The Jackson board of aldermen on Monday approved an ordinance calling for a bond election Aug. 4 that would provide funding for an overhaul of the city’s water system if it is approved by voters. Jackson’s aging water system has been a topic of discussion for about a year, and city officials say a number of too-small cast-iron pipes and water mains give residents and public entities such as the Jackson Fire Department inadequate and unreliable pressures and volumes. City officials created a proposal that improves the water system, expands it and adds an eighth well in the northwest part of town and a fifth water tower on the east side near the old landfill. The upgrades include 21,355 feet of upgraded and new water mains and will cost $11.3 million. That means the average customer’s monthly bill would rise to $31.41. The last time the water system saw upgrades of a comparable measure was in 1997, with a water/sanitary sewer upgrade. If the voters approve the project, installations and renovations will begin in 2016 and likely be completed within 10 years. If voters reject the project, then the city will have to continue managing with the current system.