A plumber in St. Clair Shores spends a lot of time on sewer laterals, and the city's own rule explains why. You own the line from your house to the point where it joins the city main, and that connection may be across the street. Half of the city's housing went up in the 1950s alone, about 14,200 of roughly 28,300 homes, so many of those laterals have been in the ground for around 70 years. The city says its water system is more than 80 years old as well. We drive over from Stephens Rd in Warren for clogged mains, backups and the dig permits that come with them.
Roots, grease and the lateral you own under the street
After heavy summer rains in 2016 backed up basements, the city council hired the engineering firm Anderson, Eckstein and Westrick to investigate. It found tree roots and grease, and recommended cleaning every city sewer line at least once every five years plus chemical root control. City ordinance already requires downspouts to be disconnected from footing drains, but a spot check found houses that seemed to have been hooked back up.
The city's Sewer Division is plain about who owns what. The city maintains the main. The homeowner owns the lateral all the way to where it meets that main, and the division says no resident should have a sewer line excavated without first getting a permit and an inspection through Community Development. So the order matters: clear the line, run a sewer camera inspection to see what's actually down there, then talk about repair.

Work that follows the 1950s housing boom near Jefferson
- Sewer line repair and inspection
Your lateral can run under the road to a main on the far side, and the city wants a permit and inspection before any excavation.
- Hydro jetting
Roots and grease were the two causes the 2016 study named, and jetting scours both off the pipe wall instead of punching a hole through them.
- Backwater valve installation
Parts of the city drain to a combined sewer, which the city shows on its own area map, and in 2019 lake water even ran backward through storm sewers on low streets.
- Main water line repair
A water system over 80 years old feeds service lines laid during the 1950s boom, and old lines leak at the curb stop and the wall.
- Basement floor drain cleaning
A partly blocked floor drain is often the first sign the lateral is narrowing, well before a full backup, which is why the Sewer Division suggests a routine annual maintenance plan.
- Sump pump installation and repair
In a 1950s basement where footing drains feed a sump, the pump has to keep running through spring rains, and its discharge should leave the house above grade instead of joining the sewer.
When Lake St. Clair rises, low streets drain backward
In 2019 the city declared a high-water emergency and opened sandbag sites for canal and shoreline residents. Public Works stacked sandbag levees around stormwater pump stations, Jefferson flooded where lake water spilled across yards, and on some low streets water flowed backward up the storm sewers. The benchmark is still 1973, when about 100 families in the Shores were evacuated.
The city describes two paths for rain: into the combined sewer for treatment at the regional plant, or out to the lake through separate storm sewers. Either one can push back toward a basement when it's full. If your house has a sump, make sure its discharge isn't tied into the sewer, and keep downspouts on the lawn.

Out Hoover and Ten Mile from Stephens Road to the Shores
The Shores is on the east side of the area we cover. From Stephens Rd we head over to Hoover Road and out 10 Mile through Eastpointe, so we line up visits there and tell you on the call where yours falls. In a 1950s ranch, the first stop is the main cleanout, usually low on the wall facing the street, and then we figure out which side of the road your main is on, since that decides how long the lateral is. Through early 2027, on the city’s tentative schedule, southbound Jefferson traffic detours from 11 Mile to Harper and 10 Mile for the relief sewer work, and we plan around it.

Jefferson Avenue landmarks and the city school districts
- City Hall, 27600 Jefferson Ave., where Community Development issues sewer excavation permits.
- The Jefferson Relief Sewer, a 60-inch line tunneled under the southbound curb lane from 9 Mile to Rio Vista.
- The Nautical Mile, the marina stretch of Jefferson between 9 and 10 Mile.
- Selinsky-Green Farmhouse Museum and Brys Park Arboretum, both run by the city.
- South Lake, Lakeview and Lake Shore public school districts.
Most of those places line Jefferson, and so does the newest sewer in town. The regional sanitary district’s 60-inch relief line adds capacity under the avenue and cuts overflows to the lake. Your lateral still drains into whatever main is out front, so its condition stays your call. The city also sits in the Lake St. Clair Direct Drainage Watershed and follows a stormwater management plan to protect the lake. It even posts a flyer on flushed wipes, which snag in private laterals and city mains alike.
Getting to our office from St. Clair Shores
Take Nine Mile or Ten Mile Road west from Harper or Jefferson through Eastpointe to Hoover Road, follow Hoover to Stephens Road and turn west; our office sits just west of Hoover in Warren.
11355 Stephens Rd, Warren, MI 48089
Get directions to our Warren officeSt. Clair Shores plumbing questions
Who is responsible for the sewer line under my street in St. Clair Shores?
The city maintains the main. You own the lateral from the house to the point where it joins the main, which may be across the street. Before anyone excavates it, the city requires a permit and an inspection through Community Development.
Why does my basement back up after heavy rain?
The city's study pointed to roots and grease, plus downspouts reconnected to footing drains against city ordinance. A full main can also push water up a floor drain. Report a backup to the city's Public Works sewer division, as Michigan's sewer backup law requires, and keep photos.
Have a plumbing problem in St. Clair Shores? Tell us the address and what's happening.
(207) 419-2600Near St. Clair Shores
- Plumber in Grosse Pointe WoodsRuns its Lake Front Park on Jefferson inside the Shores
- Plumber in RosevillePostwar homes to the west, in the same Southeast Macomb Sanitary District
- Plumber in EastpointeInner-ring homes west along 9 Mile, also in that sanitary district
- Plumber in Harper WoodsPostwar homes whose storm water drains to the Milk River basins
- Macomb CountyCovers the Shores, Warren and the suburbs north and east of them
See every city we serve around Warren · More Macomb County cities · Who owns the sewer line between your house and the street · Cast iron drain pipes and the signs they're failing
Last updated October 25, 2026

