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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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On October 2, 2017, 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 and biofilm 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 4 weeks. The 4-week period will end on October 31, 2017 at 6:00 a.m. After that time period ERHWSC will revert back to Chloramines for our disinfection process. During this conversion process 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.

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Spider FAQ
  • 1. Why does my water appear milky or cloudy?

    A milky or cloudy appearance is usually caused by air bubbles in the water, which pose no health risk. If the water is allowed to sit, the air will dissipate and the water will clear. If the cloudiness does not disappear, please contact us so that we may investigate.

  • 2. What causes the spots on my dishes?

    Spots are caused by hard water, or minerals that remain after the water has evaporated. Spots can be eliminated through use of a dishwasher rinse agent.

  • 3. Should I buy a water softener?

    The hardness of water varies with the water's source. The choice to buy a softener is an aesthetic one, since hard water is not harmful to health. However, water softeners typically increase the sodium content of the water, a factor that should be considered by people on low-sodium diets.

  • 4. Should I buy a home filtration unit?

    According to the United States Environmental Protection Agency, home treatment units are rarely necessary for health reasons. Most often, water treatment units are used to remove substances that affect the aesthetic qualities of the water. If you do choose to install a home treatment unit, it is important to follow the manufacturer's maintenance instructions, because improperly maintained units can actually cause water quality problems.

  • 5. What should I do if my coffee has an oily appearance?

    Clean your coffee maker with vinegar and water as directed by the manufacturer.

  • 6. What causes odor in the hot water?

    The most common cause of odor in hot water is the water heater. If your cold water smells fine, check your water heater to ensure that the temperature setting is correct. Water heaters also need to be maintained (see manufacturer's instructions). Please contact us if the odor persists or if it is present in both the hot and cold water.

  • 7. What causes some water to be discolored?

    Color in water is usually caused by naturally occurring organic matter, minerals, or mineral build-up in the pipes. We flush our water system regularly to clean mineral build-up and other sediment from the pipes. If you receive discolored water, you should let your faucets run until the water is clear. Such substances typically do not pose a health hazard; however, we ask that you please report any instances of discolored water so that we may investigate.

  • 8. Is bottled water higher quality than tap water?

    Tap water providers and bottled water providers must meet the same water quality standards. In fact, tap water providers are required to conduct more frequent water quality testing and reporting than bottled water providers. Some consumers prefer the taste of bottled water, and some choose bottled water because they have special health needs. But tap water is a much better deal at costs of 1,000 times less than bottled water.

  • 9. Why are our fire hydrants painted black and what is their purpose?

    Fire hydrants colored in black are non-functioning or otherwise unavailable for fire suppression use. A device is considered non-functioning if it pumps less than 250 gallons of water per minute.We use them to conduct regular water system flushing to remove any mineral build-up and sediment from the pipes and also to ensure that water circulates adequately throughout the system.

  • 10. Why does water need to be disinfected?

    Disinfectants are required because they prevent the spread of germs that cause diseases. Years ago, before disinfectants were used for drinking water, diseases such as cholera, typhoid fever, and dysentery were common. Drinking water disinfection has vastly improved the quality and safety of drinking water.

  • 11. Why does my water have a chlorine taste (or smell)?

    We disinfect your water to ensure that it is free of harmful bacteria. To reduce any chlorine taste or smell, try refrigerating your water before drinking.

  • 12. Why is there dirt or sand in my water?

    Dirt or sand can occur naturally in groundwater or as a result of a water line repair. We try to reduce the instances of dirt or sand in the water through regular flushing, which improves water quality by increasing the circulation of water in the pipes and removing most of the sediment from the water.

  • 13. Why does the taste of my water change throughout the year?

    Water sources change at certain times of the year due to the availability of supplies. Surface water, or water that comes from sources like rivers and lakes, tends to taste slightly different than water pumped from underground aquifers.

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