Public water system · TX0220004
ActiveTerlingua Ranch Development
At a glance
Terlingua Ranch Development (PWSID TX0220004) is an active transient non-community water system in Brewster County, Texas. It reports serving 25 people through 64 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in December 2019.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
25
Service connections
64
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Terlingua Ranch Development compare with other water systems in Brewster County?
By EPA's size categories, Terlingua Ranch Development is a very small system (500 people or fewer). Brewster County has 14 active public water systems. Its population served is well below the county average of 645 people per system, and accounts for 0.3% of the 9,031 people reported by systems filed under the county. Across Texas, the 7,078 active systems average 4,789 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Terlingua Ranch Development is well below that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Texas has 1,622 active transient non-community water systems, 23% of the state's 7,078 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 5,215 Texas systems (74%) list groundwater as their primary source.
Who owns and regulates Terlingua Ranch Development?
EPA lists Terlingua Ranch Development as privately owned. The TX state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 6 of the 14 active systems in Brewster County (43%) are also privately owned.
Does Terlingua Ranch Development have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in December 2019. The violations listed here began between October 2010 and December 2019. By type: 5 public notice, recordkeeping or other, 5 monitoring and reporting and 2 monitoring. The contaminant or rule involved most often is Public Notice (5 of them). EPA lists 12 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2019-12-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2018-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-08-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2016-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2013-01-10 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2012-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2012-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2012-03-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2011-04-27 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2011-02-10 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2010-11-08 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2010-10-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Terlingua Ranch Development: frequently asked questions
Who runs Terlingua Ranch Development?
Terlingua Ranch Development (PWSID TX0220004) is a transient non-community water system privately owned. It is regulated by the TX state drinking water program.
How many people does Terlingua Ranch Development serve?
Terlingua Ranch Development reports serving 25 people through 64 service connections in Brewster County, Texas.
Where does Terlingua Ranch Development get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Terlingua Ranch Development have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in December 2019. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Terlingua Ranch Development's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in December 2019. For current results, consult EPA ECHO, or the TX state drinking water program.
Where can I find Terlingua Ranch Development's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Terlingua Ranch Development is a transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Brewster County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Alpine | Brewster | 6,000 | Community | Groundwater |
| Lajitas on the Rio Grande | Brewster | 942 | Community | Groundwater |
| Study Butte Terlingua Water System | Brewster | 888 | Community | Groundwater |
| Marathon Water Supply & Sewer Service | Brewster | 430 | Community | Groundwater |
| Panther Junction Plt | Brewster | 300 | Community | Groundwater |
| Longhorn Ranch Motel | Brewster | 100 | Transient non-community | Groundwater |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Terlingua Ranch Development, PWSID TX0220004, Texas”, https://aquacensus.com/water-systems/texas/terlingua-ranch-development-tx0220004 (data as of October 1, 2026).