Public water system · TX2490036
ActiveOld Chisolm Estates
At a glance
Old Chisolm Estates (PWSID TX2490036) is an active community water system in Wise County, Texas. It reports serving 546 people through 182 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 May 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
546
Service connections
182
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Old Chisolm Estates compare with other water systems in Wise County?
By EPA's size categories, Old Chisolm Estates is a small system (501 to 3,300 people). Wise County has 60 active public water systems. Its population served is about 26% below the county average of 734 people per system, and accounts for 1.2% of the 44,014 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 Old Chisolm Estates 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 Old Chisolm Estates?
EPA lists Old Chisolm Estates 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. 43 of the 60 active systems in Wise County (72%) are also privately owned.
Does Old Chisolm Estates have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in May 2026. The violations listed here began between January 2022 and May 2026. By type: 10 monitoring and reporting, 1 public notice, recordkeeping or other and 1 monitoring. The contaminants or rules involved are Public Notice, Revised Total Coliform Rule, Chlorine and Barium. EPA lists 9 as archived, 2 as resolved and 1 as unaddressed. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2026-05-03 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2025-03-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2022-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Bariumcode 1010 | No | Archived |
| 2022-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Berylliumcode 1075 | No | Archived |
| 2022-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chromiumcode 1020 | No | Archived |
| 2022-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cyanidecode 1024 | No | Archived |
| 2022-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Seleniumcode 1045 | No | Archived |
| 2022-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Archived |
| 2022-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Thalliumcode 1085 | No | Archived |
| 2022-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cadmiumcode 1015 | No | Archived |
| 2022-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Mercurycode 1035 | No | Archived |
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.
Old Chisolm Estates: frequently asked questions
Who runs Old Chisolm Estates?
Old Chisolm Estates (PWSID TX2490036) is a community water system privately owned. It is regulated by the TX state drinking water program.
How many people does Old Chisolm Estates serve?
Old Chisolm Estates reports serving 546 people through 182 service connections in Wise County, Texas.
Where does Old Chisolm Estates 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 Old Chisolm Estates 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 May 2026. 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 Old Chisolm Estates' 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 May 2026. For current results, consult the system's annual water quality report, EPA ECHO, or the TX state drinking water program.
Where can I find Old Chisolm Estates' water quality report?
As a community water system, Old Chisolm Estates 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 Wise County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Decatur Water Plant | Wise | 6,910 | Community | Surface water |
| City of Bridgeport | Wise | 5,930 | Community | Surface water |
| West Wise Sud | Wise | 3,909 | Community | Surface water |
| City of Runaway Bay | Wise | 2,458 | Community | Surface water |
| Chisholm Springs | Wise | 2,049 | Community | Groundwater |
| City of Boyd | Wise | 2,044 | 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, “Old Chisolm Estates, PWSID TX2490036, Texas”, https://aquacensus.com/water-systems/texas/old-chisolm-estates-tx2490036 (data as of October 1, 2026).