Welcome to Harris County MUD No. 504 / Harris County MUD 504

Check out new development in the District.

Latest News

Harris County MUD No. 504: Temporary Water Disinfectant Conversion

Oct 23, 2026

Harris County Municipal Utility District No. 504 began a temporary conversion in the disinfectant used in its water distribution system, from chloramine to free chlorine, on October 15, 2026.

Close-up of an e-bike safety certification label showing compliance with ANSI/CAN/UL 2849, CPSC 1512, and ISO 4210 standards for electrical, frame, and bicycle safety.

Humble ISD Ride Smart: What Groves Families Need to Know About E-Bikes and E-Scooters

Sep 23, 2026

Permit rules for the 2026–2027 school year, plus a short refresher on Texas law

Back-to-School Safety: Let's Help Everyone Arrive Safely

Aug 10, 2026

Whether you're driving, walking, biking, or dropping off a student, a few simple precautions can help keep everyone safe.

Low Water Pressure

Jul 30, 2026

HCMUD 504 has responded to a low water pressure incident in the District. The issue has been resolved and pressure is returning to normal levels. No need to boil water.

Understanding E-Bikes and E-Scooters in Texas

Jul 8, 2026

A Guide to Texas Laws, Safety, and Responsible Riding

Community meeting in a bright room; attendees sit in rows facing a panel at tables, with a presentation screen and two large board displays on the wall behind the speakers.

Town Hall 2026 Recap

Jun 23, 2026

Looking Back and Planning Ahead: Highlights from the 2026 HCMUD 504 Town Hall

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Welcome to Harris County MUD No. 504

Harris County Municipal Utility District No. 504 (the "District") is a MUD created in 2009 by order of the Texas Commission on Environmental Quality. The District contains 981.67 acres of land and is located within Harris County, Texas.

The District was created for the purpose of constructing and operating water, sewer, and drainage services to its residents.

See what's new in the District Items that may cause water quality issues in your home Experiencing low water pressure