December 11, 2025
Insurance providers urged to join national body to meet the subsidence challenge
Effective communication will be vital if the insurance claims industry is to respond decisively...
Illustrations
Our illustrations provide a visual explanation of off mains drainage methods, building subsidence, water service pipe responsibility and drainage pipe responsibility.
Building Subsidence
Subsidence is the vertical downward movement of a building foundation caused by loss of support of the site beneath the foundations.
It’s a serious problem and has many causes including leaking drains and sewers.
Off Mains Drainage
There are three commonly-used options for when wastewater cannot enter a mains sewage system.
Click here to find out more about cesspits, septic tanks and sewage treatment plants.
Water Pipe Responsibility
When pipes need repairing or replacing, it’s important to know who is responsible for them.
Click here to see illustrations where we explain who is responsible for each water service pipe depending on the type of property.
Drainage Responsibility
Similar to water pipes, it’s important to know who is responsible for which drainage pipes.
Click here to see illustrations explaining drainage responsibility and drainage misconnection risks.
Latest News From Catalyst
Helping business and domestic customers every day of the year
December 08, 2025
After the drought – subsidence and surface flooding risks could rise, warn Catalyst experts
The UK’s extremely dry summer could still create elevated risks for property owners well...
November 24, 2025
Catalyst’s Paul Duddle joins expert panel at ILC conference
The expertise and experience of the Catalyst Services UK team will inform a debate...