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Tap water quality report

New Underwood, SD

EPA monitoring detected 8 contaminants across the 4 water suppliers serving New Underwood. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

4
water suppliers
1,143
people served
8
contaminants found
South Dakota rankings Lead in South Dakota PFAS in South Dakota

What was found in New Underwood'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
Fluoride
600 µg/L 15%
of the EPA limit 4000 µg/L
 2/4 SYR4
Copper
492 µg/L 38%
of the EPA limit 1300 µg/L
 4/4 SYR4
Barium
61 µg/L 3.1%
of the EPA limit 2000 µg/L
 2/4 SYR4
Gross Alpha, Excl. Radon And U
57.8 pCi/L 385%
of the EPA limit, in the worst sample — 15 pCi/L
 2/4 SYR4
Lead
6 µg/L 40%
of the EPA limit 15 µg/L
 4/4 SYR4
TTHM
3.89 µg/L 4.9%
of the EPA limit 80 µg/L
 2/4 SYR4
Chromium
1 µg/L 1%
of the EPA limit 100 µg/L
 1/4 SYR4
Lead
0.0050 mg/L 33%
of the EPA limit 0.0150 mg/L
 4/4 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 New Underwood

SupplierPopulation served
NEW UNDERWOOD 679
VIEWFIELD RURAL WATER SYSTEM 220
OAKS WATER USERS ASSOCIATION 180
COPPER OAKS I 64

Frequently asked questions about New Underwood tap water

Is New Underwood tap water safe to drink?

EPA testing detected 8 contaminants in the water serving New Underwood. 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 New Underwood?

4 public water suppliers report drinking-water monitoring for New Underwood, South Dakota to the EPA. Each is listed above with its population served.

What contaminants are in New Underwood's water?

The contaminants EPA monitoring detected in New Underwood include Fluoride, Copper, Barium, Gross Alpha, Excl. Radon And U, 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.