Public water system · TX0570059
ActiveTown of Sunnyvale
At a glance
Town of Sunnyvale (PWSID TX0570059) is an active community water system in Dallas County, Texas. It reports serving 8,839 people through 3,348 service connections. Its primary water source is purchased surface water, 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 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
8,839
Service connections
3,348
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Town of Sunnyvale compare with other water systems in Dallas County?
By EPA's size categories, Town of Sunnyvale is a medium system (3,301 to 10,000 people). Dallas County has 35 active public water systems. Its population served is well below the county average of 90,969 people per system, and accounts for 0.3% of the 3,183,922 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 Town of Sunnyvale is about 32% above 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 1,192 Texas systems (17%) list purchased surface water as their primary source.
Who owns and regulates Town of Sunnyvale?
EPA lists Town of Sunnyvale 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. 31 of the 35 active systems in Dallas County (89%) are also owned by a local government.
Does Town of Sunnyvale 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 2023. The violations listed here began between July 2006 and July 2023. By type: 10 monitoring and reporting and 2 public notice, recordkeeping or other. The contaminant or rule involved most often is Chlorine (7 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 |
|---|---|---|---|---|
| 2023-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2021-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2017-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | 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 |
| 2016-02-08 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2015-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2008-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2007-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2007-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2006-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2006-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | 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.
Town of Sunnyvale: frequently asked questions
Who runs Town of Sunnyvale?
Town of Sunnyvale (PWSID TX0570059) is a community water system owned by a local government. It is regulated by the TX state drinking water program.
How many people does Town of Sunnyvale serve?
Town of Sunnyvale reports serving 8,839 people through 3,348 service connections in Dallas County, Texas.
Where does Town of Sunnyvale get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Town of Sunnyvale 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 2023. 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 Town of Sunnyvale'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 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the TX state drinking water program.
Where can I find Town of Sunnyvale's water quality report?
As a community water system, Town of Sunnyvale 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 Dallas County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Dallas Water Utility | Dallas | 1,356,479 | Community | Surface water |
| City of Irving | Dallas | 264,546 | Community | Purchased surface water |
| City of Garland | Dallas | 248,822 | Community | Purchased surface water |
| City of Grand Prairie | Dallas | 201,843 | Community | Purchased surface water |
| Dallas Fort Worth International Airport | Dallas | 177,673 | Non-transient non-community | Purchased surface water |
| City of Mesquite | Dallas | 152,020 | 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, “Town of Sunnyvale, PWSID TX0570059, Texas”, https://aquacensus.com/water-systems/texas/town-of-sunnyvale-tx0570059 (data as of October 1, 2026).