States › Connecticut › Litchfield County

Litchfield County, CT Water Quality

Water quality data for 26 public water systems serving Litchfield County, Connecticut — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 26 water systems · 27 cities
✅
Excellent — All Systems Performing Well

Water quality across the county is outstanding with minimal violations and very low lead levels.

A

Litchfield County Earns a A

Litchfield County: 27 communities across 26 water systems. 88.9% have no open violations.

  • Median lead where detected: 2.00 ppb
  • 14 communities with a lead detection, 13 reporting none detected
  • 1 communities with PFAS above the federal limit
  • 4 with significant inspection deficiencies
  • 88.9% of communities have no open violations
2 ppb
Median Lead Level
County-wide, 90th percentile
26
Water Systems
Active CWS & NTNCWS
88%
Violation-Free
No active violations on record
How we grade counties: MyWaterIQ uses EPA SDWIS enforcement data — actual MCL violations and lead test results — not the aspirational MCLG targets used by some sites. A grade reflects real compliance history, not theoretical risk. Learn more →

Cities by Water Quality

⭐ Best Performing
  • Watertown
    2.00 ppb
    No federal limits exceeded on record
    A
  • Winchester
    Not detected
    No federal limits exceeded on record
    A
  • Thomaston
    2.80 ppb
    No federal limits exceeded on record
    A
  • Litchfield
    Not detected
    No federal limits exceeded on record
    A
  • Salisbury
    Not detected
    No federal limits exceeded on record
    B
⚠ Needs Attention
  • Barkhamsted
    Not detected
    Copper above the 1,300 ppb action level
    D
  • Sharon
    0.60 ppb
    Copper above the 1,300 ppb action level
    D
  • Warren
    Not detected
    1 violation currently open
    C
  • New Milford
    2.00 ppb
    PFAS above the limit at 2 of 5 sampling points
    C
  • New Hartford
    1.30 ppb
    Copper above the 1,300 ppb action level
    C
County Lead Level — Median 2 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 2 ppb — 13.3% of the federal action level
Systems by Lead Level
Under 5 ppb
12
5 – 10 ppb
1
10 – 15 ppb
1
No Data
13

All Cities in Litchfield County

Torrington Not detected A
New Milford 2.00 ppb C
Watertown 2.00 ppb A
Plymouth 0.60 ppb A
Winchester Not detected A
Thomaston 2.80 ppb A
Litchfield Not detected A
Salisbury Not detected B
Woodbury Not detected B
North Canaan 1.30 ppb B
Harwinton Not detected A
New Hartford 1.30 ppb C
Kent 2.00 ppb B
Sharon 0.60 ppb D
Norfolk Not detected B
Bethlehem 1.00 ppb B
Canaan 2.00 ppb B
Washington 5.00 ppb B
Candlewood Lake Club Not detected B
Morris Not detected B
Barkhamsted Not detected D
Goshen Not detected B
Bridgewater 13.00 ppb B
Cornwall 2.00 ppb B
Warren Not detected C
Cornwall Bridge 2.00 ppb B
Roxbury Not detected B
Showing 27 cities
No active violations Active violations

About Litchfield County Drinking Water

Litchfield County is served by 26 water systems covering 27 communities. 89% have no open violations.

Of the communities reporting lead results, 14 recorded a detection, with a median of 2.00 ppb — 13% of the federal action level. 13 reported none detected, which means below the laboratory limit rather than an absence of lead.

1 of 27 communities have PFAS above the limits EPA set in 2024, measured as a running annual average at each sampling point. State inspectors recorded significant deficiencies at 4 of them.

Frequently Asked Questions

Is Litchfield County tap water safe to drink?▼
89% of communities have no open violation. 1 of 27 have PFAS above the federal limit, which is the main open concern.
What is the lead level in Litchfield County?▼
Among communities with a detection the median is 2.00 ppb, 13% of the 15 ppb action level. 13 reported none detected and 0 reported no result.
How many water systems serve Litchfield County?▼
26 community water systems serve 27 communities here.
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