State
Missouri: drinking water records
EPA lists 1,688 community water systems serving homes in Missouri. 241 took part in EPA's national PFAS survey (UCMR 5), and 77 found at least one PFAS above the level laboratories can measure.
In focus1,688community water systems
Public records. Clearer context.
0
ZIP reports published
1,688
community water systems
407
systems with a health-based violation since 2016
76
systems that reached the lead action level since 2016
Counties
- Adair County 6 systems
- Andrew County 14 systems
- Atchison County 11 systems
- Audrain County 14 systems
- Barry County 31 systems
- Barton County 8 systems
- Bates County 15 systems
- Benton County 38 systems
- Bollinger County 19 systems
- Boone County 16 systems
- Buchanan County 6 systems
- Butler County 13 systems
- Caldwell County 14 systems
- Callaway County 19 systems
- Camden County 62 systems
- Cape Girardeau County 22 systems
- Carroll County 8 systems
- Carter County 11 systems
- Cass County 33 systems
- Cedar County 11 systems
- Chariton County 5 systems
- Christian County 29 systems
- Clark County 7 systems
- Clay County 30 systems
- Clinton County 11 systems
- Cole County 13 systems
- Cooper County 13 systems
- Crawford County 34 systems
- Dade County 8 systems
- Dallas County 9 systems
- Daviess County 12 systems
- DeKalb County 22 systems
- Dent County 3 systems
- Douglas County 2 systems
- Dunklin County 15 systems
- Franklin County 43 systems
- Gasconade County 15 systems
- Gentry County 7 systems
- Greene County 29 systems
- Grundy County 6 systems
- Harrison County 9 systems
- Henry County 37 systems
- Hickory County 11 systems
- Holt County 8 systems
- Howard County 6 systems
- Howell County 9 systems
- Iron County 10 systems
- Jackson County 23 systems
- Jasper County 18 systems
- Jefferson County 65 systems
- Johnson County 17 systems
- Knox County 30 systems
- Laclede County 5 systems
- Lafayette County 16 systems
- Lawrence County 12 systems
- Lewis County 6 systems
- Lincoln County 32 systems
- Linn County 9 systems
- Livingston County 10 systems
- Macon County 11 systems
- Madison County 3 systems
- Maries County 5 systems
- Marion County 4 systems
- McDonald County 11 systems
- Mercer County 3 systems
- Miller County 16 systems
- Mississippi County 6 systems
- Moniteau County 7 systems
- Monroe County 6 systems
- Montgomery County 21 systems
- Morgan County 15 systems
- New Madrid County 15 systems
- Newton County 14 systems
- Nodaway County 13 systems
- Oregon County 5 systems
- Osage County 12 systems
- Ozark County 5 systems
- Pemiscot County 7 systems
- Perry County 10 systems
- Pettis County 20 systems
- Phelps County 16 systems
- Pike County 6 systems
- Platte County 20 systems
- Polk County 14 systems
- Pulaski County 16 systems
- Putnam County 5 systems
- Ralls County 4 systems
- Randolph County 5 systems
- Ray County 9 systems
- Reynolds County 3 systems
- Ripley County 5 systems
- Saline County 13 systems
- Schuyler County 4 systems
- Scotland County 2 systems
- Scott County 20 systems
- Shannon County 3 systems
- Shelby County 5 systems
- St. Charles County 20 systems
- St. Clair County 6 systems
- St. Francois County 22 systems
- St. Louis County 5 systems
- St. Louis city 1 systems
- Ste. Genevieve County 8 systems
- Stoddard County 16 systems
- Stone County 88 systems
- Sullivan County 7 systems
- Taney County 52 systems
- Texas County 11 systems
- Vernon County 9 systems
- Warren County 18 systems
- Washington County 12 systems
- Wayne County 15 systems
- Webster County 11 systems
- Worth County 4 systems
- Wright County 7 systems
ZIP reports
Sources
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.