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What To Do If You Have a Sewer Backup
Who to Contact in Case of a Sewer Backup
Call the City at 414-302-8800 (7am to 3pm Weekdays) or 414-302-8000 (After Hours/Non-Emergency Police) to verify the City's Sewer Main is flowing.  The City will check if there is a problem in the sanitary sewer main lines.  By calling us first, you may save yourself a plumbing bill.

This chart shows what to do in the event of a sanitary sewer backup.

Sewer Backup Flowchart

Your lateral may be eligible for a lateral rehab reimbursement program.  Please contact the Engineering Department for more information. 

Diagram of Your Sewer Lateral

Your home’s plumbing is connected to the public wastewater system through an underground pipe called a “private sewer lateral.” As the property owner, you own this pipe and are responsible for keeping it flowing freely and repairing cracks and breaks. Laterals do not necessarily end at the curb or property line, but extend all the way to the public sewer main, which often is located in the middle of the street. The City maintains the public sewer.

A diagram of typical sewer lateral in West Allis is shown here:

Sewer Lateral Diagram

Reducing the Risk of Sewer Lateral Backups

These steps can help you reduce the risk of the unpleasant and usually costly experience of a sewage backup in your home.

  • Televising your service is the best way to determine the condition of your entire lateral. A video inspection may reveal cracks, breaks, offsets, and root intrusion. The pipe may need to be cleaned, repaired, or replaced.
  • If you have large trees growing near your sewer lateral, you may want to use a root treatment periodically to make sure your lateral is not becoming blocked. Root treatment can be purchased at most hardware and home improvement stores. You may also need to hire a pipe cleaning specialist or a plumber to remove the roots completely.
  • Do not pour fats, oil or grease down drains. Pour into a coffee can or similar container, allowing them to cool and solidify, and deposit in the trash. Do not dispose of coffee grounds or other heavy solids down the drain.
  • Do not flush wipes, diapers or feminine hygiene products, even if they are labeled “flushable.” As homes age, roots often infiltrate sewer laterals. So-called flushable products catch on these intrusions, or on grease build-up, and form clogs. (Watch videos from Consumer Reports and the Water Environment Federation about so-called flushable products.)
  • MMSD also has great information on their Basement Connection Website

     http://basementconnection.mmsd.com/


Engineering Department
City Hall Room 212
(414) 302-8360
(414) 302-8366 fax

Interim City Engineer
Peter Daniels

[Staff Directory >>]

West Allis City Hall
7525 W. Greenfield Ave
West Allis, WI 53214
8:00 am - 5:00 pm M-F
[Map & Directions >>]

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