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Cumberland County, NJ Water Quality

Water quality data for 9 public water systems serving Cumberland County, New Jersey — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 9 water systems · 10 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

Cumberland County Earns a B

Cumberland County: 10 communities across 9 water systems. 90.0% have no open violations.

  • Median lead where detected: 2.90 ppb
  • 3 communities with a lead detection, 7 reporting none detected
  • 1 communities with PFAS above the federal limit
  • 2 with significant inspection deficiencies
  • 90.0% of communities have no open violations
2.9 ppb
Median Lead Level
County-wide, 90th percentile
9
Water Systems
Active CWS & NTNCWS
90%
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
  • Maurice River
    Not detected
    No federal limits exceeded on record
    A
  • Fairfield
    Not detected
    No federal limits exceeded on record
    B
  • Downe
    3.40 ppb
    No federal limits exceeded on record
    B
  • Deerfield
    Not detected
    5 health-based violations since 2015
    B
  • Upper Deerfield
    Not detected
    5 health-based violations since 2015
    B
⚠ Needs Attention
  • Stow Creek
    2.90 ppb
    1 violation currently open
    D
  • Vineland
    Not detected
    PFAS above the limit at 6 of 9 sampling points
    C
  • Millville
    Not detected
    Copper above the 1,300 ppb action level
    C
  • Bridgeton
    2.90 ppb
    Copper above the 1,300 ppb action level
    C
  • Hopewell
    Not detected
    Copper above the 1,300 ppb action level
    C
County Lead Level — Median 2.9 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 2.9 ppb — 19.3% of the federal action level
Systems by Lead Level
Under 5 ppb
3
No Data
7

All Cities in Cumberland County

Vineland Not detected C
Bridgeton 2.90 ppb C
Upper Deerfield Not detected B
Maurice River Not detected A
Millville Not detected C
Fairfield Not detected B
Downe 3.40 ppb B
Hopewell Not detected C
Stow Creek 2.90 ppb D
Deerfield Not detected B
Showing 10 cities
No active violations Active violations

About Cumberland County Drinking Water

Cumberland County is served by 9 water systems covering 10 communities. 90% have no open violations.

Of the communities reporting lead results, 3 recorded a detection, with a median of 2.90 ppb — 19% of the federal action level. 7 reported none detected, which means below the laboratory limit rather than an absence of lead.

1 of 10 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 2 of them.

Frequently Asked Questions

Is Cumberland County tap water safe to drink?▼
90% of communities have no open violation. 1 of 10 have PFAS above the federal limit, which is the main open concern.
What is the lead level in Cumberland County?▼
Among communities with a detection the median is 2.90 ppb, 19% of the 15 ppb action level. 7 reported none detected and 0 reported no result.
How many water systems serve Cumberland County?▼
9 community water systems serve 10 communities here.
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