Office Location

Military Highway Water Supply Corporation
4000 US Highway 281
Mercedes, Texas 78570

Military Highway WSC Offices

Military Highway WSC Offices

Frequently Asked Questions

What are your office hours?

Our Office Hours are Monday- Friday from 8:00 am to 5:00 pm. See Holiday Hours.

If you need emergency assistance, call Customer Service at 956-565-2491 during working hours (M-F 8am-5pm) or  1-800-580-8381 after working hours and on weekends. The call will be received by the Answering Service and the information relayed to the on-duty personnel.


Military Highway Water Supply Corp.
4000 US HWY 281
Mercedes, TX 78570