Public water system · TX2370005
ActivePattison WSC
At a glance
Pattison WSC (PWSID TX2370005) is an active community water system in Waller County, Texas. It reports serving 1,650 people through 550 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,650
Service connections
550
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Pattison WSC compare with other water systems in Waller County?
By EPA's size categories, Pattison WSC is a small system (501 to 3,300 people). Waller County has 67 active public water systems. Its population served is about 79% above the county average of 920 people per system, and accounts for 2.7% of the 61,644 people reported by systems filed under the county. Across Texas, the 7,078 active systems average 4,789 people each. Nationally, the average active community water system reports serving 6,703 people, so Pattison WSC is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Texas has 4,594 active community water systems, 65% 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 Pattison WSC?
EPA lists Pattison WSC as owned by a local government. 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. 26 of the 67 active systems in Waller County (39%) are also owned by a local government.
Does Pattison WSC have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2022. The violations listed here began between July 2011 and July 2022. By type: 10 monitoring and reporting and 2 public notice, recordkeeping or other. The contaminant or rule involved most often is Lead and Copper Rule (6 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 |
|---|---|---|---|---|
| 2022-07-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2022-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2022-01-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2022-01-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2021-07-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2021-02-25 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2019-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2015-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2014-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2014-04-01 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2011-11-10 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2011-07-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | 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.
Pattison WSC: frequently asked questions
Who runs Pattison WSC?
Pattison WSC (PWSID TX2370005) is a community water system owned by a local government. It is regulated by the TX state drinking water program.
How many people does Pattison WSC serve?
Pattison WSC reports serving 1,650 people through 550 service connections in Waller County, Texas.
Where does Pattison WSC 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 Pattison WSC 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 July 2022. 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 Pattison WSC'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 July 2022. For current results, consult the system's annual water quality report, EPA ECHO, or the TX state drinking water program.
Where can I find Pattison WSC's water quality report?
As a community water system, Pattison WSC must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Waller County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Prairie View A&M University | Waller | 9,550 | Community | Groundwater |
| City of Hempstead | Waller | 7,158 | Community | Groundwater |
| City of Waller | Waller | 5,448 | Community | Groundwater |
| Brookshire Mwd | Waller | 5,364 | Community | Groundwater |
| Harris-Waller Counties MUD 5 | Waller | 4,098 | Community | Purchased groundwater |
| Willow Creek Farms MUD | Waller | 3,453 | 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, “Pattison WSC, PWSID TX2370005, Texas”, https://aquacensus.com/water-systems/texas/pattison-wsc-tx2370005 (data as of October 1, 2026).