FOCUS ON RAINW A TER A TTENUA TION Rainwater attenuation is required when a storm event could discharge water into the sewer system at flow rates higher than limits set by the local water authority. Storm water is diverted to balance ponds, holding tanks or attenuation crates. Pumping stations are then employed to discharge the water into the sewer at a controlled rate. Our expert team can specify pumping stations to suit any site

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