Is EL OSO WSC required to publish a Consumer Confidence Report?

Yes. EL OSO WSC 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 EL OSO WSC’s next Consumer Confidence Report due?

EL OSO WSC’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.

KARNES CITY, TX · Karnes County

EL OSO WSC Water System

Consumer Confidence Report status

EL OSO WSC 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 EL OSO WSC.

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): TX1280007
System type: Community Water System
Population served: 6,288
Service connections: 2,096
Ownership: local government
Water source: groundwater (wells)

EL OSO WSC is one of 817 community water systems in Texas in the 3,301 to 10,000 people size category, serving 6,288 people from groundwater.

As of August 1, 2026, its federal record holds 2 entries in 2008, all of which EPA lists as closed. Nothing has been added since 2008.

None of the 2 are monitoring or reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset; these involve water-quality, treatment, or public-notice findings instead. The record involves inorganic chemicals.

Violation history

Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2008 – December 31, 2008
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2008 – September 30, 2008
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
October 1, 2008 – December 31, 2008	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved
July 1, 2008 – September 30, 2008	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

March 5, 2018State Public Notification received162 linked violations
July 8, 2010State Compliance achieved5 linked violations
May 20, 2009State Public Notification received2 linked violations
April 17, 2009State Violation/Reminder Notice1 linked violation
February 19, 2009State Public Notification received1 linked violation
December 9, 2008State Public Notification received1 linked violation
October 27, 2008State Public Notification requested1 linked violation
October 27, 2008State Formal Notice of Violation issued1 linked violation
October 1, 1981State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
July 1, 1981State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
April 1, 1981State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
March 1, 1981State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
November 1, 1980State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
September 1, 1980Federal issued Formal Notice of Violation1 linked violation
February 1, 1980Federal issued Formal Notice of Violationgeneral compliance action — not tied to a specific violation on record

Common questions

Is EL OSO WSC required to publish a Consumer Confidence Report?: Yes. EL OSO WSC 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 EL OSO WSC’s next Consumer Confidence Report due?: EL OSO WSC’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does EL OSO WSC have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for EL OSO WSC.
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

JENDRUSCH, GERALD

830-583-3543

KARNES CITY, TX 78118-0309