Water quality for ZIP code 75021
ZIP 75021 covers Denison and Sherman in Grayson County, Texas, one of 17 ZIP codes in the county. 50 active public water systems serve the county; 40 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 Grayson County
39 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Starr WSC |
3,100 | 0 | 3.3 mi | |
| City of Denison |
27,500 | 3 | 6.4 mi | |
| Pink Hill WSC |
2,835 | 1 | 7.2 mi | |
| Northern Hills Water Service |
264 | 2 | 7.2 mi | |
| City of Bells |
2,101 | 4 | 8.6 mi | |
| City of Knollwood |
1,675 | 1 | 8.9 mi | |
| Thompson Heights Water System |
414 | 4 | 9.0 mi | |
| 3-D Mobile Home and RV Park |
90 | 1 | 10.3 mi | |
| City of Sherman |
43,645 | 2 | 11.3 mi | |
| Munson Point Property Owners Association |
87 | 2 | 11.7 mi | |
| Rocky Point Estates |
441 | 2 | 12.7 mi | |
| Luella SUD |
4,200 | 0 | 13.4 mi | |
| City of Pottsboro |
2,874 | 0 | 13.4 mi | |
| Kentuckytown WSC |
4,455 | 2 | 14.0 mi | |
| American Legion Mia Post 231 |
141 | 6 | 14.2 mi | |
| City of Tom Bean |
799 | 3 | 14.3 mi | |
| Rra Preston Shores Water System |
2,277 | 2 | 14.3 mi | |
| Greater Texoma Utility Authority |
0 | 0 | 14.3 mi | |
| City of Southmayd Westview Subdivision |
738 | 3 | 14.5 mi | |
| Ridgecrest Water System |
1,968 | 2 | 14.6 mi | |
| Texoma Estates WSC |
216 | 1 | 16.2 mi | |
| Tanglewood on Texoma |
4,341 | 0 | 16.4 mi | |
| City of Whitewright |
1,725 | 4 | 16.4 mi | |
| City of Southmayd |
489 | 4 | 16.6 mi | |
| City of Howe |
4,548 | 3 | 17.8 mi |
Non-community systems in Grayson County (10: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Grandpappy Point Marina |
1,027 | 4 | 0 | |
|
Franks Restaurant |
315 | 2 | 0 | |
|
Georgetown Baptist Church |
400 | 4 | 1 | |
|
Twu Water Hauler Pottsboro |
25 | 1 | 0 | |
|
Highport Marina & Resort |
1,000 | 4 | 2 | |
|
Texins Lake Texoma Club |
744 | 0 | 0 | |
|
Flowing Wells Resort |
174 | 2 | 1 | |
|
Texoma Marina and Resort |
180 | 3 | 2 | |
|
Sheppard Afb Recreational Annex |
253 | 0 | 0 | |
|
Big Mineral Camp Resort |
300 | 0 | 0 |
About this data
Water systems are matched to Grayson 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 Texas 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.