Water and Wastewater Pump Replacement Industry Standard Practice & Measure Package Update

The SWWP004-03 Measure Package currently applies to clean water pumps, but similar pump types are also used in wastewater applications. Wastewater pumps meeting secondary treatment standards or cleared of solids undergo the same Pump Energy Index (PEI) testing as clean water pumps, yet no measure package addresses their efficiency. A previous CalNEXT study identified this gap, recommending a deemed measure package for wastewater pumps. To address this, a market study was conducted to establish baseline PEI values for both clean water and wastewater pumps. Surveys targeting diverse stakeholders revealed limited awareness of PEI ratings, with pump reliability and cost being the primary purchase drivers. Sales data from the Northwest Energy Efficiency Alliance (NEEA) highlighted average PEIs ranking at the 76th percentile of the DOE database, suggesting incentive program influence. There was no indication of differing PEI ratings between clean water and wastewater pumps. Recommendations include updating baseline PEI values in the SWWP004 Measure Package using the 25th percentile of DOE data for each pump size and control strategy to encourage adoption of efficient pumps in both markets.