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Water and Wastewater

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sewage treatment plant with tanks and aerators

The Water/Wastewater Division is responsible for the operation and maintenance of the water distribution and wastewater collection systems within the Town of Tillsonburg. 

Residents who wish to connect to the municipal water system are permitted provided there are services available at the property line and there are no outstanding servicing fees.
If no connection is available at the property line, then you will need to contact the Customer Service Centre and a connection fee will apply.
 Water and wastewater rates

All residential, institutional, commercial and industrial customers pay a fixed monthly charge (based on the size of their water meter) and a volumetric charge (based on the amount of water used each month). This blending of fixed and usage charges gives customers the ability to control costs by reducing monthly usage.

As the owner of the water and wastewater system, Oxford County is responsible for establishing the Water and Wastewater Rates for Tillsonburg in consultation with Town staff, the public and consultants.

Water Distribution

The Town's water distribution system consists of approximately 140 km of watermain that is supplied by 12 well sites, 6 water treatment facilities and a two (2) million gallon underground reservoir.

Use the links below to learn more about water distribution in Tillsonburg.

Call before you dig

Planting a tree, building a deck or a fence? Contact ON1Call first to get a free locate of underground lines and pipes so you can dig safely. Remember you are liable for any damage or injury caused by interfering with any buried infrastructure.

Request your free locate online or call 1-800-400-2255. Open 24 hours a day, 7 days a week.

Drinking water

Tillsonburg's drinking water distribution system is owned by Oxford County and operated by the Town. To learn more about drinking water quality, see the Drinking Water pages on the Oxford County website.

If you have concerns about your drinking water, report it to the Customer Service Centre.

Watermain breaks

Watermain breaks usually result from external corrosion of the pipe and typically occur in the winter season as the surrounding soil expands and contracts with extreme weather changes.

A watermain break can have the appearance of a flooded roadway. Residents in the area can also experience a significant reduction in water pressure.

If you have a concern about a watermain, report it to the Customer Service Centre.

Frozen water services

In extremely cold temperatures it is possible for poorly insulated or shallow water services to freeze--resulting in reduced water pressure or even no water at all.

If you find that water service to your home has stopped, report it to the Customer Service Centre.

For more tips on what to do if your water service is frozen, download Frequently Asked Questions - Frozen Water Service.

Watermain and hydrant flushing

The Town conducts watermain and hydrant flushing on a regular basis throughout the year--typically in the spring and fall. This preventative maintenance ensures an acceptable water quality is maintained.

Residents may notice some cloudy or discoloured water when watermain flushing occurs. These temporary side effects are not hazardous to the public and can be cleared up by simply turning on the cold water taps to clear the system.

To ensure fire hydrants can be accessed in an emergency, please keep hydrants clear of snow, brush, garbage and vehicles at all times.



Wastewater Collection

The Town's wastewater collection system consists of approximately 110 km of sanitary mains and about 6,200 laterals.

Use the links below to learn more about wastewater collection in Tillsonburg.

Inspection and maintenance programs
Town staff regularly flush and inspect the sanitary sewer system.
Sewer backups

The most common cause of a backed up drains or basement flooding in your home is a blockage in the sewer pipe connecting your home to the sanitary main under the street. Blockages can be caused by:

  • tree roots growing into the service lateral pipe
  • too much fat, oil or grease buildup in the service lateral pipe
  • structural problems such as sagging or collapse of the service lateral pipe
Prevention tips
  • Place a strainer in the sink to catch food scraps and other solids for disposal
  • Scrape solidified grease and food scraps from cookware and plates into the garbage
  • Do not pour grease down the sink drain or toilet. It will cling to the sides of your pipe and build up over time.
  • Do not use your sink as a garbage disposal.
  • Do not flush foreign objects down the toilet or let them fall into the drain.

If you think your sewer service lateral is backed up, report it to the Customer Service Centre. Staff can investigate the problem using a camera, but you will be instructed to contact a plumber of your choice to address the problem.

Repair responsibility

The responsibility for sewer service repairs depends on where the issue is located in the system and what caused it. The responsibility chart below summarizes who is responsible for the various types of conditions of sewer lateral issues.


Service Lateral Condition







Blockage on Town Property  Town  Town   Town
Blockage on Town Property due to inapproprate material (i.e. toys) or other objects/issues originating from Private Property  Owner  Town   Owner
 Blockage on Private Property Owner  Town   Owner
 Root Blockage on Town Property with tree on Private Property Owner   Town Owner 
Root Blockage on Private Property with tree on Private Property  Owner   Town Owner 
Root Blockage on Private Property with tree on Property Line  Town  Town   Owner
 Root Blockage on Town Property with tree on Property Line  Town  Town  Town
Root Blockage on Town Property with tree on Town Property  Town   Town Town