Water quality for ZIP code 74027
ZIP 74027 covers Delaware in Nowata County, Oklahoma, one of 5 ZIP codes in the county. 12 active public water systems serve the county; 11 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Nowata County
11 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Nowata County Rwd # 3 |
225 | 1 | 4.1 mi | |
| Lenapah Public Works Authority |
298 | 1 | 4.2 mi | |
| Nowata Municipal Authority |
3,971 | 2 | 6.7 mi | |
| Consolidated Rwd #1 Nowata and Rogers CO |
1,580 | 0 | 6.8 mi | |
| Elm Bend Rwd INC |
600 | 3 | 8.7 mi | |
| Nowata CO Rwd #7 |
1,050 | 6 | 9.8 mi | |
| Nowata CO Rwd #2 |
205 | 4 | 10.3 mi | |
| Nowata CO Rwd #6 |
450 | 4 | 11.0 mi | |
| Nowata CO RW & S Dist #1 |
500 | 3 | 13.7 mi | |
| South Coffeyville |
790 | 2 | 14.3 mi | |
| Nowata CO Rwd #5 |
70 | 1 | — |
About this data
Water systems are matched to Nowata 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 Oklahoma 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.