No Ammonia in Water & Flushing of Water Distribution System

News posted Feb. 26, 2019 - 6:00 am

The City of Raleigh Public Utilities Department will temporarily stop adding ammonia to the drinking water and switch to chlorine-only disinfection on Tuesday, February 26 at 10 a.m. The City of Raleigh Public Utilities Department will resume adding ammonia to the water treatment process on Tuesday, April 9 at 10 a.m.

In order to promote optimal disinfection throughout the water distribution system, North Carolina Department of Environmental Quality requested the City of Raleigh Public Utilities Department and all other public water systems using chloramine disinfection (combination of chlorine and ammonia) to switch to chlorine-only disinfection for a minimum of three consecutive weeks at least every other year. This switch to chlorine-only disinfection can produce a temporary “chlorine taste and odor” in some cases.

The City of Raleigh Public Utilities Department also conducts flushing of the water distribution system during this period to hasten the change of chloramines to chlorine residual disinfectant. This flushing may cause some temporary discoloration in the water. The water is absolutely safe. However, as a precaution, customers may want to check to see if their water is discolored before laundering white clothes.

For questions regarding this process change, please contact Edward Buchan at 919-996-3471.

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