FY 2012 Popular Annual Financial Report FY 2012 Popular Annual Financial Report | Page 14

Capital Investment Protect From Flooding and Erosion Energy Efficiencies Environmental Stewardship Focus On Mobility Infrastructure 14 Focus on Priorities Water Department Innovation Reaches New Heights Constructed in 1981, the Harwell Elevated Storage Tank (EST) in North Arlington was 11 feet lower in elevation than optimally needed to provide proper pressure and efficiency, which caused less than half of the two-million-gallon volume to be used efficiently. As part of the City’s routine maintenance and to maintain water quality in the distribution system, the Harwell EST had to undergo infrastructure improvements to optimize system operations. Raising the tank was one of three options the City researched to make the proper improvements. The other two were building a pump station and using an electrical energy source to manually control the filling and draining cycle of the tank, or starting from scratch by building an entirely new tank. Raising the tank was the best and most cost-effective solution for this elevated storage tank. Lifting the Harwell EST by 11 feet met the elevation requirements to provide improved water system operations and restore full functionality of the tank. Additionally, the tank was rehabilitated internally and externally. What originally seemed like an impossible idea turned out to be the best solution. Anytime Water Utilities can find a lower cost option, it results in cost-savings for rate payers. And, that allows the City to put money into other projects, like water line renewals. Thinking outside the box – or, in this case, outside the tank – paid off. Recycling of Water is Proving Beneficial for Arlington Arlington is known for the high quality of its drinking water. During times of drought, drinking water supplies are stressed. That’s why Arlington purchases reclaimed water, which is actually highly treated wastewater, from the City of Fort Worth’s Village Creek Reclamation plant to use for everything from dust control and irrigation at the 750-acre Arlington Landfill to keeping the Chester Ditto Golf Course green and lush. The 50-acre J.W. Dunlop Sports Complex is also being served with a six-inch reclaimed water line including a booster pump to meet irrigation pressure requirements. Reclaimed water costs less than drinking water and, when used for irrigation, reduces fertilizer use because some nutrients like nitrogen and phosphorus remain. Arlington’s Reclaimed Water System is a two-phase process, the second of which will evaluate delivering reclaimed water throughout the Entertainment District to places like Cowboys Stadium, the Rangers Ballpark in Arlington, Johnson Creek Park system, Lincoln