Sewer Blockages

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The Wastewater Collection area deals with blockages in the sewer line main located in the street or alley. Blockages are most often caused by a variety of items people put down their drains and by tree roots. The good news is that this type of blockage is preventable!  Read more here. 

LateralLineBlockageTree Roots

Tree roots can cause sewer blockages and a major headache for property owners. A pipe joint or crack in a sewer line can create an opening for roots. One way to help avoid root intrusion is to be aware of the location of sewer lines on your property and to plant trees more than 10 feet away.


Fats, oil and grease (FOG) in liquid form may not seem harmful, but as it cools, it congeals and hardens sticking to the inner lining of the sewer line.  This restricts the wastewater flow, eventually causing a blockage - and a mess!  Prevent problems by pouring fat, oil and grease in a container and placing it in the trash (don't wash FOG down the drain); wipe FOG from pans and dishes; and place a strainer in the sink to catch debris which can cause a future blockage.

If you have a large amount of cooking oil to dispose of, recycle it at one of our oil recycling locations.

Wipes and Personal Items

Disposable does not always mean flushable. Cleaning wipes and baby wipes do not break apart like toilet tissue.  They get stuck in sewer pipes and sewer pumping equipment.

Be kind to your plumbing. Put used wipes and sanitary products in the trash. Costs for hiring a plumber to unclog your private sewer line typically range from  $75 to $350. These costs do not include the time it takes you to clean up the sewage that may have backed up or the time spent calling and waiting for a plumber.   

What To Do When There Is a Blockage

If you suspect a root intrusion in your sewer line or a blockage caused by items that have been flushed or put down the drain, contact a licensed plumber for the best method of addressing the problem. 

If a licensed plumber advises that the blockage or problem lies in the sewer main line, please contact Wastewater Collection at 480-644-2262.  A fee will be assessed for the City to come onto your property to locate, identify and evaluate the issue with your sewer service line and for attempting to restore service.  A signed Sewer Blockage Waiver Form will also be required.

Service Line Warranty Program

Service Line Warranties of America is offering Mesa residents an OPTIONAL warranty program for service line repairs.  The warranty program covers repairs or replacements which occur on the outside sewer service line (lateral line) that runs from your home to the point where the City is responsible for repairs (main line.)  More information about this optional program is available here.

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