Tapcensus

Methoxychlor violations in Missouri

16 active public water systems in Missouri had a Methoxychlor violation in the past three years, 1 of them in the latest quarter of EPA's data. What Methoxychlor is and why it matters.

Health effects: Chronic exposure to methoxychlor is associated with reproductive and endocrine disruption — it acts as an estrogen mimic and can interfere with hormone signaling. Liver and kidney effects have been observed in animal studies. Developing fetuses, infants, and individuals with hormonal conditions may be most susceptible.

Systems with a Methoxychlor violation

Latest quarter first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Clarkton PWS
Clarkton · Dunklin County
1,124 7 0
Ozark Correctional Center
Fordland · Webster County
900 6 0
Van Buren PWS
Van Buren · Carter County
819 3 1
Ellington PWS
Ellington · Reynolds County
790 4 1
S K & M Water and Sewer Company
Perry County
750 7 0
Greenville PWS
Greenville · Wayne County
497 1 0
Fisk PWS
Fisk · Butler County
342 8 0
Mill Spring
Frohna · Perry County
250 5 1
Clear Water Acres Subd
Blue Eye · Taney County
175 2 0
Vanduser PWS
Vanduser · Scott County
168 6 1
Waynesville High Point Estates
Waynesville · Pulaski County
165 1 0
Mill Spring PWS
Mill Spring · Wayne County
112 8 0
Whiteside Hidden Acres
Hickory County
92 9 4
Crestview MHP
Pettis County
35 11 4
Joplin Humane Society
Jasper County
30 1 0
Lake Northwoods Utility INC
Gasconade County
25 6 3
About this data

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