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WILLOW LAKE

PWSID: SD4600370 · Willow Lake, SD · Serves 255 people

Health Violations

WILLOW LAKE has 7 health-based violations out of 7 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed.

Population Served
255
Total Violations
7
Health Violations
7
Source Type
Groundwater

WILLOW LAKE (PWSID SD4600370) is a cws water system drawing from a groundwater source, regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act. It serves approximately 255 people in Willow Lake, SD, and is subject to primacy enforcement by the South Dakota drinking-water program.

The system's federal compliance record contains 7 total violations, with 7 classified as health-based (MCL exceedances or treatment-technique failures). 1 distinct contaminant has been cited, including Chlorine. Recorded violations span 2006–2020.

A historical violation does not necessarily describe current water quality, systems must notify customers and remediate, and monitoring-type violations often reflect reporting lapses rather than contamination. The most authoritative real-time source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the South Dakota state drinking-water program's public portal.

System Details

EPA ID (PWSID)
SD4600370
System Type
CWS
Water Source
Groundwater
Location
Willow Lake, SD
Population Served
255
Health Violations
Yes (7)

What contaminants are in this water system?

Contaminant Violations Health-Based
Chlorine 7 7

Violation History (7)

Contaminant Health Date
Chlorine Yes Nov 23, 2020
Chlorine Yes Nov 23, 2020
Chlorine Yes Nov 23, 2020
Chlorine Yes Feb 1, 2015
Chlorine Yes Feb 1, 2015
Chlorine Yes Feb 1, 2011
Chlorine Yes Feb 23, 2006

Frequently Asked Questions

Is WILLOW LAKE water safe to drink?
WILLOW LAKE has 7 health-based violations out of 7 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed. The system uses groundwater water as its source.
How many people does WILLOW LAKE serve?
WILLOW LAKE serves 255 people in Willow Lake, SD. It is classified as a CWS water system.
What violations does WILLOW LAKE have?
WILLOW LAKE has 7 total violations on record spanning 2006–2020. 7 are health-based violations involving contaminants exceeding EPA limits.
What contaminants have been found in WILLOW LAKE water?
Violations have been recorded for 1 contaminant. The most frequent: Chlorine.

Nearby Water Systems

CLARK RURAL WATER SYSTEM
Clark · 2,325 served
Clean
CLARK
Clark · 1,148 served
2 viol.
CLARK RURAL WATER-KAMPESKA
Clark · 602 served
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GARDEN CITY
Garden City · 33 served
15 viol.

Explore More

South Dakota Water Systems → All States → Contaminants →

About This Data

Water system data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations that may pose a direct risk to public health. Violation records may span multiple years.

Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services U.S. Environmental Protection Agency, SDWIS Federal Reporting Services

Read our methodology - how this data is sourced, computed, and verified.

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