The floc particles are removed in these filters. The filters are sized for a flow of 25 million gallons of water each day. The rate of filtration is adjusted to meet water consumption needs. Disinfection Chlorine is added to the water at the flash mix for pre-disinfection. The chlorine kills or inactivates harmful microorganisms.
Chlorine is added again after filtration for post-disinfection.
The water is held in the 48-inch transmission main for a specified time to allow the chlorine to disinfect the water. The pH of the water is adjusted with sodium carbonate, commonly called soda ash. Soda ash is fed into the water after filtration. PAC is added to the flash mix. Water Quality Water testing is conducted throughout the treatment process.