Posted in the Announcements page 2 months ago on Thursday, July 23, 2020.

Oxford County is upgrading one of the lagoon cells at the Tavistock Wastewater Treatment Plant (WWTP). Regular maintenance is needed to ensure the lagoon system is operating efficiently and protects the local ecosystem.

What we’ve done since our last update

In response to community feedback about odour, we paused construction in the spring to look for additional measures we could take to address this concern.

  • We temporarily returned Cell 1 to its normal operating capacity to manage odours to the degree possible. We used Bioxide (calcium nitrate) and hydrogen peroxide to more quickly restore the natural microbial biological action that is needed in the lagoon cell to most effectively break down sewage.
  • In July, we expanded our odour control system to include a new vapour pipeline system along the lagoon property line that blows a dry mist odour neutralizer through pipelines and into the air to bind with odourous materials. This expanded system is intended to provide a more effective and longer lasting odor neutralizer that can cover a wider area around the lagoon cells.
  • All sewage flows to the Tavistock WWTP are now being diverted into Cell 2. We have relocated surface aerators from Lagoon Cell 1 to Cell 2 to boost performance of this cell to prepare to restart construction on Cell 1. We’ve also set up an automated dosing system for Bioxide for Cell 2 to enhance its biological performance (and odour management capacity) during peak times.
  • We have left extra aeration time for sewage to break down in Lagoon Cell 1 before resuming construction.

Managing odour as we restart construction

Later this month, we will begin transferring treated sewage in Lagoon Cell 1 into Lagoon Cell 2. Once Cell 1 is emptied, active work can then begin to dry and remove the remaining biosolids over the latter part of the summer and early fall. The biosolids will need some time to naturally dry out and odours can be present when biosolids are first exposed to air.

In addition to the expanded vapour pipeline system, we are using chemical treatment enhancers to boost operational performance of the lagoon (Bioxide additions to Cell 2) to manage odour to the degree possible. We have also made preparations to apply thickening agents or other materials directly to the biosolids to help speed up the drying process as appropriate. We are also exploring other processes for removing biosolids that may allow a shorter drying time so that we can move them offsite sooner.

Moving forward

Oxford County is committed to the health and safety of residents and the environment. As we have explained, all operational practices during construction were reviewed by the Ministry of the Environment, Conservation and Parks before undertaking these essential capital upgrades, which are required to ensure the lagoon’s continued safe and effective operation.

We thank the community for its patience as we continue our work at the Tavistock WWTP while working to address your concerns. For more information on this project:

Visit our project information page at

Jesse Keith, P.Eng., Project Engineer
1-866-537-7778, ext. 3194

Alex Brown, C. Tech, Construction Coordinator
1-866-537-7778, ext. 3138

(For map with Cell 1 Vapour System Location see attached PDF file)

Posted 3 days ago.

Safe & Well Oxford is an initiative launched by municipalities across Oxford County, including The Townships of Blandford-Blenheim, East Zorra-Tavistock, Norwich, Zorra and Southwest Oxford, together with the Town of Ingersoll, the Town of Tillsonburg, and the City of Woodstock. The project aims to understand the complex issues facing urban and rural communities more than ever, in particular those that put a strain on healthcare and social systems, protective services, and overall community health and well-being.

As part of the Police Services Act, municipalities are required to develop and adopt a Community Safety & Well-being Plan by 2021 that addresses priority community risks with proactive, integrated strategies.

Working in partnership with an advisory committee with representation from police and local service providers in health / mental health, education, community and social services, and children and youth services, the municipalities will create a plan to improve the overall well-being of their communities and enhance the lives of residents.

The unprecedented situation caused by the COVID-19 pandemic underscores the need to plan for and protect the health, resiliency and vitality of community and economic systems.  The hope for this plan is to help create safer, healthier and more vibrant communities across Oxford, which is more important today than ever before.  That’s why we want to hear from our local community members. It’s important that our residents participate and share their insights so we can understand their concerns and hopes for their local community and the county overall, in particular as we work together to deal with the challenges of COVID-19.

From September to December 2020, residents from Blandford-Blenheim, East Zorra-Tavistock, Ingersoll, Norwich, Tillsonburg, Woodstock, Zorra and South-West Oxford are invited to participate through a survey.

Residents from municipalities across Oxford can take the short survey and learn more at:

Safe and Well Oxford is led by a coordinating committee of Clerks in partnership with an advisory committee with representatives from across Oxford municipalities, including police and emergency services, health care, social services and community groups, working together to develop and adopt a Community Safety & Well-being Plan.

Posted 22 days ago.

Reminder - Property taxes are due Monday August 31st. The municipality offers many options for paying your bill - please visit this link for details. 

Posted 25 days ago.
Tavistock Wastewater
Treatment Plant Upgrades
Oxford County continues its work on upgrading Lagoon Cell 1 at the Tavistock Wastewater Treatment Plant (WWTP).
This work is needed to ensure the lagoon system continues to operate efficiently and protect the local ecosystem into the future.
What we’ve done since our last update:
In our last update, we explained that construction work was restarting on the lagoon system. Since that time:
• The liquid sewage in Lagoon Cell 1 has been pumped into Lagoon Cell 2. During this period, the submerged aerators in Cell 1 remained active to help mitigate odour from this process. We continue to monitor Lagoon Cell 2 as it takes on additional load.
• Calcium nitrate has been applied to the exposed lagoon slopes where the remaining biosolids are drying out. This helps manage odour from the drying process, during which smell can be the strongest.
• We continue to operate the vapour pipeline system along the lagoon property line. This technology blows a dry mist odour neutralizer through pipelines and into the air to bind with odourous materials.

Upcoming work

• The drying process for the biosolids from Lagoon Cell 1 continues in the coming weeks, and any remaining liquids that accumulate will be pumped into Cell 2.
If you notice odour beyond what is typical, please call 1-866-537-7778, ext. 3194.

• The existing aeration system in Lagoon Cell 1 will be disengaged and removed.
• Biosolids along the walls and bottom of Cell 1 will be excavated into windrows to facilitate drying.
• Once sufficiently dried, biosolids will be removed and transported for off-site disposal. Trucks will haul the biosolids materials along 13th Line to Maplewood Sideroad to County Road 59 (south).
• Construction work to stabilize and upgrade the lagoon cell slopes and replace the aeration system (Cell 1) will begin in September and extend into early fall. Any odours resulting from construction should have subsided by this stage.

Moving forward

Oxford County will continue to put health and safety first during this project. All operational practices during construction were reviewed by the Ministry of the Environment, Conservation and Parks before work began.
We thank the community for its understanding while the County completes the required upgrades at the Tavistock
WWTP. For more information about this project, please visit or contact:

Jesse Keith, P.Eng.
Project Engineer
1-866-537-7778 x 3194
Alex Brown, C. Tech
Construction Coordinator
1-866-537-7778 x 3138