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Tap water quality report

Beresford, SD

EPA monitoring detected 9 contaminants across the 3 water suppliers serving Beresford. 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
7,699
people served
9
contaminants found
South Dakota rankings Lead in South Dakota PFAS in South Dakota

What was found in Beresford'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
1450 µg/L 36%
of the EPA limit 4000 µg/L
Main supplier: SOUTH LINCOLN RURAL WATER SYSTEM · 5,250 people · 2019
1/3 SYR4
Copper
1005 µg/L 77%
of the EPA limit 1300 µg/L
Main supplier: SOUTH LINCOLN RURAL WATER SYSTEM · 5,250 people · 2019
3/3 SYR4
Lithium
105 µg/L
No EPA limit set
Main supplier: SOUTH LINCOLN RURAL WATER SYSTEM · 5,250 people · 2024
1/3 UCMR-5
TTHM
0.7027 µg/L 0.9%
of the EPA limit 80 µg/L
Main supplier: SOUTH LINCOLN RURAL WATER SYSTEM · 5,250 people · 2019
Highest in the city: 39.12 µg/L — BERESFORD · 2,359 people · 2019
2/3 SYR4
Barium
24.3 µg/L 1.2%
of the EPA limit 2000 µg/L
Main supplier: SOUTH LINCOLN RURAL WATER SYSTEM · 5,250 people · 2018
1/3 SYR4
Total Haloacetic Acids (HAA5)
1.29 µg/L 2.2%
of the EPA limit 60 µg/L
Main supplier: SOUTH LINCOLN RURAL WATER SYSTEM · 5,250 people · 2019
Highest in the city: 17.56 µg/L — BERESFORD · 2,359 people · 2019
2/3 SYR4
Gross Alpha, Excl. Radon And U
7.4 pCi/L 49%
of the EPA limit 15 pCi/L
Main supplier: SOUTH LINCOLN RURAL WATER SYSTEM · 5,250 people · 2019
1/3 SYR4
Lead
5.41 µg/L 36%
of the EPA limit 15 µg/L
Main supplier: SOUTH LINCOLN RURAL WATER SYSTEM · 5,250 people · 2019
3/3 SYR4
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
Main supplier: SOUTH LINCOLN RURAL WATER SYSTEM · 5,250 people · 2025
Highest in the city: 0.0040 mg/L — BERESFORD · 2,359 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 Beresford

SupplierPopulation served
SOUTH LINCOLN RURAL WATER SYSTEM 5,250
BERESFORD 2,359
HUTTERVILLE COLONY SOUTH DAKOTA INC 90

Frequently asked questions about Beresford tap water

Is Beresford tap water safe to drink?

EPA testing detected 9 contaminants in the water serving Beresford. 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 Beresford?

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

What contaminants are in Beresford's water?

The contaminants EPA monitoring detected in Beresford include Fluoride, Copper, Lithium, TTHM, Barium. 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.