Regulation 21 Sampling and analysis by persons other than local authorities
Subject to paragraph (2), a local authority may enter into arrangements with–
a relevant person for the taking and analysis of samples in accordance with these Regulations on behalf of, but at no expense to, the authority; or
any other person for the analysis of samples in accordance with these Regulations on behalf of the authority (whether or not involving the authority in expense).
A local authority shall only enter into arrangements under paragraph (1) if it is satisfied that the tasks will be carried out by, or under the supervision of, a person competent to perform them and otherwise in accordance with these Regulations.
Arrangements under paragraph (1)(a) shall include a requirement for the results of any analysis to be sent to the local authority as soon as they are available.