Water quality for ZIP code 73070
ZIP 73070 covers Norman in Cleveland County, Oklahoma, one of 13 ZIP codes in the county. 74 active public water systems serve the county; 59 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Cleveland County
14 systems, largest first| System | Serves | Status | Rules violated, 3 yr |
|---|---|---|---|
| Moore Public Works Authority |
55,083 | 4 | |
| Oklahoma University |
34,000 | 0 | |
| Noble Utilities Authority |
5,750 | 4 | |
| Joseph Harp Corr Inst |
3,000 | 4 | |
| Lexington |
2,086 | 3 | |
| Sooner Utilities Sleepy Hollow |
438 | 3 | |
| Sunnylane Estates |
300 | 1 | |
| Wildfire Estates Homeowners |
285 | 8 | |
| Stonetown Clearview MHC |
170 | 3 | |
| Prairie Creek Village MHP |
145 | 1 | |
| Cleveland CO Rw,s,g&swmd #1 |
80 | 3 | |
| Noble Estates MHP |
75 | 4 | |
| 37 Mobile Homes |
50 | 3 | |
| Pecan Tree Water Assn |
22 | 8 |
Non-community systems in Cleveland County (59: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Cleveland County, the county this ZIP code lies in, largest 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.
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.