McAllen Showcases Procedures Used to Prevent Water Contamination: McAllen Public Utility provides water to more than 120,000 customers.
KRISTV.com | Continuous News Coverage | Corpus Christi Most us began Thursday morning with news of yet another water supply problem. By lunch time, we knew why: Ergon Asphalt and Emulsions, Inc. on Up River Road does not have a backflow preventer. Or, the one they do have, failed. And so, city officials tell us a couple of chemicals - one of them, hydrochloric acid - got into our water supply.