To clear a badly clogged drain with standing water, remove excess water, plunge firmly for several cycles, and use a hand drain snake if needed while avoiding chemical drain cleaners that can damage pipes. Most severe clogs come from organic debris that accumulates in pipes, which can lead to foul odors and health concerns. When multiple fixtures drain slowly or a toilet needs frequent plunging, there are much bigger problems ahead. Professional drain cleaning from Oasis Plumbing, Heating & Cooling prevents blockages, and our processes adhere to industry-recommended protocols. Our licensed team utilizes cutting-edge technology to pinpoint leaks, clogs, and failures. Our plumbers handle these clogs across Chicagoland, including the Evanston area. Technicians remain available for 24/7 emergency plumbing services.
If DIY steps don’t restore flow, try these next actions:
- Stop using nearby fixtures and check if other drains are backing up.
- Use a wet/dry vacuum to pull water, then remove and clean the trap if accessible.
- Call for service if water returns quickly or affects multiple drains.
If water rises in other drains or you see sewage, stop and call a professional immediately.
Updated: 2026-09-06
Need help in Evanston, IL? Call (773) 320-5395 or book online. They were very punctual, thorough and explained everything that was happening. — Derek Z.