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Environmental monitoring and assessment
Radioactive substances are used routinely in Scotland for medical diagnosis and treatment, research, energy generation and industrial processes. Under the Environmental Authorisations (Scotland) Regulations 2018 (EA(S)R), we regulate these activities including discharges to the environment. We are responsible for ensuring that public radiation doses as a result of authorised radioactive discharges
Activities exempt from waste management licensing
Information regarding activities that may be exempt from waste management licensing, and the statutory controls to prevent environmental pollution and harm to human health
Information regarding activities that may be exempt from waste management licensing, and the statutory controls to prevent environmental pollution and harm to human health
From the 1st November 2025, you will no longer be able to apply for the exemptions listed on this page. The information on this page remains to help existing exemption holders comply with their legal obligations, before transitioning to the new Environmental Authorisation (Scotland) Regulation (EASR) framework for authorisations. To find out what authorisation you will need when your exemption exp
Modelling
Marine aquaculture modelling
Computer modelling is used as a guide to determining licensed discharge quantities of anti-parasitic chemicals and organic waste arising from marine fish-farm operations.
The modelling tools promoted by SEPA provide robust predictions in most cases, requiring relatively little site-specific information. Nevertheless, the quality of the model outputs is dependent upon g
Technical guidance
Further technical guidance
This page brings together a number of ancillary guidance documents and previous email bulletin information relating to modelling of marine fish-farms for CAR licence applications.
Auxiliary biomass sampling transect
In areas where the tidal residual current is weak, the auxiliary transect (site-specific sampling 2) may be aligned along a bearing reciprocal to the primary
Improving urban waters
Our vision is for towns and cities to use nature-based, blue-green solutions to absorb and safely convey rainwater.
This will:
help strengthen their resilience to the intense downpours they face under climate change
minimise the risk of polluting sewage spills by keeping rainwater out of sewers
create fantastic places for people to live and work
Urban wastewaters
Over the past 20 years, SEPA has
The Water Environment Fund
Information regading the Water Environment Fund, including how to apply and the assessment process.
Information regading the Water Environment Fund, including how to apply and the assessment process.
Rivers are a vital part of our landscape and a great asset to Scotland. They provide wildlife corridors, opportunities for recreation and wellbeing and resources for farming, drinking water, beverage production and hydroelectricity.
Like many of our natural resources our rivers are under pressure and in places, damaged. This includes straightened and embanked channels which ar
Invasive non-native species
What are invasive non-native species?
Non-native species (NNS) are plants and animals which have been introduced (accidentally or deliberately) outside of their native range through human activity.
Many non-native species contribute positively to our lives, as livestock, crops, timber, garden plants or pets. However, a small proportion (10-15%) of non-native species spread rapidly and cause damage
Reservoirs
The majority of dams will require an authorisation from SEPA under "The Water Environment (Controlled Activities)(Scotland) Regulations 2011 (CAR). This authorisation number will start CAR/.../... If you don't have a CAR authorisation for your dam, then you should contact your local SEPA team to discuss this.
You can find more advice on impoundments and water resources authorisations on our Enviro
Sea lice regulatory framework implementation
Frequently asked questions
Why is a sea lice framework needed?
Populations of wild Atlantic salmon have been in serious decline in recent decades and are now at crisis point. The pattern of decline is repeated across the salmon’s North Atlantic range and is likely caused, at least in part, by the effect of climate change on the survival of salmon during their time at sea.
To build resilience of Sc
Help Information
Can I view the maps full screen?No. The maps can only be viewed within the set frame.
Why has the background on the maps changed (2019)?Due to changes to the contract associated with the supply of the background mapping to SEPA, we now have a different background on display. This change took place in December 2018. There are no significant changes to what is displayed, and the mapping presented ha