Free Chlorine Conversion 2021

There will be a temporary change in the way we treat your water.

The city will temporarily convert the disinfectant used in the water treatment process from chloramine to free chlorine. The duration of the free chlorine conversion will be approximately 30 days. The conversion will begin on April 5, 2021, and the city will return to chloramine disinfection on May 5, 2021. 

This change only applies to the main city water system that receives treated surface water. It will not affect customers in Riverpark, Greatwood, or New Territory, as those water systems are independent and already on free chlorine at all times.

What to expect during the temporary change

Generally, there are no noticeable changes in water quality as a result of this temporary conversion. However, some individuals may notice taste and odor changes and a slight discoloration to the water, primarily during the transition period. Noticeable water quality changes associated with conversions are normally short-lived and are not public health risks.

Is the water safe during this change?

The water will be safe for people and animals to drink, for cooking and bathing, watering the garden, and for all other common uses.  

However, people and businesses that normally take special precautions to remove chloramines from tap water, such as dialysis centers, medical facilities, and aquatic pet owners, should confirm whether pretreatment adjustments are necessary during the temporary switch from chloramines to free chlorine. 

At the conclusion of the conversion period, which will occur on May 5, the city of Sugar Land will convert its disinfection process back to chloramines.

Why is this necessary?

Sugar Land’s main water system currently uses chloramines (a combination of free chlorine and ammonia) to disinfect its drinking water supply prior to customer distribution. This is a reliable disinfection process that has been recommended by the Texas Commission on Environmental Quality (TCEQ) for systems treating surface water such as the city’s main water system. 

It is standard industry practice to periodically convert chloramines back to free chlorine to improve and maintain the highest water quality standards. In addition, the Environmental Protection Agency (EPA) and the TCEQ support this process as a necessary and effective measure for maintaining water quality.  

The city will implement directional flushing, combined with routine water quality monitoring to maintain the highest water quality for customers during the conversion.


Additional educational resources

What to Expect

Danica Mueller, Facility Operations Manager for the city's Groundwater and Wastewater Systems, explains more about the temporary conversion and what to expect during and after.

Hear from the H2O Pros

Public Works Director Brian Butscher and Surface Water Plant Manager John Bailey explain the city's temporary conversion of the disinfectant used in the water treatment process from chloramine to free chlorine.