The South Central Connecticut Regional Water Authority faced a problem with off-gassing from sodium hypochlorite that rendered its feed pumps ineffective.Pumps would lose prime, run dry and fail to deliver disinfectant chemicals when needed most, especially during startups when no operators were on site. The authority addressed the challenge by switching to progressive cavity pumps, improving disinfection reliability while reducing maintenance costs and callouts.Seeking reliabilityThe authority serves some 430,000 residents in 15 counties, operating a network of unstaffed well fields. Inconsistent sodium hypochlorite dosing had posed a persistent challenge. At the seven well field sites, operators aim for a 1.1
