A93/100
CLEAR LAKE — Water Quality Report 2026
Serving 1,218 people · South Dakota
Water Source
Purchased Groundwater
County
—
System ID
SD4600092
Violations
4
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.008 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2005.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About CLEAR LAKE
Is CLEAR LAKE water safe to drink?
CLEAR LAKE water receives a grade of A (93/100), which is considered excellent. Out of 1 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has CLEAR LAKE detected?
1 contaminants were tested in CLEAR LAKE's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does CLEAR LAKE have any EPA violations?
Yes, CLEAR LAKE has 4 EPA violation(s) on record, with the most recent in 2005. Violation types include MR.
How many people does CLEAR LAKE serve?
CLEAR LAKE serves approximately 1,218 people, South Dakota. The system provides water to 1 community: Clear Lake.
What type of water does CLEAR LAKE provide?
CLEAR LAKE sources its water from purchased groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is SD4600092.
How does CLEAR LAKE compare to other utilities in South Dakota?
CLEAR LAKE scores 93/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our South Dakota state page for a full comparison of water systems.