Public water system record

Scua Bylas

Serves an area of Graham County, AZ that includes Bylas · 3,160 people served

Federal records show 14 health-based violations and 59 monitoring/reporting issues for Scua Bylas in the last ten years, including an unresolved Groundwater Rule violation.

  • 090400110
  • SAN CARLOS
  • AZ
  • 3,160 served

System profile

Source water Groundwater
ZIP 85550
EPA system ID 090400110

Verify this system on EPA ECHO →

Health-based violations, last 10 years
14
Resolved
12
Unresolved
2
Any acute record
Yes
Monitoring issues, last 10 years
59

Key facts

  • Scua Bylas draws water from 3 wells.
  • Most recent formal enforcement: compliance order (no penalty) by EPA, February 2023.
  • Record on file since 1991, with 51 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 114 unknown out of 571 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
Groundwater Rule
Treatment technique failure
140 Oct 10, 2025 Active No
Surface Water Treatment Rule
Treatment technique failure
120 May 28, 2025 Resolved No
Revised Total Coliform Rule
Contaminant limit exceeded
110 Aug 1, 2024 Resolved Yes
Revised Total Coliform Rule
Contaminant limit exceeded
110 May 1, 2023 Resolved Yes
Revised Total Coliform Rule
Contaminant limit exceeded
110 May 1, 2023 Resolved Yes
Groundwater Rule
Treatment technique failure
140 Mar 4, 2023 Resolved No
Groundwater Rule
Treatment technique failure
140 Mar 4, 2023 Resolved No
Groundwater Rule
Treatment technique failure
140 Mar 4, 2023 Resolved No
Groundwater Rule
Treatment technique failure
140 Mar 4, 2023 Resolved No
Groundwater Rule
Treatment technique failure
140 Mar 4, 2023 Resolved No
Revised Total Coliform Rule
Treatment technique failure
110 Feb 1, 2023 Active
Enforcement action in place
No
Groundwater Rule
Treatment technique failure
140 Sep 1, 2022 Resolved No
Revised Total Coliform Rule
Treatment technique failure
110 Sep 30, 2018 Resolved No
Revised Total Coliform Rule
Treatment technique failure
110 Jul 1, 2017 Resolved 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
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Combined Radium (-226 and -228)
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Combined Uranium
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Gross Alpha, Excl. Radon and U
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Styrene
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Ethylbenzene
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Toluene
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Benzene
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
CHLOROBENZENE
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Tetrachloroethylene
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
1,1,2-Trichloroethane
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Trichloroethylene
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
1,2-Dichloropropane
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Carbon tetrachloride
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
1,1,1-Trichloroethane
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
1,2-Dichloroethane
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
trans-1,2-Dichloroethylene
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
1,1-Dichloroethylene
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Vinyl chloride
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
p-Dichlorobenzene
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
o-Dichlorobenzene
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
DICHLOROMETHANE
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
Xylenes, Total
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
cis-1,2-Dichloroethylene
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
1,2,4-Trichlorobenzene
Monitoring and reporting
Jul 1, 2025 Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
LEAD AND COPPER RULE REVISIONS
RPT
Nov 16, 2024 Active
Chlorine
Monitoring and reporting
Jul 1, 2024 Resolved
Chlorine
Monitoring and reporting
Apr 1, 2024 Resolved
Chlorine
Monitoring and reporting
Jan 1, 2024 Resolved
Chlorine
Monitoring and reporting
Oct 1, 2023 Resolved
Revised Total Coliform Rule
RPT
Jun 1, 2023 Resolved
Public Notice
OTHER
Mar 4, 2023 Resolved
Public Notice
OTHER
Mar 4, 2023 Resolved
Public Notice
OTHER
Mar 4, 2023 Resolved
Public Notice
OTHER
Mar 4, 2023 Resolved
Public Notice
OTHER
Mar 4, 2023 Resolved
Public Notice
OTHER
Feb 1, 2023 Resolved
Total Trihalomethanes (TTHMs)
Monitoring and reporting
Jan 1, 2023 Resolved
Haloacetic Acids (HAA5)
Monitoring and reporting
Jan 1, 2023 Resolved
Public Notice
OTHER
Sep 1, 2022 Resolved
Revised Total Coliform Rule
RPT
Aug 1, 2022 Resolved
Consumer Confidence Rule
OTHER
Jul 1, 2022 Resolved
Revised Total Coliform Rule
Monitoring violation
Aug 1, 2021 Resolved
Chlorine
Monitoring and reporting
Apr 1, 2021 Resolved
Revised Total Coliform Rule
RPT
Aug 1, 2019 Resolved
Revised Total Coliform Rule
RPT
Mar 1, 2019 Resolved
Revised Total Coliform Rule
RPT
Feb 1, 2019 Resolved
Revised Total Coliform Rule
RPT
Jan 1, 2019 Resolved
Revised Total Coliform Rule
RPT
Dec 1, 2018 Resolved
Revised Total Coliform Rule
RPT
Nov 1, 2018 Resolved
Revised Total Coliform Rule
RPT
Oct 1, 2018 Resolved
Public Notice
OTHER
Sep 30, 2018 Resolved
E. coli
Monitoring and reporting
Sep 1, 2018 Resolved
E. coli
Monitoring and reporting
Aug 1, 2018 Resolved
E. coli
Monitoring and reporting
Sep 1, 2017 Resolved
Consumer Confidence Rule
OTHER
Jul 1, 2017 Resolved
Public Notice
OTHER
Aug 1, 2014 Resolved
Public Notice
OTHER
Apr 1, 2014 Resolved
Public Notice
OTHER
Aug 1, 2013 Resolved

Full record since 1991

EPA's records for Scua Bylas go back to 1991. Before October 19, 2016 they list 51 health-based violations (51 resolved) and 301 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 3 72
2000s 41 185
2010 to October 18, 2016 7 44
October 19, 2016 to 2019 2 12
2020s 12 45

Most recent health-based violation before October 19, 2016: Revised Total Coliform Rule (acute), began August 2016, Resolved.

