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  • Discharge of grey water or of liquid from a composting toilet

Discharge of grey water or of liquid from a composting toilet

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This activity applies to the discharge of grey water or of liquid from a composting toilet from:

  1. less than or equal to 10 domestic properties; or
  2. non-domestic properties with a total population equivalent of less than or equal to 50; or
  3. a combination of domestic and non-domestic properties with a total population equivalent of less than or equal to 50;

to full soakaway.

Authorisation level

Registration

Fees and charges

An application fee applies to the application of a new authorisation for this activity.

The application fee is £198.55.

For detailed information on application, annual activity fees, and fees related to transferring, varying, or surrendering an authorisation, please refer to our charging information.

Standard conditions

The set of Standard Conditions for this activity has the following reference EASR-SC-037.

Your registration application will only be granted if you can confirm you are able to comply with the standard conditions set out below.

If you carry on an activity under a registration authorisation you must comply with the standard conditions. It is an offence if you do not comply with the conditions.

SEPA will not authorise this activity if it poses an unacceptable risk to the environment.

  1. Any composting toilet system must have a means of separating liquid from the solid fraction.

  2. Any grey water must be filtered prior to discharge.

  3. The discharge must not;

    1. be directly into groundwater; or
    2. have a significant impact on any supply of water for human consumption that was in existence on the date of application for this authorisation.

  4. The discharge must not have a significant impact on the water environment as a result of:

    1. iridescence or sheen;
    2. discolouration;
    3. deposition of solids;
    4. increased foaming; or
    5. microbiological growth

Population equivalent

The maximum daily organic biodegradable sewage load. A population equivalent of one has a biochemical oxygen demand (BOD) of 60 grams of oxygen per day, which is equivalent to one person in a domestic property. 

Water for human consumption

Water that may be ingested by humans, used in the preparation of food or drink, or used in the cleaning of materials involved in the storage or consumption of food or drink.

How to apply

New applications

You can’t apply online for a registration for these discharges.

The application form you need to complete as part of your application is:

Submit your completed form by email to our Registry team

Surrender an existing registration

To apply to surrender an existing registration that authorises this activity complete:

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