Keeping the Water Flowing
You often see the Green Valley Water District personnel out on the streets doing maintenance on our infrastructure. Have you ever wondered what they do and why it needs to be done? Here are some of the answers provided by the District Manager, Larry A. Hoffman.
As a Domestic Water Improvement District, our responsiblity is to ensure a reliable and safe potable water infrastructure. To accomplish this requires not only upgrading our distribution system by maintaining it through a regularly scheduled maintenance program. On an annual basis, the Districts field staff goes through each HOA maintaining all parts of the infrastructure, such as valves, flush outs, and fire hydrants. The specific maintenance actions are described below.
Operations of Valves: This is done to assure that all the valves are working in accordance with the American Water Works Association standards (AWWA). There are 800 plus valves in the District. Each valve must be operated on an annual basis to assure proper functioning. The valves must be operated up and down to check for a complete shut down or stoppage of the water.
Operation of Fire Hydrants: There are 403 fire hydrants in the District. The maintenance of the fire hydrants is similar to operating the valves in that they must be turned on and off to assure proper functioning when needed. The Fire Department depends on the District for this service plus repair of damaged hydrants. You may have seen the District has been putting locks on the fire hydrants which is part of the District's water conservation program and to stop contractors and the other related businesses from stealing water from the fire hydrants.
Flushing the System: Operating the flush outs is just like it sounds, the purpose is to flush out the system to improve water quality and to clean out any sediment that might be in the water mains. Dead end water mains are particularly difficult as there is little water movement making the sediment buildup faster. The actual flush outs are located in the street or easement. There is a gate valve that controls the flow of water that comes out of each flush out. The fire hydrants must also be flushed to keep the volume of water at the level needed by the Fire District to put out fires. Residents are most distressed at the sight of large amounts of water running down the roads. But please be assured the amount of water used in the flushing is done to specific standards set by the AWWA.
Meter Replacement: For the past 10 years, the District has been removing and replacing the old meters with new meters. You may ask why? First, we have a meter replacement program that follows Best Management Practice (BMP) that is a requirement of the Arizona Department of Water Resources. (ADWR). Second and most important this is a water conservation program. This program started at the southern end of the District and moves northward as funds allow. Each year an amount is included in our Capital Budget for the program. In August replacements were started in Canoa Ridge and Desert Hills I Townhouses. This work was completed September 06, 2017.
It is now a federal offense to tamper with a public water system. US Code Title 42, 300i-1
DO NOT USE THE DISTRICT VALVE IN THE METER BOX, TO SHUT OFF YOUR WATER. HAVE YOUR OWN VALVE INSTALLED WITHIN 18” OF THE METER BOX ON THE HOMEOWNER’S PROPERTY OF THE METER PER ARIZONA CODE.
The District has spent a lot of time locating and uncovering all the valves and flush outs throughout the system. So, we would like to take this opportunity to encourage Homeowner Association to advise their paving contractor NOT to pave or coat over the District valve covers.