Is Baker, MT Tap Water Safe? Quality & Contaminants

What was found in Baker's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

Contaminant	Level vs EPA limit	Suppliers	Source
Fluoride	400 µg/L 10% of the EPA limit 4000 µg/L Main supplier: BAKER CITY OF · 1,858 people · 2012	1/3	SYR4
Copper	301.8 µg/L 23% of the EPA limit 1300 µg/L Main supplier: BAKER CITY OF · 1,858 people · 2017	3/3	SYR4
Nitrate-Nitrite	60 µg/L 0.6% of the EPA limit 10000 µg/L Main supplier: BAKER CITY OF · 1,858 people · 2019	1/3	SYR4
Lead	19.75 µg/L 132% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: BAKER CITY OF · 1,858 people · 2017	3/3	SYR4
TTHM	6.91 µg/L 8.6% of the EPA limit 80 µg/L Main supplier: BAKER CITY OF · 1,858 people · 2019	2/3	SYR4
Gross Alpha, Excl. Radon And U	4.8 pCi/L 32% of the EPA limit 15 pCi/L Main supplier: BAKER CITY OF · 1,858 people · 2019	1/3	SYR4
Total Haloacetic Acids (HAA5)	4.74 µg/L 7.9% of the EPA limit 60 µg/L Main supplier: BAKER CITY OF · 1,858 people · 2019	3/3	SYR4
Chloroform	4.61 µg/L No EPA limit set Main supplier: BAKER CITY OF · 1,858 people · 2019	2/3	SYR4
Dichloroacetic Acid	3.54 µg/L No EPA limit set Main supplier: BAKER CITY OF · 1,858 people · 2019	3/3	SYR4
Bromodichloromethane	1.6415 µg/L No EPA limit set Main supplier: BAKER CITY OF · 1,858 people · 2019	1/3	SYR4
Trichloroacetic Acid	0.8995 µg/L No EPA limit set Main supplier: BAKER CITY OF · 1,858 people · 2019	1/3	SYR4
Dibromochloromethane	0.6800 µg/L No EPA limit set Main supplier: BAKER CITY OF · 1,858 people · 2019	1/3	SYR4
Dibromoacetic Acid	0.4800 µg/L No EPA limit set Main supplier: BAKER CITY OF · 1,858 people · 2019 Highest in the city: 0.6210 µg/L — FALLON COUNTY WATER DISTRICT · 85 people · 2019	3/3	SYR4
Lead	0.0030 mg/L 20% of the EPA limit 0.0150 mg/L Main supplier: BAKER CITY OF · 1,858 people · 2024 Highest in the city: 0.0240 mg/L — FALLON COUNTY WATER DISTRICT · 85 people · 2024	3/3	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 95th percentile of the system's samples — 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 Baker

Supplier	Population served
BAKER CITY OF	1,858
NORTH BAKER WATER AND OR SEWER DIST	112
FALLON COUNTY WATER DISTRICT	85

Frequently asked questions about Baker tap water

Is Baker tap water safe to drink?

EPA testing detected 14 contaminants in the water serving Baker. 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 Baker?

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

What contaminants are in Baker's water?

The contaminants EPA monitoring detected in Baker include Fluoride, Copper, Nitrate-Nitrite, Lead, TTHM. The full list, with the level at the main supplier 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.