Public water system record

Oljato NTUA

On record as serving San Juan County, UT · Serves 1,276 people

Federal records show no health-based violations and 4 monitoring/reporting issues for Oljato NTUA in the last ten years. At least one of these issues remains unresolved.

  • NN4900224
  • FT DEFIANCE
  • AZ
  • 1,276 served

System profile

Source water Groundwater
ZIP 86504
EPA system ID NN4900224

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

Key facts

  • Oljato NTUA draws water from 3 wells.
  • Record on file since 2005, with 2 health-based violations before October 19, 2016.

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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, 2020 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
Jan 1, 2020 Resolved
Revised Total Coliform Rule
OTHER
Apr 1, 2016 Active
Stage 2 Disinfection Byproducts Rule
Monitoring and reporting
Oct 1, 2013 Active

Full record since 2005

EPA's records for Oljato NTUA go back to 2005. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 29 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
2000s 0 24
2010 to October 18, 2016 2 5
2020s 0 2

Most recent health-based violation before October 19, 2016: Antimony, Total, began January 2012, Resolved.

Show all 2 health-based violations before October 19, 2016
Contaminant Start date Status
Antimony, Total
Contaminant limit exceeded
Measured 0.01 mg/L, federal limit 0.006 mg/L (1.7 times the limit)
Jan 1, 2012 Resolved
Antimony, Total
Contaminant limit exceeded
Measured 0.007 mg/L, federal limit 0.006 mg/L (1.2 times the limit)
Oct 1, 2010 Resolved

Where the water comes from

Oljato NTUA draws water from 3 wells.

Annual water quality report

Oljato NTUA 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 EPA Region 9.