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Public water system record

Tse' Yi' Gai High School

On record as serving McKinley County, NM · Serves 126 people

Federal records show 1 health-based violation and 10 monitoring/reporting issues for Tse' Yi' Gai High School in the last ten years. The most serious issue in this window was a Total Trihalomethanes (TTHMs) violation that EPA lists as archived, not resolved.

  • 093534009
  • GALLUP
  • NM
  • 126 served

System profile

Source water Purchased surface water
ZIP 87301
EPA system ID 093534009

Verify this system on EPA ECHO →

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

Key facts

  • Tse' Yi' Gai High School buys its water from Ojo Encino North NTUA.
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.0858 mg/L, federal limit 0.08 mg/L (1.1 times the limit), 2023.
  • Record on file since 2013, with 0 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 16 service lines.

Check whether Tse' Yi' Gai High School serves your address

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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
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.0858 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 220 Oct 1, 2023 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
 No

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Chlorine
Monitoring and reporting
 Oct 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Revised Total Coliform Rule
Monitoring violation
 Mar 1, 2021 Resolved
Revised Total Coliform Rule
Monitoring violation
 Feb 1, 2021 Resolved
E. coli
Monitoring and reporting
 Jul 1, 2019 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Apr 1, 2019 Resolved
Revised Total Coliform Rule
Monitoring violation
 Jan 1, 2019 Resolved
Revised Total Coliform Rule
Monitoring violation
 Jan 1, 2017 Resolved
Revised Total Coliform Rule
Monitoring violation
 Dec 1, 2016 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Jan 1, 2016 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Jan 1, 2016 Resolved

Full record since 2013

EPA's records for Tse' Yi' Gai High School go back to 2013. Before October 19, 2016 they list no health-based violations and 8 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
2010 to October 18, 2016 0 8
October 19, 2016 to 2019 0 5
2020s 1 3

What the violations mean

Total Trihalomethanes (TTHMs)

1 incident

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Where the water comes from

Tse' Yi' Gai High School buys its water from Ojo Encino North NTUA. It lists no wells or intakes of its own.

Buys water from

Annual water quality report

Tse' Yi' Gai High School 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 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Tse' Yi' Gai High School for a copy.

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 EPA Region 9.

Certified drinking water labs by state EPA guidance for private wells