Cyanide violations in Missouri
11 active public water systems in Missouri had a Cyanide violation in the past three years, 1 of them in the latest quarter of EPA's data. What Cyanide is and why it matters.
Systems with a Cyanide violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Osage CO Pwsd 1 Bonnots Mill, Loose Creek · Osage County |
1,221 | 3 | 0 | |
|
General Council Assemblies of God Springfield · Greene County |
500 | 5 | 0 | |
|
Community Water System Wappapello · Wayne County |
378 | 4 | 0 | |
|
Streamline the Oaks Crawford County |
98 | 7 | 1 | |
|
Whiteside Hidden Acres Hickory County |
92 | 9 | 4 | |
|
Fennec Fox Way LLC Jefferson County |
70 | 7 | 1 | |
|
Charity PWS Pulaski County |
55 | 9 | 3 | |
|
Warrens Oakland Park Stone County |
52 | 3 | 0 | |
|
Rolling Hills PWS Pulaski County |
48 | 8 | 3 | |
|
Crestview MHP Pettis County |
35 | 11 | 4 | |
|
Eagles Landing Subdivision Association Miller County |
25 | 3 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Cyanide, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Cyanide 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.