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Water Quality Reports |
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2015 Water Quality Report - Cameron County Service Area ID #
1080067
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2015 Water Quality Report - Hidalgo County Service Area ID # 1080234
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2015 Water Quality Report - Weslaco Service Area ID #
1080235
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2015 Water Quality Report - Del Mar Heights Service Area ID #
0310147
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2014 April & May Turbidity Violation Notice
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May 8, 2015 - MCL TTHM Violation Notice
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May 28, 2015 - MCL, AVERAGE / ARSENIC - 1080067
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July 8, 2015 - City of Weslaco - Public Notice of Boil
Water
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July 9, 2015 - City of Weslaco - Boil Water Rescind
Notice
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July 28, 2015 - Rangerville & FM800 Customers - Public Notice of Boil
Water
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July 30, 2015 - Rangerville & FM800 Customers - Boil Water Rescind
Notice
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August 14, 2015 - MCL Avergage/Arsenic - 1080067
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November 13, 2015 - MCL, Average/Arsenic - 1080067
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January 20, 2016 - Lead and Copper Rule Monitoring and Reporting
Violation - 1080234
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August 2, 2016 - MCL, Average/Arsenic - 1080067
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October 12, 2016 - MCL, LRAA TTHM - 1080067
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October 12, 2016 - MCL, Average Arsenic - 1080067
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December 29, 2016 - MCL, Average Arsenic - 1080067
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March 9, 2017 - Bluetown, Los Indios and South Rangerville - Public
Notice to Boil Water
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March 13, 2017 - MCL, LRAA TTHM (fourth quarter of 2016) -
1080067
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March 13, 2017 - MCL, Average Arsenic (fourth quarter of 2016) -
1080067
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March 14, 2017 - Bluetown, Los Indios and South Rangerville - Boil Water
Rescind Notice - 1080067
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June 23, 2017 - MCL, Average Arsenic (quarter one 2017) -
1080067
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June 23, 2017 - MCL, LRAA TTHM - Trihalomethane (quarter one 2017) -
1080067
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2016 Annual Drinking Water Quality Report - Consumer Confidence Report -
Las Rusias WTP - 1080067
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2016 Annual Drinking Water Quality Report - Consumer Confidence Report -
Del Mar Heights - 0310147
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2016 Annual Drinking Water Quality Report - Consumer Confidence Report -
South Weslaco - 1080235
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2016 Annual Drinking Water Quality Report - Consumer Confidence Report -
Progreso - 1080234
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August 25, 2017 - MCL, LRAA TTHM - Trihalomethane (quarter two 2017) -
1080067
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September 12, 2017 - ERHWSC - changing the primary disinfectant from
Chloramine to Free Chlorine on October 2, 2017 through October 31, 2017 (only to the Del Mar
Height-0310147 customer)
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December 13, 2017 - MCL, LRAA TTHM - Trihalomethane (quarter three 2017)
- 1080067
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January 19, 2018 - MCL, LRAA TTHM - Trihalomethane (quarter four 2017) -
1080067
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2017 Annual Drinking Water Quality Report - Consumer Confidence Report -
Las Rusias WTP - 1080067
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2017 Annual Drinking Water Quality Report - Consumer Confidence Report -
Progreso - 1080234
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2017 Annual Drinking Water Quality Report - Consumer Confidence Report -
Weslaco - 1080235
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2017 Annual Drinking Water Quality Report - Consumer Confidence Report -
Del Mar Heights - 0310147
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07-20-2018 - East Rio Hondo Water Supply Corporation - WHOLESALE CUST.
