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Columbia County, PA Water Quality

Water quality data for 11 public water systems serving Columbia County, Pennsylvania — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 11 water systems · 27 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

Columbia County Earns a B

Columbia County: 27 communities across 11 water systems. 92.6% have no open violations.

  • Median lead where detected: 6.00 ppb
  • 27 communities with a lead detection, 0 reporting none detected
  • 3 communities with PFAS above the federal limit
  • 2 with significant inspection deficiencies
  • 92.6% of communities have no open violations
6 ppb
Median Lead Level
County-wide, 90th percentile
11
Water Systems
Active CWS & NTNCWS
92%
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
  • Cleveland
    1.89 ppb
    No federal limits exceeded on record
    A
  • Conyngham
    1.89 ppb
    No federal limits exceeded on record
    A
  • North Centre
    4.50 ppb
    No federal limits exceeded on record
    B
  • Locustdale
    1.89 ppb
    No federal limits exceeded on record
    A
  • Centralia
    1.89 ppb
    No federal limits exceeded on record
    A
⚠ Needs Attention
  • Orangeville
    27.00 ppb
    Lead above the 15 ppb action level
    F
  • Main
    5.00 ppb
    1 violation currently open
    F
  • Madison
    18.00 ppb
    Lead above the 15 ppb action level
    D
  • Greenwood
    18.00 ppb
    Lead above the 15 ppb action level
    D
  • Pine
    18.00 ppb
    Lead above the 15 ppb action level
    D
County Lead Level — Median 6 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 6 ppb — 40% of the federal action level
Systems by Lead Level
Under 5 ppb
8
5 – 10 ppb
12
10 – 15 ppb
7

All Cities in Columbia County

Bloomsburg 8.00 ppb A
Berwick 0.90 ppb B
Scott 8.00 ppb A
Catawissa 5.00 ppb B
Mifflin 6.00 ppb C
Almedia 8.00 ppb A
Millville 18.00 ppb D
Benton 36.00 ppb C
South Centre 8.00 ppb A
Briar Creek 0.90 ppb B
Conyngham 1.89 ppb A
Briar Creek 0.90 ppb B
Hemlock 8.00 ppb A
Main 5.00 ppb F
Orangeville 27.00 ppb F
North Centre 4.50 ppb B
Benton 36.00 ppb C
Montour 8.00 ppb A
Catawissa 5.00 ppb B
Locustdale 1.89 ppb A
Orange 5.00 ppb B
Centralia 1.89 ppb A
Pine 18.00 ppb D
Franklin 5.00 ppb B
Cleveland 1.89 ppb A
Madison 18.00 ppb D
Greenwood 18.00 ppb D
Showing 27 cities
No active violations Active violations

About Columbia County Drinking Water

Columbia County is served by 11 water systems covering 27 communities. 93% have no open violations.

Of the communities reporting lead results, 27 recorded a detection, with a median of 6.00 ppb — 40% of the federal action level. 0 reported none detected, which means below the laboratory limit rather than an absence of lead.

3 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 2 of them.

Frequently Asked Questions

Is Columbia County tap water safe to drink?▼
93% of communities have no open violation. 3 of 27 have PFAS above the federal limit, which is the main open concern.
What is the lead level in Columbia County?▼
Among communities with a detection the median is 6.00 ppb, 40% of the 15 ppb action level. 0 reported none detected and 0 reported no result.
How many water systems serve Columbia County?▼
11 community water systems serve 27 communities here.
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