Water quality and sewage discharge

Request sewage discharge data for a named waterway.

Combined sewer overflows discharge untreated sewage into rivers and coastal waters during heavy rainfall. The frequency and duration of these discharges affects water quality and public health, particularly near bathing waters and shellfish areas.

Dear [AUTHORITY NAME], Please provide the following information for [WATERWAY OR AREA NAME] in [YEAR e.g. 2024]. 1. The number of combined sewer overflow discharges. 2. The total duration of discharges in hours. 3. The locations of each discharge point. 4. Any water quality monitoring results for the affected stretch. I would prefer to receive this by email. Yours faithfully, [YOUR NAME]
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Who to send it to#

Scottish Water for discharge data, or SEPA for water quality monitoring and licence conditions. Use the Scottish Information Commissioner’s directory to find the right contact. You can also send your request through WhatDoTheyKnow, which publishes responses online.

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Tips#

  • This is environmental information under the EIR. You do not need to give a reason for your request.
  • Scottish Water has been installing monitors on combined sewer overflows. Ask specifically about monitored overflows in your area.
  • SEPA publishes some water quality data on its website. Check what is already available before submitting your request.