Public water system · TX0430039
ActiveCity of Mckinney
At a glance
City of Mckinney (PWSID TX0430039) is an active community water system in Collin County, Texas. It reports serving 224,043 people through 77,058 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 3 violations for this system; none is health-based, and the most recent began in January 2021.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
224,043
Service connections
77,058
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does City of Mckinney compare with other water systems in Collin County?
By EPA's size categories, City of Mckinney is a very large system (more than 100,000 people). Collin County has 35 active public water systems, and City of Mckinney is the 3rd-largest of them by population served. Its population served is about 6.2 times the county average of 36,284 people per system, and accounts for 18% of the 1,269,941 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 City of Mckinney is about 33 times 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 City of Mckinney?
EPA lists City of Mckinney 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. 33 of the 35 active systems in Collin County (94%) are also owned by a local government.
Does City of Mckinney have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in January 2021. The violations listed here began between April 2014 and January 2021. By type: 3 monitoring and reporting. The contaminant or rule involved most often is Lead and Copper Rule (2 of them). EPA lists 3 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 |
|---|---|---|---|---|
| 2021-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2020-07-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2014-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
All 3 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.
City of Mckinney: frequently asked questions
Who runs City of Mckinney?
City of Mckinney (PWSID TX0430039) is a community water system owned by a local government. It is regulated by the TX state drinking water program.
How many people does City of Mckinney serve?
City of Mckinney reports serving 224,043 people through 77,058 service connections in Collin County, Texas.
Where does City of Mckinney 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 City of Mckinney have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in January 2021. 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 City of Mckinney'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 3 violations for this system; none is health-based, and the most recent began in January 2021. For current results, consult the system's annual water quality report, EPA ECHO, or the TX state drinking water program.
Where can I find City of Mckinney's water quality report?
As a community water system, City of Mckinney 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 Collin County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| City of Plano | Collin | 292,059 | Community | Purchased surface water |
| City of Frisco | Collin | 231,910 | Community | Purchased surface water |
| City of Allen | Collin | 113,746 | Community | Purchased surface water |
| City of Celina | Collin | 52,701 | Community | Purchased surface water |
| City of Wylie | Collin | 48,393 | Community | Purchased surface water |
| Town of Prosper | Collin | 42,598 | 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, “City of Mckinney, PWSID TX0430039, Texas”, https://aquacensus.com/water-systems/texas/city-of-mckinney-tx0430039 (data as of October 1, 2026).