States › Pennsylvania › Northampton County

Northampton County, PA Water Quality

Water quality data for 14 public water systems serving Northampton County, Pennsylvania — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 14 water systems · 37 cities
✅
Excellent — All Systems Performing Well

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

A

Northampton County Earns a A

Northampton County: 37 communities across 14 water systems. 100.0% have no open violations.

  • Median lead where detected: 5.00 ppb
  • 15 communities with a lead detection, 22 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 0 with significant inspection deficiencies
  • 100.0% of communities have no open violations
5 ppb
Median Lead Level
County-wide, 90th percentile
14
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
  • Bethlehem
    Not detected
    No federal limits exceeded on record
    A
  • Easton
    Not detected
    No federal limits exceeded on record
    A
  • Palmer
    Not detected
    No federal limits exceeded on record
    A
  • Forks
    Not detected
    No federal limits exceeded on record
    A
  • Bethlehem
    Not detected
    No federal limits exceeded on record
    A
⚠ Needs Attention
  • Moore
    19.00 ppb
    Lead above the 15 ppb action level
    C
  • Walnutport
    Not detected
    Copper above the 1,300 ppb action level
    C
  • Upper Nazareth
    5.00 ppb
    Lead at 5.00 ppb, above a third of the action level
    A
  • Nazareth
    5.00 ppb
    Lead at 5.00 ppb, above a third of the action level
    A
  • Bushkill
    5.00 ppb
    Lead at 5.00 ppb, above a third of the action level
    A
County Lead Level — Median 5 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 5 ppb — 33.3% of the federal action level
Systems by Lead Level
Under 5 ppb
3
5 – 10 ppb
11
10 – 15 ppb
1
No Data
22

All Cities in Northampton County

Bethlehem Not detected A
Easton Not detected A
Palmer Not detected A
Forks Not detected A
Bethlehem Not detected A
Northampton Not detected A
Hanover Not detected A
Wilson Not detected A
Lower Nazareth Not detected A
Upper Nazareth 5.00 ppb A
Hellertown 2.00 ppb A
Nazareth 5.00 ppb A
Bangor Not detected A
East Allen Not detected A
Bushkill 5.00 ppb A
Pen Argyl 5.00 ppb A
Plainfield 5.00 ppb A
Williams Not detected A
North Catasauqua Not detected A
Washington Not detected A
Freemansburg Not detected A
Wind Gap 5.00 ppb A
Bath 5.00 ppb B
Lower Saucon Not detected A
Walnutport Not detected C
Roseto Not detected A
Lehigh 4.00 ppb B
West Easton Not detected A
Tatamy 5.00 ppb A
East Bangor 7.00 ppb B
Allen Not detected A
Stockertown 5.00 ppb A
Moore 19.00 ppb C
Upper Mount Bethel Not detected A
Lower Mount Bethel 4.00 ppb B
Portland 8.00 ppb B
Glendon Not detected A
Showing 37 cities
No active violations Active violations

About Northampton County Drinking Water

Northampton County is served by 14 water systems covering 37 communities. No community here has an open violation on record.

Of the communities reporting lead results, 15 recorded a detection, with a median of 5.00 ppb — 33% of the federal action level. 22 reported none detected, which means below the laboratory limit rather than an absence of lead.

No community here has PFAS above the federal limit on record. State inspectors recorded no significant deficiencies.

Frequently Asked Questions

Is Northampton County tap water safe to drink?▼
No community in Northampton County has an open violation on record. No community has PFAS above the federal limit on record.
What is the lead level in Northampton County?▼
Among communities with a detection the median is 5.00 ppb, 33% of the 15 ppb action level. 22 reported none detected and 0 reported no result.
How many water systems serve Northampton County?▼
14 community water systems serve 37 communities here.
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