Plant Operator

MWH Treatment • Preston, England • Posted June 14, 2026

About the Role

MWH Treatment are looking for Plant operators for Oswestry on the United Utilities framework on a contract basis. 


You will report directly to the Lead Site Supervisor and your role will carry out site activities in the most efficient manner, to the specification and within the contract time without risk to the health and safety of all concerned and providing a quality product to the client..


Key responsibilities will include:

  • Responsibility for process monitoring of the new plant
  • Daily monitoring of the process operating parameters (MLSS, SSVI, final effluent analyses, sludge thickener performance, sludge, chemicals)
  • Daily monitoring of equipment (oxidation ditch (inducers, blowers, instruments, ferric, caustic, sludge thickeners, etc)
  • Monitoring of analysers, recalibration of instruments, ordering of reagents
  • Adjustment of process parameters to maintain performance
  • Reporting to Advance Plus process commission...