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Tap water quality report

Clark Rural Water

EPA monitoring tested this supplier for 20 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

20
contaminants tested
10
detected
2,325
people served
2
health-based violations
South Dakota rankingsLead in South DakotaPFAS in South Dakota
Water source
Ground water
Ownership
Private
Counties served
Clark, Codington, Day, Hamlin

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.

2
health-based violations
68
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2004-01-01 → 2004-12-31
TT Health-based Resolved 2004-01-01 → 2004-12-31
Other Monitoring Resolved 2011-12-19
Other Monitoring Resolved 2011-12-19
MR Monitoring Resolved 1996-01-01 → 1998-12-31
MR Monitoring Resolved 1996-01-01 → 1998-12-31
MR Monitoring Resolved 1996-01-01 → 1998-12-31
MR Monitoring Resolved 1996-01-01 → 1998-12-31
MR Monitoring Resolved 1996-01-01 → 1998-12-31
MR Monitoring Resolved 1996-01-01 → 1998-12-31

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
293 µg/L 23%
of the EPA limit 1300 µg/L
worst single sample: 420 µg/L
30/30 SYR4 2013–2019
Lead
2.365 µg/L 16%
of the EPA limit 15 µg/L
worst single sample: 3.2 µg/L
30/30 SYR4 2013–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2025
TTHM
41.925 µg/L 52%
of the EPA limit 80 µg/L
worst single sample: 42.1 µg/L
8/8 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
14.35 µg/L 24%
of the EPA limit 60 µg/L
worst single sample: 16.1 µg/L
8/8 SYR4 2013–2019
Nitrate
500 µg/L 5%
of the EPA limit 10000 µg/L
 6/6 SYR4 2017–2019
Arsenic
2 µg/L 20%
of the EPA limit 10 µg/L
 1/1 SYR4 2013
Barium
8.6 µg/L 0.4%
of the EPA limit 2000 µg/L
 1/1 SYR4 2013
Chromium
0.7000 µg/L 0.7%
of the EPA limit 100 µg/L
 1/1 SYR4 2013
Selenium
0.7000 µg/L 1.4%
of the EPA limit 50 µg/L
 1/1 SYR4 2013
10 contaminants tested, none detected
Antimony, TotalBeryllium, TotalCadmiumCombined Radium (-226 And -228)Combined UraniumGross Alpha, Excl. Radon And UGross Beta Particle ActivityMercuryNitriteThallium, Total

Utility contact

Contact
TERRY KAUFMAN
Phone
6055325201
Email
[email protected]

Frequently asked questions about Clark Rural Water

Is Clark Rural Water tap water safe to drink?

EPA monitoring detected 10 contaminants in Clark 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 Clark Rural Water's water?

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

How many people does Clark Rural Water serve?

Clark Rural Water reports serving 2,325 people in South Dakota, per its EPA record.

Has Clark Rural Water had any water quality violations?

The EPA has 68 violations on file for Clark Rural Water, of which 2 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.