The Chatham Water System had experiencedRendering of new Powdered Activated Carbon Dosing Building at Chatham WTP an extensive water discolouration event in September of 2013. Due to this water colour event and other taste and odour events that have occurred on an annual basis, a water treatment process solution is required to reduce or eliminate these typical annual events.

The Chatham Water Treatment Plant (WTP) produces water for the communities of Chatham, Pain Court, Mitchell's Bay, Dresden, Kent Bridge, Thamesville and also rural areas surrounding these communities. The Chatham Water System services a population of approximately 47,815 people.

Dillon Consulting Limited, in partnership with CH2M HILL, was retained to provide the engineering services for the review, design and construction phases for the colour, taste and odour upgrades.

The Chatham-Kent Public Utilities Commission (CK PUC) approved to move forward with colour, taste and odour upgrades at the Chatham WTP in the fall of 2013 after the colour event occurred. In 2014, the first phase of the upgrade was completed. The first phase included the installation of a sodium permanganate dosing system. This phase helps to control the colour aspect of the water.

The second phase of the project involves the installation of a powdered activated carbon (PAC) dosing system. This phase will help control the taste and odour experienced seasonally during the year at the Chatham WTP.

The contract for Phase 2 was awarded to BGL Contractors Group (Waterloo, ON) for $941,890.00. Construction on this phase started in May 2015. The construction of the new building and equipment installation is anticipated to be completed by the summer of 2015.