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Hartford County, CT Water Quality

Water quality data for 13 public water systems serving Hartford County, Connecticut — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 13 water systems · 28 cities
✅
Generally Safe — Most Systems Performing Well

The majority of water systems have no active violations and lead levels well below the federal action level.

B

Hartford County Earns a B

Hartford County: 28 communities across 13 water systems. 100.0% have no open violations.

  • Median lead where detected: 1.90 ppb
  • 12 communities with a lead detection, 16 reporting none detected
  • 13 communities with PFAS above the federal limit
  • 15 with significant inspection deficiencies
  • 100.0% of communities have no open violations
1.9 ppb
Median Lead Level
County-wide, 90th percentile
13
Water Systems
Active CWS & NTNCWS
100%
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
  • New Britain
    Not detected
    No federal limits exceeded on record
    A
  • Simsbury
    0.30 ppb
    No federal limits exceeded on record
    A
  • Berlin
    2.20 ppb
    No federal limits exceeded on record
    A
  • Granby
    0.30 ppb
    No federal limits exceeded on record
    A
  • East Granby
    0.30 ppb
    No federal limits exceeded on record
    A
⚠ Needs Attention
  • Southington
    Not detected
    PFAS above the limit at 3 of 6 sampling points
    D
  • Avon
    2.40 ppb
    PFAS above the limit at 2 of 6 sampling points
    D
  • Manchester
    Not detected
    PFAS above the limit at 4 of 7 sampling points
    C
  • Enfield
    1.90 ppb
    PFAS above the limit at 4 of 7 sampling points
    C
  • South Windsor
    1.90 ppb
    PFAS above the limit at 4 of 7 sampling points
    C
County Lead Level — Median 1.9 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 1.9 ppb — 12.7% of the federal action level
Systems by Lead Level
Under 5 ppb
12
No Data
16

All Cities in Hartford County

Hartford Not detected A
New Britain Not detected A
West Hartford Not detected A
Bristol Not detected B
Manchester Not detected C
East Hartford Not detected A
Southington Not detected D
Newington Not detected A
Windsor Not detected A
Wethersfield Not detected A
Glastonbury Not detected A
Enfield 1.90 ppb C
Bloomfield Not detected A
Rocky Hill Not detected A
Farmington 2.40 ppb C
Simsbury 0.30 ppb A
South Windsor 1.90 ppb C
Plainville Not detected C
Avon 2.40 ppb D
Windsor Locks 1.90 ppb C
Suffield 1.90 ppb C
East Windsor 1.90 ppb C
Berlin 2.20 ppb A
Canton Not detected B
Granby 0.30 ppb A
Burlington Not detected B
East Granby 0.30 ppb A
Marlborough 2.20 ppb B
Showing 28 cities
No active violations Active violations

About Hartford County Drinking Water

Hartford County is served by 13 water systems covering 28 communities. No community here has an open violation on record.

Of the communities reporting lead results, 12 recorded a detection, with a median of 1.90 ppb — 13% of the federal action level. 16 reported none detected, which means below the laboratory limit rather than an absence of lead.

13 of 28 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 15 of them.

Frequently Asked Questions

Is Hartford County tap water safe to drink?▼
No community in Hartford County has an open violation on record. 13 of 28 have PFAS above the federal limit, which is the main open concern.
What is the lead level in Hartford County?▼
Among communities with a detection the median is 1.90 ppb, 13% of the 15 ppb action level. 16 reported none detected and 0 reported no result.
How many water systems serve Hartford County?▼
13 community water systems serve 28 communities here.
← Back to Connecticut water quality overview