Natural Resource Wales - Sewerage - Discharge to Ground

If you live in the countryside you may have a sewerage treatment plant.

See below the Government's weblinks setting out the rules regarding installation and sewerage discharge to ground and surface water.

If you don't comply you will have issues on re-sale.

Read more here ...

https://naturalresources.wales/permits-and-permissions/water-discharges-and-septic-tanks/register-your-septic-tank-or-small-sewage-treatment-plant/?lang=e

See also discharge to surface water.

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England has different rules - see other articles.