Lithium Trace Testing

United Utilities Water Limited awarded a contract worth £1.2 million to NSI Water and Wastewater Solutions Ltd on 20 July 2026 for lithium trace testing services. The work involves non-intrusive tank capacity and sediment assessments of anaerobic digesters using lithium chloride as a trace element to comply with Environmental Permitting Regulations, determining effective digester volume, mixing efficiency, hydraulic retention time, short-circuiting, and sediment accumulation over a 5-year compliance cycle. Testing includes methodology development, pre-test site visits, background sampling, lithium dosing, and delivery of findings in a comprehensive report.