Public Notice: Maximum Contaminant Level Violation MCL, LRAA/TTHM

The Texas Commission on Environmental Quality (TCEQ) has notified the BAYBROOK MUD 1 water system that the drinking water being supplied to customers had exceeded the Maximum Contaminant Level (MCL) for total trihalomethanes. The U.S. Environmental Protection Agency (U.S. EPA) has established the MCL for total trihalomethanes at 0.080 milligrams per liter (mg/L) based on locational running annual average (LRAA), and has determined that it is a health concern at levels above the MCL. Analysis of drinking water in your community total trihalomethanes  indicates a compliance value in quarter four of 2014 of 0.122 mg/L for DBP2-01; and in quarter one of 2015 of 0.123 mg/L for DBP2-01.

Trihaomethanes are a group of volatile organic compounds that are formed when chlorine, added to the water during treatment process for disinfection, reacts with naturally occurring organic matter in the water.

Some people who drink water containing tihalomethanes in excess of the MCL over many years may experience problems with their liver, kidney, or central nervous systems, and may have an increased risk of getting cancer.

You do not need to use an alternative water supply. However, if you have health concerns, you may want to talk to your doctor to get more information about how this may affect you.

We are taking the following actions to address this issue:

Baybrook MUD #1 has made changes to their water line flushing program, specifically by increasing the number of times water lines are flushed each month. Baybrook MUD #1 receives surface water from the City of Houston and we are not able to regulate the water that we receive from COH. By flushing the water lines more to keep the water age low in the lines this will decrease the amount of trihalomethanes in the water lines.

Please share this information with all people who drink this water, especially those who may not have received this notice directly (i.e., people in apartments, nursing homes, schools, and businesses). You can do this by posting this notice in a public place or distributing copies by hand or mail.

If you have questions regarding this matter, you may contact Katie Hargrove at 281-350-0895. 

Posted on November 30, 2017