Tap WaterIndex

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Tap water quality report

Clear Lake

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

5
contaminants tested
5
detected
1,218
people served
0
health-based violations
South Dakota rankingsLead in South DakotaPFAS in South Dakota
Water source
GWP
Ownership
Local government
Counties served
Deuel

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
9
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2005-10-01
MR Monitoring Resolved 2005-10-01
MR Monitoring Resolved 2005-10-01
MR Monitoring Resolved 2005-10-01
MR Monitoring Resolved 1998-01-01 → 1998-06-30
MR Monitoring Resolved 1998-01-01 → 1998-06-30
MR Monitoring Resolved 1998-01-01 → 1998-06-30
MR Monitoring Archived 1976-07-01 → 1980-06-30
MR Monitoring Archived 1976-07-01 → 1980-06-30

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 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
888.5 µg/L 68%
of the EPA limit 1300 µg/L
worst single sample: 1620 µg/L
20/20 SYR4 2014–2017
Lead
8.205 µg/L 55%
of the EPA limit 15 µg/L
worst single sample: 10.2 µg/L
20/20 SYR4 2014–2017
Lead
0.0080 mg/L 53%
of the EPA limit 0.0150 mg/L
 15/15 LCR 2023
TTHM
11.65 µg/L 15%
of the EPA limit 80 µg/L
worst single sample: 12 µg/L
8/8 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
5.3705 µg/L 9%
of the EPA limit 60 µg/L
worst single sample: 5.5 µg/L
8/8 SYR4 2013–2019

Utility contact

Contact
ELLIOTT FURMAN
Phone
6058742121
Email
[email protected]

Frequently asked questions about Clear Lake

Is Clear Lake tap water safe to drink?

EPA monitoring detected 5 contaminants in Clear Lake'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 Clear Lake's water?

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

How many people does Clear Lake serve?

Clear Lake reports serving 1,218 people in South Dakota, per its EPA record.

Has Clear Lake had any water quality violations?

The EPA has 9 violations on file for Clear Lake, 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.