Public water system · TX0910137
ActiveNorthwest Grayson County Wcid 1
At a glance
Northwest Grayson County Wcid 1 (PWSID TX0910137) is an active community water system in Grayson County, Texas. It reports serving 3,615 people through 1,205 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, 2 are health-based, and the most recent began in April 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,615
Service connections
1,205
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Northwest Grayson County Wcid 1 compare with other water systems in Grayson County?
By EPA's size categories, Northwest Grayson County Wcid 1 is a medium system (3,301 to 10,000 people). Grayson County has 50 active public water systems. Its population served is about 13% above the county average of 3,197 people per system, and accounts for 2.3% 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 Northwest Grayson County Wcid 1 is about half of 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 Northwest Grayson County Wcid 1?
EPA lists Northwest Grayson County Wcid 1 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 Northwest Grayson County Wcid 1 have drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in April 2026. The violations listed here began between October 2015 and April 2026. By type: 6 monitoring and reporting, 3 public notice, recordkeeping or other, 2 required treatment not met and 1 reporting. The contaminant or rule involved most often is Lead and Copper Rule (4 of them). EPA lists 6 as unaddressed, 5 as resolved and 1 as archived. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement. 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. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2026-04-02 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2025-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Unaddressed |
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Unaddressed |
| 2025-05-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2024-10-17 | ReportingLSL Reporting · code 4G | Lead and Copper Rule Revisionscode 5200 | No | Unaddressed |
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Unaddressed |
| 2024-09-21 | Required treatment not metTreatment Technique, Level 1 Assessment (RTCR) · code 2A | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2021-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cyanidecode 1024 | No | Archived |
| 2019-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2017-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2016-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2015-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | 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.
Northwest Grayson County Wcid 1: frequently asked questions
Who runs Northwest Grayson County Wcid 1?
Northwest Grayson County Wcid 1 (PWSID TX0910137) is a community water system owned by a local government. It is regulated by the TX state drinking water program.
How many people does Northwest Grayson County Wcid 1 serve?
Northwest Grayson County Wcid 1 reports serving 3,615 people through 1,205 service connections in Grayson County, Texas.
Where does Northwest Grayson County Wcid 1 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 Northwest Grayson County Wcid 1 have any drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in April 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 Northwest Grayson County Wcid 1'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, 2 are health-based, and the most recent began in April 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 Northwest Grayson County Wcid 1's water quality report?
As a community water system, Northwest Grayson County Wcid 1 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 |
| South Grayson Sud | Grayson | 6,750 | Community | Groundwater |
| City of Howe | Grayson | 4,548 | 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, “Northwest Grayson County Wcid 1, PWSID TX0910137, Texas”, https://aquacensus.com/water-systems/texas/northwest-grayson-county-wcid-1-tx0910137 (data as of October 1, 2026).