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Tap water quality report

Dickinson, ND

EPA monitoring detected 18 contaminants across the 2 water suppliers serving Dickinson. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

2
water suppliers
34,216
people served
18
contaminants found
North Dakota rankings Lead in North Dakota PFAS in North Dakota

What was found in Dickinson'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
Fluoride
920 µg/L 23%
of the EPA limit 4000 µg/L
 1/2 SYR4
Copper
532 µg/L 41%
of the EPA limit 1300 µg/L
 2/2 SYR4
Nitrate-Nitrite
120 µg/L 1.2%
of the EPA limit 10000 µg/L
 1/2 SYR4
TTHM
110 µg/L 138%
of the EPA limit, in the worst sample — 80 µg/L
 2/2 SYR4
Chloroform
93.47 µg/L
No EPA limit set
 2/2 SYR4
Total Haloacetic Acids (HAA5)
67.65 µg/L 113%
of the EPA limit, in the worst sample — 60 µg/L
 2/2 SYR4
Lithium
52.3 µg/L
No EPA limit set
 2/2 UCMR-5
Dichloroacetic Acid
37.6 µg/L
No EPA limit set
 2/2 SYR4
Trichloroacetic Acid
29.2 µg/L
No EPA limit set
 2/2 SYR4
Lead
28.4 µg/L 189%
of the EPA limit, in the worst sample — 15 µg/L
 2/2 SYR4
Bromodichloromethane
15.08 µg/L
No EPA limit set
 2/2 SYR4
Barium
12.6 µg/L 0.6%
of the EPA limit 2000 µg/L
 1/2 SYR4
Monochloroacetic Acid
3.85 µg/L
No EPA limit set
 2/2 SYR4
Bromate
3 µg/L 30%
of the EPA limit 10 µg/L
 1/2 SYR4
Dibromochloromethane
1.46 µg/L
No EPA limit set
 2/2 SYR4
Gross Alpha, Excl. Radon And U
0.3590 pCi/L 2.4%
of the EPA limit 15 pCi/L
 1/2 SYR4
Pentachlorophenol
0.0400 µg/L 4%
of the EPA limit 1 µg/L
 1/2 SYR4
Lead
0.0053 mg/L 35%
of the EPA limit 0.0150 mg/L
 2/2 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 Dickinson

SupplierPopulation served
DICKINSON CITY OF 25,679
SOUTHWEST WATER AUTHORITY 8,537

Frequently asked questions about Dickinson tap water

Is Dickinson tap water safe to drink?

EPA testing detected 18 contaminants in the water serving Dickinson. 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 Dickinson?

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

What contaminants are in Dickinson's water?

The contaminants EPA monitoring detected in Dickinson include Fluoride, Copper, Nitrate-Nitrite, TTHM, Chloroform. 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.