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Southbury, CT Tap Water Quality 2026

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

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

Main Utility: Heritage Water Company PWSID: CT1300021 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 0.70 ppb, 5% of the action level and no violations are open. PFAS was detected below the federal limit.

A

Southbury earns an A for water quality

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

Lead: 0.70 ppb — 5% of the federal action level
PFAS detected below the federal limit
5 violations since 2015, 0 health-based
No violations currently open
Southbury's lead level vs. all Connecticut community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 0.70 ppb — 5% of the federal action level
✓ Lower lead than 84% of Connecticut utilities
Population Served
10880
~3415 connections
Water Source
Surface water
Purchased from another system — SDWIS source code SWP
Active Violations
0
5 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
5% of EPA action level
0.70 ppb
Action level: 15 ppb
The 90th-percentile lead result is 0.70 ppb, 5% 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.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2018 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2018 Resolved
Consumer Confidence Rule OTHER — — 2017 Resolved
Consumer Confidence Rule OTHER — — 2017 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2016 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

5 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 Heritage Water Company
PWSID CT1300021
Water source Surface water — Purchased from another system — SDWIS source code SWP
Population served 10,880
Service connections 3,415
Systems serving this area 6
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Southbury tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 0.70 ppb, 5% of the action level.
Does Southbury water have PFAS? ▼
PFAS was detected but stayed below the federal limit.
Who supplies water to Southbury? ▼
Heritage Water Company (PWSID CT1300021), one of 6 systems serving this area. Surface water. Purchased from another system — SDWIS source code SWP
When was this system last inspected? ▼
It was last inspected on 2024-06-27. Inspectors recorded 1 significant deficiency.

What Should Southbury Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
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.

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