States ›Connecticut ›Windham County ›Brooklyn

Brooklyn, CT Tap Water Quality 2026

Water quality report for Brooklyn, CT — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Brooklyn's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Ctwc - Crystal System PWSID: CT0690011 Updated: 2026 Q2
⚠️

PFAS above the federal limit at 2 of 2 sampling points

Lead is 0.50 ppb, 3% of the action level and no violations are open. However, PFAS exceeds the federal limit at 2 of 2 sampling points, running as high as 2.36 times the limit.

D

Brooklyn earns a D for water quality

Graded on violations, lead, and PFAS, with state inspection findings.

Lead: 0.50 ppb — 3% of the federal action level
PFAS above the federal limit at 2 of 2 sampling points
9 violations since 2015, 0 health-based
No violations currently open
Brooklyn's lead level vs. all Connecticut community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 0.50 ppb — 3% of the federal action level
✓ Lower lead than 94% of Connecticut utilities
Population Served
3499
~2909 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
9 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
3% of EPA action level
0.50 ppb
Action level: 15 ppb
Copper (Cu)
90th percentile of tap samples. SDWIS reports a copper figure only when a system exceeds the action level, so any value here is an exceedance.
138.5% of EPA action level
1,800 ppb
Action level: 1,300 ppb
The 90th-percentile lead result is 0.50 ppb, 3% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home. Copper reached the action level here; a copper figure appears in SDWIS only when a system triggers it.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Public Notice OTHER — — 2018 Resolved
Public Notice OTHER — — 2018 Resolved
Public Notice OTHER — — 2018 Resolved
Public Notice OTHER — — 2018 Resolved
ManMade Beta Particle and Photon Emitter MONITORING AND REPORTING — — 2015 Resolved
Gross Beta Particle Activity MONITORING AND REPORTING — 4 mrem/yr 2015 Resolved
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2015 Resolved
Combined Uranium MONITORING AND REPORTING — 30 ug/L 2015 Resolved
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2015 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

9 violations are on record since 2015, of which 0 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Ctwc - Crystal System
PWSID CT0690011
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 3,499
Service connections 2,909
Systems serving this area 4
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Brooklyn tap water safe to drink? ▼
It meets most federal standards, but PFAS exceeds the federal limit at 2 of 2 sampling points. No violations are currently open. Lead is 0.50 ppb, 3% of the action level.
Does Brooklyn water have PFAS? ▼
Yes. PFAS exceeds the federal limit at 2 of 2 sampling points, running as high as 2.36 times the limit. Limits are enforced on a running annual average at each sampling point, not on a single sample.
Who supplies water to Brooklyn? ▼
Ctwc - Crystal System (PWSID CT0690011), one of 4 systems serving this area. Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2025-05-30. No significant deficiencies were recorded.

What Should Brooklyn Residents Do?

1
Consider a reverse-osmosis filter
Reverse osmosis removes more than 95% of PFAS. Standard carbon pitchers do not.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

Nearby Cities in Connecticut

Windham, Ct Tap Water Quality 2026 Windham Killingly, Ct Tap Water Quality 2026 Windham Putnam, Ct Tap Water Quality 2026 Windham Plainfield, Ct Tap Water Quality 2026 Windham Thompson, Ct Tap Water Quality 2026 Windham Wauregan, Ct Tap Water Quality 2026 Windham