Beyond Basic Plumbing
Specialized Plumbing Services
From sump pump protection to backflow prevention, gas line work to septic maintenance — Darwyn's Plumbing handles the specialized services many plumbers won't take on. 27+ years of experience across the St. Louis Metro-East area.
Specialized Services
Sump Pump Installation & Repair
Basement flooding can be catastrophic. We install, repair, and replace sump pumps — including battery backup systems that work even during power outages. We size the pump correctly for your pit and water table depth.
Backflow Prevention
Backflow devices prevent contaminated water from flowing back into your clean water supply. We install, test, and certify backflow prevention assemblies as required by local code.
Gas Line Services
We detect and repair gas leaks, run new gas lines for ranges, grills, generators, and fire pits, and perform gas line pressure tests. Licensed for both residential and commercial gas work in Illinois.
Septic System Service
For homes on septic systems, we repair or replace distribution boxes, pump tanks, broken lines, and failing components. We coordinate with septic contractors for full system work.
Mobile & Prefab Home Plumbing
Many plumbers won't work on manufactured or mobile homes — we do. These homes have unique plumbing systems and requirements, and we have experience with all of them.
Main Water Shutoff Replacement
Old ball valves and gate valves fail when you need them most. We replace aging main shutoffs with reliable new valves so you can always stop the water in an emergency.
Sump Pump: Your Basement's Best Defense
Primary Sump Pump
Electric-powered pump that automatically activates when water rises in the pit. We size and install units rated for your specific water intrusion level.
Battery Backup Pump
When the power goes out during a storm (exactly when you need it most), a battery backup pump keeps your basement dry. Essential for heavy rain areas.
Combination Systems
A primary pump plus a battery backup gives you the maximum protection. We install combination units that monitor water levels and switch automatically.
⚠️ Test Your Sump Pump Before Storm Season
Pour water into the sump pit and watch for the float to trigger the pump. If it doesn't activate, or if the pump runs but water level doesn't drop, call us. A $150 pump replacement is far cheaper than a flooded basement.
Need a Specialized Plumbing Service?
We handle the jobs other plumbers won't. Call for a free estimate across the Metro-East area.
Call (618) 337-9322