Notification of Disinfectant Change

HCMUD 4122026-10-12T15:22:06-05:00October 12th, 2026|

Harris County M.U.D. No. 412, (PWS) ID TX1013354 , will temporarily convert the disinfectant used in the distribution system from chloramine to free chlorine. The conversion will begin October 15, 2026, and continue through approximately November 16, 2026, During this period, you may experience taste and odor changes associated with this type of temporary disinfectant conversion. These taste and odor changes are to be expected, however the water will continue to meet or exceed all state and federal drinking water standards and is safe to drink.

Public water systems are required to properly disinfect their water and maintain an adequate disinfectant residual in the distribution system. Chloramine, free chlorine combined with ammonia, is widely used as a disinfectant because it persists for long periods while also limiting the formation of disinfection by-product contaminants. Prolonged use of chloramine coupled with other factors that can impact water quality, such as high temperatures or stagnation of water, may result in the growth and/or persistence of organic matter within the pipes of the distribution system, which may hinder the ability to maintain an adequate disinfectant residual. A temporary conversion to free chlorine, partnered with flushing activities, helps to rid distribution pipes of this organic matter, and improve the quality of your water overall.

Harris County MUD No. 412 has chosen to implement a temporary disinfectant conversion to free chlorine based on the following:

1. Routine Distribution Water Quality Maintenance

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 Si Environmental LLC at (832) 490-1600.

• Notification of Disinfectant Change (PDF)

Boil Water Rescinded – April 14, 2026

HCMUD 4122026-04-14T12:07:08-05:00April 14th, 2026|

On 4/12/2026 the Texas Commission on Environmental Quality required the Harris County MUD #412 public water system, TX1013354 to issue a Boil Water Notice to inform customers, individuals, or employees that due to conditions which occurred recently in the public water system, the water from this public water system was required to be boiled prior to use for drinking water or human consumption purposes.

The public water system has taken the necessary corrective actions to restore the quality of the water distributed by this public water system used for drinking water or human consumption purposes and has provided TCEQ with laboratory test results that indicate that the water no longer requires boiling prior to use as of 4/14/2026.

If you have questions regarding this matter, you may contact the Operations Company for your District at: (832) 490-1601 or by emailing customercare@sienviro.com.

Boil Water Rescinded – April 14, 2026 (PDF)