Public water system · MI0004878
ActiveSouthwest Oakland Township
At a glance
Southwest Oakland Township (PWSID MI0004878) is an active community water system in Oakland County, Michigan. It reports serving 4,943 people through 2,066 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's Safe Drinking Water Act records list no violations for this system.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
4,943
Service connections
2,066
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Southwest Oakland Township compare with other water systems in Oakland County?
By EPA's size categories, Southwest Oakland Township is a medium system (3,301 to 10,000 people). Oakland County has 734 active public water systems. Its population served is about 3.2 times the county average of 1,561 people per system, and accounts for 0.4% of the 1,145,905 people reported by systems filed under the county. Across Michigan, the 10,599 active systems average 847 people each. Nationally, the average active community water system reports serving 6,703 people, so Southwest Oakland Township is about 26% below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Michigan has 1,332 active community water systems, 13% of the state's 10,599 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 10,214 Michigan systems (96%) list groundwater as their primary source.
Who owns and regulates Southwest Oakland Township?
EPA lists Southwest Oakland Township as owned by a local government. The MI state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 56 of the 734 active systems in Oakland County (7.6%) are also owned by a local government.
Does Southwest Oakland Township have drinking water violations?
No SDWA violations on record.
EPA's SDWA violation and enforcement data (via EPA ECHO, updated quarterly) lists no violations for Southwest Oakland Township. For the latest compliance status, check EPA ECHO for current compliance history.
Southwest Oakland Township: frequently asked questions
Who runs Southwest Oakland Township?
Southwest Oakland Township (PWSID MI0004878) is a community water system owned by a local government. It is regulated by the MI state drinking water program.
How many people does Southwest Oakland Township serve?
Southwest Oakland Township reports serving 4,943 people through 2,066 service connections in Oakland County, Michigan.
Where does Southwest Oakland Township get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Southwest Oakland Township have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Southwest Oakland Township's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. EPA's Safe Drinking Water Act records list no violations for this system. For current results, consult the system's annual water quality report, EPA ECHO, or the MI state drinking water program.
Where can I find Southwest Oakland Township's water quality report?
As a community water system, Southwest Oakland Township must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Oakland County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Troy | Oakland | 85,854 | Community | Purchased surface water |
| Rochester Hills | Oakland | 74,000 | Community | Purchased surface water |
| Waterford Township | Oakland | 73,441 | Community | Groundwater |
| Southfield | Oakland | 71,739 | Community | Purchased surface water |
| Pontiac | Oakland | 63,776 | Community | Purchased surface water |
| Royal Oak, City of | Oakland | 57,236 | Community | Purchased surface water |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Southwest Oakland Township, PWSID MI0004878, Michigan”, https://aquacensus.com/water-systems/michigan/southwest-oakland-township-mi0004878 (data as of October 1, 2026).