COUNTY WATER-SYSTEM LEDGER
Johnson, Missouri
EPA’s September 2026 export lists 8 active community water systems serving Johnson, Missouri, with 1 current-violation flags and 0 serious-violator flags among the covered systems.
Source: EPA SDWIS system-search export · Active community systems serving 2,500+ people · Snapshot 13 Sep 2026
01 / SYSTEMS
Water systems serving Johnson, Missouri
EPA associates 8 covered systems with Johnson, Missouri; their reported population-served values total 62,252 and may overlap.
Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| Mo American WarrensburgMO1010833 | 18,500 | Ground water | No current violation flagged |
| Johnson County PWSd 2MO1024310 | 12,490 | Ground water | No current violation flagged |
| Whiteman Air BaseMO1079501 | 10,106 | Ground water | No current violation flagged |
| Laf Jo Saline County Cons PWSd 2MO1024326 | 7,180 | Surface water purchased | No current violation flagged |
| Johnson County PWSd 3MO1024311 | 4,700 | Ground water | No current violation flagged |
| Johnson County PWSd 1MO1024309 | 3,730 | Ground water | Current monitoring/reporting flag |
| Knob Noster PWSMO1010432 | 2,863 | Ground water | No current violation flagged |
| Holden PWSMO1010371 | 2,683 | Surface water | No current violation flagged |
02 / SOURCE MIX
Primary water sources for Johnson, Missouri
EPA classifies 8 systems serving Johnson, Missouri across 3 primary-source categories; Ground water is the largest category with 6 systems.
It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.