Plumbing calls from Detroit that reach our Warren office mostly come from the blocks just south of 8 Mile Road, the county line between the two cities. Those blocks sit in the 48234 and 48205 ZIP codes, where the census puts the median home at 1950 and well over half were built in the 1940s and 1950s. What changes once you cross 8 Mile is mostly underground. In most Detroit neighborhoods the sewer lateral leaves the back of the house and runs to a city collection pipe under the alley, and that pipe carries rain and sewage together.
Jobs that come up most in 48234 and 48205 basements
- Sewer camera inspection
DWSD’s own handbook suggests a camera look at the lateral every three to five years, and on a line that runs behind the house toward the alley it is the only way to see the whole run.
- Basement floor drain cleaning
On a combined sewer the floor drain is the lowest opening in the house, so a half-blocked one leaves standing water after every heavy rain. DWSD lists clearing floor drains as routine upkeep.
- Sewer line repair and inspection
When DWSD films the alley sewer and spots a defect where your lateral connects, the repair falls to the owner and starts with finding the break.
- Hydro jetting
The city handbook recommends jetting when a cleaning turns up large root balls, a common find where big backyard and street trees grow over clay laterals running toward the alley.
- Galvanized pipe replacement
With 1940s and 1950s builds making up more than half of both border ZIP codes, galvanized water piping is still common, and weak pressure at an upstairs tub is usually the first sign.
- Backwater valve installation
Water in a Detroit combined sewer can rise above the basement floor in a big storm. A valve on the building drain stops that backflow, once a camera shows the lateral behind it is sound.
- Sewer line replacement
Many Detroit laterals run to a sewer under the alley rather than the street, so replacing a collapsed clay or cast iron line near 8 Mile means planning the dig from the alley side.
- Burst pipe repair
Houses near 8 Mile from the 1940s and 1950s have supply lines with seventy-plus winters behind them, and a split line in a finished basement needs the damaged section cut out and replaced.
Alley laterals under 1940s and 1950s houses south of 8 Mile
About 60 percent of the homes in 48205 went up in the 1940s and 1950s, and 48234 is close behind at 56 percent. Most are single-family houses, and roughly half are owner-occupied, so we hear from landlords about as often as from owners. In houses from those decades we expect a cast iron stack and building drain, a clay tile lateral, and galvanized or early copper water lines.
DWSD’s basement flooding handbook lays out the rest. Very few Detroit homes have a separate storm line, most neighborhoods are on a combined sewer, and in a big storm the water level in the city pipe can rise above your basement floor. When DWSD crews clean and televise an alley sewer, they also record the spot where each private lateral ties in. If the video shows a problem with yours, the department mails a fix-it letter with a photo, and the owner is responsible for the repair. A sewer camera inspection from your basement cleanout shows how far the damage runs back toward the house.
Downspouts still tied into old drain tile feed that same combined pipe, and DWSD gives households a 25 percent green credit on the drainage charge once they’re disconnected. Sump water is another matter: the city’s building code bars pumping it into the sanitary sewer.
Down Hoover Road to 8 Mile from Stephens Rd
Our office is on Stephens Rd between 9 Mile and 10 Mile, about 0.2 mi west of Hoover Road, and the Detroit line is south of us. Hoover is our road to the border. It meets 8 Mile and continues south as Hoover Street into 48205, and the 48234 side is a run west along 8 Mile toward Van Dyke. We book visits near the border alongside our Warren calls and tell you on the phone where yours falls.
At the house we start in the basement with the floor drain, the main cleanout, the stack and the incoming water line. Then we work out where the lateral goes. DWSD puts most houses at least 75 feet from the city sewer, so the camera has a long run to the tie-in. If the line heads for the alley, we look for an outside cleanout and check whether it passes under a garage slab. Digging means paperwork: DWSD issues a Sewer Service Repair Permit for the lateral, and work that reaches public property needs a right-of-way permit as well. If the line is sound but the basement still takes water in storms, a backwater valve on the building drain is the usual next step.
Corridors and city offices behind a Detroit sewer job
- 8 Mile Road (M-102), the Wayne–Macomb county line that separates Detroit from Warren.
- Van Dyke (M-53), which runs from the 48234 side of Detroit north into Warren.
- Hoover Street, which carries M-97 north to 8 Mile, where the route continues as Groesbeck Highway.
- DWSD offices at 6425 Huber Street, listed in the department’s sewer service repair permit guide.
- BSEED, the city department that issues plumbing trade permits through its online eLAPS system.
BSEED handles plumbing permits, and its trade permit page sends anyone needing a water or sewer permit to DWSD, so a Detroit lateral replacement usually involves both offices before anyone digs. The alley matters too. DWSD’s Vactor trucks clean more than 800 feet of sewer from a single manhole, and the handbook warns that alleys sometimes have to be cleared before crews can reach one. Keeping the back fence line and any outside cleanout clear helps their crews and ours.
Getting to our office from Detroit
From 48205, take Hoover Street north across 8 Mile, where it becomes Hoover Road, and continue to Stephens Rd; from the 48234 side, follow 8 Mile east to Hoover first. Our office sits just west of Hoover Road between 9 Mile and 10 Mile.
11355 Stephens Rd, Warren, MI 48089
Get directions to our Warren officeDetroit plumbing questions
Which way does a Detroit sewer line usually run, to the street or the alley?
In most Detroit neighborhoods it runs out the back of the house to a city collection pipe under the alley, according to DWSD’s basement flooding handbook. An outside cleanout, if you have one, usually points the way. Our article on who owns the sewer line covers how responsibility usually splits.
What is a DWSD fix-it letter?
When DWSD cleans and televises a city sewer, it also films where private laterals connect. If the video shows a defect in yours, the department sends a letter with a photo of the problem, and the owner is responsible for fixing it. A camera run from the house side shows how much of the line needs work.
Have a plumbing problem in Detroit? Tell us the address and what's happening.
(207) 419-2600Near Detroit
- Plumber in HamtramckA 2-square-mile city inside Detroit where most homes predate 1940
- Plumber in Highland ParkPrewar homes on century-old water mains now being replaced
- Plumber in Harper WoodsA 1950s city on the Milk River drain system along I-94
- Plumber in EastpointeAcross 8 Mile in Macomb County, facing Detroit’s east side
- Wayne CountyDWSD permits, lead lines and the 2014 and 2021 storms
See every city we serve around Warren · More Wayne County cities · Who owns the sewer line between your house and the street · What causes basement backups during big storms
Last updated October 25, 2026