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United Utilities is set to invest £525m in Salford's wastewater network over the next five years, marking the largest overhaul in the city's history. The program includes a £225m upgrade to Salford wastewater treatment works, which will enhance ammonia and phosphorus removal before discharge into the Manchester Ship Canal.

This upgrade requires the demolition of five existing trickling filters. The Eccles wastewater treatment works will receive a £302m investment, including a 60,000m3 underground storage tank and new pumping infrastructure to alleviate pressure during heavy rainfall.

Environmental Impact Assessment requests have been submitted for both upgrades. This initiative is part of United Utilities' £13bn Big North West Upgrade plan.