Tender: United Utilities Framework for Wastewater Network Asset, Flow and Water Quality Surveys – North West England

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United Utilities is seeking suppliers to re-procure a framework for flow and asset management surveys comprising two lots: Lot 1 for wastewater network asset surveys (manhole, pumping station, combined sewer overflow, impermeability and drainage connectivity surveys) and Lot 2 for flow and water quality surveys. Lot 2 work includes installing sewer depth and flow monitors, river depth monitors, river stage boards, rain gauges, portable wastewater samplers, dissolved oxygen/temperature monitors and monitoring equipment either continuously or for wet and dry weather events, with all telemetry raw data except rain gauges viewable live via a website and downloadable by the Procurer. Suppliers must collect and process data and produce reports in accordance with Call-Off Particulars; river surveys may include time of travel surveys and river flow gauging and continuous monitoring of dissolved oxygen (mg/l and % saturation), temperature, phosphorus, phosphate, pH, turbidity, chlorophyll, conductivity and ammonium, while surveys at wastewater treatment works will combine flow and quality monitoring. Surveys may target sewer, river or treatment works individually or in combination, and services are required across Cheshire, Merseyside, Manchester, Lancashire and Cumbria.