April 08, 2026
Dom wins first Catalyst Kudos Award of 2026
Property Claims Handler Dom Weiss has been named the first winner in 2026 of...
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
March 03, 2026
Catalyst’s Paul Duddle ready to join national debate as Subsidence Forum chairman
Catalyst Services UK Operations Director Paul Duddle is looking forward to being a key...
February 12, 2026
Extreme weather is the new normal – this is what it means for drainage maintenance
Prolonged rainfall this winter is a sign of a pattern of weather we must...