Macomb County · Detroit–Warren–Dearborn metro
Plumbing help in Warren, MI
Older PipesFrozen Pipes
Warren is a mostly owner-occupied suburb of 1950s and '60s homes: over 85% predate 1980. It buys Great Lakes water from GLWA, and aging pipe, basement drains and Michigan winters make up most local plumbing work.
- Median home built
- 1964
- Built before 1980
- 86%
- Owner-occupied
- 71%
- Water hardness
- See below
- Winter
- Long, hard freezes
- Plumbing code
- Local
What Warren homeowners call plumbers about
- Sewer Backup
Heavy storms push water back through basement floor drains.
- Repiping
Mid-century homes often have galvanized supply lines.
- Frozen Pipe Repair
Michigan winters freeze pipes in exterior walls and crawl spaces.
What's behind the walls of Warren's older homes
The median home in Warren was built in 1964, and 86% of homes predate 1980. Homes from that era were typically built with copper or galvanized supply, cast iron drains, clay or cast iron sewer laterals.
- Galvanized steel supply (1900–1960)
- Copper supply (1950–2000)
- Polybutylene (some homes) (1978–1996)
- PEX / CPVC (1995–today)
Protecting pipes through a Warren winter
Long, hard freezes · 86% of Warren homes were built before 1980
Emergency plumbing in Warren
Call (833) 878-1592Shut off your main water supply if it's safe to do so. The emergencies below are listed most likely first for Warren homes, based on local conditions.
Where Warren's water comes from
Warren buys its drinking water from the Great Lakes Water Authority, which treats water drawn from the Detroit River and Great Lakes system. [1]
Michigan's Lead and Copper Rule requires water systems to replace all lead service lines, the full line from main to home, at the utility's cost, generally within 20 years. [2]
Plumbing services for Warren homes
Warren plumbing questions
Where does Warren's water come from?
The Great Lakes Water Authority, treating Great Lakes water.
Does Warren replace lead service lines?
Michigan requires water systems to replace all lead lines at their cost. Check Warren's service line material page for your address.
How do I stop basement backups in Warren?
A backwater valve on the main line and a tested sump pump are the usual protections.
How do I check a Warren plumber?
Verify the license with Michigan LARA's Bureau of Construction Codes.
Do mid-century Warren homes need repiping?
If they still have galvanized supply lines with low pressure or rusty water, repiping is usually the lasting fix.
Sources (3)
- U.S. Census Bureau, ACS 2024 1-year (B25035) · checked 2026-10-01
- City of Warren, Water Quality Report · checked 2026-10-01
- Michigan EGLE, Lead and Copper Rule · checked 2026-10-01