Public water system · CT1030011
ActiveNorwalk First Taxing District
At a glance
Norwalk First Taxing District (PWSID CT1030011) is an active community water system in Fairfield County, Connecticut. It reports serving 40,256 people through 11,042 service connections. Its primary water source is 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 December 2021.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
40,256
Service connections
11,042
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Norwalk First Taxing District compare with other water systems in Fairfield County?
By EPA's size categories, Norwalk First Taxing District is a large system (10,001 to 100,000 people). Fairfield County has 337 active public water systems, and Norwalk First Taxing District is the 6th-largest of them by population served. Its population served is about 17 times the county average of 2,311 people per system, and accounts for 5.2% of the 778,730 people reported by systems filed under the county. Across Connecticut, the 2,363 active systems average 1,247 people each. Nationally, the average active community water system reports serving 6,703 people, so Norwalk First Taxing District is about 6 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. Connecticut has 481 active community water systems, 20% of the state's 2,363 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 38 Connecticut systems (1.6%) list surface water as their primary source.
Who owns and regulates Norwalk First Taxing District?
EPA lists Norwalk First Taxing District 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. 44 of the 337 active systems in Fairfield County (13%) are also owned by a local government.
Does Norwalk First Taxing District have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in December 2021. The violations listed here began between July 2008 and December 2021. By type: 2 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminants or rules involved are Lead and Copper Rule, E. coli and Consumer Confidence Rule. 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 |
|---|---|---|---|---|
| 2021-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2019-10-01 | Monitoring and reportingFailure to Conduct Assessment Monitoring · code 19 | E. colicode 3014 | No | Resolved |
| 2008-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | 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.
Norwalk First Taxing District: frequently asked questions
Who runs Norwalk First Taxing District?
Norwalk First Taxing District (PWSID CT1030011) is a community water system owned by a local government. It is regulated by the CT state drinking water program.
How many people does Norwalk First Taxing District serve?
Norwalk First Taxing District reports serving 40,256 people through 11,042 service connections in Fairfield County, Connecticut.
Where does Norwalk First Taxing District get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Norwalk First Taxing District have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in December 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 Norwalk First Taxing District'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 December 2021. For current results, consult the system's annual water quality report, EPA ECHO, or the CT state drinking water program.
Where can I find Norwalk First Taxing District's water quality report?
As a community water system, Norwalk First Taxing District 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 Fairfield County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Aquarion-Eastern Fairfield County | Fairfield | 351,756 | Community | Surface water |
| Aquarion-Stamford | Fairfield | 119,214 | Community | Surface water |
| Danbury Water Department | Fairfield | 62,055 | Community | Surface water |
| Aquarion-Greenwich | Fairfield | 53,297 | Community | Surface water |
| South Norwalk Electric & Water | Fairfield | 42,000 | Community | Surface water |
| Aquarion-Darien | Fairfield | 18,737 | 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, “Norwalk First Taxing District, PWSID CT1030011, Connecticut”, https://aquacensus.com/water-systems/connecticut/norwalk-first-taxing-district-ct1030011 (data as of October 1, 2026).