County drinking water records
Jefferson County, KS drinking water systems
18 community water systems serve Jefferson County, KS, reporting 19,964 people served in all. A system that also serves other counties counts all of its customers here.
6 of them (33%) had at least one health-based violation in the last 10 years. 6 systems still have one unresolved.
15 rely mainly on groundwater and 3 on surface water, counting water bought from other systems.
14 systems filed a lead service line inventory listing 6 lead lines, 246 galvanized lines that must be replaced and 503 lines of unknown material.
- Community water systems
- 18
- People served, sum of each system's own figure
- 19,964
- Systems with a health-based violation, last 10 years
- 6
- Systems with one unresolved
- 6
- Lead service lines in inventories
- 6
Water systems serving Jefferson County
18 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 |
|---|---|---|---|---|---|---|
| Jefferson Co RWD 12 | Winchester and land outside it | 3,635 | Purchased surface water | 0 | 0 | No inventory |
| Jefferson Co RWD 3 | Valley Falls and land outside it | 2,435 | Groundwater | 4 | 0 | No inventory |
| Jefferson Co RWD 1 | Meriden and land outside it | 2,343 | Groundwater | 0 | 0 | No inventory |
| Jefferson Co RWD 13 | Outside cities and towns | 2,115 | Groundwater | 0 | 0 | No inventory |
| Jefferson Co RWD 7 | Oskaloosa and land outside it | 1,180 | Groundwater | 0 | 0 | No inventory |
| City of Valley Falls | Valley Falls | 1,086 | Surface water | 1 | 1 | 1 |
| City of Oskaloosa | Oskaloosa | 1,086 | Purchased groundwater | 0 | 0 | No inventory |
| City of McLouth | McLouth | 858 | Groundwater | 1 | 0 | No inventory |
| City of Perry | Perry | 858 | Groundwater | 0 | 1 | 3 |
| Jefferson Co RWD 2 | Perry and land outside it | 642 | Groundwater | 0 | 0 | No inventory |
| City of Ozawkie | Ozawkie | 636 | Groundwater | 0 | 1 | No inventory |
| City of Nortonville | Nortonville | 599 | Purchased surface water | 0 | 0 | No inventory |
| Jefferson Co RWD 15 | Grantville | 563 | Purchased groundwater | 2 | 1 | No inventory |
| Jefferson Co RWD 11 | Ozawkie and land outside it | 483 | Groundwater | 1 | 0 | No inventory |
| City of Winchester | Winchester | 450 | Groundwater | 0 | 0 | 2 |
| Jefferson Co RWD 9 | Ozawkie and land outside it | 352 | Groundwater | 0 | 0 | No inventory |
| Lakeside Village Improvement Dist | Ozawkie and land outside it | 343 | Groundwater | 2 | 1 | No inventory |
| Jefferson Co RWD 10 | Ozawkie and land outside it | 300 | Groundwater | 0 | 1 | No inventory |
Cities and towns in Jefferson County
9 places- Grantville1 system
- McLouth1 system
- Meriden1 system
- Nortonville1 system
- Oskaloosa1 system
- Ozawkie1 system
- Perry1 system
- Valley Falls1 system
- Winchester1 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