Completed Projects

Our Work Speaks
for Itself

Real plumbing projects completed across St. Louis and St. Charles County — delivered with craftsmanship, care, and a commitment to quality.

Our Portfolio

Craftsmanship You Can See

Every project is an opportunity to deliver clean, reliable plumbing solutions. Here's a look at some of our recent work across St. Louis and St. Charles County.

  • New water heater and expansion tank installation with copper piping
    Water Heater
    St. Peters, MO

    Water Heater & Expansion Tank Installation

    Full water heater replacement including a new expansion tank, updated copper supply lines, and proper pressure relief valve routing. System brought fully up to current code with clean, professional copper work throughout.

    "Professional, honest, and extremely clean work throughout the entire install. Mark explained every step and left the space spotless."

    — Dave K., St. Peters
  • Excavated sewer line replacement — new PVC pipe in trench
    Sewer & Drain
    St. Charles, MO

    Sewer Line Replacement

    Excavated and replaced a failing sewer lateral with new PVC pipe. Minimal yard disruption, backfilled and graded same day. Drains restored to full flow.

  • Bathtub faucet valve replacement — before and after
    Bathroom
    Lake St. Louis, MO

    Bathtub Faucet & Valve Replacement

    Replaced a failing tub faucet and cartridge valve. Access panel opened, old valve removed, new assembly installed and sealed — no tile damage, clean finish.

    "Mark showed up on time and communicated throughout. The repair passed inspection without a single callback."

    — Rachel M., Lake St. Louis
  • New copper supply lines and shutoff valves installed in utility room
    Pipe & Valve Work
    Wentzville, MO

    Copper Repipe & Shutoff Valve Upgrade

    Replaced corroded galvanized supply lines with new copper, installed quality ball valve shutoffs, and added a pressure gauge for system monitoring. Clean, organized work throughout.

  • Emergency pipe repair in crawl space — copper line being cut and replaced
    Emergency
    O'Fallon, MO

    Emergency Crawl Space Pipe Repair

    Same-day response to a leaking copper supply line in a tight crawl space. Cut out the damaged section, soldered in new copper, and pressure-tested before leaving the job.

    "Called at 8 PM and Mark was here by 9. Fixed everything quickly and didn't overcharge. Absolute lifesaver."

    — Tom B., O'Fallon
  • Shower valve replacement — before and after with new copper rough-in
    Bathroom
    St. Charles, MO

    Shower Valve Replacement

    Replaced a leaking shower valve with a new pressure-balance cartridge unit. New copper rough-in, access panel sealed, and trim kit installed — no tile damage.

  • Blocked drain pipe joint showing buildup — before cleaning and repair
    Sewer & Drain
    Wentzville, MO

    Drain Line Blockage & Repair

    Identified a heavily blocked drain joint causing recurring backups. Cleared the obstruction, replaced the compromised coupling, and verified full flow restoration.

  • Licensed & Insured
  • 22+ Years Experience
  • 5.0 Google Rating
  • Same-Day Service Available

Need Reliable Plumbing Service?

Contact Landmark Plumbing today for honest, professional plumbing solutions. We serve homeowners and businesses across St. Louis and St. Charles County.

Call (636) 427-7027 Request Service