CITY WATER-SYSTEM LEDGER
Derby, Kansas
EPA’s September 2026 export lists 2 active community water systems serving Derby, Kansas, 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 Derby, Kansas
EPA associates 2 covered systems with Derby, Kansas; their reported population-served values total 31,458 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 |
|---|---|---|---|
| Derby, City OfKS2017328 | 25,413 | Surface water purchased | No current violation flagged |
| Sedgwick Co Rwd 3KS2017306 | 6,045 | Surface water purchased | No current violation flagged |
02 / SOURCE MIX
Primary water sources for Derby, Kansas
EPA classifies 2 systems serving Derby, Kansas across 1 primary-source categories; Surface water purchased is the largest category with 2 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.