Public water system · TX1780061
ActiveEquistar Chemicals
At a glance
Equistar Chemicals (PWSID TX1780061) is an active non-transient non-community water system in Nueces County, Texas. It reports serving 350 people through 20 service connections. Its primary water source is purchased surface water, 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 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
350
Service connections
20
Primary source
SWP
Purchased surface water
System type
NTNCWS
Non-transient non-community water system
System record
How does Equistar Chemicals compare with other water systems in Nueces County?
By EPA's size categories, Equistar Chemicals is a very small system (500 people or fewer). Nueces County has 20 active public water systems. Its population served is well below the county average of 18,565 people per system, and accounts for less than 0.1% of the 371,295 people reported by systems filed under the county. Across Texas, the 7,078 active systems average 4,789 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Equistar Chemicals is about 19% below that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Texas has 862 active non-transient non-community water systems, 12% of the state's 7,078 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 1,192 Texas systems (17%) list purchased surface water as their primary source.
Who owns and regulates Equistar Chemicals?
EPA lists Equistar Chemicals 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. 9 of the 20 active systems in Nueces County (45%) are also privately owned.
Does Equistar Chemicals 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 2025. The violations listed here began between December 2012 and December 2025. By type: 7 monitoring and reporting, 4 monitoring and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Revised Total Coliform Rule (4 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 |
|---|---|---|---|---|
| 2025-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2024-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-03-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-02-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2013-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2013-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2013-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2013-02-10 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2012-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | 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.
Equistar Chemicals: frequently asked questions
Who runs Equistar Chemicals?
Equistar Chemicals (PWSID TX1780061) is a non-transient non-community water system privately owned. It is regulated by the TX state drinking water program.
How many people does Equistar Chemicals serve?
Equistar Chemicals reports serving 350 people through 20 service connections in Nueces County, Texas.
Where does Equistar Chemicals get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Equistar Chemicals 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 2025. 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 Equistar Chemicals' 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 2025. For current results, consult EPA ECHO, or the TX state drinking water program.
Where can I find Equistar Chemicals' water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Equistar Chemicals is a non-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 Nueces County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Corpus Christi | Nueces | 318,387 | Community | Surface water |
| Nueces County Wcid 4 | Nueces | 14,880 | Community | Purchased surface water |
| Nueces County Wcid 3 | Nueces | 14,000 | Community | Surface water |
| Corpus Christi Naval Air Station | Nueces | 7,048 | Community | Purchased surface water |
| City of Bishop | Nueces | 3,186 | Community | Purchased surface water |
| Nueces WSC | Nueces | 3,165 | Community | Purchased surface water |
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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, “Equistar Chemicals, PWSID TX1780061, Texas”, https://aquacensus.com/water-systems/texas/equistar-chemicals-tx1780061 (data as of October 1, 2026).