Water quality for ZIP code 63365
ZIP 63365 covers New Melle in St. Charles County, Missouri, one of 14 ZIP codes in the county. 55 active public water systems serve the county; 34 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in St. Charles County
18 systems, largest first| System | Serves | Status | Rules violated, 3 yr |
|---|---|---|---|
| ST Charles County Pwsd 2 |
100,587 | 1 | |
| ST Charles PWS St. Charles |
78,961 | 1 | |
| ST Peters PWS St. Peters |
52,575 | 0 | |
| Wentzville PWS Wentzville |
41,784 | 1 | |
| Ofallon PWS O Fallon |
32,515 | 1 | |
| ST Paul PWS |
1,700 | 1 | |
| ST Charles CO Pwsd 2 Augusta |
881 | 0 | |
| ST Charles Pwsd 2 Foristell Foristell |
550 | 1 | |
| MO American Jaxson Foristell |
535 | 0 | |
| Ecm Water & Sewer Authority Flint Hill Flint Hill |
469 | 0 | |
| Portage Des Sioux PWS Portagedessioux |
345 | 1 | |
| Prairie View Acres Subd |
135 | 2 | |
| ST Charles CO Pwsd 2 Sumac Ridge |
103 | 1 | |
| Tara Oaks Manor Assn |
100 | 1 | |
| Weldon Spring Heights Village PWS Weldon Spr Hght |
100 | 0 | |
| Big Country Acres Subdivision |
90 | 3 | |
| Confluence Rivers Stone Ridge Meadows |
60 | 1 | |
| Country Estates |
50 | 2 |
Non-community systems in St. Charles County (36: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to St. Charles 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 Missouri 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.