COUNTY WATER-SYSTEM LEDGER
Johnston, Oklahoma
EPA’s September 2026 export lists 2 active community water systems serving Johnston, Oklahoma, with 0 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 Johnston, Oklahoma
EPA associates 2 covered systems with Johnston, Oklahoma; their reported population-served values total 5,783 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 |
|---|---|---|---|
| Tishomingo Municipal AuthorityOK1010815 | 3,000 | Surface water | No current violation flagged |
| Johnston Co Rwd #3OK2003511 | 2,783 | Ground water | No current violation flagged |
02 / SOURCE MIX
Primary water sources for Johnston, Oklahoma
EPA classifies 2 systems serving Johnston, Oklahoma across 2 primary-source categories; Surface water is the largest category with 1 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.