Research and analysis

Impact assessment opinion: sewers and drains

Red-rated evaluation of Defra impact assessment mandatory adoption and minimum standards for gravity foul sewers and lateral drains.

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This impact assessment (IA) received a red rating, meaning ‘not fit for purpose’.

The Regulatory Policy Committee (RPC) gives independent advice to government on the quality of analysis supporting new regulations.

Following scrutiny of an IA carried out prior to a regulatory proposal, the RPC provides an ‘opinion’ on the quality of analysis and evidence presented in the IA. This opinion then informs the decisions of ministers as to whether they proceed or not with the proposal.

In a small number of instances departments have chosen to proceed with an IA which has received a red rating from the RPC.