Public water system profile

NORWALK FIRST TAXING DISTRICT

Explore available public water records for NORWALK FIRST TAXING DISTRICT (PWSID CT1030011). Find annual reports, results listed in those reports, official sources, and clear notes about what the records can and cannot show. This page does not show conditions at a specific tap.

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System Snapshot

Available system-level context

This snapshot shows the identity and context fields currently available for NORWALK FIRST TAXING DISTRICT (PWSID CT1030011). Read it with the source links and limitations below.

Last updated: Data reviewed:

System identity

PWSID
CT1030011
State
Connecticut
Linked communities
Norwalk
County context
Not listed in current record
System type
Community water system
Source water
Primarily surface water, supplemented by well-field groundwater
Population served context
40,256
Service connections
11,042
Latest reviewed report
2025 report link found
Data updated
2026-07-13

Connecticut DPH's reviewed schedule lists 40,256 people and 11,042 combined service connections for PWSID CT1030011. It also lists New Canaan, Norwalk, Westport, and Wilton among the towns served; those rows do not prove service for a particular address or align the service area with city boundaries.

Read these as system-level fields from reviewed public records. Confirm provider and address-specific questions with official utility, city, state, or EPA sources.

Report-Listed Rows

Report-listed rows summarized from the latest reviewed report

2 report-listed rows are summarized for NORWALK FIRST TAXING DISTRICT. A listed row is not the same thing as a current advisory or household tap result.

Report year
2025
Rows summarized
2
Source tables represented
1
Scope
Past reporting period
Report-row preview from the latest reviewed report for NORWALK FIRST TAXING DISTRICT
Substance and testing periodReported valueRange in reportLimit or standardSource tableReport-printed status
NitrateTesting period: 2025Surface average 0.2; well average 0.94 ppmAverageSurface water: NA; well water: NAMCL: 10; MCLG: 10Inorganic CompoundsPage 4Typical source, as printed: Fertilizer runoff; leaching from septic tanks and sewage; erosion of natural depositsIn Compliance: YES, as printed for this sample period
ChlorineTesting period: 2025Surface average 1.19; well average 0.96; distribution average 0.67 ppmAverageSurface water: 0.86 - 1.47; well water: 0.42 - 1.30; distribution system: 0.1 - 1.6MRDL: 4; MRDLG: 4Inorganic CompoundsPage 4Typical source, as printed: Water additive used to control microbesIn Compliance: YES, as printed for this sample period

Report row

Nitrate

Range in report
Surface water: NA; well water: NA
Average
Surface average 0.2; well average 0.94 ppm
Testing period
2025
Sites above action level
Not applicable to this summarized entry
Limit or standard
MCL: 10; MCLG: 10
Report-printed status
In Compliance: YES, as printed for this sample period

Source · Page 4

Inorganic Compounds

Typical source, as printed: Fertilizer runoff; leaching from septic tanks and sewage; erosion of natural deposits

Report row

Chlorine

Range in report
Surface water: 0.86 - 1.47; well water: 0.42 - 1.30; distribution system: 0.1 - 1.6 ppm
Average
Surface average 1.19; well average 0.96; distribution average 0.67 ppm
Testing period
2025
Sites above action level
Not applicable to this summarized entry
Limit or standard
MRDL: 4; MRDLG: 4
Report-printed status
In Compliance: YES, as printed for this sample period

Source · Page 4

Inorganic Compounds

Typical source, as printed: Water additive used to control microbes

Source report notes

Source: First District Water Department 2025 Water Quality Report. Retrieved 2026-07-13.

  • Applies to: Nitrate

    The source table prints NA in range columns for this row. In Compliance: YES is limited to this 2025 row sample period and is not presented as a current status or safety conclusion.

  • Applies to: Chlorine

    MRDL/MRDLG fields are preserved rather than mapping this disinfectant row to MCL/MCLG. In Compliance: YES is limited to this 2025 row sample period and is not presented as a current status or safety conclusion.

Review the linked source report for definitions, footnotes, and official wording.

Violation Records

Violation records shown on this page

This section shows 0 system-scoped violation detail records currently included for NORWALK FIRST TAXING DISTRICT. Annual reports and current notices can use different timing and terminology.

No system-scoped violation detail records are included in the available reviewed records for this system. This is not an official compliance finding. Check the official utility, state, or EPA source for current compliance and notice information.