Show all 51 health-based violations before October 19, 2016
Contaminant Start date Status
Revised Total Coliform Rule (acute)
Contaminant limit exceeded
Aug 1, 2016 Resolved
Total Coliform
Contaminant limit exceeded
Aug 1, 2014 Resolved
Total Coliform
Contaminant limit exceeded
Apr 1, 2014 Resolved
Total Coliform
Contaminant limit exceeded
Aug 1, 2013 Resolved
Total Coliform
Contaminant limit exceeded
Oct 1, 2012 Resolved
Total Coliform
Contaminant limit exceeded
Apr 1, 2011 Resolved
Total Coliform
Contaminant limit exceeded
Jun 1, 2010 Resolved
Total Coliform
Contaminant limit exceeded
Oct 1, 2008 Resolved
Total Coliform
Contaminant limit exceeded
Jul 1, 2008 Resolved
Total Coliform
Contaminant limit exceeded
Jun 1, 2008 Resolved
Total Coliform
Contaminant limit exceeded
May 1, 2008 Resolved
Total Coliform
Contaminant limit exceeded
Feb 1, 2008 Resolved
Total Coliform
Contaminant limit exceeded
Jan 1, 2008 Resolved
Total Coliform
Contaminant limit exceeded
Dec 1, 2007 Resolved
Total Coliform
Contaminant limit exceeded
Nov 1, 2007 Resolved
Total Coliform
Contaminant limit exceeded
Sep 1, 2007 Resolved
Total Coliform
Contaminant limit exceeded
Aug 1, 2007 Resolved
Total Coliform (acute)
Contaminant limit exceeded
Jul 1, 2007 Resolved
Total Coliform
Contaminant limit exceeded
Jun 1, 2007 Resolved
Total Coliform
Contaminant limit exceeded
Apr 1, 2007 Resolved
Total Coliform
Contaminant limit exceeded
Mar 1, 2007 Resolved
Total Coliform
Contaminant limit exceeded
Feb 1, 2007 Resolved
Total Coliform
Contaminant limit exceeded
Dec 1, 2006 Resolved
Total Coliform
Contaminant limit exceeded
Nov 1, 2006 Resolved
Total Coliform
Contaminant limit exceeded
Oct 1, 2006 Resolved
Total Coliform
Contaminant limit exceeded
Sep 1, 2006 Resolved
Total Coliform
Contaminant limit exceeded
Aug 1, 2006 Resolved
Total Coliform
Contaminant limit exceeded
Jul 1, 2006 Resolved
Total Coliform
Contaminant limit exceeded
Apr 1, 2006 Resolved
Total Coliform
Contaminant limit exceeded
Mar 1, 2006 Resolved
Total Coliform
Contaminant limit exceeded
Feb 1, 2006 Resolved
Total Coliform
Contaminant limit exceeded
Jan 1, 2006 Resolved
Total Coliform
Contaminant limit exceeded
Dec 1, 2005 Resolved
Total Coliform
Contaminant limit exceeded
Nov 1, 2005 Resolved
Total Coliform
Contaminant limit exceeded
Sep 1, 2005 Resolved
Total Coliform
Contaminant limit exceeded
Aug 1, 2005 Resolved
Total Coliform
Contaminant limit exceeded
Jul 1, 2005 Resolved
Total Coliform
Contaminant limit exceeded
Apr 1, 2005 Resolved
Total Coliform
Contaminant limit exceeded
Mar 1, 2005 Resolved
Total Coliform
Contaminant limit exceeded
Feb 1, 2005 Resolved
Total Coliform
Contaminant limit exceeded
Jul 1, 2004 Resolved
Total Coliform
Contaminant limit exceeded
Jun 1, 2004 Resolved
Total Coliform
Contaminant limit exceeded
Aug 1, 2003 Resolved
Total Coliform
Contaminant limit exceeded
Jul 1, 2003 Resolved
Total Coliform
Contaminant limit exceeded
Jun 1, 2003 Resolved
Total Coliform
Contaminant limit exceeded
May 1, 2003 Resolved
Total Coliform
Contaminant limit exceeded
Jul 1, 2001 Resolved
Total Coliform
Contaminant limit exceeded
Mar 1, 2000 Resolved
Total Coliform (acute)
Contaminant limit exceeded
Aug 1, 1997 Resolved
Total Coliform (acute)
Contaminant limit exceeded
Sep 1, 1996 Resolved

1 older violations are not listed here. EPA ECHO has the complete list.

Enforcement actions

EPA took 2 formal enforcement actions against Scua Bylas between 2011 and 2023, filed as 31 records in EPA's data. The most recent was a compliance order (no penalty) in February 2023.

Date By Action Violations covered
Feb 28, 2023 EPA Compliance order (no penalty) 1 violation: Public Notice
Nov 4, 2011 EPA Compliance order (no penalty) 35 violations (9 health-based): Public Notice, Revised Total Coliform Rule, E. coli, Consumer Confidence Rule, Total Coliform

What the violations mean

Groundwater Rule

7 incidents

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

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

Revised Total Coliform Rule

6 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

Surface Water Treatment Rule

1 incident

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 this violation.

Where the water comes from

Scua Bylas draws water from 3 wells.

Annual water quality report

Scua Bylas 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.