Aquaculture is the growing of finfish and shellfish. In Scotland, this primarily involves the farming of:

• salmon and sea trout held in sea pens;
• salmon and trout in freshwater pens and;
• shellfish (oysters and mussels) on rafts and lines in the sea.

As one of a number of organisations regulating finfish aquaculture, SEPA's job is to make sure environmental standards protect the marine environment for the people of Scotland and we make sure the industry meets those.

A high quality environment and abundant freshwater resources are vital to Scotland’s aquaculture sector. SEPA regulates discharges from finfish farms by issuing permits that limit the levels of pollutants that they discharge to the water environment. Where farms use fresh water SEPA is also responsible, through the issuing of permits, for controlling the amount of water that can be abstracted. SEPA does not regulate shellfish growing.  

Our powers to deliver these functions are defined under the Water Environment (Controlled Activities) (Scotland) Regulations 2011 (CAR).

Regulatory framework for marine pen fish farms

SEPA, as one of a number of organisations regulating finfish aquaculture, is implementing a revised regulatory framework that will strengthen the protection of the marine environment for the people of Scotland.

The new framework follows twenty-two months of work by colleagues across the agency, a 2017 consultation, and two Scottish Parliamentary committees, one of which concluded that “the status quo is not an option”, adding that the industry’s expansion goal “will be unsustainable and may cause irrecoverable damage to the environment” unless governance and practices are improved markedly.

In developing the new regulatory framework we have started with marine pen fish farms, which are the largest part of the sector.

Marine pen fish farming has grown and changed significantly since our existing regulatory framework was introduced:

• the average size of farms has increased
• there has been a shift away from very sheltered, non-dispersive locations, where farms were concentrated in the early stages of the sector’s development.
• our scientific understanding, including our ability to model the fate of discharges in the sea, has also substantially improved.

The way we regulate needs to reflect and respond to these changes. The new framework will strengthen and future-proof our ability to deliver world-leading protection of the marine environment.

Finfish aquaculture sector plan

SEPA is changing today, creating a world-class environment protection agency fit for the challenges of tomorrow. By moving away from the traditional site by site regulation to grounding our regulation and activities across whole sectors, we will shape our interactions with every sector and the businesses in them.

In November 2018 we hosted a seven week consultation supported by a series of nine public engagement events across Scotland, giving communities, NGOs, industry and public agencies an opportunity to engage with us and feed back on our regulatory approach.

The sector plan is ambitious in its aspirations for the industry but has two simple aims:

• we will ensure that every regulated business fully meets their compliance obligations; and
• as many regulated businesses as possible will go beyond the compliance standards

The consultation version is available to view. The sector plan will be published in due course.