County · Missouri
DeKalb County, Missouri: drinking water records
This overview covers 6 ZIP codes and 22 community water systems in DeKalb County. It also stands in for 0 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Mo American St Joseph MO1010714 | 89,171 | 60 | 0 | 0 | 3 ppb |
| Dekalb County Pwsd 1 MO1024191 | 7,635 | 120 | 0 | 0 | 1.2 ppb |
| Clinton County Pwsd 3 MO1024155 | 3,722 | 240 | 1 | 0 | 2.3 ppb |
| Maysville PWS MO1010510 | 1,096 | 0 | 0 | 22 | 4.4 ppb |
| Magnolia - Killian LA1063030 | 999 | 0 | 0 | 5 | 0 ppb |
| Magnolia-River Pines Plantation LA1063018 | 300 | 0 | 0 | 4 | 0 ppb |
| Magnolia-Riverscape @ Clio Sub LA1063106 | 165 | 0 | 0 | 3 | 1 ppb |
| Hilton Sound (Sc3250024) SC3250024 | 50 | 0 | 0 | 1 | 3 ppb |
| Mo American Stewartsville MO1010762 | 928 | 0 | 0 | 0 | 0 ppb |
| Woodland Harbor TX0320014 | 459 | 0 | 0 | 0 | 0 ppb |
| Osborn PWS MO1010609 | 405 | 0 | 0 | 0 | 2.4 ppb |
| Union Star PWS MO1010802 | 386 | 0 | 0 | 0 | 1.2 ppb |
| Ridge Pointe S/D (Sc3250105) SC3250105 | 336 | 0 | 0 | 0 | 6 ppb |
| Magnolia-Lakeside East LA1063098 | 324 | 0 | 0 | 0 | 0 ppb |
| Rockford Place-Charwood (Sc3250099) SC3250099 | 277 | 0 | 0 | 0 | 0 ppb |
| Clarksdale PWS MO1010167 | 245 | 0 | 0 | 0 | 1.4 ppb |
| Murray Hill Estates (Sc3250014) SC3250014 | 134 | 0 | 0 | 0 | 2 ppb |
| Magnolia-Highland Ridge LA1063087 | 80 | 0 | 0 | 0 | 0 ppb |
| Chasehunt Farms (Sc3250104) SC3250104 | 75 | 0 | 0 | 0 | 7 ppb |
| Shealy Estates III (Sc3250102) SC3250102 | 70 | 0 | 0 | 0 | 6 ppb |
| Lakeside Forest 2 (Sc3250030) SC3250030 | 43 | 0 | 0 | 0 | 2 ppb |
| Great Northwest Wholesale Water Commiss MO1071603 | 25 | 0 | 0 | 0 | not reported |
ZIP reports in DeKalb County
No ZIP report in this county is published yet.
Sources and scope
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.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.