Public water system record

Sharyland WSC

Serves an area of Hidalgo County, TX that includes McAllen, Alton, La Homa and 3 more places · 68,562 people served

Federal records show 1 health-based violation and 1 monitoring/reporting issue for Sharyland WSC in the last ten years. The most serious issue in this window was a resolved Chlorite violation.

  • TX1080033
  • MISSION
  • TX
  • 68,562 served

System profile

Source water Surface water
ZIP 78573
EPA system ID TX1080033

Verify this system on EPA ECHO →

Health-based violations, last 10 years
1
Resolved
1
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
1

Key facts

  • Sharyland WSC draws water from 3 surface water intakes.
  • Highest measured level in the last 10 years: Chlorite, 1.4 mg/L, federal limit 1 mg/L (1.4 times the limit), 2019.
  • Most recent enforcement action: boil water order by Texas, April 2015.
  • Record on file since 2003, with 1 health-based violation before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 22,335 service lines.

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Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

Contaminant Rule family Start date Status Acute
Chlorite
Contaminant limit exceeded
Measured 1.4 mg/L, federal limit 1 mg/L (1.4 times the limit)
210 Jan 1, 2019 Resolved No

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
Chlorite
Monitoring and reporting
Nov 1, 2018 Resolved

Full record since 2003

EPA's records for Sharyland WSC go back to 2003. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 2 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
2000s 0 1
2010 to October 18, 2016 1 1
October 19, 2016 to 2019 1 1

Most recent health-based violation before October 19, 2016: Total Coliform (acute), began April 2015, Resolved.

Show the health-based violation before October 19, 2016
Contaminant Start date Status
Total Coliform (acute)
Contaminant limit exceeded
Apr 1, 2015 Resolved

Enforcement actions

Texas regulators issued 1 boil water order to Sharyland WSC in 2015. The most recent was a boil water order in April 2015.

Date By Action Violations covered
Apr 9, 2015 Texas Boil water order 1 violation (1 health-based): Total Coliform

What the violations mean

Chlorite

1 incident

Test results for Chlorite were above the federal limit (a maximum contaminant level violation).

The utility had to notify customers about this violation.

Where the water comes from

Sharyland WSC draws water from 3 surface water intakes. 1 other public water system has an emergency connection to Sharyland WSC.

Annual water quality report

Sharyland WSC must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.

Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.

Find a posted report with EPA's Consumer Confidence Report search

Testing your own water

To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Texas.