For further information and guidance regarding your application requirements, please find below, a list of useful links to regulatory bodies and building regulations across the UK.
Regulatory bodies and building regulations
Environment Agency England: https://www.gov.uk/government/organisations/environment-agency
Natural Resources Wales: https://naturalresources.wales/splash?orig=%2f&lang=cy
SEPA Scotland: https://www.sepa.org.uk/
Permits for Septic Tanks: https://www.gov.uk/permits-you-need-for-septic-tanks