Temporary Change in Disinfectant

In order to provide the most effective disinfection process, Assumption Parish Water Works will be making a temporary change in the type of disinfectant used in the water supply. While we typically use chloramines as our disinfectant, we will be changing to free chlorine in order to clean our distribution lines and provide a more consistent disinfection throughout our distribution system when we switch back to chloramines.

When is the switch to free chlorine scheduled?

The temporary switch to free chlorine will start October 9, 2017 and last at least 30 days. If a longer duration is necessary, then we will continue to use free chlorine until our goals have been satisfactorily met.

What are drinking water disinfectants?

Free chlorine and chloramines are common disinfectants used for killing potential pathogens (such as bacteria) in water systems and are added during the drinking water treatment process. Chloramines are created when ammonia is added to chlorinated water. Chloramines allow us to very effectively treat large, spread out systems such as ours, and is used most of the year, allowing us to keep disinfection by-products lower.

What is being done?

We are going to change the distribution system disinfectant from chloramines to free chlorine. Although the level of disinfection will stay the same, the type of disinfectant will change. We will continue to monitor chlorine levels throughout the parish, as we normally do.

What should you do?

You don’t need to do anything. This is not an emergency. If it had been, you would have been notified immediately.

What can you do if you notice a chlorine taste or smell?

During the switch, you may notice a chlorine taste and/or odor in our drinking water. Chlorine levels will continue to meet EPA standards and are not a health risk.

  • Run the cold water tap for several minutes when water is not used for several days.
  • Collect and refrigerate cold tap water in an open pitcher. Be sure to collect water after running the cold water tap for two minutes. Within a few hours, the chlorine taste and odor will disappear.
  • Water filters can reduce chlorine taste and smell. Be sure to use a filter certified to meet Nation Sanitation Foundation (NSF) standards and replace the filter cartridge as recommended by the manufacturer.

Who should take special precautions during the temporary switch to chlorine?

Customers who normally take special precautions to remove chloramines from tap water, such as dialysis centers, medical facilities, and aquatic pet owners, should continue to take the same precautions during the temporary switch to chlorine. Most methods for removing chloramines from tap water are effective in removing chlorine.

Please share this information with all other people who drink this water, especially those who may not have received this notice directly (for example, people in rentals whose rent covers water, nursing homes, schools, or businesses.) You can do this by posting this notice in a public place or distributing copies by hand or mail.

Water System Contact: Assumption Parish Water Works Dist. No. 1

M-F 8:15am-4:15pm