Tap WaterIndex

← North Dakota

Tap water quality report

Oakes, ND

EPA monitoring detected 22 contaminants across the 1 water supplier serving Oakes. 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.

1
water supplier
1,856
people served
22
contaminants found
North Dakota rankings Lead in North Dakota PFAS in North Dakota

What was found in Oakes'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-Nitrite
926 µg/L 9.3%
of the EPA limit 10000 µg/L
Main supplier: OAKES CITY OF · 1,856 people · 2019
1/1 SYR4
Nitrate
820 µg/L 8.2%
of the EPA limit 10000 µg/L
Main supplier: OAKES CITY OF · 1,856 people · 2017
1/1 SYR4
Copper
277.4 µg/L 21%
of the EPA limit 1300 µg/L
Main supplier: OAKES CITY OF · 1,856 people · 2018
1/1 SYR4
Fluoride
160 µg/L 4%
of the EPA limit 4000 µg/L
Main supplier: OAKES CITY OF · 1,856 people · 2016
1/1 SYR4
Lead
87.86 µg/L 586%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: OAKES CITY OF · 1,856 people · 2018
1/1 SYR4
TTHM
33.8705 µg/L 42%
of the EPA limit 80 µg/L
Main supplier: OAKES CITY OF · 1,856 people · 2019
1/1 SYR4
Chloroform
24.638 µg/L
No EPA limit set
Main supplier: OAKES CITY OF · 1,856 people · 2019
1/1 SYR4
Barium
21.4 µg/L 1.1%
of the EPA limit 2000 µg/L
Main supplier: OAKES CITY OF · 1,856 people · 2016
1/1 SYR4
Total Haloacetic Acids (HAA5)
20.1 µg/L 34%
of the EPA limit 60 µg/L
Main supplier: OAKES CITY OF · 1,856 people · 2019
1/1 SYR4
Dichloroacetic Acid
13.645 µg/L
No EPA limit set
Main supplier: OAKES CITY OF · 1,856 people · 2019
1/1 SYR4
Trichloroacetic Acid
5.14 µg/L
No EPA limit set
Main supplier: OAKES CITY OF · 1,856 people · 2019
1/1 SYR4
Bromodichloromethane
4.408 µg/L
No EPA limit set
Main supplier: OAKES CITY OF · 1,856 people · 2019
1/1 SYR4
Dibromochloromethane
3.496 µg/L
No EPA limit set
Main supplier: OAKES CITY OF · 1,856 people · 2019
1/1 SYR4
Monochloroacetic Acid
3.07 µg/L
No EPA limit set
Main supplier: OAKES CITY OF · 1,856 people · 2019
1/1 SYR4
Arsenic
2.901 µg/L 29%
of the EPA limit 10 µg/L
Main supplier: OAKES CITY OF · 1,856 people · 2018
1/1 SYR4
Combined Uranium
1.7365 µg/L 5.8%
of the EPA limit 30 µg/L
Main supplier: OAKES CITY OF · 1,856 people · 2018
1/1 SYR4
Dibromoacetic Acid
1.5825 µg/L
No EPA limit set
Main supplier: OAKES CITY OF · 1,856 people · 2019
1/1 SYR4
Bromoform
1.473 µg/L
No EPA limit set
Main supplier: OAKES CITY OF · 1,856 people · 2019
1/1 SYR4
Gross Alpha, Excl. Radon And U
1.22 pCi/L 8.1%
of the EPA limit 15 pCi/L
Main supplier: OAKES CITY OF · 1,856 people · 2018
1/1 SYR4
Combined Radium (-226 And -228)
0.5700 pCi/L 11%
of the EPA limit 5 pCi/L
Main supplier: OAKES CITY OF · 1,856 people · 2018
1/1 SYR4
Picloram
0.4540 µg/L 0.1%
of the EPA limit 500 µg/L
Main supplier: OAKES CITY OF · 1,856 people · 2019
1/1 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: OAKES CITY OF · 1,856 people · 2024
1/1 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 Oakes

SupplierPopulation served
OAKES CITY OF 1,856

Frequently asked questions about Oakes tap water

Is Oakes tap water safe to drink?

EPA testing detected 22 contaminants in the water serving Oakes. 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 Oakes?

1 public water supplier report drinking-water monitoring for Oakes, North Dakota to the EPA. Each is listed above with its population served.

What contaminants are in Oakes's water?

The contaminants EPA monitoring detected in Oakes include Nitrate-Nitrite, Nitrate, Copper, Fluoride, Lead. 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.