Public water system · TX0610220
ActiveStony Hills Water System
At a glance
Stony Hills Water System (PWSID TX0610220) is an active community water system in Denton County, Texas. It reports serving 723 people through 241 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 8 violations for this system; none is health-based, and the most recent began in February 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
723
Service connections
241
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Stony Hills Water System compare with other water systems in Denton County?
By EPA's size categories, Stony Hills Water System is a small system (501 to 3,300 people). Denton County has 88 active public water systems. Its population served is well below the county average of 9,202 people per system, and accounts for less than 0.1% of the 809,752 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 Stony Hills Water System 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 Stony Hills Water System?
EPA lists Stony Hills Water System 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. 44 of the 88 active systems in Denton County (50%) are also privately owned.
Does Stony Hills Water System have drinking water violations?
EPA's records list 8 violations for this system; none is health-based, and the most recent began in February 2026. The violations listed here began between December 2019 and February 2026. By type: 3 public notice, recordkeeping or other, 3 monitoring and 2 monitoring and reporting. The contaminant or rule involved most often is Public Notice (3 of them). EPA lists 6 as resolved, 1 as unaddressed and 1 as archived. 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. 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 |
|---|---|---|---|---|
| 2026-02-06 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2025-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Archived |
| 2024-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-03-05 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2023-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2021-07-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2021-01-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2019-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
All 8 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.
Stony Hills Water System: frequently asked questions
Who runs Stony Hills Water System?
Stony Hills Water System (PWSID TX0610220) is a community water system privately owned. It is regulated by the TX state drinking water program.
How many people does Stony Hills Water System serve?
Stony Hills Water System reports serving 723 people through 241 service connections in Denton County, Texas.
Where does Stony Hills Water System 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 Stony Hills Water System have any drinking water violations?
EPA's records list 8 violations for this system; none is health-based, and the most recent began in February 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 Stony Hills Water System'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 8 violations for this system; none is health-based, and the most recent began in February 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 Stony Hills Water System's water quality report?
As a community water system, Stony Hills Water System 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 Denton County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Denton | Denton | 150,037 | Community | Surface water |
| City of Lewisville | Denton | 140,880 | Community | Surface water |
| Mustang Sud | Denton | 110,826 | Community | Purchased surface water |
| Town of Flower Mound | Denton | 80,000 | Community | Purchased surface water |
| City of the Colony | Denton | 45,367 | Community | Purchased surface water |
| Town of Little Elm | Denton | 41,000 | 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, “Stony Hills Water System, PWSID TX0610220, Texas”, https://aquacensus.com/water-systems/texas/stony-hills-water-system-tx0610220 (data as of October 1, 2026).