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Tap water quality report

Lake Andes, SD

EPA monitoring detected 13 contaminants across the 3 water suppliers serving Lake Andes. 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.

3
water suppliers
7,076
people served
13
contaminants found
South Dakota rankings Lead in South Dakota PFAS in South Dakota

What was found in Lake Andes'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
Fluoride
439.5 µg/L 11%
of the EPA limit 4000 µg/L
Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2019
Highest in the city: 1100 µg/L — LAKEVIEW COLONY · 118 people · 2014
2/3 SYR4
Nitrate
400 µg/L 4%
of the EPA limit 10000 µg/L
Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2019
1/3 SYR4
Copper
181 µg/L 14%
of the EPA limit 1300 µg/L
Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2018
3/3 SYR4
TTHM
75.065 µg/L 94%
of the EPA limit 80 µg/L
Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2019
2/3 SYR4
Lithium
61.5 µg/L
No EPA limit set
Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2025
1/3 UCMR-5
Total Haloacetic Acids (HAA5)
59.91 µg/L 100%
of the EPA limit 60 µg/L
Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2019
2/3 SYR4
Barium
41.2 µg/L 2.1%
of the EPA limit 2000 µg/L
Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2012
2/3 SYR4
Lead
3.505 µg/L 23%
of the EPA limit 15 µg/L
Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2018
Highest in the city: 12.45 µg/L — LAKE ANDES · 710 people · 2017
3/3 SYR4
Arsenic
2 µg/L 20%
of the EPA limit 10 µg/L
Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2012
1/3 SYR4
Selenium
1.685 µg/L 3.4%
of the EPA limit 50 µg/L
Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2012
2/3 SYR4
Chromium
0.9000 µg/L 0.9%
of the EPA limit 100 µg/L
Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2012
1/3 SYR4
Antimony, Total
0.4950 µg/L 8.3%
of the EPA limit 6 µg/L
Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2012
1/3 SYR4
Lead
0.0040 mg/L 27%
of the EPA limit 0.0150 mg/L
Main supplier: RANDALL COMMUNITY WATER DISTRICT · 6,248 people · 2024
3/3 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 Lake Andes

SupplierPopulation served
RANDALL COMMUNITY WATER DISTRICT 6,248
LAKE ANDES 710
LAKEVIEW COLONY 118

Frequently asked questions about Lake Andes tap water

Is Lake Andes tap water safe to drink?

EPA testing detected 13 contaminants in the water serving Lake Andes. 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 Lake Andes?

3 public water suppliers report drinking-water monitoring for Lake Andes, South Dakota to the EPA. Each is listed above with its population served.

What contaminants are in Lake Andes's water?

The contaminants EPA monitoring detected in Lake Andes include Fluoride, Nitrate, Copper, TTHM, Lithium. 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.