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Public water system record

City of Mount Holly

Serves Mount Holly, Gaston County, NC · 19,200 people served

Federal records show no health-based violations and 4 monitoring/reporting issues for City of Mount Holly in the last ten years.

  • NC0136020
  • MOUNT HOLLY
  • NC
  • 19,200 served

System profile

Source water Surface water
ZIP 28120
EPA system ID NC0136020

Verify this system on EPA ECHO →

Health-based violations, last 10 years
0
Resolved
0
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
4

Key facts

  • City of Mount Holly draws water from 1 surface water intake.
  • Most recent formal enforcement: compliance order (no penalty) by North Carolina, March 2025.
  • Record on file since 1989, with 0 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 347 unknown out of 9,430 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.

None since October 2016.

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Jan 1, 2025 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Sep 1, 2022 Resolved
Chlorine
Monitoring and reporting
 Oct 1, 2020 Resolved
Revised Total Coliform Rule
Monitoring violation
 Oct 1, 2020 Resolved

Full record since 1989

EPA's records for City of Mount Holly go back to 1989. Before October 19, 2016 they list no health-based violations and 18 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1980s 0 12
1990s 0 1
2000s 0 4
2010 to October 18, 2016 0 1
2020s 0 4

Enforcement actions

North Carolina regulators took 10 formal enforcement actions against City of Mount Holly between 2008 and 2025. The most recent was a compliance order (no penalty) in March 2025.

Date By Action Violations covered
Mar 17, 2025 North Carolina Compliance order (no penalty) 1 violation: Total Trihalomethanes (TTHMs)
Jul 10, 2023 North Carolina Compliance order with a penalty 1 violation: Haloacetic Acids (HAA5)
Jan 26, 2023 North Carolina Compliance order (no penalty) 1 violation: Haloacetic Acids (HAA5)
Feb 19, 2021 North Carolina Compliance order with a penalty 1 violation: Revised Total Coliform Rule
Dec 1, 2020 North Carolina Compliance order (no penalty) 1 violation: Chlorine
Nov 23, 2020 North Carolina Compliance order (no penalty) 1 violation: Revised Total Coliform Rule
Feb 23, 2017 North Carolina Compliance order with a penalty 1 violation: CARBON, TOTAL
Aug 4, 2016 North Carolina Compliance order (no penalty) 1 violation: CARBON, TOTAL
Nov 25, 2008 North Carolina Compliance order with a penalty 1 violation: Dalapon
Aug 22, 2008 North Carolina Compliance order with a penalty 1 violation: Dalapon

Where the water comes from

City of Mount Holly draws water from 1 surface water intake. It also has an emergency connection to City of Belmont. 1 other community water system buys water from City of Mount Holly. 1 other public water system has an emergency connection to City of Mount Holly.

Emergency or part-time connections to

Community systems that buy water from it

Annual water quality report

City of Mount Holly 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 North Carolina.

Certified drinking water labs by state EPA guidance for private wells