Sierra Vista Environmental Operations Park
The City of Sierra Vista Environmental Operations Park (EOP) is located at Sierra Vista’s wastewater treatment facility off Highway 90 between mileposts 324 and 325, and on the west side of the San Pedro River. The project recharges the city of Sierra Vista’s A-quality treated effluent and is raising groundwater levels in a critical area that is both supporting San Pedro River flows and protecting the river from municipal groundwater pumping centers. Through the EOP’s eleven recharge basins an average 2,000 acre-feet is recharged annually, plus another 700 acre-feet incidental recharge occurs in the EOP wetlands. The annual treated effluent recharge is between approximately 2,700 and 2,900 acre-feet. Project operation began in 2002, with groundwater monitoring beginning that same year, and is ongoing.