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Tap water quality report

ZIP 57790 — Wall, SD

EPA monitoring across the 2 water suppliers serving ZIP 57790 in Wall, SD detected 12 contaminants. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier below, with the EPA limit for each.

2
water suppliers
783
people served
12
contaminants found

What was found in ZIP 57790

The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Fluoride
3000 µg/L 75%
of the EPA limit 4000 µg/L
Main supplier: WALL · 699 people · 2019
2/2 SYR4
Nitrate
558 µg/L 5.6%
of the EPA limit 10000 µg/L
Main supplier: WALL · 699 people · 2019
Highest in the ZIP: 2780 µg/L — WASTA · 84 people · 2019
2/2 SYR4
Copper
148.6 µg/L 11%
of the EPA limit 1300 µg/L
Main supplier: WALL · 699 people · 2018
Highest in the ZIP: 675 µg/L — WASTA · 84 people · 2018
2/2 SYR4
Lithium
238 µg/L
No EPA limit set
Main supplier: WALL · 699 people · 2024
1/2 UCMR-5
Barium
8.2 µg/L 0.4%
of the EPA limit 2000 µg/L
Main supplier: WALL · 699 people · 2012
Highest in the ZIP: 80 µg/L — WASTA · 84 people · 2012
2/2 SYR4
TTHM
21.535 µg/L 27%
of the EPA limit 80 µg/L
Highest in the ZIP: WASTA · 84 people · 2018
1/2 SYR4
Selenium
12 µg/L 24%
of the EPA limit 50 µg/L
Highest in the ZIP: WASTA · 84 people · 2012
1/2 SYR4
Gross Alpha, Excl. Radon And U
9.34 pCi/L 62%
of the EPA limit 15 pCi/L
Highest in the ZIP: WASTA · 84 people · 2018
1/2 SYR4
Total Haloacetic Acids (HAA5)
6.04 µg/L 10%
of the EPA limit 60 µg/L
Highest in the ZIP: WASTA · 84 people · 2018
1/2 SYR4
Lead
3.91 µg/L 26%
of the EPA limit 15 µg/L
Main supplier: WALL · 699 people · 2018
Highest in the ZIP: 5.6 µg/L — WASTA · 84 people · 2018
2/2 SYR4
Chromium
0.3000 µg/L 0.3%
of the EPA limit 100 µg/L
Main supplier: WALL · 699 people · 2012
1/2 SYR4
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
Main supplier: WALL · 699 people · 2024
Highest in the ZIP: 0.0020 mg/L — WASTA · 84 people · 2024
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.

Water suppliers serving ZIP 57790

SupplierStatePopulation served
WALL SD 699
WASTA SD 84

Frequently asked questions about ZIP 57790 tap water

Is the tap water in ZIP 57790 safe to drink?

EPA testing detected 12 contaminants across the water suppliers serving ZIP 57790. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.

Which water suppliers serve ZIP 57790?

2 public water suppliers report EPA drinking-water monitoring for ZIP 57790. Each is listed above with its population served.

What contaminants are in ZIP 57790's water?

EPA monitoring detected Fluoride, Nitrate, Copper, Lithium, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.