Is Minot, ND Tap Water Safe? Quality & Contaminants

What was found in Minot's water

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

Contaminant	Level vs EPA limit	Suppliers	Source
Copper	1480 µg/L 114% of the EPA limit, in the worst sample — 1300 µg/L	4/4	SYR4
Fluoride	720 µg/L 18% of the EPA limit 4000 µg/L	2/4	SYR4
Nitrate-Nitrite	700 µg/L 7% of the EPA limit 10000 µg/L	2/4	SYR4
Lithium	78 µg/L No EPA limit set	2/4	UCMR-5
TTHM	72.76 µg/L 91% of the EPA limit 80 µg/L	4/4	SYR4
Lead	29.2 µg/L 195% of the EPA limit, in the worst sample — 15 µg/L	4/4	SYR4
Dibromochloromethane	29.16 µg/L No EPA limit set	4/4	SYR4
Bromoform	27.76 µg/L No EPA limit set	3/4	SYR4
Total Haloacetic Acids (HAA5)	24.28 µg/L 40% of the EPA limit 60 µg/L	4/4	SYR4
Monobromoacetic Acid	16.8 µg/L No EPA limit set	1/4	SYR4
Bromodichloromethane	14.46 µg/L No EPA limit set	4/4	SYR4
Dibromoacetic Acid	11.8 µg/L No EPA limit set	4/4	SYR4
Barium	8.64 µg/L 0.4% of the EPA limit 2000 µg/L	2/4	SYR4
Dichloroacetic Acid	6.04 µg/L No EPA limit set	4/4	SYR4
Monochloroacetic Acid	5.12 µg/L No EPA limit set	1/4	SYR4
Chloroform	4.84 µg/L No EPA limit set	4/4	SYR4
Arsenic	1.74 µg/L 17% of the EPA limit 10 µg/L	1/4	SYR4
Selenium	1.65 µg/L 3.3% of the EPA limit 50 µg/L	1/4	SYR4
Chromium	1.37 µg/L 1.4% of the EPA limit 100 µg/L	1/4	SYR4
Trichloroacetic Acid	1.25 µg/L No EPA limit set	2/4	SYR4
Combined Radium (-226 And -228)	0.9700 pCi/L 19% of the EPA limit 5 pCi/L	1/4	SYR4
Gross Alpha, Excl. Radon And U	0.3300 pCi/L 2.2% of the EPA limit 15 pCi/L	1/4	SYR4
Combined Uranium	0.2700 µg/L 0.9% of the EPA limit 30 µg/L	1/4	SYR4
Lead	0.0135 mg/L 90% of the EPA limit 0.0150 mg/L	4/4	LCR
Pfpea	0.0030 µg/L No EPA limit set	1/4	UCMR-5

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 Minot

Supplier	Population served
MINOT CITY OF	48,743
NORTH PRAIRIE RWD-SYSTEM 1&2	7,748
NORTH PRAIRIE RWD-SYSTEM III	2,742
WEST RIVER WATER AND SEWER	450

Frequently asked questions about Minot tap water

Is Minot tap water safe to drink?

EPA testing detected 25 contaminants in the water serving Minot. 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 Minot?

4 public water suppliers report drinking-water monitoring for Minot, North Dakota to the EPA. Each is listed above with its population served.

What contaminants are in Minot's water?

The contaminants EPA monitoring detected in Minot include Copper, Fluoride, Nitrate-Nitrite, Lithium, 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.