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Public water system record

Naco Estates

Serves Naco, Cochise County, AZ · 75 people served

Federal records show 3 health-based violations and 11 monitoring/reporting issues for Naco Estates in the last ten years. The most serious issue in this window was a resolved LEAD AND COPPER RULE REVISIONS violation.

  • AZ0402345
  • SIERRA VISTA
  • AZ
  • 75 served

System profile

Source water Groundwater
ZIP 85635
EPA system ID AZ0402345

Verify this system on EPA ECHO →

Health-based violations, last 10 years
3
Resolved
3
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
11

Key facts

  • Naco Estates draws water from 1 well.
  • Record on file since 1980, with 0 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 29 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
Revised Total Coliform Rule
Treatment technique failure
 110 Sep 30, 2024 Resolved No
Revised Total Coliform Rule
Treatment technique failure
 110 Sep 11, 2022 Resolved No

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Consumer Confidence Rule
OTHER
 Oct 2, 2025 Active
Consumer Confidence Rule
OTHER
 Jul 1, 2025 Active
Public Notice
OTHER
 Dec 20, 2024 Resolved
E. coli
Monitoring and reporting
 Dec 5, 2024 Resolved
LEAD AND COPPER RULE REVISIONS
RPT
 Oct 17, 2024 Resolved
E. coli
Monitoring and reporting
 Jul 11, 2024 Resolved
Consumer Confidence Rule
OTHER
 Oct 2, 2022 Resolved
Consumer Confidence Rule
OTHER
 Jul 1, 2022 Resolved
Revised Total Coliform Rule
RPT
 Nov 1, 2020 Resolved
Lead and Copper Rule
Monitoring and reporting
 Oct 1, 2020 Resolved
Lead and Copper Rule
Monitoring and reporting
 Nov 3, 2017 Resolved

Full record since 1980

EPA's records for Naco Estates go back to 1980. Before October 19, 2016 they list no health-based violations and 14 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1980s 0 1
1990s 0 2
2010 to October 18, 2016 0 11
October 19, 2016 to 2019 0 1
2020s 3 10

What the violations mean

Revised Total Coliform Rule

2 incidents

The system did not meet a requirement of the Revised Total Coliform Rule

Coliform and E. coli rules protect against bacteria in the distribution system

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

Naco Estates draws water from 1 well. It also has an emergency connection to Naco Water Co Main.

Emergency or part-time connections to

Annual water quality report

Naco Estates 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 Naco Estates 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 Arizona.

Certified drinking water labs by state EPA guidance for private wells