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New Facility

Treatment Plant

The Municipality of Mississippi Mills has successfully completed the construction of a new wastewater treatment plant at 212 Wolf Grove Road on the site of the former wastewater lagoons.  This $24.7 million dollar facility was funded as part of a successful grant application submitted by the Municipality under the Building Canada Fund (2010).  This grant program saw the local municipality contribute 1/3rd of the overall project cost with the balance of 2/3rd funding provided by the provincial and federal governments.  The new wastewater treatment plant was designed by Genivar Consultants and construction was completed by North America Construction (1993) Ltd.  The official commissioning date of the new facility was July 25, 2012


For the Community

The new plant presently offers capacity to serve the growth needs of the Almonte Ward through to 2031 when the population of the serviced area is expected to reach over 8,000.  The new sewage plant will also provide environmentally responsible treatment alternatives for septage materials which are pumped and hauled from private septic systems in the rural areas of Pakenham and Ramsay.  In addition, this new facility will serve to address the following community needs:


Resolve health and safety concerns regarding the structural integrity of the lagoons.


Meeting the current provincial water quality requirements for effluent discharges to the Mississippi River.


Increase energy efficiency and environmental performance.


Addressing the needs of long term and sustainable growth.


Provide an environmentally responsible treatment alternative to address hauled sewage other than the practice of land applying untreated wastes.


Improve air quality concerns in the area of the existing lagoon facilities.


Hauled Sewage Waste Fees and Rates

Annual Hauler Permit Fee – $267.53

Annual Hauler Permit Revision Fee – $148.27

Liquid Sewage (holding tank waste – generated in Mississippi Mills) – $2.93/cubic metre

Liquid Sewage (septic waste – generated in Mississippi Mills) – $9.61/cubic metre

Liquid Sewage Material (holding tank and septic waste – generated outside of Mississippi Mills) – $23.81/cubic metre

Ready to make your first deposit?

Mississippi Mills

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3131 Old Perth Road
Almonte, ON K0A 1A0
Deposit Location
212 Wolf Grove Rd
Almonte, ON K0A 1A0
Environmental Compliance Coordinator
613-256-2064 x235



    Whether you want more information or have something to tell us, you can also call 613-256-2064 x235

    March 20, 2020 


    Dear Hauler

    Due to the recent events with the COVID-19 pandemic, in the interest of protecting and limiting staff exposure to sewage and outside contractors, the Municipality will be temporarily suspending operations of the septage receiving program to ensure staff remain healthy and are able to provide continuity of service as it relates to the Municipality's Wastewater Treatment Plant's mandated regulatory compliance

    The Municipality will contact you when operations of the septage receiving program will resume

    We thank you for your patience and understanding during this uncertain time


    Abby Armstrong, BA (Env.)
    Environmental Compliance Coordinator
    Management Official/Inspector
    Roads & Public Works Department
    Municipality of Mississippi Mills
    613-256-2064 ext. 235

    You can download a copy of this notice here