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Tap water quality report

Parker, SD

EPA monitoring detected 11 contaminants across the 2 water suppliers serving Parker. 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.

2
water suppliers
5,275
people served
11
contaminants found
South Dakota rankings Lead in South Dakota PFAS in South Dakota

What was found in Parker'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
460 µg/L 12%
of the EPA limit 4000 µg/L
Main supplier: TM RURAL WATER DISTRICT · 4,250 people · 2019
1/2 SYR4
Copper
60.5 µg/L 4.7%
of the EPA limit 1300 µg/L
Main supplier: TM RURAL WATER DISTRICT · 4,250 people · 2019
Highest in the city: 110.5 µg/L — PARKER · 1,025 people · 2017
2/2 SYR4
Lithium
95 µg/L
No EPA limit set
Main supplier: TM RURAL WATER DISTRICT · 4,250 people · 2025
1/2 UCMR-5
TTHM
34.095 µg/L 43%
of the EPA limit 80 µg/L
Main supplier: TM RURAL WATER DISTRICT · 4,250 people · 2019
Highest in the city: 38.715 µg/L — PARKER · 1,025 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
17.865 µg/L 30%
of the EPA limit 60 µg/L
Main supplier: TM RURAL WATER DISTRICT · 4,250 people · 2019
Highest in the city: 19.045 µg/L — PARKER · 1,025 people · 2019
2/2 SYR4
Barium
14.5 µg/L 0.7%
of the EPA limit 2000 µg/L
Main supplier: TM RURAL WATER DISTRICT · 4,250 people · 2014
1/2 SYR4
Lead
1.41 µg/L 9.4%
of the EPA limit 15 µg/L
Main supplier: TM RURAL WATER DISTRICT · 4,250 people · 2019
Highest in the city: 2.775 µg/L — PARKER · 1,025 people · 2017
2/2 SYR4
Arsenic
2 µg/L 20%
of the EPA limit 10 µg/L
Main supplier: TM RURAL WATER DISTRICT · 4,250 people · 2014
1/2 SYR4
Selenium
1.6 µg/L 3.2%
of the EPA limit 50 µg/L
Main supplier: TM RURAL WATER DISTRICT · 4,250 people · 2014
1/2 SYR4
Chromium
1.1 µg/L 1.1%
of the EPA limit 100 µg/L
Main supplier: TM RURAL WATER DISTRICT · 4,250 people · 2014
1/2 SYR4
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
Main supplier: TM RURAL WATER DISTRICT · 4,250 people · 2025
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. 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 Parker

SupplierPopulation served
TM RURAL WATER DISTRICT 4,250
PARKER 1,025

Frequently asked questions about Parker tap water

Is Parker tap water safe to drink?

EPA testing detected 11 contaminants in the water serving Parker. 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 Parker?

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

What contaminants are in Parker's water?

The contaminants EPA monitoring detected in Parker include Fluoride, Copper, Lithium, TTHM, Total Haloacetic Acids (HAA5). 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.