League City is reporting temporary discoloration in parts of its drinking-water system following heavy rainfall. In a September 15 notice, the city said treated water continues to meet federal and Texas drinking-water standards.
The city attributed the change to rainfall associated with Tropical Storm Edouard across the Trinity River Basin, affecting source water sent to Houston’s Southeast Water Purification Plant. That plant supplies a significant share of League City’s drinking water. Some customers may notice yellow or brown water or a slight odor change, according to the city’s announcement.
What the notice establishes
Officials said treatment remains effective and monitoring will continue. The notice does not identify affected neighborhoods or give a date for the discoloration to end. It also does not issue a boil-water instruction. Those are the limits of the information in the September 15 notice.
Why color and testing are different questions
The Environmental Protection Agency distinguishes between health-based drinking-water requirements and secondary guidelines addressing issues such as color, taste and odor. Water can have an objectionable appearance while meeting health standards, the agency explains.
That distinction does not mean every change in water should be dismissed. EPA advises customers with concerns to contact their water supplier and ask about monitoring results. Its guidance also cautions that an absence of odor does not, by itself, establish that water is safe. The relevant evidence is testing and the supplier’s specific instructions. EPA guidance on color, taste and odor.
How to report a concern
League City’s announcement for its 2026 drinking-water quality report lists 281-554-1041 as the contact number for Tommy Arredondo, the city’s Public Works utility manager, for questions about the report or problems involving taste, odor or water quality. City water-quality contact information.
When making a report, have your service address ready and describe when the change began, what the water looks or smells like, and whether the issue occurs at multiple faucets. Those details give utility staff a clearer account of the problem you are asking them to investigate.
First check the supplier named on your water bill. EPA recommends using that information to identify the correct utility; renters who do not receive a bill can ask their landlord or building manager. Follow any subsequent notice issued by that supplier. EPA advice for water customers.
For background, the city says its annual water-quality report covers drinking-water sources and the contaminants it tests for. That resource serves a different purpose from an incident update: residents looking for changes to this situation should return to the dated city announcement and any follow-up notices. City report information.