Public water system · TX0200531

Active

Dow Texas Freeport Salt Dome 4

At a glance

Dow Texas Freeport Salt Dome 4 (PWSID TX0200531) is an active non-transient non-community water system in Brazoria County, Texas. It reports serving 55 people through 2 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 5 violations for this system; 3 are health-based, and the most recent began in December 2014.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

Service connections

Primary source

Groundwater

System type

NTNCWS

Non-transient non-community water system

System record

PWSIDTX0200531

System typeNon-transient non-community water system

Activity statusActive

Population served55

Service connections2

Primary water sourceGroundwater

Owner typePrivate

Primacy agencyTX state drinking water program

City served—

StateTexas

ZIP—

CountyBrazoria County

How does Dow Texas Freeport Salt Dome 4 compare with other water systems in Brazoria County?

By EPA's size categories, Dow Texas Freeport Salt Dome 4 is a very small system (500 people or fewer). Brazoria County has 309 active public water systems. Its population served is well below the county average of 1,277 people per system, and accounts for less than 0.1% of the 394,490 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 Dow Texas Freeport Salt Dome 4 is well 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. 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 Dow Texas Freeport Salt Dome 4?

EPA lists Dow Texas Freeport Salt Dome 4 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. 250 of the 309 active systems in Brazoria County (81%) are also privately owned.

Does Dow Texas Freeport Salt Dome 4 have drinking water violations?

EPA's records list 5 violations for this system; 3 are health-based, and the most recent began in December 2014. The violations listed here began between January 2013 and December 2014. By type: 3 contaminant level above the legal limit, 1 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (3 of them). EPA lists 5 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
2014-12-30	Monitoring and reportingLead Consumer Notice · code 66	Lead and Copper Rulecode 5000	No	Resolved
2013-08-06	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2013-07-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Total trihalomethanes (TTHM)code 2950	Yes	Resolved
2013-04-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Total trihalomethanes (TTHM)code 2950	Yes	Resolved
2013-01-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Total trihalomethanes (TTHM)code 2950	Yes	Resolved

All 5 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.

Dow Texas Freeport Salt Dome 4: frequently asked questions

Who runs Dow Texas Freeport Salt Dome 4?

Dow Texas Freeport Salt Dome 4 (PWSID TX0200531) is a non-transient non-community water system privately owned. It is regulated by the TX state drinking water program.

How many people does Dow Texas Freeport Salt Dome 4 serve?

Dow Texas Freeport Salt Dome 4 reports serving 55 people through 2 service connections in Brazoria County, Texas.

Where does Dow Texas Freeport Salt Dome 4 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 Dow Texas Freeport Salt Dome 4 have any drinking water violations?

EPA's records list 5 violations for this system; 3 are health-based, and the most recent began in December 2014. 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 Dow Texas Freeport Salt Dome 4'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. EPA's records list 5 violations for this system; 3 are health-based, and the most recent began in December 2014. For current results, consult EPA ECHO, or the TX state drinking water program.

Where can I find Dow Texas Freeport Salt Dome 4's water quality report?

The annual Consumer Confidence Report requirement applies to community water systems. Dow Texas Freeport Salt Dome 4 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 Brazoria County

Water system	County	Population served	Type	Source
City of Pearland	Brazoria	125,828	Community	Surface water
City of Lake Jackson	Brazoria	27,314	Community	Purchased surface water
City of Alvin	Brazoria	26,244	Community	Groundwater
City of Angleton	Brazoria	19,429	Community	Purchased surface water
City of Clute	Brazoria	10,604	Community	Purchased surface water
City of Freeport	Brazoria	10,594	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, “Dow Texas Freeport Salt Dome 4, PWSID TX0200531, Texas”, https://aquacensus.com/water-systems/texas/dow-texas-freeport-salt-dome-4-tx0200531 (data as of October 1, 2026).