Water quality for ZIP code 45402
ZIP 45402 covers Dayton in Montgomery County, Ohio, one of 32 ZIP codes in the county. 71 active public water systems serve the county; 46 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 Montgomery County
22 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Dayton Public Water System |
141,407 | 0 | 1.0 mi | |
| Oakwood City PWS |
9,572 | 0 | 3.1 mi | |
| Sherwood Grove MHP |
30 | 1 | 4.0 mi | |
| Trotwood City PWS |
9,000 | 2 | 5.5 mi | |
| West Carrollton City PWS |
8,361 | 1 | 6.8 mi | |
| Montgomery County Water Services 1 PWS |
150,207 | 0 | 7.1 mi | |
| Jefferson Regional Water Authority |
4,813 | 1 | 7.2 mi | |
| Quarry Lakes MHP LLC |
141 | 3 | 7.3 mi | |
| Voyager Village MHP |
400 | 2 | 7.7 mi | |
| Huber Heights Public Water System |
43,439 | 1 | 8.3 mi | |
| Englewood City PWS |
13,463 | 0 | 8.9 mi | |
| Miamisburg City PWS |
19,790 | 1 | 9.3 mi | |
| New Lebanon Village PWS |
3,770 | 1 | 9.9 mi | |
| Union City PWS |
7,000 | 1 | 10.9 mi | |
| Brookville Municipality PWS |
5,923 | 2 | 11.0 mi | |
| Oakwood Village MHP |
1,500 | 3 | 11.7 mi | |
| Brookville Lake Estates |
211 | 1 | 12.1 mi | |
| Germantown City PWS |
5,547 | 1 | 12.4 mi | |
| Farmersville Village PWS |
975 | 1 | 12.9 mi | |
| Phillipsburg Village PWS |
490 | 2 | 14.3 mi | |
| Dayton VA Bldg 410 |
125 | 2 | — | |
| Dayton VA Bldg 320 Pod a |
95 | 2 | — |
Non-community systems in Montgomery County (48: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Montgomery 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 Ohio 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.