Construction on the interior walls of the one million gallon groundwater storage reservoir being built to the east of the existing reservoir is moving along. The interior tank is plainly visible above the walls of the exterior tank. According to the design, the reservoir will be divided into two parts that will each hold 500,000 gallons. The design of the reservoir is circular to maximize water flow, and the second chamber would also be a circular chamber located inside the main chamber. The benefit would be that one chamber could be taken out of service for cleaning or maintenance without disrupting the system. Work on the reservoir is expected to be done in September.