FCL2 NOTICE
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08-06-2018 - Total Haloacetic Acids (HAA5) - 1080067 - (quarter two
2018)
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08-06-2018 - TTHM - Trihalomethane - 1080067 - (quarter two
2018)
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02-20-2019 - Total Haloacetic Acids (HAA5) - 1080067 - (quarter three
2018)
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02-20-2019 - Total Haloacetic Acids (HAA5) - 1080067 - (quarter four
2018)
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05-09-2019 - Boil Water Notice - south Alamo & south San Juan
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05-11-2019 - MHWSC - Boil Water Rescind Notice (south Alamo & south San
Juan)
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05-31-2019 - TTHM - Trihalomethane - 1080067 - quarter four
2018
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05-31-2019 - TTHM - Trihalomethane - 1080067 - quarter one
2019
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05-31-2019 - Total Haloacetic Acids (HAA5) - 1080067 - quarter one
2019
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2018 Annual Drinking Water Quality Report - Consumer Confidence Report -
Las Rusias WTP 1080067
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2018 Annual Drinking Water Quality Report - Consumer Confidence Report -
Progreso 10800234
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2018 Annual Drinking Water Quality Report - Consumer Confidence Report -
Weslaco 1080235
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2018 Annual Drinking Water Quality Report - Consumer Confidence Report -
Del Mar Heights 0310147
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09-23-2019 - TTHM - Trihalomethane - 1080067 - quarter two 2019 (public
notice)
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2019 Annual Drinking Water Quality Report - Consumer Confidence Report - Las Rusias WTP 1080067
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2019 Annual Drinking Water Quality Report - Consumer Confidence Report - Progreso 10800234
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2019 Annual Drinking Water Quality Report - Consumer Confidence Report - Weslaco 1080235
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2019 Annual Drinking Water Quality Report - Consumer Confidence Report - Del Mar Heights 0310147
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ERHWSC 07-08-2020 WHOLESALE CUST. FCL2 NOTICE
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Lead & Copper Rul Monitoring and Reporting Violation Mandatory Language - Tier III - 1080067 (public notice)
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06-21-2021 - Harlingen Waterworks System - Planned Temporary Change in Treatment Method
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06-21-2021 - East Rio Hondo Water Supply Corporation - WHOLESALE CUST. FCL2 NOTICE
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2020 Annual Drinking Water Quality Report - Consumer Confidence Report - Las Rusias WTP 1080067
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2020 Annual Drinking Water Quality Report - Consumer Confidence Report - Progreso 10800234
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2020 Annual Drinking Water Quality Report - Consumer Confidence Report - Weslaco 1080235
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2020 Annual Drinking Water Quality Report - Consumer Confidence Report - Del Mar Heights 0310147
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07-03-2021 - Boil Water Notice for Customers in Cameron County (1080067)
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07-05-2021 - Boil Water Notice Rescinded for Customers in Cameron County (1080067)
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02-15-2021 - MHWSC - Boil Water Notice (Del Mar Heights area) - 0310147
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02-15-2021 - MHWSC - Boil Water Notice (El Ranchito, La Paloma and Los Indios) - 1080067
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02-15-2021 - MHWSC - Boil Water Notice (South Alamo, Runn, Progreso and Progreso Lakes) - 1080234
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02-16-2021 - MHWSC - Update - Boil Water Notice (El Ranchito, La Paloma, Los Indios, Santa Maria and Bluetown) - 1080067
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02-23-2021 - MHWSC - Boil Water Notice Rescinded (Del Mar Heights area) - 0310147
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02-23-2021 - MHWSC - Boil Water Notice Rescinded (South Alamo, Runn, Progreso and Progreso Lakes) - 1080234
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02-24-2021 - MHWSC - Boil Water Notice Rescinded (El Ranchito, La Paloma and Los Indios) - 1080067
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10-15-2021 - MCL, Average Arsenic (third quarter 2021) - 1080067.pdf
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01-14-2022 - MCL, Average Arsenic (fourth quarter 2021) - 1080067
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All Public Water Systems, like MHWSC, are required by the Safe Drinking Water Act to
provide a Water Quality Report to its consumers on an annual basis to report the type and quantity of substances that
are found in our water. Each Service Area has its own report since the source of water is different for each system.
The report is designed to inform you about the quality of the water we deliver to you 24 hours a day, 365 days a year.
The report details where your water comes from, what it contains, and how that compares with regulatory standards. Our
constant goal is to provide you with a safe and dependable supply of drinking water. We are committed to ensuring
the quality of your drinking water. We want you to have the information in the report so you will be able to
understand and support the efforts needed to maintain the high standards required of our drinking water. The sources
of drinking water (both tap and bottled water) include rivers, lakes, streams, ponds, reservoirs, springs, and wells.
As water travels over the surface of the land or through the ground, it dissolves naturally occurring minerals, and in
some cases, can pick up substances resulting from the presence of animals or from human activity. Our water sources
include ground water from multiple wells that pump from the Rio Grande Alluvial Aquifer and surface water from the Rio
Grande River. The presence of contaminants in drinking water, including bottled water, does not necessarily indicates
that it poses a health risk.
In order to assure tap water is safe to drink, the Environmental Protection Agency (EPA)
prescribes regulations which limit the amounts of certain contaminants in water provided by public water systems. The
Food and Drug Administration (FDA) prescribes regulations which establish limits for contaminants in bottled water
which must provide the same protection for public health. The data in this report was prepared from the most recent
required tests set by the EPA. The Texas Commission on Environmental Quality conducts most of the water quality tests
and provides the results for this report.
Some people may be more vulnerable to contaminants in drinking water than the general
population. Immuno-compromised persons such as persons with cancer undergoing chemotherapy, persons who have undergone
organ transplants, people with HIV/AIDS or other immune system disorders, some elderly, and infants can be
particularly at risk from infections. These persons should seek advise about drinking water from their health care
providers. If you have any questions about these reports, contact the main office.
Este reporte incluye informaciÓn importante
sobre su agua de beber. Para obtener una copia de Éste reporte
en Espanol, llÁme a la
oficina central al telÉfono (956)
565-2491.
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