Public water system · CT1660394

Active

Wolcott Public Library

At a glance

Wolcott Public Library (PWSID CT1660394) is an active transient non-community water system in New Haven County, Connecticut. It reports serving 25 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 10 violations for this system; 2 are health-based, and the most recent began in August 2020.

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

Population served

Service connections

Primary source

Groundwater

System type

TNCWS

Transient non-community water system

System record

PWSIDCT1660394

System typeTransient non-community water system

Activity statusActive

Population served25

Service connections1

Primary water sourceGroundwater

Owner typeLocal government

Primacy agencyCT state drinking water program

City servedWolcott

StateConnecticut

ZIP—

CountyNew Haven County

How does Wolcott Public Library compare with other water systems in New Haven County?

By EPA's size categories, Wolcott Public Library is a very small system (500 people or fewer). New Haven County has 212 active public water systems. Its population served is well below the county average of 3,412 people per system, and accounts for less than 0.1% of the 723,334 people reported by systems filed under the county. Across Connecticut, the 2,363 active systems average 1,247 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Wolcott Public Library is well below that figure.

What does “transient non-community water system” mean?

A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Connecticut has 1,399 active transient non-community water systems, 59% of the state's 2,363 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,263 Connecticut systems (96%) list groundwater as their primary source.

Who owns and regulates Wolcott Public Library?

EPA lists Wolcott Public Library as owned by a local government. The CT state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 32 of the 212 active systems in New Haven County (15%) are also owned by a local government.

Does Wolcott Public Library have drinking water violations?

EPA's records list 10 violations for this system; 2 are health-based, and the most recent began in August 2020. The violations listed here began between December 2001 and August 2020. By type: 3 public notice, recordkeeping or other, 2 monitoring, 2 monitoring and reporting, 2 contaminant level above the legal limit and 1 reporting. The contaminant or rule involved most often is Revised Total Coliform Rule (3 of them). EPA lists 9 as resolved and 1 as unaddressed. 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.

Began	Violation	Contaminant or rule	Health-based	Status
2020-08-01	MonitoringMonitoring, Additional Routine (RTCR) · code 3B	Revised Total Coliform Rulecode 8000	No	Resolved
2020-07-20	Monitoring and reportingMonitoring, Source Water (GWR) · code 34	E. colicode 3014	No	Unaddressed
2019-08-17	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2018-12-29	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2018-07-10	ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B	Revised Total Coliform Rulecode 8000	No	Resolved
2017-07-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2007-10-01	Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75	Public Noticecode 7500	No	Resolved
2007-04-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2002-01-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2001-12-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved

All 10 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.

Wolcott Public Library: frequently asked questions

Who runs Wolcott Public Library?

Wolcott Public Library (PWSID CT1660394) is a transient non-community water system owned by a local government. It is regulated by the CT state drinking water program.

How many people does Wolcott Public Library serve?

Wolcott Public Library reports serving 25 people through 1 service connection in New Haven County, Connecticut.

Where does Wolcott Public Library 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 Wolcott Public Library have any drinking water violations?

EPA's records list 10 violations for this system; 2 are health-based, and the most recent began in August 2020. 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 Wolcott Public Library'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 10 violations for this system; 2 are health-based, and the most recent began in August 2020. For current results, consult EPA ECHO, or the CT state drinking water program.

Where can I find Wolcott Public Library's water quality report?

The annual Consumer Confidence Report requirement applies to community water systems. Wolcott Public Library is a transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.

Other water systems in New Haven County

Water system	County	Population served	Type	Source
Regional Water Authority	New Haven	418,900	Community	Surface water
Waterbury Water Department	New Haven	107,271	Community	Surface water
Meriden Water Division	New Haven	58,441	Community	Surface water
Wallingford Water Department	New Haven	37,267	Community	Surface water
Ctwc - Shoreline Region-Guilford System	New Haven	33,975	Community	Surface water
Ctwc - Naugatuck Region-Central System	New Haven	22,735	Community	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, “Wolcott Public Library, PWSID CT1660394, Connecticut”, https://aquacensus.com/water-systems/connecticut/wolcott-public-library-ct1660394 (data as of October 1, 2026).