South Cook suburb with mid-century housing stock; galvanized supply pipes and clay tile sewer systems are common in older residential blocks throughout the city. Downing Plumbing has served Cook County since 1950 — licensed, insured, and locally owned.
COOK COUNTY, ILLINOIS
Homes built in the 1950s through 1970s were well constructed, but their plumbing systems were never meant to run indefinitely without service. In Markham, 50-to-70-year-old clay tile sewer lines have seen decades of root intrusion at every joint. Galvanized supply risers inside the walls have been rusting from the inside — restricting flow and quietly contaminating water. Original water heaters and sump pumps from this era are long past their design life. Cast iron drain systems carry significant scale buildup that restricts flow and causes recurring slow drains. Downing Plumbing understands what these homes need and how to address it systematically — whether you're dealing with one specific problem or planning a broader update.
Downing Plumbing & Heating, Inc. has been the trusted plumber for Northwest Indiana and south suburban Chicago since 1950. We're locally owned, licensed in both Indiana and Illinois, and our trucks run out of Merrillville — within reach of every community we serve.
PLUMBING SERVICES IN MARKHAM, IL
From emergency repairs to planned replacements — we handle it all, correctly, the first time.
Downing Plumbing has served Cook County since 1950. Call us for same-day service or schedule online.
LOCAL COVERAGE
Downing Plumbing holds an active Illinois plumbing license and serves the south and southwest suburbs of Cook County. Our service area covers the Calumet Region border communities of Burnham, Calumet City, and Lansing, the south suburban corridor including South Holland, Dolton, Homewood, and Flossmoor, and the southwest suburbs extending to Tinley Park, Orland Park, and Palos Heights. Our Illinois license allows us to complete all permitted plumbing work in Cook County. Response times to most Cook County communities run 35–65 minutes from our Merrillville base.
Illinois plumbing license: 055-019996
NEARBY COMMUNITIES
Downing Plumbing covers the entire region — not just Markham. If you're in a neighboring community, we serve you too.
CUSTOMER REVIEWS
See what customers are saying about Downing Plumbing's professional plumbing, drain cleaning, sewer, and water heater services throughout Northwest Indiana.
"Exceptional service in an emergency situation! Incredible organization to deal with!!"
"Same day service. Knowledgeable craftsmen did excellent work. No complaints."
"The installation of my new water heater was done with courtesy and efficiency."
READY TO GET STARTED?
Whether you need drain cleaning, sewer repair, water heater service, sump pump repairs, or emergency plumbing help, Downing Plumbing is ready to help.
