Sewer Cleanouts and Backups

Quick Contact Numbers

Division Number
Engineering Transportation 410-535-2204
Project Management 410-535-2204
Water and Sewer 410-535-1600 Ext. 2554
Highway Maintenance 410-535-0905
Solid Waste 410-326-0210
Fleet Maintenance 410-535-0167

Keeping Your System Operating Smoothly

A sewer cleanout is a pipe covered by a cap that rises from the sewer lateral line to about four inches above ground level near the property line. If the cleanout is buried or hidden, the property owner is responsible for making it readily accessible. If a cleanout is not present, one should be installed at the property line by a licensed plumber.

The county is responsible for maintaining the wastewater lines from the main trunk to the sewer cleanout at the property line. In the event of a sewer backup, call the county first at 410-535-1600, ext. 2329, and a technician will diagnose the problem. If the sewer line and main are found to be clear or if the location lacks a property line cleanout, the property owner is responsible for repairing the blockage.

What Not to Flush

Help keep the sewer system functioning properly. These items should not be disposed of through any drain:

  • All paint products including thinners or any other toxic substance
  • Antifreeze
  • Bones
  • Cat litter (Including flushable cat litter)
  • Cleaning wipes
  • Clothing or cloth of any kind
  • Diapers
  • Fats
  • Flammable or explosive liquids and/or solids
  • Gasoline
  • Glass
  • Grease
  • Hair clippings
  • Metal
  • Oils
  • Paper towels
  • Plastic
  • Sand
  • Shells
  • Small animals
  • Strong chemicals (acidic or caustic corrosive substances)
  • Wood

Septic tank pumpings or materials from holding tanks, grease traps, port-a-potties or cesspools must be sent to an approved treatment facility via licensed haulers.