Public water system · TX0430008

Active

City of Princeton

At a glance

City of Princeton (PWSID TX0430008) is an active community water system in Collin County, Texas. It reports serving 37,019 people through 15,569 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, 2 are health-based, and the most recent began in July 2025.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

37,019

Service connections

15,569

Primary source

SWP

Purchased surface water

System type

CWS

Community water system

System record

PWSIDTX0430008

System typeCommunity water system

Activity statusActive

Population served37,019

Service connections15,569

Primary water sourcePurchased surface water

Owner typeLocal government

Primacy agencyTX state drinking water program

City served—

StateTexas

ZIP—

CountyCollin County

How does City of Princeton compare with other water systems in Collin County?

By EPA's size categories, City of Princeton is a large system (10,001 to 100,000 people). Collin County has 35 active public water systems. Its population served is roughly in line with the county average of 36,284 people per system, and accounts for 2.9% 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 Princeton is about 5.5 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 Princeton?

EPA lists City of Princeton 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 Princeton have drinking water violations?

Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in July 2025. The violations listed here began between July 2010 and July 2025. By type: 5 public notice, recordkeeping or other, 4 monitoring and reporting, 2 contaminant level above the legal limit and 1 reporting. The contaminant or rule involved most often is Lead and Copper Rule (3 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
2025-07-02	ReportingNotification, Known or Potential LSL · code 4H	Lead and Copper Rule Revisionscode 5200	No	Resolved
2023-10-01	Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52	Lead and Copper Rulecode 5000	No	Resolved
2017-02-03	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2016-12-30	Monitoring and reportingLead Consumer Notice · code 66	Lead and Copper Rulecode 5000	No	Resolved
2016-10-01	Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52	Lead and Copper Rulecode 5000	No	Resolved
2012-07-01	Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72	Consumer Confidence Rulecode 7000	No	Resolved
2010-12-11	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2010-10-18	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2010-09-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2010-08-01	Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25	Total coliform bacteria (TCR)code 3100	No	Resolved
2010-08-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2010-07-01	Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72	Consumer Confidence Rulecode 7000	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.

City of Princeton: frequently asked questions

Who runs City of Princeton?

City of Princeton (PWSID TX0430008) 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 Princeton serve?

City of Princeton reports serving 37,019 people through 15,569 service connections in Collin County, Texas.

Where does City of Princeton 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 Princeton 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 July 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 City of Princeton'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 July 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 City of Princeton's water quality report?

As a community water system, City of Princeton 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 Mckinney	Collin	224,043	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

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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 Princeton, PWSID TX0430008, Texas”, https://aquacensus.com/water-systems/texas/city-of-princeton-tx0430008 (data as of October 1, 2026).