Learn the different steps of wastewater collection, treatment, and water reclamation.
Wastewater Collections is the conveyance of wastwater from a busines or residency to the wastewater treatment plant using underground pipes and lift stations. The CAWD collection system is comprised of approximately 81 miles of gravity sewers ranging in size from 6 inches to 27 inches in diameter together with nearly 4 miles of force mains, 7 pump stations, and over 1,500 manholes.
The CAWD Wastewater Treatment Plant (WWTP) has a permitted capacity of 3.0 million gallons per day (MGD) of dry weather flow. Current average dry weather flow (ADWF) is approximately 1.1 MGD which represents 37% of the permitted capacity. Of the 1.1 MGD, approximately two-thirds is from CAWD customers and the remaining one-thrid is from Pebble Beach Community Service District customers.
The original tertiary plant, constructed in 1994, consisted of an influent flow equalization basin, influent pumps, chemical contact chambers for the addition of coagulants and flocculants, a sand filter, chlorine contact channels and effluent pumps. With the addition of the microfiltration and reverse osmosis (MF/RO) facilities in 2008, the chemical contact chambers and sand filters were “…