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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 level at the main supplier 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 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
Fluoride
920 µg/L 23%
of the EPA limit 4000 µg/L
Highest in the city: SOUTHWEST WATER AUTHORITY · 8,537 people · 2016
1/2 SYR4
Copper
132.6 µg/L 10%
of the EPA limit 1300 µg/L
Main supplier: DICKINSON CITY OF · 25,679 people · 2019
2/2 SYR4
Nitrate-Nitrite
120 µg/L 1.2%
of the EPA limit 10000 µg/L
Highest in the city: SOUTHWEST WATER AUTHORITY · 8,537 people · 2019
1/2 SYR4
Lithium
47.2 µg/L
No EPA limit set
Main supplier: DICKINSON CITY OF · 25,679 people · 2025
Highest in the city: 52.3 µg/L — SOUTHWEST WATER AUTHORITY · 8,537 people · 2025
2/2 UCMR-5
Total Haloacetic Acids (HAA5)
17.4275 µg/L 29%
of the EPA limit 60 µg/L
Main supplier: DICKINSON CITY OF · 25,679 people · 2019
Highest in the city: 24.3125 µg/L — SOUTHWEST WATER AUTHORITY · 8,537 people · 2019
2/2 SYR4
Trichloroacetic Acid
23.652 µg/L
No EPA limit set
Main supplier: DICKINSON CITY OF · 25,679 people · 2019
2/2 SYR4
Dichloroacetic Acid
14.11 µg/L
No EPA limit set
Main supplier: DICKINSON CITY OF · 25,679 people · 2019
Highest in the city: 20.05 µg/L — SOUTHWEST WATER AUTHORITY · 8,537 people · 2019
2/2 SYR4
Lead
15.686 µg/L 105%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: DICKINSON CITY OF · 25,679 people · 2019
2/2 SYR4
TTHM
14.798 µg/L 18%
of the EPA limit 80 µg/L
Main supplier: DICKINSON CITY OF · 25,679 people · 2019
2/2 SYR4
Barium
12.6 µg/L 0.6%
of the EPA limit 2000 µg/L
Highest in the city: SOUTHWEST WATER AUTHORITY · 8,537 people · 2016
1/2 SYR4
Chloroform
12.574 µg/L
No EPA limit set
Main supplier: DICKINSON CITY OF · 25,679 people · 2019
2/2 SYR4
Monochloroacetic Acid
3.6425 µg/L
No EPA limit set
Main supplier: DICKINSON CITY OF · 25,679 people · 2019
2/2 SYR4
Bromate
3 µg/L 30%
of the EPA limit 10 µg/L
Highest in the city: SOUTHWEST WATER AUTHORITY · 8,537 people · 2019
1/2 SYR4
Bromodichloromethane
2.3685 µg/L
No EPA limit set
Main supplier: DICKINSON CITY OF · 25,679 people · 2019
2/2 SYR4
Dibromochloromethane
1.459 µg/L
No EPA limit set
Main supplier: DICKINSON CITY OF · 25,679 people · 2019
2/2 SYR4
Gross Alpha, Excl. Radon And U
0.3590 pCi/L 2.4%
of the EPA limit 15 pCi/L
Highest in the city: SOUTHWEST WATER AUTHORITY · 8,537 people · 2018
1/2 SYR4
Pentachlorophenol
0.0400 µg/L 4%
of the EPA limit 1 µg/L
Highest in the city: SOUTHWEST WATER AUTHORITY · 8,537 people · 2017
1/2 SYR4
Lead
0.0053 mg/L 35%
of the EPA limit 0.0150 mg/L
Main supplier: DICKINSON CITY OF · 25,679 people · 2025
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 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 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, Lithium, Total Haloacetic Acids (HAA5). 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.