg/L 130%
of the EPA limit, in the worst sample — 1300 µg/L
 30/46 SYR4
TTHM
156 µg/L 195%
of the EPA limit, in the worst sample — 80 µg/L
 23/46 SYR4
Chloroform
117 µg/L
No EPA limit set
 23/46 SYR4
Barium
100 µg/L 5%
of the EPA limit 2000 µg/L
 7/46 SYR4
Total Haloacetic Acids (HAA5)
89 µg/L 148%
of the EPA limit, in the worst sample — 60 µg/L
 23/46 SYR4
Lead
87 µg/L 580%
of the EPA limit, in the worst sample — 15 µg/L
 29/46 SYR4
Lithium
85 µg/L
No EPA limit set
 4/46 UCMR-5
Trichloroacetic Acid
48.1 µg/L
No EPA limit set
 20/46 SYR4
Dichloroacetic Acid
41 µg/L
No EPA limit set
 22/46 SYR4
Bromodichloromethane
22 µg/L
No EPA limit set
 23/46 SYR4
Combined Uranium
18.9 µg/L 63%
of the EPA limit 30 µg/L
 14/46 SYR4
Dibromoacetic Acid
17.2 µg/L
No EPA limit set
 21/46 SYR4
Dibromochloromethane
15 µg/L
No EPA limit set
 23/46 SYR4
Gross Alpha, Excl. Radon And U
13 pCi/L 87%
of the EPA limit 15 pCi/L
 11/46 SYR4
Chromium
11 µg/L 11%
of the EPA limit 100 µg/L
 1/46 SYR4
Arsenic
9 µg/L 90%
of the EPA limit 10 µg/L
 13/46 SYR4
Monochloroacetic Acid
8.8 µg/L
No EPA limit set
 12/46 SYR4
Bromoform
5.6 µg/L
No EPA limit set
 12/46 SYR4
Selenium
5 µg/L 10%
of the EPA limit 50 µg/L
 15/46 SYR4
Di(2-ethylhexyl) Phthalate
2.1 µg/L 35%
of the EPA limit 6 µg/L
 1/46 SYR4
Dichloromethane
2 µg/L 40%
of the EPA limit 5 µg/L
 2/46 SYR4
Combined Radium (-226 And -228)
1.8 pCi/L 36%
of the EPA limit 5 pCi/L
 5/46 SYR4
Monobromoacetic Acid
1.4 µg/L
No EPA limit set
 11/46 SYR4
Lead
0.0130 mg/L 87%
of the EPA limit 0.0150 mg/L
 44/46 LCR
Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Billings

SupplierPopulation served
BILLINGS CITY OF 114,000
BILLINGS HEIGHTS CO WATER DIST OF 12,000
LOCKWOOD WATER AND SEWER DISTRICT 5,900
PIONEER WATER SERVICE 900
ESTATES AT YELLOWSTONE LLC 800
GOLDEN MEADOWS SUBDIVISION 772
FISHER WATER SERVICE 750
HILLSIDE VILLAGE 650
CHERRY CREEK ESTATES LLC 600
WINDSOR ESTATES 530
SUNDANCE SUBDIVISION 378
STONE CREEK SUBDIVISION 378
HIDDEN LAKE YELLOWSTONE COUNTY W AND S D 350
EMERALD VIEW PARK 320
SHILOH ROAD DEVELOPMENT 315
PRECISION WATER 250
GRANITE PARK WATER ASSOCIATION 250
GOLDEN MEADOWS SUBDIVISION 2ND CC 245
YELLOWSTONE BOYS AND GIRLS RANCH 240
WELLS GARDEN ESTATES 240
SKYCREST ESTATES SUBDIVISION 235
CRYSTAL SPRINGS WATER SYSTEM 225
THE NINES SUBDIVISION 220
OAK RIDGE ESTATES 200
STILL RIVER ESTATES SUBDIVISION 188
SADDLEBACK RIDGE ESTATES 150
C & C COMMUNITY INC 145
EASTWOOD MOBILE HOME COURT 140
GOLDEN EAGLE WATER USERS ASSN 125
RIVER GROVE ESTATES TR CT 100
ERICS EMERGENCY WATER SERVICE 100
ALDINGER ACRES SUBDIVISION 100
PEKS MOBILE HOME COURT 95
MITCHELL COURT APARTMENTS 80
MIDWAY TOWNHOMES WUA 75
ARROW CREEK TRAILER COURT 75
BLACK ROCK ESTATES SUBDIVISION 75
DUCK CREEK MOBILE HOME PARK 70
RIDGEVIEW SUBDIVISION PHASE ONE 60
BLUE GRASS WATER USERS ASSOCIATION 60
COONEY ENTERPRISES 50
DOUBLE DIAMOND SUBDIVISION ARBOR HILLS 50
EVERGREEN SUBDIVISION 45
SARTORIE LEGACY HOMES 35
SILVER CREEK CONDOMINIUMS IN YELLOWSTONE 28
MCCANN'S WATER SERVICE LLC 25

Frequently asked questions about Billings tap water

Is Billings tap water safe to drink?

EPA testing detected 27 contaminants in the water serving Billings. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Billings?

46 public water suppliers report drinking-water monitoring for Billings, Montana to the EPA. Each is listed above with its population served.

What contaminants are in Billings's water?

The contaminants EPA monitoring detected in Billings include Nitrate, Nitrate-Nitrite, Fluoride, Copper, TTHM. The full list, with the highest level found and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.