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Tap water quality report

Watford City, ND

EPA monitoring detected 19 contaminants across the 3 water suppliers serving Watford City. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

3
water suppliers
10,317
people served
19
contaminants found
North Dakota rankings Lead in North Dakota PFAS in North Dakota

What was found in Watford City'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.

ContaminantLevel vs EPA limitSuppliersSource
Copper
2650 µg/L 204%
of the EPA limit, at the 95th percentile of samples — 1300 µg/L
Main supplier: WATFORD CITY CITY OF · 6,390 people · 2018
3/3 SYR4
Fluoride
1481 µg/L 37%
of the EPA limit 4000 µg/L
Highest in the city: WATFORD RESIDENCE SUITES · 32 people · 2018
1/3 SYR4
Nitrate-Nitrite
180 µg/L 1.8%
of the EPA limit 10000 µg/L
Highest in the city: WATFORD RESIDENCE SUITES · 32 people · 2019
1/3 SYR4
Lithium
69.5 µg/L
No EPA limit set
Main supplier: WATFORD CITY CITY OF · 6,390 people · 2023
1/3 UCMR-5
TTHM
27.32 µg/L 34%
of the EPA limit 80 µg/L
Main supplier: WATFORD CITY CITY OF · 6,390 people · 2019
2/3 SYR4
Barium
20.87 µg/L 1%
of the EPA limit 2000 µg/L
Highest in the city: WATFORD RESIDENCE SUITES · 32 people · 2018
1/3 SYR4
Chloroform
20.7175 µg/L
No EPA limit set
Main supplier: WATFORD CITY CITY OF · 6,390 people · 2019
2/3 SYR4
Total Haloacetic Acids (HAA5)
15.2475 µg/L 25%
of the EPA limit 60 µg/L
Main supplier: WATFORD CITY CITY OF · 6,390 people · 2019
2/3 SYR4
Lead
11.48 µg/L 77%
of the EPA limit 15 µg/L
Main supplier: WATFORD CITY CITY OF · 6,390 people · 2018
2/3 SYR4
Dichloroacetic Acid
11.375 µg/L
No EPA limit set
Main supplier: WATFORD CITY CITY OF · 6,390 people · 2019
2/3 SYR4
Bromodichloromethane
6.2275 µg/L
No EPA limit set
Main supplier: WATFORD CITY CITY OF · 6,390 people · 2019
Highest in the city: 6.552 µg/L — MCKENZIE COUNTY WRD · 3,895 people · 2019
2/3 SYR4
Trichloroacetic Acid
3.524 µg/L
No EPA limit set
Main supplier: WATFORD CITY CITY OF · 6,390 people · 2019
2/3 SYR4
Monochloroacetic Acid
2.03 µg/L
No EPA limit set
Main supplier: WATFORD CITY CITY OF · 6,390 people · 2019
Highest in the city: 3.04 µg/L — MCKENZIE COUNTY WRD · 3,895 people · 2019
2/3 SYR4
Dibromochloromethane
2.375 µg/L
No EPA limit set
Main supplier: WATFORD CITY CITY OF · 6,390 people · 2019
2/3 SYR4
Combined Radium (-226 And -228)
1.734 pCi/L 35%
of the EPA limit 5 pCi/L
Highest in the city: WATFORD RESIDENCE SUITES · 32 people · 2017
1/3 SYR4
Gross Alpha, Excl. Radon And U
1.159 pCi/L 7.7%
of the EPA limit 15 pCi/L
Highest in the city: WATFORD RESIDENCE SUITES · 32 people · 2017
1/3 SYR4
Dibromoacetic Acid
1.117 µg/L
No EPA limit set
Main supplier: WATFORD CITY CITY OF · 6,390 people · 2019
2/3 SYR4
Combined Uranium
0.5790 µg/L 1.9%
of the EPA limit 30 µg/L
Highest in the city: WATFORD RESIDENCE SUITES · 32 people · 2017
1/3 SYR4
Lead
0.0068 mg/L 46%
of the EPA limit 0.0150 mg/L
Main supplier: WATFORD CITY CITY OF · 6,390 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 Watford City

SupplierPopulation served
WATFORD CITY CITY OF 6,390
MCKENZIE COUNTY WRD 3,895
WATFORD RESIDENCE SUITES 32

Frequently asked questions about Watford City tap water

Is Watford City tap water safe to drink?

EPA testing detected 19 contaminants in the water serving Watford City. 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 Watford City?

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

What contaminants are in Watford City's water?

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