Further information is available on the following sites:

ODPM - Building Regulations - Approved Document H
www.odpm.gov.uk

NetRegs - Guide to Environmental Legislation
www.netregs.gov.uk

Environment Agency - Contact numbers
www.environment-agency.gov.uk

Environment Agency - Pollution Prevention Guidelines - Disposal of sewage where no mains drainage is available: PPG4
www.ehsni.gov.uk