The Vallejo Sanitation and Flood Control District is an independent special district created by the State of California to collect and treat wastewater and protect the Vallejo community from flooding. Since 1952, the district has protected public health and the San Francisco Bay Area by treating wastewater generated by the more than 115,000 residents of Vallejo and surrounding area.

Evoqua Water Technologies LLC was contacted by a South Florida Municipality to provide an odor control solution for a lift station within their collection system. In the past, the municipality had implemented biofiltration for control of atmospheric hydrogen sulfide. However, in recent years the biofilter was removed, leaving the lift station untreated and exposed to high sulfide concentrations.