Off-Mains Drainage specialists offering a range of services based on 35 years’ experience in consultancy, product design, manufacture, installation & maintenance of all things Off-Mains including septic tank and sewage treatment plant installation. Drainage compliance surveys in accordance with current Environment Agency General Binding Rules and Building Regulations offer peace of mind to home-owners who are buying or selling their listed building. Advice given on possibility of insurance claim from existing damage. Working across the South-East.