Tapcensus

Hexachlorocyclopentadiene violations in Michigan

28 active public water systems in Michigan had a Hexachlorocyclopentadiene violation in the past three years, 1 of them still unresolved. What Hexachlorocyclopentadiene is and why it matters.

Health effects: Chronic exposure to hexachlorocyclopentadiene is associated with kidney and stomach damage in animal studies. EPA has not classified it as a human carcinogen based on available data. Short-term high-level exposure may cause irritation of mucous membranes. Long-term exposure above the MCL is the primary concern for public water system violations.

Systems with a Hexachlorocyclopentadiene violation

Unresolved first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Gun Lake Mobile Home Community
Barry County
148 2 0
Jbs Packerland
Allegan County
1,500 3 0
Gateway Plaza Hart
Oceana County
1,103 7 0
Boyne Mountain Resort
Charlevoix County
950 1 0
Lake City, City of
Lake City · Missaukee County
836 6 1
Goodrich Oaktree Elementary
Genesee County
600 2 0
Kaleva Norman Dickson Schools
Manistee County
557 3 0
Evergreen Resort
Wexford County
500 4 1
Kaleva, Village of
Kaleva · Manistee County
464 9 2
Empire, Village of
Empire · Leelanau County
400 7 0
3m's Realty-Thompson Road II
Genesee County
325 5 0
Chatham
Chatham · Alger County
300 6 0
Franklin Township
Ripley · Houghton County
300 6 0
Michigan Food Processors Co-Op
Mason County
187 6 1
Arbor View
Branch County
100 5 1
Guernsey Lake Mobile Home Community
Barry County
100 6 2
Woodruff Lake Cooperative
Livingston County
95 8 2
MY Place at Twin Valley
Calhoun County
88 8 1
Oxford Village Condominiums
Oakland County
80 11 2
Cherry Creek Village
Marquette County
50 5 0
Kids Corner Creative Learning Center
Genesee County
50 4 2
Hale Creek Manor
Iosco County
43 3 0
Jamieson Nursing Home
Alcona County
39 5 0
Oak Leaf Manor
Lewiston · Montmorency County
36 7 0
Ridgeway
Macomb County
31 7 0
Country Meadows School
Missaukee County
30 6 1
Lakeside Apartments
Oakland County
30 3 1
Lisd Seed House
Lenawee County
25 5 0
About this data

A system is counted once if any of its violations in the past three years involved Hexachlorocyclopentadiene, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Hexachlorocyclopentadiene alone.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Michigan records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.