Environmental assessments

The City of London is developing an updated Pollution Prevention Control Plan (PPCP). The PPCP will be a 5-year action plan that outlines remediation activities and strategies to proactively manage the wastewater system in London, while demonstrating that the wastewater system meets the requirements set out by the Ministry of the Environment, Conservation, and Parks.

Status: On-going

Following Council approval and public comments, the final project report will be finalized ahead of submission to the Ministry of Environment, Conservation and Parks.

Visit the Pollution Prevention Control Plan project page

The Biosolids Management Master Plan is a long-term plan that will look at how the City is currently managing and treating biosolids at our five wastewater treatment plants and guides how we will continue to meet the demands of our growing community over the next 30 years.

Status: On-going

Project file to be posted in 2026. Detailed Design phases to begin in 2027 and anticipated to be completed in 2028. Construction phases to begin in 2029.

Visit the biosolids management master plan project page

The City of London is undertaking a Wastewater Treatment Operations Master Plan to develop a long-term plan for the City’s wastewater infrastructure, including its pumping stations and treatment plants.

Status: On-going

VISIT THE WASTEWATER TREATMENT OPERATIONS MASTER PLAN PAGE

VISIT THE WASTEWATER TREATMENT OPERATIONS GET INVOLVED PAGE

The Meadowlily Road Area Environmental Assessment examined servicing and infrastructure solutions to support future development in the Meadowlily Road area. The study evaluated alternative sanitary servicing strategies, including a new municipal pumping station, as well as options to improve water, stormwater, and recreational pathway connections, consistent with the Cycling Master Plan and the Municipal Class Environmental Assessment process.

Status: On-going 

Following Council approval and public comments, the project report will be finalized ahead of submission to the Ministry of Environment, Conservation and Parks.

Visit the Meadowlily Road Area Environmental Assessment Study project page

A portion of the Pottersburg Creek Trunk Sanitary Sewer is in poor condition between the Clarke Road Sanitary Pumping Station and where Pottersburg Creek crosses Dundas Street. Due to accessibility constraints of the existing location of the trunk sewer (located along Pottersburg Creek, and passing through multiple private properties), the City has proposed to realign the Pottersburg Creek Trunk Sanitary Sewer to locate it within City-owned right of way.

Status: On-going

Environmental Assessment, detailed design and construction of Phases 1 and 2 are complete. Detailed Design of Phase 3 is ongoing.

Visit the pottersburg creek trunk sanitary sewer Get Involved page

Visit the Pottersburg Creek Trunk Sanitary Sewer Project page

To plan for the future, the City is developing a long term Residual Waste Disposal Strategy. The Strategy involves the development of a long-term plan to manage residual waste and involves completion of an Individual Environmental Assessment (EA) as prescribed by the Ministry of Environment, Conservation and Parks (MECP). The individual EA requires approval by the Minister of Environment, Conservation and Parks.

Status: Complete

First phase of construction is expected to commence later in 2026.

Get Involved

The Carling Creek Stormwater Management Master Plan and Municipal Class Environmental Assessment study examined long-term stormwater management solutions within the Carling Creek subwatershed in the City of London’s urban core. The study evaluated a range of alternatives to address stormwater servicing deficiencies, surface flooding, and infrastructure renewal, including strategic infrastructure upgrades, regional stormwater management systems, and Low Impact Development measures. The recommended approaches were assessed based on level of service, constructability, cost, environmental impacts, and climate change adaptability, in accordance with the Municipal Class Environmental Assessment process.

Status: Complete

Awaiting finalization of environmental assessment. Detailed Design expected to be completed in 2026, and construction in 2028.

View the Carling Creek Get Involved Page

The Dingman Creek subwatershed is located in Middlesex County with 74% of the area within the City of London. The Dingman Creek Environmental Assessment is the most important stormwater study that will be completed by the City for the next 15 years. The recommendations of the Dingman Creek Environmental Assessment are intended to mitigate the impact of future development on water resources and to remediate the subwatershed, with consideration for current and potential flooding, erosion concerns, as well as wildlife/aquatic habitat and natural corridor enhancement.

Status: On-going

Floodline hazard update to be adopted in 2026. Environmental Assessment to be completed December 2026.

Visit the Dingman Creek project page

This study examines 96 hectares of future development lands in the Kilally neighbourhood in London’s north-east end. This study assesses natural heritage, archeological, geotechnical and hydrogeological site conditions to ensure a holistic stormwater management approach to servicing the area.

Status: Complete

Environmental assessment is complete. Stormwater Management Ponds on hold pending completion of development files. Trunk storm sewer to be incorporated in Killaly road works in 2026.

Visit the Kilally south, east basin study project page

The Adelaide Street North Environmental Assessment was initiated to:

• identify and evaluate a range of alternative solutions to accommodate growing traffic volumes along this corridor, including intersection improvements (particularly at Sunningdale Road), active transportation and transit improvements
• review and develop a design that will be consistent with the visions and policies of the 2030 Transportation Master Plan

Status: Complete

Environmental assessment is complete. Detailed Design and Construction to occur beyond 2029.

