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Tap water quality report

Fort Pierre, SD

EPA monitoring detected 11 contaminants across the 2 water suppliers serving Fort Pierre. 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
2,261
people served
11
contaminants found
South Dakota rankings Lead in South Dakota PFAS in South Dakota

What was found in Fort Pierre'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
Copper
1800 µg/L 138%
of the EPA limit, at the 95th percentile of samples — 1300 µg/L
Main supplier: FORT PIERRE · 2,236 people · 2017
2/2 SYR4
Fluoride
755 µg/L 19%
of the EPA limit 4000 µg/L
Highest in the city: MNI WICONI WTP / CORELINE · 25 people · 2019
1/2 SYR4
TTHM
49.71 µg/L 62%
of the EPA limit 80 µg/L
Main supplier: FORT PIERRE · 2,236 people · 2019
Highest in the city: 57.775 µg/L — MNI WICONI WTP / CORELINE · 25 people · 2019
2/2 SYR4
Barium
37.175 µg/L 1.9%
of the EPA limit 2000 µg/L
Highest in the city: MNI WICONI WTP / CORELINE · 25 people · 2019
1/2 SYR4
Total Haloacetic Acids (HAA5)
30.09 µg/L 50%
of the EPA limit 60 µg/L
Main supplier: FORT PIERRE · 2,236 people · 2019
Highest in the city: 33 µg/L — MNI WICONI WTP / CORELINE · 25 people · 2019
2/2 SYR4
Lead
1.9 µg/L 13%
of the EPA limit 15 µg/L
Main supplier: FORT PIERRE · 2,236 people · 2017
Highest in the city: 6.945 µg/L — MNI WICONI WTP / CORELINE · 25 people · 2017
2/2 SYR4
Chromium
3.74 µg/L 3.7%
of the EPA limit 100 µg/L
Highest in the city: MNI WICONI WTP / CORELINE · 25 people · 2019
1/2 SYR4
Gross Alpha, Excl. Radon And U
3.7 pCi/L 25%
of the EPA limit 15 pCi/L
Highest in the city: MNI WICONI WTP / CORELINE · 25 people · 2019
1/2 SYR4
Selenium
1.4475 µg/L 2.9%
of the EPA limit 50 µg/L
Highest in the city: MNI WICONI WTP / CORELINE · 25 people · 2019
1/2 SYR4
Antimony, Total
0.3569 µg/L 5.9%
of the EPA limit 6 µg/L
Highest in the city: MNI WICONI WTP / CORELINE · 25 people · 2019
1/2 SYR4
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
Main supplier: FORT PIERRE · 2,236 people · 2023
Highest in the city: 0.0020 mg/L — MNI WICONI WTP / CORELINE · 25 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 Fort Pierre

SupplierPopulation served
FORT PIERRE 2,236
MNI WICONI WTP / CORELINE 25

Frequently asked questions about Fort Pierre tap water

Is Fort Pierre tap water safe to drink?

EPA testing detected 11 contaminants in the water serving Fort Pierre. 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 Fort Pierre?

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

What contaminants are in Fort Pierre's water?

The contaminants EPA monitoring detected in Fort Pierre include Copper, Fluoride, TTHM, Barium, 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.