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Tap water quality report

Lewis and Clark Regional Water Syste

EPA monitoring tested this supplier for 16 contaminants and detected 6. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

16
contaminants tested
6
detected
0
people served
0
health-based violations
South Dakota rankingsLead in South DakotaPFAS in South Dakota
Water source
Ground water
Ownership
Private
Counties served
Minnehaha

Compliance record

No violations on file. The EPA has no formal drinking-water violations recorded for this supplier.

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
700 µg/L 7%
of the EPA limit 10000 µg/L
 2/2 SYR4 2019
Arsenic
4 µg/L 40%
of the EPA limit 10 µg/L
 1/1 SYR4 2019
Barium
15.1 µg/L 0.8%
of the EPA limit 2000 µg/L
 1/1 SYR4 2019
Chromium
0.5000 µg/L 0.5%
of the EPA limit 100 µg/L
 1/1 SYR4 2019
Fluoride
700 µg/L 18%
of the EPA limit 4000 µg/L
 1/1 SYR4 2016
Mercury
0.1300 µg/L 6.5%
of the EPA limit 2 µg/L
 1/1 SYR4 2019
10 contaminants tested, none detected
Antimony, TotalBeryllium, TotalCadmiumCombined Radium (-226 And -228)Combined UraniumGross Alpha, Excl. Radon And UGross Beta Particle ActivityNitriteSeleniumThallium, Total

Utility contact

Contact
JIM AUEN
Phone
6056248700
Email
jauen@lcrws.org

Frequently asked questions about Lewis and Clark Regional Water Syste

Is Lewis and Clark Regional Water Syste tap water safe to drink?

EPA monitoring detected 6 contaminants in Lewis and Clark Regional Water Syste'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 Lewis and Clark Regional Water Syste's water?

EPA monitoring detected Nitrate, Arsenic, Barium, Chromium, Fluoride, and others. The full list with the level and data source for each is above.

How many people does Lewis and Clark Regional Water Syste serve?

Lewis and Clark Regional Water Syste reports serving 0 people in South Dakota, per its EPA record.

Has Lewis and Clark Regional Water Syste had any water quality violations?

The EPA has no formal drinking-water violations on file for Lewis and Clark Regional Water Syste.

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.