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Public water system record

Epcor - Lakeside

Serves Parker and Cienega Springs, La Paz County, AZ · 1,775 people served

Federal records show 7 health-based violations and 26 monitoring/reporting issues for Epcor - Lakeside in the last ten years. The most serious issue in this window was a resolved Interim Enhanced Surface Water Treatment Rule violation.

  • AZ0415010
  • EL MIRAGE
  • AZ
  • 1,775 served

System profile

Source water Surface water
ZIP 85335
EPA system ID AZ0415010

Verify this system on EPA ECHO →

Health-based violations, last 10 years
7
Resolved
7
Unresolved
0
Any acute record
Yes
Monitoring issues, last 10 years
26

Key facts

  • Epcor - Lakeside draws water from 1 surface water intake.
  • Record on file since 1982, with 6 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 863 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
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
 120 Nov 1, 2020 Resolved Yes
Surface Water Treatment Rule
Treatment technique failure
 120 Oct 1, 2020 Resolved No
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
 120 Oct 1, 2020 Resolved Yes
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
 120 Sep 1, 2020 Resolved Yes
Surface Water Treatment Rule
Treatment technique failure
 120 Sep 1, 2020 Resolved No
Surface Water Treatment Rule
Treatment technique failure
 120 Aug 1, 2020 Resolved No
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
 120 Aug 1, 2020 Resolved Yes

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Public Notice
OTHER
 Jul 2, 2021 Resolved
Public Notice
OTHER
 Jul 2, 2021 Resolved
Lead and Copper Rule
Monitoring and reporting
 Jan 1, 2021 Resolved
Public Notice
OTHER
 Nov 10, 2020 Resolved
Public Notice
OTHER
 Nov 10, 2020 Resolved
Chlorine
Monitoring and reporting
 Apr 1, 2020 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Feb 1, 2020 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Feb 1, 2020 Resolved
Revised Total Coliform Rule
Monitoring violation
 Dec 1, 2019 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Aug 1, 2019 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Aug 1, 2019 Resolved
Revised Total Coliform Rule
Monitoring violation
 Apr 1, 2019 Resolved
Revised Total Coliform Rule
RPT
 Mar 1, 2019 Resolved
Revised Total Coliform Rule
Monitoring violation
 Dec 1, 2018 Resolved
E. coli
Monitoring and reporting
 Nov 11, 2018 Resolved
E. coli
Monitoring and reporting
 Oct 14, 2018 Resolved
Revised Total Coliform Rule
Monitoring violation
 Sep 1, 2018 Resolved
Chlorine
Monitoring and reporting
 Apr 1, 2018 Resolved
Revised Total Coliform Rule
Monitoring violation
 Apr 1, 2018 Resolved
E. coli
Monitoring and reporting
 Mar 4, 2018 Resolved
E. coli
Monitoring and reporting
 Feb 18, 2018 Resolved
Revised Total Coliform Rule
Monitoring violation
 Feb 1, 2018 Resolved
Chlorine
Monitoring and reporting
 Jan 1, 2018 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
 Jan 1, 2018 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
 Jan 1, 2018 Resolved
E. coli
Monitoring and reporting
 Dec 10, 2017 Resolved

Full record since 1982

EPA's records for Epcor - Lakeside go back to 1982. Before October 19, 2016 they list 6 health-based violations (6 resolved) and 216 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1980s 0 24
1990s 1 88
2000s 0 48
2010 to October 18, 2016 5 56
October 19, 2016 to 2019 0 18
2020s 7 8

Most recent health-based violation before October 19, 2016: Interim Enhanced Surface Water Treatment Rule (acute), began December 2015, Resolved.

Show all 6 health-based violations before October 19, 2016
Contaminant Start date Status
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
 Dec 1, 2015 Resolved
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
 Nov 1, 2015 Resolved
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
 Oct 1, 2015 Resolved
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
 Jul 1, 2014 Resolved
Total Coliform
Contaminant limit exceeded
 Jan 1, 2011 Resolved
Surface Water Treatment Rule
Treatment technique failure
 Jan 1, 1992 Resolved

What the violations mean

Interim Enhanced Surface Water Treatment Rule

4 incidents

The system did not meet a filtration or treatment requirement for surface water

Inadequate treatment of surface water can let pathogens such as Cryptosporidium and Giardia through

Surface Water Treatment Rule

3 incidents

The system did not complete a treatment step or action that the Surface Water Treatment Rule requires (a treatment technique violation).

The utility had to notify customers about each of these violations.

Where the water comes from

Epcor - Lakeside draws water from 1 surface water intake.

Annual water quality report

Epcor - Lakeside 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 Arizona.

Certified drinking water labs by state EPA guidance for private wells