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Public water system record

Mount Zion WSC

Serves an area of Rockwall County, TX that includes Rockwall · 2,028 people served

Federal records show 1 health-based violation and 6 monitoring/reporting issues for Mount Zion WSC in the last ten years. The most serious issue in this window was a resolved LEAD AND COPPER RULE REVISIONS violation.

  • TX1990010
  • ROCKWALL
  • TX
  • 2,028 served

System profile

Source water Purchased surface water
ZIP 75087
EPA system ID TX1990010

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
6

Key facts

  • Mount Zion WSC buys its water from North Texas MWD Wylie WTP.
  • Record on file since 2011, with 2 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 673 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
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
 350 Oct 17, 2024 Resolved No

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Lead and Copper Rule
Monitoring and reporting
 Dec 30, 2025 Active
Public Notice
OTHER
 May 15, 2025 Active
LEAD AND COPPER RULE REVISIONS
RPT
 Oct 17, 2024 Resolved
Public Notice
OTHER
 Sep 25, 2017 Active
Public Notice
OTHER
 Jan 16, 2017 Active
Chlorine
Monitoring and reporting
 Jan 1, 2017 Resolved

Full record since 2011

EPA's records for Mount Zion WSC go back to 2011. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 6 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
2010 to October 18, 2016 2 6
October 19, 2016 to 2019 0 3
2020s 1 3

Most recent health-based violation before October 19, 2016: Lead and Copper Rule, began April 2014, Resolved.

Show all 2 health-based violations before October 19, 2016
Contaminant Start date Status
Lead and Copper Rule
Treatment technique failure
 Apr 1, 2014 Resolved
Lead and Copper Rule
Treatment technique failure
 Dec 1, 2013 Resolved

What the violations mean

LEAD AND COPPER RULE REVISIONS

1 incident

The system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).

The utility had to notify customers about this violation.

Where the water comes from

Mount Zion WSC buys its water from North Texas MWD Wylie WTP. It lists no wells or intakes of its own. It also has an emergency connection to City of Rockwall.

Buys water from

Emergency or part-time connections to

Annual water quality report

Mount Zion 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.

Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.

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.

Certified drinking water labs by state EPA guidance for private wells