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Tap water quality report

Box Elder, SD

EPA monitoring detected 12 contaminants across the 1 water supplier serving Box Elder. 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
14,000
people served
12
contaminants found
South Dakota rankings Lead in South Dakota PFAS in South Dakota

What was found in Box Elder'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
593 µg/L 5.9%
of the EPA limit 10000 µg/L
Main supplier: BOX ELDER · 14,000 people · 2019
1/1 SYR4
Fluoride
400 µg/L 10%
of the EPA limit 4000 µg/L
Main supplier: BOX ELDER · 14,000 people · 2017
1/1 SYR4
Copper
293.15 µg/L 23%
of the EPA limit 1300 µg/L
Main supplier: BOX ELDER · 14,000 people · 2017
1/1 SYR4
Barium
99.9 µg/L 5%
of the EPA limit 2000 µg/L
Main supplier: BOX ELDER · 14,000 people · 2017
1/1 SYR4
Selenium
18.25 µg/L 37%
of the EPA limit 50 µg/L
Main supplier: BOX ELDER · 14,000 people · 2017
1/1 SYR4
Gross Alpha, Excl. Radon And U
15.36 pCi/L 102%
of the EPA limit, at the 95th percentile of samples — 15 pCi/L
Main supplier: BOX ELDER · 14,000 people · 2017
1/1 SYR4
Lithium
14 µg/L
No EPA limit set
Main supplier: BOX ELDER · 14,000 people · 2023
1/1 UCMR-5
Combined Uranium
8.8735 µg/L 30%
of the EPA limit 30 µg/L
Main supplier: BOX ELDER · 14,000 people · 2017
1/1 SYR4
TTHM
7.379 µg/L 9.2%
of the EPA limit 80 µg/L
Main supplier: BOX ELDER · 14,000 people · 2019
1/1 SYR4
Chromium
4.4 µg/L 4.4%
of the EPA limit 100 µg/L
Main supplier: BOX ELDER · 14,000 people · 2017
1/1 SYR4
Lead
4 µg/L 27%
of the EPA limit 15 µg/L
Main supplier: BOX ELDER · 14,000 people · 2017
1/1 SYR4
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
Main supplier: BOX ELDER · 14,000 people · 2023
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 Box Elder

SupplierPopulation served
BOX ELDER 14,000

Frequently asked questions about Box Elder tap water

Is Box Elder tap water safe to drink?

EPA testing detected 12 contaminants in the water serving Box Elder. 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 Box Elder?

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

What contaminants are in Box Elder's water?

The contaminants EPA monitoring detected in Box Elder include Nitrate, Fluoride, Copper, Barium, Selenium. 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.