Water quality for ZIP code 74528
ZIP 74528 covers Blanco in Pittsburg County, Oklahoma, one of 13 ZIP codes in the county. 22 active public water systems serve the county; 22 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Pittsburg County
21 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Pittsburg Co. Rwd #5 |
1,750 | 2 | 9.3 mi | |
| Savanna |
800 | 5 | 10.0 mi | |
| Kiowa |
731 | 5 | 10.2 mi | |
| Haileyville |
889 | 2 | 12.4 mi | |
| Hartshorne |
2,300 | 1 | 12.5 mi | |
| Adamson Rwd #8 |
4,221 | 1 | 12.8 mi | |
| Pittsburg Co. Rwd #6 (alderson) |
300 | 4 | 13.0 mi | |
| US Army Ammunition Plant |
1,872 | 2 | 14.1 mi | |
| Pittsburg Co. Rwd #11 (kiowa) |
790 | 3 | 14.6 mi | |
| Krebs Utility Authority |
2,051 | 3 | 15.6 mi | |
| McAlester Pwa |
18,206 | 5 | 16.2 mi | |
| Pittsburg Co. Rwd #9 (mcalester) |
872 | 4 | 21.3 mi | |
| Pittsburg Co. Rwd #16 |
1,268 | 1 | 21.9 mi | |
| Pittsburg Co. Rwd #7 (arpelar) |
2,040 | 2 | 22.0 mi | |
| Pittsburg Co. Rwd #14 |
1,680 | 4 | 27.5 mi | |
| Indianola Rwd #18 |
2,000 | 3 | 29.0 mi | |
| Pittsburg Co. Pwa (crowder) |
2,203 | 4 | 29.7 mi | |
| Quinton |
1,071 | 2 | 34.6 mi | |
| Longtown Rw&sd #1 (pittsburg Co.) |
5,444 | 2 | 37.9 mi | |
| Pittsburg Co. Rwd #20 (carlton Landing) |
38 | 2 | — | |
| Pittsburg Co. Water Authority |
5 | 6 | — |
About this data
Water systems are matched to Pittsburg 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.