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Tap water quality report

Murdo, SD

EPA monitoring detected 11 contaminants across the 4 water suppliers serving Murdo. 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.

4
water suppliers
8,857
people served
11
contaminants found
South Dakota rankings Lead in South Dakota PFAS in South Dakota

What was found in Murdo'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
2725 µg/L 68%
of the EPA limit 4000 µg/L
Highest in the city: WR/LJ - CREIGHTON PROJECT · 1,170 people · 2019
1/4 SYR4
Copper
355 µg/L 27%
of the EPA limit 1300 µg/L
Main supplier: WR/LJ - MNI WICONI · 4,720 people · 2019
3/4 SYR4
Lithium
80 µg/L
No EPA limit set
Main supplier: WR/LJ - MNI WICONI · 4,720 people · 2023
1/4 UCMR-5
TTHM
55.665 µg/L 70%
of the EPA limit 80 µg/L
Main supplier: WR/LJ - MNI WICONI · 4,720 people · 2019
4/4 SYR4
Total Haloacetic Acids (HAA5)
39.37 µg/L 66%
of the EPA limit 60 µg/L
Main supplier: WR/LJ - MNI WICONI · 4,720 people · 2019
Highest in the city: 41.84 µg/L — MURDO · 475 people · 2019
4/4 SYR4
Barium
25.79 µg/L 1.3%
of the EPA limit 2000 µg/L
Highest in the city: WR/LJ - CREIGHTON PROJECT · 1,170 people · 2013
1/4 SYR4
Lead
2.025 µg/L 13%
of the EPA limit 15 µg/L
Main supplier: WR/LJ - MNI WICONI · 4,720 people · 2019
Highest in the city: 8.3 µg/L — MURDO · 475 people · 2017
3/4 SYR4
Chromium
6.79 µg/L 6.8%
of the EPA limit 100 µg/L
Highest in the city: WR/LJ - CREIGHTON PROJECT · 1,170 people · 2013
1/4 SYR4
Selenium
0.5000 µg/L 1%
of the EPA limit 50 µg/L
Highest in the city: WR/LJ - CREIGHTON PROJECT · 1,170 people · 2013
1/4 SYR4
Pfba
0.0081 µg/L
No EPA limit set
Main supplier: WR/LJ - MNI WICONI · 4,720 people · 2023
1/4 UCMR-5
Lead
0.0030 mg/L 20%
of the EPA limit 0.0150 mg/L
Main supplier: WR/LJ - MNI WICONI · 4,720 people · 2025
Highest in the city: 0.0060 mg/L — MURDO · 475 people · 2023
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 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 Murdo

SupplierPopulation served
WR/LJ - MNI WICONI 4,720
WR/LJ - NORTH STANLEY COUNTY 2,492
WR/LJ - CREIGHTON PROJECT 1,170
MURDO 475

Frequently asked questions about Murdo tap water

Is Murdo tap water safe to drink?

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

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

What contaminants are in Murdo's water?

The contaminants EPA monitoring detected in Murdo 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.