Is HARRIS COUNTY MUD 105 required to publish a Consumer Confidence Report?

Yes. HARRIS COUNTY MUD 105 is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is HARRIS COUNTY MUD 105’s next Consumer Confidence Report due?

HARRIS COUNTY MUD 105’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

HOUSTON, TX · Harris County

HARRIS COUNTY MUD 105 Water System

Consumer Confidence Report status

HARRIS COUNTY MUD 105 must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for HARRIS COUNTY MUD 105.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Texas’s official records. Always confirm current status with Texas before making decisions based on this information.

System facts

System ID (PWSID): TX1011227
System type: Community Water System
Population served: 14,925
Service connections: 4,975
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

HARRIS COUNTY MUD 105 is one of 385 community water systems in Texas in the 10,001 to 100,000 people size category, serving 14,925 people from surface water.

As of August 1, 2026, its federal record holds 13 entries between 2008 and 2012, all of which EPA lists as closed. Nothing has been added since 2012.

Of the 13, 1 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves the Radionuclides and Revised Rad Rule, the Public Notice Rule and Revised PN Rule, and inorganic chemicals.

Violation history

Public Notification Violation for NPDWR Violation
—
Public Notice
July 2, 2012 – October 11, 2011
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
June 27, 2012 – October 11, 2011
Resolved
Public Notification Violation for NPDWR Violation
—
Public Notice
April 28, 2012 – October 11, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2011 – December 31, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2011 – September 30, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Combined Radium (-226 and -228)
January 1, 2011 – March 31, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Gross Alpha, Excl. Radon and U
October 1, 2010 – December 31, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Gross Alpha, Excl. Radon and U
January 1, 2010 – March 31, 2010
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Gross Alpha, Excl. Radon and U
October 1, 2009 – December 31, 2009
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
October 1, 2009 – October 31, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Gross Alpha, Excl. Radon and U
July 1, 2009 – September 30, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Gross Alpha, Excl. Radon and U
April 1, 2009 – June 30, 2009
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Gross Alpha, Excl. Radon and U
October 1, 2008 – December 31, 2008
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
July 2, 2012 – October 11, 2011	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
June 27, 2012 – October 11, 2011	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
April 28, 2012 – October 11, 2011	Public Notification Violation for NPDWR Violation	Public Notice	—	Resolved
October 1, 2011 – December 31, 2011	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
July 1, 2011 – September 30, 2011	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
January 1, 2011 – March 31, 2011	Maximum Contaminant Level Violation, Average	Combined Radium (-226 and -228)	Health-based	Resolved
October 1, 2010 – December 31, 2010	Maximum Contaminant Level Violation, Average	Gross Alpha, Excl. Radon and U	Health-based	Resolved
January 1, 2010 – March 31, 2010	Maximum Contaminant Level Violation, Average	Gross Alpha, Excl. Radon and U	Health-based	Resolved
October 1, 2009 – December 31, 2009	Maximum Contaminant Level Violation, Average	Gross Alpha, Excl. Radon and U	Health-based	Resolved
October 1, 2009 – October 31, 2009	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
July 1, 2009 – September 30, 2009	Maximum Contaminant Level Violation, Average	Gross Alpha, Excl. Radon and U	Health-based	Resolved
April 1, 2009 – June 30, 2009	Maximum Contaminant Level Violation, Average	Gross Alpha, Excl. Radon and U	Health-based	Resolved
October 1, 2008 – December 31, 2008	Maximum Contaminant Level Violation, Average	Gross Alpha, Excl. Radon and U	Health-based	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

December 14, 2012State Violation/Reminder Notice7 linked violations
October 26, 2012State Compliance achieved4 linked violations
October 11, 2011State Compliance achieved4 linked violations
January 3, 2011State Public Notification received2 linked violations
January 3, 2011State Public Notification received2 linked violations
June 17, 2010State Public Notification requested2 linked violations
March 10, 2010State Public Notification requested3 linked violations

Common questions

Is HARRIS COUNTY MUD 105 required to publish a Consumer Confidence Report?: Yes. HARRIS COUNTY MUD 105 is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is HARRIS COUNTY MUD 105’s next Consumer Confidence Report due?: HARRIS COUNTY MUD 105’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does HARRIS COUNTY MUD 105 have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for HARRIS COUNTY MUD 105.
What is a Consumer Confidence Report?: A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

BRANDENBURG, PAMELA

713-652-6500

HOUSTON, TX 77019-2191