Visit the Adelaide Street North environmental assessment project page

The Bradley Avenue Extension Project examined improvements to the transportation corridor between Wharncliffe Road South and Jalna Boulevard to support safer travel, increased capacity, and future growth in the area. The project recommended construction of a four-lane complete street, including roadway widening, new in-boulevard bike paths, sidewalks, street lighting, landscaping, upgraded underground infrastructure, and enhanced stormwater management, delivered in coordination with the White Oaks Tributary Complete Corridor.

Status: Complete

Environmental assessment and Detailed Design are complete. Construction to be completed in 2027.

Visit the Bradley Avenue Extension Project Get Involved Page 

The Bostwick Road Environmental Assessment was initiated to consider realigning Bostwick Road west of Wharncliffe Road to increase capacity, accessibility and better serve all areas of the city – changes that were previously recommended by the City’s Transportation Master Plan and the Southwest Area Plan.

Status: Complete

Environmental assessment is complete. Detailed Design expected to be completed 2026. Construction is scheduled for 2027/2028.

Status: Complete

Environmental assessment is complete. Detailed Design expected to be completed 2026. Construction is scheduled for 2027/2028.

Visit the Bostwick Road Environmental Assessment project page

Through the Commissioners Road West Realignment Environmental Assessment, the project team looked at the possibility of realigning Commissioners Road west at the intersection of Springbank Drive and Byron Baseline Road to Cranbrook Road.

Status: Complete

Environmental assessment is complete. Detailed Design and construction are expected to begin in 2044.

Visit the Commissioners Road West Realignment Environmental Assessment project page

Due to London's growth, the City is looking at solutions to help accommodate the increasing amount of traffic by improving this intersection and addressing the safety concerns of pedestrians, cyclists and motorists.

Status: Complete

Environmental assessment is complete. Detailed Design is underway and construction is expected to begin in 2028.

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The Highbury and Hamilton Road Intersection Environmental Assessment explored a variety of planning solutions to address the challenges in the area. Through the Environmental Study Report, intersection improvements were recommended that aligned with the Transportation Master Plan's recommendations.

Status: Complete

Environmental assessment is complete. Detailed Design is expected to begin in 2027 and construction in 2029.

Visit the Highbury and Hamilton Road Intersection Environmental Assessment project page

The Kensington Bridge is a 100-year-old structure that that crosses over the North Branch of the Thames River. The bridge carries two lanes of east bound traffic on Riverside Drive and includes cantilevered sidewalks that are supported on the exterior of both trusses. Given the age of the structure, and repair needs, the City of London, in partnership with its consultant, AECOM, has initiated a Municipal Class Environmental Assessment Study to identify, evaluate and determine the best long-term rehabilitation or replacement alternative solution and design concept for the Kensington Bridge.

Status: Complete

The project is currently into detailed design and construction on the bridge is expected by 2028.

Visit the Kensington Bridge Get Involved page

This study builds on the City’s 2030 Transportation Master Plan and Cycling Master Plan to develop and review options to widen Oxford Street West from two to four lanes, improve intersection operations including consideration of roundabouts, and improve pedestrian and cycling facilities through the corridor. The potential need to widen the Thames River Bridge will also be reviewed.

Status: Complete

Environmental assessment is complete. Phase 1 (Westdel Bourne to Commissioners) - Detailed Design is ongoing, to begin Spring 2027. Phase 2 (Commissioners to Sanatorium) - Detailed Design to begin in 2029. Construction of Phase 1 is expected to begin Spring/Summer 2027 and will last for two years. Construction of Phase 2 to begin in 2031.

Visit the Oxford Street West Get Involved page

Visit the Oxford Street West Project page

The intersection of Oxford Street West and Gideon Drive has seen an increase in traffic volume in recent years, because of development growth, including the recent extension of Kains Road. With further growth anticipated in the area, the intersection no longer has the capacity to accommodate current and future traffic demand. 

This environmental assessment will look at solutions to improve the safety of the intersection, while also considering future growth and demand.

Status: Complete

Environmental assessment and Detailed design are complete. Construction has completed in 2026.

gET INVOLVED

The Southdale Road West and Bostwick Road Environmental Assessment looked at road improvements for Southdale Road West between Pine Valley Boulevard and Colonel Talbot Road. This study also looked at road enhancements to Bostwick Road from Southdale Road West to Pack Road to support future development in that region.

Status: Complete

Environmental assessment is complete. Detailed Design and construction of Southdale Rd from Pine Valley to Bostwick is complete. Detailed Design of Southdale Rd from Colonel Talbot to Bostwick began Summer 2025 set to be completed 2026. Southdale from Colonel Talbot to Bostwick to begin construction in 2027 (subject to approvals).

Visit the Southdale Road West and Bostwick Road environmental assessment project page

The Southdale Road West and Wickerson Road Environmental Assessment explored a variety of planning solutions to address the challenges on Southdale Road West between Boler and Wickerson Roads.

