A89/100
WATERTOWN MUNICIPAL UTILITIES — Water Quality Report 2026
Serving 23,230 people · South Dakota
Water Source
Groundwater
County
—
System ID
SD4600356
Violations
4
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2016.
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 WATERTOWN MUNICIPAL UTILITIES
Is WATERTOWN MUNICIPAL UTILITIES water safe to drink?
WATERTOWN MUNICIPAL UTILITIES water receives a grade of A (89/100), which is considered excellent. Out of 66 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has WATERTOWN MUNICIPAL UTILITIES detected?
66 contaminants were tested in WATERTOWN MUNICIPAL UTILITIES's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does WATERTOWN MUNICIPAL UTILITIES have any EPA violations?
Yes, WATERTOWN MUNICIPAL UTILITIES has 4 EPA violation(s) on record, with the most recent in 2016. Violation types include MCL, MR. 1 are health-based violations.
How many people does WATERTOWN MUNICIPAL UTILITIES serve?
WATERTOWN MUNICIPAL UTILITIES serves approximately 23,230 people, South Dakota. The system provides water to 1 community: Watertown.
What type of water does WATERTOWN MUNICIPAL UTILITIES provide?
WATERTOWN MUNICIPAL UTILITIES sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is SD4600356.
How does WATERTOWN MUNICIPAL UTILITIES compare to other utilities in South Dakota?
WATERTOWN MUNICIPAL UTILITIES scores 89/100 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.