C59/100
CLARK RURAL WATER SYSTEM — Water Quality Report 2026
Serving 2,325 people · South Dakota
Water Source
Groundwater
County
—
System ID
SD4600881
Violations
34
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2011.
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 CLARK RURAL WATER SYSTEM
Is CLARK RURAL WATER SYSTEM water safe to drink?
CLARK RURAL WATER SYSTEM water receives a grade of C (59/100), which is considered fair. 0 contaminant(s) exceed EPA legal limits and 34 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has CLARK RURAL WATER SYSTEM detected?
1 contaminants were tested in CLARK RURAL WATER SYSTEM's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does CLARK RURAL WATER SYSTEM have any EPA violations?
Yes, CLARK RURAL WATER SYSTEM has 34 EPA violation(s) on record, with the most recent in 2011. Violation types include Other, TT, MR. 1 are health-based violations.
How many people does CLARK RURAL WATER SYSTEM serve?
CLARK RURAL WATER SYSTEM serves approximately 2,325 people, South Dakota. The system provides water to 2 communities: Clark, Florence.
What type of water does CLARK RURAL WATER SYSTEM provide?
CLARK RURAL WATER SYSTEM sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is SD4600881.
How does CLARK RURAL WATER SYSTEM compare to other utilities in South Dakota?
CLARK RURAL WATER SYSTEM scores 59/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our South Dakota state page for a full comparison of water systems.