Plant Operator
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Salary
≈ $33k – $61k per year (Estimated)
Location
In office (Preston)
Visa
Licensed UK visa sponsor
Employment
Contractor
Confirmed on the employer's own hiring board on Oct 19, 2026. First seen by Alion on Aug 13, 2026. MWH Treatment scores A on the Alion truth index.
Overview
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Headquartered in Salford, United Kingdom, MWH Treatment is a leading integrated design and build contractor specializing in the water and wastewater sectors. Operating across major utility frameworks as part of RSK Group, the company delivers large-scale capital schemes, environmental infrastructure, and advanced process engineering solutions. By leveraging multidisciplinary technical expertise and modern digital delivery methods, it helps public and private water providers build resilient, energy-efficient facilities.
MWH Treatment arelooking 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 commissioning engineer
- Consultation with client, suppliers and Advance Plus process team
- Regular meetings with UU re progress, performance, etc
- Daily logs
- Ordering of chemicals as required (including ferric, caustic, poly, reagents, cuvettes for sampling analyses)
- Taking deliveries of chemicals
- Assisting Advance Plus team with shutdowns, access, etc
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