Water quality for ZIP code 48309
ZIP 48309 covers Rochester Hills and Auburn Hills in Oakland County, Michigan, one of 68 ZIP codes in the county. 729 active public water systems serve the county; 204 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 Oakland County
107 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Sunnydale Gardens Water Association |
190 | 2 | 1.9 mi | |
| College Heights Mobile Home Park |
405 | 0 | 2.1 mi | |
| Rochester Rochester |
7,130 | 0 | 3.2 mi | |
| Auburn Hills Auburn Hills |
21,412 | 0 | 3.4 mi | |
| Rochester East Rochester |
5,100 | 0 | 4.6 mi | |
| Southwest Oakland Township |
4,943 | 0 | 4.9 mi | |
| Orion Lake Estates MHC |
1,058 | 2 | 5.2 mi | |
| Pontiac Pontiac |
63,776 | 0 | 5.2 mi | |
| Southeast Oakland Township |
1,923 | 0 | 5.6 mi | |
| Troy Troy |
85,854 | 0 | 5.6 mi | |
| Bloomfield Hills Bloomfield Hills |
3,579 | 0 | 6.2 mi | |
| Oakland Hunt Subdivision |
671 | 0 | 6.6 mi | |
| Plum Creek Sub |
105 | 0 | 7.1 mi | |
| Birmingham Birmingham |
20,472 | 2 | 7.6 mi | |
| Bloomfield Township |
41,691 | 0 | 7.8 mi | |
| Knorrwood Knolls Subdivision |
240 | 0 | 8.0 mi | |
| Sylvan Lake Sylvan Lake |
2,155 | 0 | 8.0 mi | |
| Twin Lakes Subdivision |
602 | 0 | 8.0 mi | |
| Orion Township |
33,000 | 0 | 8.4 mi | |
| Shorewood Hills Subdivision |
256 | 1 | 8.4 mi | |
| Clawson Clawson |
11,825 | 2 | 8.5 mi | |
| Keego Harbor, City of Keego Harbor |
2,740 | 0 | 8.7 mi | |
| Lake Orion, Village of Lake Orion |
2,973 | 0 | 9.0 mi | |
| Wynstone Subdivision |
1,146 | 0 | 9.5 mi | |
| Woodlands MHC |
650 | 1 | 9.6 mi |
Non-community systems in Oakland County (621: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Oakland 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 or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau county subdivision files or the centre of the first town EPA lists the system as serving, from Census Bureau place files.
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 Michigan 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.