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Tap water quality report

Mid-Dakota Rural Water

EPA monitoring tested this supplier for 51 contaminants and detected 14. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

51
contaminants tested
14
detected
11,833
people served
0
health-based violations
South Dakota rankingsLead in South DakotaPFAS in South Dakota
Water source
Surface water
Ownership
Private
Counties served
Hand, Hughes, Hyde, Sully

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

0
health-based violations
3
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2000-01-01 → 2000-03-31
MR Monitoring Resolved 2000-01-01 → 2000-03-31
MR Monitoring Resolved 2000-01-01 → 2000-03-31

Other contaminants detected

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 this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
733 µg/L 56%
of the EPA limit 1300 µg/L
worst single sample: 1000 µg/L
90/90 SYR4 2013–2019
Lead
3.52 µg/L 23%
of the EPA limit 15 µg/L
worst single sample: 7.5 µg/L
90/90 SYR4 2013–2019
TTHM
71.945 µg/L 90%
of the EPA limit 80 µg/L
worst single sample: 89.2 µg/L
90/90 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
48.6 µg/L 81%
of the EPA limit 60 µg/L
worst single sample: 55 µg/L
90/90 SYR4 2012–2019
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 10/10 LCR 2025
Lithium
60 µg/L
No EPA limit set
 4/4 UCMR-5 2023
Nitrate
300 µg/L 3%
of the EPA limit 10000 µg/L
 2/6 SYR4 2017–2019
Antimony, Total
0.4000 µg/L 6.7%
of the EPA limit 6 µg/L
 1/1 SYR4 2013
Arsenic
3 µg/L 30%
of the EPA limit 10 µg/L
 1/1 SYR4 2013
Barium
42.4 µg/L 2.1%
of the EPA limit 2000 µg/L
 1/1 SYR4 2013
Chromium
1.6 µg/L 1.6%
of the EPA limit 100 µg/L
 1/1 SYR4 2013
Fluoride
450 µg/L 11%
of the EPA limit 4000 µg/L
 1/1 SYR4 2019
Gross Alpha, Excl. Radon And U
3.8 pCi/L 25%
of the EPA limit 15 pCi/L
 1/1 SYR4 2016
Selenium
1.4 µg/L 2.8%
of the EPA limit 50 µg/L
 1/1 SYR4 2013
37 contaminants tested, none detected
11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaBeryllium, TotalCadmiumCombined Radium (-226 And -228)Combined UraniumGross Beta Particle ActivityHfpo-DaMercuryNetfosaaNfdhaNmefosaaNitritePfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaThallium, Total

Utility contact

Contact
LORIN JOHNSON
Phone
6058533159
Email
[email protected]

Frequently asked questions about Mid-Dakota Rural Water

Is Mid-Dakota Rural Water tap water safe to drink?

EPA monitoring detected 14 contaminants in Mid-Dakota Rural Water's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Mid-Dakota Rural Water's water?

EPA monitoring detected Copper, Lead, TTHM, Total Haloacetic Acids (HAA5), Lead, and others. The full list with the level and data source for each is above.

How many people does Mid-Dakota Rural Water serve?

Mid-Dakota Rural Water reports serving 11,833 people in South Dakota, per its EPA record.

Has Mid-Dakota Rural Water had any water quality violations?

The EPA has 3 violations on file for Mid-Dakota Rural Water, of which 0 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

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.