Plumber in Macomb County, MI

Plumbing in Macomb County changes as you drive north on Van Dyke or Gratiot. Our office is on Stephens Rd in Warren, the county’s largest city, so we look at the county from its south end. Between 1950 and 1960 the county’s population more than doubled, and plenty of houses from that boom still carry the pipe that went in when they were framed. Countywide the median home dates to 1975, and the subdivisions farther north are newer still. Under all of it runs a sewer network that Macomb County Public Works operates in large part. How old your house is, and which of those pipes your street empties into, explains most of what goes wrong in a Macomb basement.

What the 1950s building boom left in south Macomb basements

Only about 4 percent of Macomb homes were built before 1940. So the old pipe here is postwar pipe, and it fails in postwar ways. In a 1950s or early 1960s house we expect a cast iron stack and building drain, a clay or cast iron lateral running out to the street, and in the earliest homes galvanized steel water lines that have been rusting from the inside for seventy years. Roots find the lateral joints. Rust inside the water lines is the usual reason we talk about galvanized pipe replacement in these houses.

Newer north-county subdivisions trade those problems for different ones. A sump pit has to keep up through a long spring rain, and a water heater in a finished basement does more damage when it lets go.

About half of the county’s roughly 373,000 housing units went up between 1950 and 1979, and a quarter of occupied homes are rented (ACS 2020–2024). The ground adds its own load: the 1971 USDA soil survey maps the lower county as almost all poorly drained soil, mostly clay, so footing drains and sump pumps move a lot of water here.

The storm most people here remember is August 11, 2014. The National Weather Service recorded 4 to 6 inches in about four hours across Macomb, southern Oakland and Wayne, and Warren alone took 5.2 inches. Basements that had never seen water took it through the floor drain. If yours did, a backwater valve and a sump pump with battery backup are the two upgrades worth talking through.

Martin, 8.5 Mile and the Macomb Interceptor under your street

Macomb County Public Works runs the large pipes that most local sewers empty into. Its three drainage districts serve about 800,000 residents and businesses in 14 communities. The Macomb Interceptor district alone covers roughly 600,000 people in 11 communities, Sterling Heights, Clinton Township and Fraser among them. Closer to the lake, the Martin district handles Roseville and St. Clair Shores, and the 8.5 Mile Relief Drain district handles Eastpointe and St. Clair Shores.

Parts of St. Clair Shores still have combined sewers that carry rain and sewage together to lakeshore retention basins. The Chapaton basin at the foot of Nine Mile Road in St. Clair Shores was rebuilt to hold 17 million gallons and unveiled in September 2025, and the project separated storm and sanitary flow in a 14-acre area. That protects Lake St. Clair. It does nothing for the pipe from your basement to the street, where most backups begin. A sewer camera inspection shows whether that lateral is clay with open joints, cast iron with a sag, or in decent shape.

The county pipes fail too. On Christmas Eve 2016 the interceptor under 15 Mile Road in Fraser collapsed, homes on Eberlein Drive were condemned, and 15 Mile stayed closed for 347 days.

Heading out from Stephens Rd on Van Dyke, Groesbeck and Gratiot

Our office sits on Stephens Rd between 9 and 10 Mile, just west of Hoover Road on Warren’s east side, so every trip starts on Hoover. From there Van Dyke, Mound and Groesbeck carry us north toward Sterling Heights and Clinton Township. Gratiot and I-94 run northeast toward the lake communities. Center Line, Eastpointe and Roseville are on our doorstep. For homes up toward Hall Road we group the visit with other work in that direction when we can, and we tell you where you fall in the day when you call.

What we check first depends on the decade the house went up. In a 1950s ranch we start at the floor drain and the cleanout, then look at the main stack and the water service where it comes through the basement wall. In a house from the 1980s or later, the sump pit, its discharge line and the water heater usually come first.

Those are county assets. Your plumbing permit comes from somewhere else. Michigan lets the state, a county or the local city or township enforce the plumbing code, so the office that signs off on your work depends on where you live. In Warren it is the Building Division at One City Square, which lists separate permits for sump pumps, gas piping and hot water tanks.

See every city we serve around Warren · What causes basement backups during big storms · How to tell if your house still has galvanized pipes

Last updated October 25, 2026