County drinking water records
Johnson County, KS drinking water systems
7 community water systems serve Johnson County, KS, reporting 670,249 people served in all. A system that also serves other counties counts all of its customers here.
1 of them had at least one health-based violation in the last 10 years. 2 systems still have one unresolved.
2 rely mainly on groundwater and 5 on surface water, counting water bought from other systems.
Their lead service line inventories list 1,369 lead lines, 4,308 galvanized lines that must be replaced and 4,525 lines of unknown material.
- Community water systems
- 7
- People served, sum of each system's own figure
- 670,249
- Systems with a health-based violation, last 10 years
- 1
- Systems with one unresolved
- 2
- Lead service lines in inventories
- 1,369
Water systems serving Johnson County
7 systemsPeople served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.
| System | Serves | People served | Main source | Health-based violations, 10 years | Unresolved | Lead lines |
|---|---|---|---|---|---|---|
| Water District 1 of Johnson Co | Overland Park, Shawnee and 14 more | 490,000 | Surface water | 0 | 0 | No inventory |
| City of Olathe | Olathe | 143,014 | Surface water | 0 | 0 | No inventory |
| City of Gardner | Gardner | 23,942 | Surface water | 0 | 0 | No inventory |
| Johnson Co RWD 7 | Gardner and Edgerton and land outside them | 6,457 | Purchased surface water | 0 | 0 | No inventory |
| City of Desoto | De Soto | 4,645 | Groundwater | 3 | 3 | 1,369 |
| City of Edgerton | Edgerton and land outside it | 1,741 | Purchased surface water | 0 | 0 | No inventory |
| City of Clearview City | De Soto | 450 | Purchased groundwater | 0 | 2 | No inventory |
Cities and towns in Johnson County
19 places- De Soto2 systems
- Edgerton2 systems
- Fairway1 system
- Gardner2 systems
- Lake Quivira1 system
- Leawood1 system
- Lenexa1 system
- Merriam1 system
- Mission1 system
- Mission Hills1 system
- Mission Woods1 system
- Olathe2 systems
- Overland Park1 system
- Prairie Village1 system
- Roeland Park1 system
- Shawnee1 system
- Spring Hill2 systems
- Westwood1 system
- Westwood Hills1 system
Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations