Water Info

HCMUD 374 does not own water plants. If you have a water leak, please call our water operator:


2002 West Grand Parkway North, Suite 100
Katy, Texas 77449

Customer Service: (281) 579-4500
Emergency Service (24/7): (281) 398-8211

Rate Structure

Residential Water and Wastewater Service Rates

Your water is billed based on use for approximately 30 days. Each month the meter is read around the fifth of the month. You may pre pay for water and the money is credited to your account. Failure to pay a water bill.

Your water bill is composed of three costs. Water, WHCRWA – West Harris County Regional Water Authority for water and a Sewer fee it based on your water usage.

Water Treatment and Residential Delivery Fee
  • Base Fee – $10.00; for the first 5,000 gallons of usage. For water usage over 5,000 gallons the cost is $10 plus.
  • $1.50 per 1,000 gallons for usage between 5,001-10,000 gallons.
  • $1.75 per 1,000 gallons for usage between 10,001-20,000 gallons.
  • $2.25 per 1,000 gallons for usage between 20,001-50,000 gallons.
  • $3.00 per 1,000 gallons for usage between 50,001-75,000 gallons.
  • $3.60 per 1,000 gallons for everything over 75,000 gallons of usage.
West Harris County Regional Water Authority (WHCRWA or RWA)

$3.95 per every 1,000 gallons of groundwater usage and $4.35 per 1,000 gallons of surface water usage. This fee is set by WHCRWA and may change.  In order to comply with the requirements of the Harris-Galveston Subsidence District, the WHCRWA seeks to reduce groundwater withdrawals and transition to using more surface water as a method of minimizing subsidence and helping the aquifers recharge.  WHCRWA supplies treated surface water obtained from the City of Houston to certain MUDs.  MUDs receiving surface water from the WHCRWA pay the surface water fee.  Well owners within the WHCRWA’s boundaries that pump groundwater from permitted wells (including MUDs) pay the groundwater fee.  For more information about the WHCRWA, please visit www.whcrwa.com.

Sewer or Wastewater Service
  • Base Fee – $10.00; this includes the first 5,000 gallons of usage.
  • $2.00 per 1,000 gallons for everything over 5,000 gallons of usage.

Pay Water Bill

By Phone

(281) 579-4500

You will have three options:

  • Option 1:  Automatic Payment System
    • must have 15-digit account number and service address available
    • option to pay by: credit card, plus 3% of transaction convenience fee or checking/savings account, plus $1.00 fee per transaction
  • Option 2:  Dispatch Department for water outage and disconnections
  • Option 3:  Customer Service Representative
By Mail

Harris County MUD 374
P.O. Box 4728
Houston, Texas 77210



You will need:
  • 15-Digit account number
  • Exact name listed on the account (hyphen, period, etc. will have to be included)
  • Personalized username and password
  • Email address, that will receive notifications
Below is a list of features that are available through the web portal:
  • View monthly bill
  • Online payment using credit card and checking/savings account
  • Set up or cancel monthly reoccurring payments using credit card and check/savings account
  • Sign up for paperless bill
  • Set up email notifications: Payment Due, Payment is Past Due, and Bill Notification