Every six to seven years, city employees replace the water filters at the
Water Treatment Plant. This time, they are using a new type of filter designed to remove impurities.
"About every six or seven years we rebuild them. This year, we're going in with a new media. It's gonna to be 18 inches of sand and 30 inches of anthracite and it's a new media we're gonna be evaluating," stated Water Quality Supervisor, Tymn Combest.
If the sand and anthracite mixture successfully reduces the turbidity, or cloudiness, than the city workers will consider installing the same type of filter in all their units.
"It'll probably take us about six months to evaluate this filter media and then, if it looks good, we'll start looking at replacing the other ones," Combest explained.
The main difference between the new filter and the old filter is the different type of media. The new media is a finer media ... which is supposed to decrease turbidity.
"The first thing we do is remove all the old media on this filter. We actually replaced the underdrain that makes sure the sand stays in the bottom," Combest said. "So, it's a brand-new underdrain. Then we add 18 inches of sand and then we add about 30 inches of anthracite."
The new filter will not change the taste of the city's water supply; but, could save money.
"It's possible we can reduce the chemical costs based on the better turbidity readings," finished Combest.
City officials said the filter is supposed to be completely installed and running Friday.