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NOTE: Payments made after 7:00pm will not be considered paid until the next business day, late fees and disconnect fees will not be waived if incurred during this time frame.

AVISO: Pagos realizados después de las 7:00pm serán considerados hasta el día siguiente (de negocios), recargospor pago tardío o desconección no serán removidos si se incurrenen éste periodo de tiempo.

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Important Notice/Aviso Importante



On September 23, 2019, at 6:00 a.m. East Rio Hondo Water Supply Corporation (PWS ID 0310096) and Arroyo City (PWS ID 0310031) will change our primary disinfectant from "Chloramines" to "Free Chlorine". The change in disinfectant is conducted as an annual distribution maintenance procedure in order to reduce nitrification, taste, and odor issues throughout our distribution system. It will take time after the change in disinfectants for the conversion to take place in the distribution system. We will be using free chlorine for a 30 day period. The 30 day period will end on the morning of October 24, 2019. After that time period ERHWSC will revert back to Chloramines for our disinfection process. During this conversion process, both to and from free chlorine, a stronger chlorine/bleach odor may be apparent in your drinking water, as these odors are a product of the breakdown of chloramine by free chlorine. All regulatory requirements will be adhered to during this process in regards to the level of chlorine in your drinking water. E.R.H.W.S.C. advises any customers with medical conditions affected by Free Chlorination to consult medical professionals in regards to any affects concerning consuming chlorinated drinking water. If you have any questions, please contact Amanda M. Ramos, Administrative Services Manager at (956)247-7817.

Para ver este mensaje en español oprima aqui.

**Click here to view more information regarding "Free Chlorine".

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East Rio Hondo Water Supply Corporation

Create an Account - To pay your bill online customers will have to setup an account on the new site, just visit then select the Pay My Bill and click the Register button if you are a first time user. Once you set up your account, you'll be able to view and pay your bill online. You can also use our iOS or Android App. Once your account is setup you will be able to:erh img building 2

  • Pay by Electronic Check – Use this option to make a one-time payment using an online electronic check.
  • Make a One-Time Payment – This feature enables you to make a one-time payment using a credit/debit card, Visa, MasterCard or Discover.
  • Manage Multiple Properties - If you manage several properties you will be able to make payments for multiple properties with a single transaction.
  • View Payment Usage and Payment History - You can easily review your payment and billing history online.
  • Print or e-mail Payment Receipts – customers will be able to view and Print past payments.

Click here for more information on online payment.

*No additional fees will be charged for payments using credit and debit cards. ERHWSC does not accept American Express at this time.In addition to the online payment option, ERHWSC's customer service will continue to accept existing methods of payments: by mail, in-person at 206 Industrial Pkwy, by telephone, as well as other online payment opportunities.

We are glad that you have visited the ERHWSC website. We have been providing potable water services for both residential and commercial customers since 1982. Our mission has been to promote the efficient use of water at an affordable price as well as a dedication to achieving a cleaner environment. ERHWSC currently provides services for parts of Cameron and Willacy counties in the beautiful Rio Grande Valley of Texas.

To provide you with better customer service, New Service Applicants will be seen by appointment as follows:


8:30 - 11:30 am | Closed 12-1 pm | 1:30 - 4:00 pm

Applicants with appointments will be seen before Walk-in applicants. 


Service applications are taken Monday through Friday by calling (956)748-3633 to schedule your appointment.  Required documents to establish service: Deed (proof of ownership) & picture ID.


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