Project Overview

  • We are improving Edinburgh's waste water systems with a multi-million pound investment.  The project will improve the environment around the Water of Leith. Our alliance partners amey Black and Veatch (aBV) will be carrying out the work.
  • Once complete, this new infrastructure will help prevent items which are wrongly flushed down the toilet - from overflowing into the Water of Leith
  • The project requires upgrade work to various Combined Sewer Overflows (CSOs) at 14 locations along or near the Water of Leith. 
  • We will be updating these project pages as the project progresses. 

What we are doing

The work includes the installation of new pipework, chambers and screens to reduce the risk of sewage related debris entering the Water of Leith and removing the Unsatisfactory Intermittent Discharges (UIDs) thus improving the aesthetics and reducing the environmental impact of storm overflows on the Water of Leith. This will result in an improved watercourse for all its users. 

Work started in July 2020 and overall the combined projects are expected to take around 2 years to complete.

Water of Leith

Water of Leith

Over the next 2 years we are investing to help improve the environment around the Water of Leith

Current and Up-coming Projects:

Click on individual links for more information about the projects. Please note that all dates/timescales are approximate and are subject to change. Covid restrictions and bad weather have caused delays to some projects.

Balerno Bridge CSO
When: 
Main Construction starts 10th May. Expected duration: approx. 9 months
What: New CSO chambers with static screen and associated pipework. New outfall and headwall

Kingsknowe CSO
When: Work Started - 12th October 2020. Expected Completion: June 2021
What: New CSO chamber with powered screen and associated pipework. New outfall and headwall. New access road needed from the Water of Leith Walkway

Old Mill CSO
When: Work started - 3rd August2020. Expected completion: June 2021
What: New CSO chamber.  New CSO chamber with static screen. New pipework and outfall with headwall. There will be diversions along the pathway for walkers & cyclists

Currie Bowling Club
When: 
Work started January 2021. Expected duration: 52 weeks
What: New CSO chamber with powered screen and associated pipework. New outfall and headwall

Gyle Park, Corstorphine

When: Works due to start in mid-April for around 32 weeks - TBC

What: New CSO chamber with powered screen and associated pipework and outfall to connect into existing culvert