If water is coming in now, call (207) 419-2600, say what you see, and we'll connect you with an independent plumber who covers the lakeshore and go over what to shut off in the meantime.
Lake St. Clair water, 1960s–80s houses and condo stacks
Canals, open lakefront and the mouth of the Clinton River all sit inside the township line. In 2019 the township supervisor said Lake St. Clair was the highest he had seen it in 30 years, with water creeping toward front doors. High water like that leans on sump pits, floor drains and sewer laterals at the same moment, and Macomb County drew federal flood declarations in 2014, 2021 and 2023 on top of it. Low lots along the canals feel it first.
Half the homes in Harrison Township were built between 1960 and 1989, and the median build year is 1980. Another 16 percent predate 1960. More than a quarter of the housing units sit in buildings with two or more units, so condos are a big piece of the township.
Those eras suggest typical materials, never certainties. A 1970s house usually has copper supply lines and cast-iron drains, and an older lake cottage may still hide galvanized steel. Cast iron scales from the inside, which shows up as slow drains and a lateral that backs up during a hard rain. In a condo, a split supply hose or a leaking tank can soak the unit below before anyone upstairs notices.


Lake high and the sump pit filling? Call (207) 419-2600
- Your call goes to an independent local plumbing company that does the work.
Repairs that fit lakeshore basements and condo units
These six services line up with the township's lake, its housing and its condos. If your pump cycles nonstop every spring, our guide on why a sump pump runs constantly helps you tell a busy pump from a failing one.

Sump pump repair and installation
Lake St. Clair reached front doors in Harrison Township in 2019, so a sump pump, a check valve and a battery backup that all work matter most in the wet years when the lake runs high.
Sump pump repair and installation: Read more
Basement flooding prevention
Macomb County drew federal flood declarations in 2014, 2021 and 2023, and low lakeshore lots here can get heavy rain and high water in the same season, so a backwater valve earns its place.
Basement flooding prevention: Read more
Water heater installation
Harrison Township requires a plumbing permit to replace a water heater, whether the tank sits in a ranch basement or a tight condo closet, and its inspector comes out Monday, Wednesday and Friday mornings.
Water heater installation: Read more
Sewer camera inspection
Half the homes here were built from 1960 to 1989, when cast-iron drains were typical, and a camera run shows how far that pipe has scaled or cracked before anyone talks about digging.
Sewer camera inspection: Read more
Leak detection
More than a quarter of Harrison Township's housing units are in buildings with two or more units, where a hidden supply leak in one condo can soak the ceiling of the neighbor below.
Leak detection: Read more
Frozen pipe repair
Canal-front and lakefront walls in Harrison Township take the full January wind off open water, so the supply line feeding an outside faucet on that side is a likely place for a freeze.
Frozen pipe repair: Read moreHow a visit works on a canal lot or in a lakeshore condo
Canal homes often have the water side out of reach, so the call starts with a few questions. Where is the cleanout? Where does the sump discharge leave the house? Can someone get to both from the street side? We pass your answers along so the plumber you're connected with knows what to bring.
Condos add a step. Ask your association whether it wants notice before anyone shuts a valve tied to a shared riser, because closing one can cut water to several units. In January, an outside wall that faces open water is the likely spot for a frozen line, so mention which faucet stopped.

At the house, the plumber looks at the pit, drain or frozen section, explains the choices and what moves the cost, and starts only once you approve. Afterward they run the water or the pump to prove the fix and clean up.
Selfridge, the Metropark and the township water and permit desks
Lake St. Clair Metropark runs along the shore, and Selfridge Air National Guard Base, built in 1917, fills the north end. ZIP 48045 covers the whole township. If you live just over the line, see the pages for Clinton Township and Chesterfield Township.
Water for about 26,000 residents comes from the Great Lakes Water Authority's Lake Huron and Northeast plants, though roughly 80 customers draw from the City of Mt. Clemens plant, which sits inside the township. The 2024 report lists three known lead service lines, all replaced, and an EGLE asset-management grant lets the township dig up sample lines to confirm its records. Wastewater runs into the county's Macomb Interceptor Drain Drainage District and on to Detroit for treatment.
Harrison Township treats a water heater swap as permitted plumbing. The Building Department requires a plumbing permit for the replacement, takes applications through BS&A Online, and sends its plumbing inspector out Monday, Wednesday and Friday mornings. If you're weighing a new tank, our water heater installation page covers sizing and venting choices.

Harrison Township plumbing questions
Do I need a permit to replace a water heater in Harrison Township?
Yes. The township's Building Department lists a plumbing permit as required for a water heater replacement, and permits are filed through BS&A Online. Inspections happen Monday, Wednesday and Friday mornings. Under Michigan rules the permit is pulled by a licensed plumbing contractor, or by a homeowner doing the work in the single-family house they live in.
Are there lead water lines in Harrison Township?
No known ones. The township's 2024 water quality report says it had three known lead service lines and all three were removed and replaced, leaving none known among about 7,990 water services. A state grant also pays for digging up sample lines to confirm the records. To check your own pipe, look where it enters before the meter.
Why does my sump pump run so much in spring near the lake?
Snowmelt, spring rain and a high lake can all feed the drain tile around a basement at once, so a pump that cycles often in April may simply be busy. Worry if it runs with no water coming in, kicks on every few seconds, or the pit keeps rising while it runs. Those signs point to a stuck float, a failed check valve or a pump that's too small for the flow.



