Quality assurance

Last reviewed:

Our biosolids are produced in accordance with the Safe Sludge Matrix (an agreement between water companies and the British Retail Consortium), Biosolids Nutrient Management Matrix and the Biosolids Assurance Scheme.

We comply with the Sludge Use in Agriculture Regulations 1989 and operate under ISO status including ISO 9001, ISO 14001 and ISO 18001.

Along with the rest of the Water Industry, Thames Water is striving to achieve Biosolids Assurance Scheme (BAS) accreditation.

This combines the legislative and non-legislative requirements along with best practice, by achieving operational consistency and demonstrating transparency in the delivery of nutrients to agriculture.

BAS will aid the promotion of public acceptance, protection of the environment and the endorsement of sustainability, thus providing assurance to food chain stakeholders.