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Tap water quality report

Long Lake Colony

EPA monitoring tested this supplier for 19 contaminants and detected 5. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

19
contaminants tested
5
detected
100
people served
18
health-based violations
South Dakota rankingsLead in South DakotaPFAS in South Dakota
Water source
Ground water
Ownership
Private
Counties served
Brown

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.

18
health-based violations
229
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2004-01-01 → 2004-01-31
MCL Health-based Resolved 2004-01-01 → 2004-01-31
MCL Health-based Resolved 2004-01-01 → 2004-01-31
MCL Health-based Resolved 2003-04-01 → 2003-04-30
MCL Health-based Resolved 2003-04-01 → 2003-04-30
MCL Health-based Resolved 2003-04-01 → 2003-04-30
MCL Health-based Resolved 2000-10-01 → 2000-10-31
MCL Health-based Resolved 2000-10-01 → 2000-10-31
MCL Health-based Resolved 2000-10-01 → 2000-10-31
MCL Health-based Resolved 1997-06-01 → 1997-06-30

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
50 µg/L 3.8%
of the EPA limit 1300 µg/L
 15/15 SYR4 2013–2019
Lead
11.6 µg/L 77%
of the EPA limit 15 µg/L
 15/15 SYR4 2013–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2025
Barium
21.7 µg/L 1.1%
of the EPA limit 2000 µg/L
 1/1 SYR4 2019
Fluoride
2600 µg/L 65%
of the EPA limit 4000 µg/L
 1/1 SYR4 2019
14 contaminants tested, none detected
Antimony, TotalArsenicBeryllium, TotalCadmiumChromiumCombined Radium (-226 And -228)Combined UraniumGross Alpha, Excl. Radon And UGross Beta Particle ActivityMercuryNitrateNitriteSeleniumThallium, Total

Utility contact

Contact
JOHN WALDNER
Phone
6054393410
Email
longlakellc@valleytel.net

Frequently asked questions about Long Lake Colony

Is Long Lake Colony tap water safe to drink?

EPA monitoring detected 5 contaminants in Long Lake 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 Long Lake Colony's water?

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

How many people does Long Lake Colony serve?

Long Lake Colony reports serving 100 people in South Dakota, per its EPA record.

Has Long Lake Colony had any water quality violations?

The EPA has 229 violations on file for Long Lake Colony, of which 18 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.