Tap WaterIndex

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Tap water quality report

White Rock Colony

EPA monitoring tested this supplier for 19 contaminants and detected 7. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

19
contaminants tested
7
detected
108
people served
44
health-based violations
South Dakota rankingsLead in South DakotaPFAS in South Dakota
Water source
Ground water
Ownership
Private
Counties served
Roberts

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.

44
health-based violations
523
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2008-01-01 → 2008-03-31
MCL Health-based Resolved 2008-01-01 → 2008-03-31
MCL Health-based Resolved 2008-01-01 → 2008-03-31
MCL Health-based Resolved 2007-10-01 → 2007-12-31
MCL Health-based Resolved 2007-10-01 → 2007-12-31
MCL Health-based Resolved 2007-10-01 → 2007-12-31

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 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
Copper
170 µg/L 13%
of the EPA limit 1300 µg/L
 15/15 SYR4 2014–2019
Lead
0.4000 µg/L 2.7%
of the EPA limit 15 µg/L
 15/15 SYR4 2014–2019
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2025
Barium
10.5 µg/L 0.5%
of the EPA limit 2000 µg/L
 1/1 SYR4 2013
Chromium
0.3000 µg/L 0.3%
of the EPA limit 100 µg/L
 1/1 SYR4 2013
Fluoride
200 µg/L 5%
of the EPA limit 4000 µg/L
 1/1 SYR4 2013
Gross Alpha, Excl. Radon And U
7.4 pCi/L 49%
of the EPA limit 15 pCi/L
 1/1 SYR4 2016
12 contaminants tested, none detected
Antimony, TotalArsenicBeryllium, TotalCadmiumCombined Radium (-226 And -228)Combined UraniumGross Beta Particle ActivityMercuryNitrateNitriteSeleniumThallium, Total

Utility contact

Contact
ELIE WALDNER
Phone
6055374871
Email
wrcelectric@gmail.com

Frequently asked questions about White Rock Colony

Is White Rock Colony tap water safe to drink?

EPA monitoring detected 7 contaminants in White Rock Colony'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 White Rock Colony's water?

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

How many people does White Rock Colony serve?

White Rock Colony reports serving 108 people in South Dakota, per its EPA record.

Has White Rock Colony had any water quality violations?

The EPA has 523 violations on file for White Rock Colony, of which 44 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.