Water quality for ZIP code 66066
ZIP 66066 covers Oskaloosa in Jefferson County, Kansas, one of 9 ZIP codes in the county. 18 active public water systems serve the county; 11 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Jefferson County
17 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Oskaloosa, City of Oskaloosa |
1,086 | 1 | 1.3 mi | |
| Jefferson CO Rwd 10 Ozawkie |
300 | 1 | 6.1 mi | |
| Jefferson CO Rwd 9 Ozawkie |
352 | 0 | 6.5 mi | |
| McLouth, City of Mclouth |
858 | 2 | 6.6 mi | |
| Jefferson CO Rwd 2 Perry |
642 | 2 | 7.2 mi | |
| Ozawkie, City of Ozawkie |
636 | 1 | 7.6 mi | |
| Jefferson CO Rwd 11 Ozawkie |
483 | 0 | 8.0 mi | |
| Winchester, City of Winchester |
450 | 1 | 8.9 mi | |
| Perry, City of Perry |
858 | 2 | 9.5 mi | |
| Jefferson CO Rwd 12 Winchester |
3,635 | 0 | 9.6 mi | |
| Lakeside Village Improvement Dist Ozawkie |
343 | 3 | 9.7 mi | |
| Jefferson CO Rwd 13 Lawrence |
2,115 | 3 | 10.3 mi | |
| Jefferson CO Rwd 3 Valley Falls |
2,435 | 0 | 10.4 mi | |
| Valley Falls, City of Valley Falls |
1,086 | 1 | 11.8 mi | |
| Jefferson CO Rwd 1 Meriden |
2,343 | 0 | 12.5 mi | |
| Nortonville, City of Nortonville |
599 | 0 | 14.7 mi | |
| Jefferson CO Rwd 15 Grantville |
563 | 1 | 14.9 mi |
About this data
Water systems are matched to Jefferson County, the county this ZIP code lies in, nearest to the ZIP code's centre first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Kansas records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.