Important limitation

Profile summary note

This page summarizes public records reviewed by this site. It does not replace official notices, utility updates, or state drinking water information.

System profile limitations

  • The bounded preview shows only Nitrate and Chlorine from the 2025 report. Both rows print In Compliance: YES for the report period; that wording is not a current compliance, advisory, or tap-level conclusion.
  • Nine of twenty-eight material row-like entries are modeled. The report's other regulated, operational, action-level, unregulated, and PFAS context is not reproduced in this bounded preview.
  • The official 2025 source is the provider's HTML report and its embedded table assets. The archive item labeled as a 2025 PDF is a 2024 document and is not used as 2025 evidence.
  • The report says 51 homes were sampled for Lead and Copper and that no samples exceeded the action level, while the printed Lead range reaches 80 ppb against a 15 ppb action level. This site preserves that unresolved source tension without reconciling it; the sampled-home results do not determine conditions at a particular tap.
  • PFAS results and limitations remain in the linked official report and PFAS information page; this preview does not convert unregulated-monitoring context into a health or compliance conclusion.
  • Connecticut DPH lists New Canaan, Norwalk, Westport, and Wilton among the towns served. The Norwalk relationship supports navigation only and does not prove the provider for every address.
  • Address-level service can vary. Confirm the serving provider with a bill, account portal, utility, city, or state source.
  • This page shows summarized entries from the available report. It does not include a complete contaminant or violation table.
  • Missing fields are not findings. They mean the field is not shown on this page from the records currently available.
  • This page summarizes available public records. It may not include every update, notice, or urgent official advisory.

Latest Reviewed Report

Latest reviewed report found by this site

The 2025 report found for NORWALK FIRST TAXING DISTRICT summarizes a past reporting period. It is not a live alert page.

Utility reportReport data updated:

2025 Water Quality Report

Open 2025 water quality report

The 2025 report link is available for NORWALK FIRST TAXING DISTRICT. Use the linked source report for the full table, definitions, footnotes, and official context. This page includes summarized entries from the available report. They are not a complete copy of the report table.

Report year
2025
Summarized entries shown
2
Source name
First District Water Department 2025 Water Quality Report
Source URL
Open report source
Source retrieved
2026-07-13
Last reviewed
2026-07-13

Use the linked source report for the full table, definitions, footnotes, and official context.

Data coverage

This page summarizes selected public records for this public water system. It may not include every report, update, current notice, or address-level service detail.

Latest reviewed report
2025 report link found
Report-listed rows
2 summarized report entries shown
Detailed violation records
No detailed system-scoped records displayed
Population served
Listed from reviewed source
Service connections
Listed from reviewed source
City context
Norwalk
County context
Not listed in current record

Local Context

City and state context for this system

NORWALK FIRST TAXING DISTRICT is linked here to Norwalk for navigation. That relationship does not confirm the provider for a specific address; use a bill, utility portal, or official lookup source.

Linked local context

Linked communities
Norwalk
County context
Not listed in current record
State context
Connecticut

Related Explainers

Related contaminants and guides

Use these explainers with NORWALK FIRST TAXING DISTRICT's report year, source table, and official report. Links are limited to existing guide and contaminant pages.

Metals and inorganic chemicals

Nitrate

Nitrate is a regulated inorganic contaminant. Report labels often specify that the result is measured as nitrogen, and that basis must remain attached to the value and unit.

Read the Nitrate contaminant guide

Disinfectants

Chlorine

Chlorine is a drinking-water disinfectant used to control microbes. It is not the same topic as the disinfection byproducts HAA5 or TTHM.

Read the Chlorine contaminant guide

How to look up your drinking water system

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How to read a water quality report

A plain-English walkthrough of Consumer Confidence Reports, including report years, detected contaminants, legal limits, violations, and source notes.

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Corrections

Suggest a correction or newer source

If you have a newer official report, utility source, or correction, send the source link for review. This helps keep profile summaries tied to public records.

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Evidence

Official sources and report links

Use official federal, state, utility, or report sources before treating a page as final.

Data methodology

Review source hierarchy, missing-data handling, and record limitations.

View Data methodology

Data limitations

See why limited records, missing fields, and current notices need careful interpretation.

View Data limitations