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Tap water quality report

Lakota, ND

EPA monitoring detected 23 contaminants across the 2 water suppliers serving Lakota. 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
3,173
people served
23
contaminants found
North Dakota rankings Lead in North Dakota PFAS in North Dakota

What was found in Lakota'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
Nitrate
2800 µg/L 28%
of the EPA limit 10000 µg/L
Main supplier: TRI-COUNTY WATER DISTRICT · 2,501 people · 2017
1/2 SYR4
Nitrate-Nitrite
2764 µg/L 28%
of the EPA limit 10000 µg/L
Main supplier: TRI-COUNTY WATER DISTRICT · 2,501 people · 2019
2/2 SYR4
Fluoride
586 µg/L 15%
of the EPA limit 4000 µg/L
Main supplier: TRI-COUNTY WATER DISTRICT · 2,501 people · 2017
Highest in the city: 652 µg/L — LAKOTA CITY OF · 672 people · 2017
2/2 SYR4
Copper
291.9 µg/L 22%
of the EPA limit 1300 µg/L
Main supplier: TRI-COUNTY WATER DISTRICT · 2,501 people · 2018
Highest in the city: 640.35 µg/L — LAKOTA CITY OF · 672 people · 2019
2/2 SYR4
Barium
52.4 µg/L 2.6%
of the EPA limit 2000 µg/L
Main supplier: TRI-COUNTY WATER DISTRICT · 2,501 people · 2017
2/2 SYR4
TTHM
24.522 µg/L 31%
of the EPA limit 80 µg/L
Main supplier: TRI-COUNTY WATER DISTRICT · 2,501 people · 2019
2/2 SYR4
Lead
6.8975 µg/L 46%
of the EPA limit 15 µg/L
Main supplier: TRI-COUNTY WATER DISTRICT · 2,501 people · 2018
Highest in the city: 10.347 µg/L — LAKOTA CITY OF · 672 people · 2019
2/2 SYR4
Bromodichloromethane
8.887 µg/L
No EPA limit set
Main supplier: TRI-COUNTY WATER DISTRICT · 2,501 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
8.568 µg/L 14%
of the EPA limit 60 µg/L
Main supplier: TRI-COUNTY WATER DISTRICT · 2,501 people · 2019
2/2 SYR4
Chloroform
8.083 µg/L
No EPA limit set
Main supplier: TRI-COUNTY WATER DISTRICT · 2,501 people · 2019
2/2 SYR4
Arsenic
1.33 µg/L 13%
of the EPA limit 10 µg/L
Main supplier: TRI-COUNTY WATER DISTRICT · 2,501 people · 2016
Highest in the city: 7.83 µg/L — LAKOTA CITY OF · 672 people · 2016
2/2 SYR4
Dibromochloromethane
6.575 µg/L
No EPA limit set
Main supplier: TRI-COUNTY WATER DISTRICT · 2,501 people · 2019
Highest in the city: 6.772 µg/L — LAKOTA CITY OF · 672 people · 2019
2/2 SYR4
Gross Alpha, Excl. Radon And U
6.5945 pCi/L 44%
of the EPA limit 15 pCi/L
Main supplier: TRI-COUNTY WATER DISTRICT · 2,501 people · 2018
2/2 SYR4
Combined Uranium
4.234 µg/L 14%
of the EPA limit 30 µg/L
Main supplier: TRI-COUNTY WATER DISTRICT · 2,501 people · 2018
2/2 SYR4
Dichloroacetic Acid
4.089 µg/L
No EPA limit set
Main supplier: TRI-COUNTY WATER DISTRICT · 2,501 people · 2019
2/2 SYR4
Monobromoacetic Acid
3.97 µg/L
No EPA limit set
Highest in the city: LAKOTA CITY OF · 672 people · 2019
1/2 SYR4
Chromium
3.17 µg/L 3.2%
of the EPA limit 100 µg/L
Main supplier: TRI-COUNTY WATER DISTRICT · 2,501 people · 2017
1/2 SYR4
Combined Radium (-226 And -228)
2.852 pCi/L 57%
of the EPA limit 5 pCi/L
Main supplier: TRI-COUNTY WATER DISTRICT · 2,501 people · 2018
2/2 SYR4
Dibromoacetic Acid
2.495 µg/L
No EPA limit set
Main supplier: TRI-COUNTY WATER DISTRICT · 2,501 people · 2019
2/2 SYR4
Trichloroacetic Acid
2.255 µg/L
No EPA limit set
Main supplier: TRI-COUNTY WATER DISTRICT · 2,501 people · 2019
2/2 SYR4
Bromoform
0.9990 µg/L
No EPA limit set
Main supplier: TRI-COUNTY WATER DISTRICT · 2,501 people · 2019
Highest in the city: 1.779 µg/L — LAKOTA CITY OF · 672 people · 2019
2/2 SYR4
Selenium
1.2 µg/L 2.4%
of the EPA limit 50 µg/L
Main supplier: TRI-COUNTY WATER DISTRICT · 2,501 people · 2017
1/2 SYR4
Lead
0.0012 mg/L 7.7%
of the EPA limit 0.0150 mg/L
Main supplier: TRI-COUNTY WATER DISTRICT · 2,501 people · 2024
Highest in the city: 0.0660 mg/L — LAKOTA CITY OF · 672 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 Lakota

SupplierPopulation served
TRI-COUNTY WATER DISTRICT 2,501
LAKOTA CITY OF 672

Frequently asked questions about Lakota tap water

Is Lakota tap water safe to drink?

EPA testing detected 23 contaminants in the water serving Lakota. 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 Lakota?

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

What contaminants are in Lakota's water?

The contaminants EPA monitoring detected in Lakota include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Barium. 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.