Status: Complete

Environmental assessment is complete. Detailed Design is anticipated to be completed in Fall 2026 and construction is expected to begin in 2027.

Visit the Southdale Road West and Wickerson Road Environmental Assessment Project Page

The Sunningdale Road Environmental Assessment was initiated to explore solutions to address challenges along Sunningdale Road, between Wonderland Road North and Adelaide Street North, including safety, traffic congestion, comfort and convenience, speed and travel time.

Status: Complete

Environmental assessment is complete. Detailed Design of Phase 1 (Sunningdale/Wonderland Roundabout), Phase 2 (Sunningdale/Richmond Intersection), and Phase 3 (Sunningdale from Wonderland to Villagewalk are completed. Detailed Design of Phase 4 (Sunningdale from Richmond to Blackwater) to start 2026. Construction of Phase 1 is complete. Construction of Phase 2 started in 2025. Construction of Phase 3 set to begin construction in 2026.

Visit the Sunningdale Road Environmental Assessment Project Page

Visit the Sunningdale Road Get Involved page

The Western Road and Sarnia Road / Philip Aziz Avenue Environmental Assessment was initiated to explore solutions to the challenges in this area, including looking at:

• pedestrian passage across the Western Road / Sarnia Road intersection
• curbs on Western Road to improve safety for pedestrians on the sidewalk
• safe pedestrian passage along Philip Aziz Avenue
• cycling facilities on Western Road and Philip Aziz Avenue
• northbound and eastbound intersection turning movement improvements at the Western Road / Sarnia Road intersection
• the stormwater drainage system on Western Road, including the outlet connecting to the Thames River via Philip Aziz Avenue.

Status: Complete

Environmental assessment is complete. Detailed Design of Western Rd and Philip Aziz Ave completed in 2025. Detailed Design of Sarnia Rd to be completed in 2026. Construction of Western Rd and Philip Aziz Ave. has begun in 2026 and is expected to be complete in 2027.

GET INVOLVED

The City of London has completed a Class Environmental Assessment (Class EA) study for Wharncliffe Road South between Commissioners Road and Becher Street.  

Status: Complete

Environmental assessment is complete. Detailed Design of Wharncliffe Rd S. Improvements Project from north of the Thames River to Springbank Drive is underway. 

Construction timing will be determined based on future budget approvals.

Wharncliffe Road South Improvements

The City is looking for solutions to improve Windermere Road from Western Road to Doon Drive by identifying the needs and balancing the requirements of the full range of potential users within the community including users of all ages and abilities, pedestrians, cyclists, transit vehicles and motorists.

Status: Complete

Environmental assessment is complete. Detailed Design is anticipated to begin in 2031 and construction in 2033.

Get Involved

The Wonderland Road Environmental Assessment was initiated to consider in greater detail:

• whether Wonderland Road should be widened to six lanes between Southdale and Sarnia Roads
• appropriate ways to accommodate pedestrian, cyclist, transit and other users.

Status: On-hold

Environmental assessment is complete. Detailed Design is anticipated to begin in 2031 and construction in 2033.

Visit the Wonderland Road environmental assessment project page

The City of London is supplied with water from both the Lake Huron Regional Water Supply System and the Elgin Area Water Supply System (Lake Erie).

To address future water storage needs, the City is undertaking a Municipal Class Environmental Assessment (EA) study to determine a preferred site (or sites) for additional water storage to meet future growth and ongoing emergency supply and distribution needs. 

Status: Complete

Environmental assessment and Detailed Design are complete. Construction is underway and expected to be completed in 2027.

Visit the Long term water storage study project page

The City of London is undertaking a Class Environmental Assessment to address climate change resiliency improvements for the Adelaide Wastewater Treatment Plant.

Status: Complete

Environmental assessment and Detailed Design are complete. Construction is underway and expected to be completed in 2027.

VISIT the adelaide wastewater treatment plant climate change resiliency page

VISIT the adelaide wastewater treatment plant climate change get involved page

The City of London is planning for future growth and development expected on the east end of the City, within the Vauxhall and Pottersburg wastewater treatment plant sewer sheds. 

Status: Complete

Planning for a new Pottersburg WWTP is not anticipated to begin until approximately 2030. In order to prepare for its construction, the Vauxhall WWTP is being upgraded for the purposes of being re-rated for increased capacity. Various capital projects to repair and upgrade the Vauxhall WWTP are either completed or under construction. It is expected that a formal re-rating of Vauxhall can be pursued in 2027. Timelines to construct and commission the next Pottersburg Plant are still planned for approximately 2040.

Visit the East London sanitary servicing study project page

The City of London is undertaking a Class Environmental Assessment to address climate change resiliency improvements for the Greenway Wastewater Treatment Plant. 

Status: Complete

Environmental assessment and Detailed Design are complete. Construction is underway and expected to be completed in 2027.

VISIT the greenway wastewater treatment plant climate change resiliency page

VISIT the greenway wastewater treatment plant climate change resiliency get involved page