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WaterSafeCheck

Stamford, CT Tap Water Quality

Water safety reports for all 19 ZIP codes in Stamford, Connecticut

Average Score

64/100

Health Violations

19

ZIP Codes

19

High Lead Risk

5

of 19 ZIP codes

C

About Tap Water in Stamford, CT

Water quality in Stamford, CT is currently rated with a moderate C grade (average score: 64/100 across 19 ZIP codes). This rating indicates that while the water provided by AQUARION-EASTERN FAIRFIELD COUNTY is treated and regulated, there have been notable compliance issues or contaminant detections recently. Residents should stay informed about the specific challenges affecting their local supply.

The accumulation of 19 health-based violations over the past 5 years highlights systemic challenges within Stamford's water infrastructure. When violations occur, it means that drinking water tests revealed contaminant levels exceeding safe limits, triggering mandatory corrective actions by Connecticut Department of Public Health. The city relies on ground water, which may require significant treatment upgrades to address these recurring issues.

Additionally, lead exposure risk remains a critical issue for certain neighborhoods. EPA data indicates that 5 out of 19 ZIP codes in Stamford are rated as High or Very High risk for lead. This risk is often driven by aging homes with pre-1986 plumbing containing lead solder or service lines. Families in these areas should test their tap water and consider NSF/ANSI 53 certified filters.

⚠ Lead Risk Alert: Some ZIP codes in Stamford are rated High or Very High for lead exposure risk based on EPA data. Search your specific ZIP code for a detailed lead level report.

Health-Based Contaminant Violations in Stamford

EPA records indicate that the following contaminants have exceeded Safe Drinking Water Act Maximum Contaminant Levels (MCLs) in Stamford water systems over the past 5 years.

Contaminant 0700

Note: The presence of a past violation does not necessarily mean current water is unsafe. Utilities are required to take corrective action. Review your Consumer Confidence Report for the latest status.

Water Quality by ZIP Code — Stamford, CT

Click any ZIP code for the full water quality report

C
06901

Stamford, CT

Score: 69/1001 violation
C
06904

Stamford, CT

Score: 69/1001 violation
C
06910

Stamford, CT

Score: 65/1001 violation
C
06911

Stamford, CT

Score: 65/1001 violation
C
06912

Stamford, CT

Score: 65/1001 violation
C
06913

Stamford, CT

Score: 65/1001 violation
C
06914

Stamford, CT

Score: 65/1001 violation
C
06920

Stamford, CT

Score: 65/1001 violation
C
06921

Stamford, CT

Score: 65/1001 violation
C
06922

Stamford, CT

Score: 65/1001 violation
C
06925

Stamford, CT

Score: 65/1001 violation
C
06926

Stamford, CT

Score: 65/1001 violation
C
06927

Stamford, CT

Score: 65/1001 violation
C
06928

Stamford, CT

Score: 65/1001 violation
C
06906

Stamford, CT

Score: 64/1001 violation
C
06907

Stamford, CT

Score: 64/1001 violation
C
06903

Stamford, CT

Score: 59/1001 violation
C
06905

Stamford, CT

Score: 59/1001 violation
D
06902

Stamford, CT

Score: 54/1001 violation

Frequently Asked Questions — Stamford Water Quality

Is tap water safe to drink in Stamford, CT?+
Tap water in Stamford has a grade of C, indicating compliance concerns in recent years. Families with young children or pregnant women should consider using a certified NSF/ANSI 53 water filter for drinking and cooking.
What is the water quality score for Stamford?+
The average water quality score across 19 ZIP codes in Stamford, CT is 64/100. Scores are derived from EPA violation history, lead levels, enforcement actions, and infrastructure risk indicators. Individual ZIP codes may vary — search your specific ZIP above for a personalized report.
Does Stamford have lead in its tap water?+
5 out of 19 ZIP codes in Stamford are rated High or Very High for lead exposure risk. Older homes built before 1986 may have lead service lines or plumbing fixtures. Residents should run their tap for 30 seconds before use and consider a certified NSF/ANSI 53 lead filter.
How do I get the water quality report for Stamford?+
Each ZIP code in Stamford has a full water quality report on this site — click any ZIP code below. You can also get the annual Consumer Confidence Report (CCR) from your local water utility. The CCR is required to be published every year by July 1 and contains actual contaminant measurements and violation history.
Where does Stamford's tap water come from?+
Tap water in Stamford, CT primarily comes from ground water. Groundwater systems pump water from underground aquifers, which is naturally filtered through soil and rock but can still contain naturally occurring contaminants.

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