D20/100
DE SMET — Water Quality Report 2026
Serving 1,056 people · South Dakota
Water Source
Groundwater
County
—
System ID
SD4600059
Violations
53
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 2020.
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 DE SMET
Is DE SMET water safe to drink?
DE SMET water receives a grade of D (20/100), which is considered poor. 0 contaminant(s) exceed EPA legal limits and 53 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has DE SMET detected?
1 contaminants were tested in DE SMET's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does DE SMET have any EPA violations?
Yes, DE SMET has 53 EPA violation(s) on record, with the most recent in 2020. Violation types include TT, MR, MCL. 6 are health-based violations.
How many people does DE SMET serve?
DE SMET serves approximately 1,056 people, South Dakota. The system provides water to 1 community: De Smet.
What type of water does DE SMET provide?
DE SMET sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is SD4600059.
How does DE SMET compare to other utilities in South Dakota?
DE SMET scores 20/100 with a grade of D (poor). This score suggests significant water quality concerns relative to other utilities. Visit our South Dakota state page for a full comparison of water systems.