Public water system · TX0910064
ActiveSouth Grayson Sud
At a glance
South Grayson Sud (PWSID TX0910064) is an active community water system in Grayson County, Texas. It reports serving 6,750 people through 2,250 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; none is health-based, and the most recent began in December 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
6,750
Service connections
2,250
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does South Grayson Sud compare with other water systems in Grayson County?
By EPA's size categories, South Grayson Sud is a medium system (3,301 to 10,000 people). Grayson County has 50 active public water systems, and South Grayson Sud is the 5th-largest of them by population served. Its population served is about twice the county average of 3,197 people per system, and accounts for 4.2% of the 159,854 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 South Grayson Sud is roughly in line with 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 South Grayson Sud?
EPA lists South Grayson Sud 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. 29 of the 50 active systems in Grayson County (58%) are also owned by a local government.
Does South Grayson Sud have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in December 2025. The violations listed here began between January 2018 and December 2025. By type: 2 monitoring and reporting, 1 reporting and 1 public notice, recordkeeping or other. The contaminants or rules involved are Lead and Copper Rule, Lead and Copper Rule Revisions, Consumer Confidence Rule and Chlorine. EPA lists 3 as resolved and 1 as unaddressed. 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 |
|---|---|---|---|---|
| 2025-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2025-07-02 | ReportingNotification, Known or Potential LSL · code 4H | Lead and Copper Rule Revisionscode 5200 | No | Unaddressed |
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
All 4 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.
South Grayson Sud: frequently asked questions
Who runs South Grayson Sud?
South Grayson Sud (PWSID TX0910064) is a community water system owned by a local government. It is regulated by the TX state drinking water program.
How many people does South Grayson Sud serve?
South Grayson Sud reports serving 6,750 people through 2,250 service connections in Grayson County, Texas.
Where does South Grayson Sud 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 South Grayson Sud have any drinking water violations?
EPA's records list 4 violations for this system; 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 South Grayson Sud'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 4 violations for this system; none is health-based, and the most recent began in December 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the TX state drinking water program.
Where can I find South Grayson Sud's water quality report?
As a community water system, South Grayson Sud 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 Grayson County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Sherman | Grayson | 43,645 | Community | Surface water |
| City of Denison | Grayson | 27,500 | Community | Surface water |
| City of Van Alstyne | Grayson | 7,000 | Community | Purchased surface water |
| Two Way Sud | Grayson | 6,804 | Community | Groundwater |
| City of Howe | Grayson | 4,548 | Community | Purchased surface water |
| Tanglewood on Texoma | Grayson | 4,341 | 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, “South Grayson Sud, PWSID TX0910064, Texas”, https://aquacensus.com/water-systems/texas/south-grayson-sud-tx0910064 (data as of October 1, 2026).