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Tap water quality report

Jamestown, ND

EPA monitoring detected 20 contaminants across the 2 water suppliers serving Jamestown. 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
20,977
people served
20
contaminants found
North Dakota rankings Lead in North Dakota PFAS in North Dakota

What was found in Jamestown'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
Copper
1400 µg/L 108%
of the EPA limit, in the worst sample — 1300 µg/L
 2/2 SYR4
Nitrate-Nitrite
1060 µg/L 11%
of the EPA limit 10000 µg/L
 2/2 SYR4
Fluoride
752 µg/L 19%
of the EPA limit 4000 µg/L
 2/2 SYR4
Lithium
99.5 µg/L
No EPA limit set
 2/2 UCMR-5
Lead
87.4 µg/L 583%
of the EPA limit, in the worst sample — 15 µg/L
 2/2 SYR4
Barium
19.7 µg/L 1%
of the EPA limit 2000 µg/L
 2/2 SYR4
Dibromoacetic Acid
12.3 µg/L
No EPA limit set
 2/2 SYR4
Total Haloacetic Acids (HAA5)
12.3 µg/L 21%
of the EPA limit 60 µg/L
 2/2 SYR4
Arsenic
4.88 µg/L 49%
of the EPA limit 10 µg/L
 2/2 SYR4
Monobromoacetic Acid
3.82 µg/L
No EPA limit set
 2/2 SYR4
TTHM
3.56 µg/L 4.5%
of the EPA limit 80 µg/L
 2/2 SYR4
Dichloroacetic Acid
2.55 µg/L
No EPA limit set
 2/2 SYR4
Gross Alpha, Excl. Radon And U
1.57 pCi/L 10%
of the EPA limit 15 pCi/L
 1/2 SYR4
Combined Uranium
1.54 µg/L 5.1%
of the EPA limit 30 µg/L
 1/2 SYR4
Combined Radium (-226 And -228)
1.36 pCi/L 27%
of the EPA limit 5 pCi/L
 2/2 SYR4
Bromodichloromethane
1.14 µg/L
No EPA limit set
 2/2 SYR4
Chloroform
1.11 µg/L
No EPA limit set
 2/2 SYR4
Dibromochloromethane
0.9000 µg/L
No EPA limit set
 1/2 SYR4
Bromoform
0.8200 µg/L
No EPA limit set
 1/2 SYR4
Lead
0.0109 mg/L 73%
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 Jamestown

SupplierPopulation served
JAMESTOWN CITY OF 15,427
STUTSMAN RURAL WATER DISTRICT 5,550

Frequently asked questions about Jamestown tap water

Is Jamestown tap water safe to drink?

EPA testing detected 20 contaminants in the water serving Jamestown. 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 Jamestown?

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

What contaminants are in Jamestown's water?

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