Nitrate-Nitrite (Combined) violations in Missouri
159 active public water systems in Missouri had a Nitrate-Nitrite (Combined) violation in the past three years, 1 of them still unresolved. What Nitrate-Nitrite (Combined) is and why it matters.
Systems with a Nitrate-Nitrite (Combined) violation
Unresolved first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
New Hamburg Central Benton · Scott County |
45 | 7 | 5 | |
|
Senath PWS Senath · Dunklin County |
1,767 | 9 | 0 | |
|
Leadwood PWS Leadwood · St. Francois County |
1,200 | 4 | 1 | |
|
Clarkton PWS Clarkton · Dunklin County |
1,124 | 7 | 0 | |
|
Lake Sherwood Subd Warren County |
1,100 | 4 | 0 | |
|
Encounter Cove Camp & Conference Center Camden County |
1,052 | 2 | 0 | |
|
Ozark Correctional Center Fordland · Webster County |
900 | 6 | 0 | |
|
Petro Stopping Center Newton County |
900 | 2 | 0 | |
|
ST Francois County Pwsd 2 Park Hills · St. Francois County |
850 | 5 | 3 | |
|
S K & M Water and Sewer Company Perry County |
750 | 7 | 0 | |
|
Meadow Hts R II High School Bollinger County |
650 | 3 | 0 | |
|
Tribesman Resort Stone County |
650 | 4 | 3 | |
|
Martinsburg PWS Martinsburg · Audrain County |
559 | 8 | 0 | |
|
General Council Assemblies of God Springfield · Greene County |
500 | 5 | 0 | |
|
Arbyrd PWS Arbyrd · Dunklin County |
490 | 4 | 0 | |
|
Parma PWS Parma · New Madrid County |
450 | 5 | 1 | |
|
Treehouse Condominiums Branson · Stone County |
445 | 5 | 0 | |
|
Ravenwood PWS Ravenwood · Nodaway County |
420 | 6 | 0 | |
|
Usace Camp Semo Wappapello Wayne County |
400 | 3 | 2 | |
|
Argyle Estates Water Supply Franklin County |
380 | 5 | 1 | |
|
Community Water System Wappapello · Wayne County |
378 | 4 | 0 | |
|
Arrowhead Campgrounds INC Bollinger County |
375 | 2 | 1 | |
|
Fisk PWS Fisk · Butler County |
342 | 8 | 0 | |
|
Altenburg PWS Altenburg · Perry County |
341 | 6 | 2 | |
|
Bosworth PWS Bosworth · Carroll County |
305 | 2 | 0 | |
|
Blodgett PWS Blodgett · Scott County |
300 | 8 | 1 | |
|
Crabb & Company Butler County |
300 | 3 | 1 | |
|
Garrisons Campground and Canoe Rental Crawford County |
300 | 4 | 0 | |
|
Phillips 66 #258 Greene County |
300 | 4 | 0 | |
|
Silver Oaks Franklin County |
300 | 2 | 0 | |
|
Sycamore Creek Family Ranch Taney County |
300 | 2 | 0 | |
|
Benton Investment Group LLC Scott County |
250 | 3 | 0 | |
|
Camp Mihaska Crawford County |
250 | 2 | 1 | |
|
Mill Spring Frohna · Perry County |
250 | 5 | 1 | |
|
Meramec Valley Camp Resort Crawford County |
250 | 4 | 0 | |
|
Waymark Church Monett · Barry County |
250 | 2 | 0 | |
|
Keithley Beach Subd Warsaw · Benton County |
240 | 4 | 1 | |
|
Cross Timbers PWS Cross Timbers · Hickory County |
215 | 5 | 0 | |
|
Killarney Shores Subd Ironton · Iron County |
203 | 7 | 1 | |
|
Prairie Chapel Urbana · Hickory County |
200 | 3 | 1 | |
|
The Artisan at Baetje Farms Ste. Genevieve County |
200 | 1 | 0 | |
|
Wonderland Camp Morgan County |
200 | 4 | 1 | |
|
Black River Lodge INC Reynolds County |
165 | 1 | 0 | |
|
Freistatt PWS Freistatt · Lawrence County |
165 | 5 | 0 | |
|
Bay Point Condominiums Camden County |
150 | 3 | 0 | |
|
Coopers Landing Boone County |
150 | 3 | 0 | |
|
Dawt Mill and Campground Ozark County |
150 | 3 | 0 | |
|
Little Guys Baseball Club Greene County |
150 | 4 | 0 | |
|
Ozark Park Estates Branson · Taney County |
150 | 9 | 5 | |
|
Pizza Hut Barry County |
150 | 2 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Nitrate-Nitrite (Combined), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Nitrate-Nitrite (Combined) 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. Retrieved from ECHO on Oct 11, 2026.