States › Pennsylvania › Warren County

Warren County, PA Water Quality

Water quality data for 11 public water systems serving Warren 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 · 18 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

Warren County Earns a B

Warren County: 18 communities across 11 water systems. 100.0% have no open violations.

  • Median lead where detected: 3.00 ppb
  • 17 communities with a lead detection, 0 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 2 with significant inspection deficiencies
  • 100.0% of communities have no open violations
3 ppb
Median Lead Level
County-wide, 90th percentile
11
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
  • Spring Creek
    Not reported
    No federal limits exceeded on record
    B
  • Warren
    2.00 ppb
    1 health-based violation since 2015
    A
  • Pleasant
    2.00 ppb
    1 health-based violation since 2015
    A
  • Glade
    2.00 ppb
    1 health-based violation since 2015
    A
  • Pine Grove
    4.00 ppb
    2 health-based violations since 2015
    B
⚠ Needs Attention
  • Tidioute
    19.20 ppb
    Lead above the 15 ppb action level
    D
  • Limestone
    19.20 ppb
    Lead above the 15 ppb action level
    D
  • Triumph
    19.20 ppb
    Lead above the 15 ppb action level
    D
  • Deerfield
    19.20 ppb
    Lead above the 15 ppb action level
    D
  • Sugar Grove
    1000.00 ppb
    Lead above the 15 ppb action level
    C
County Lead Level — Median 3 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 3 ppb — 20% of the federal action level
Systems by Lead Level
Under 5 ppb
10
5 – 10 ppb
2
10 – 15 ppb
5
No Data
1

All Cities in Warren County

Warren 2.00 ppb A
Youngsville 3.00 ppb B
Pleasant 2.00 ppb A
Glade 2.00 ppb A
Conewango 5.00 ppb B
Sheffield 5.00 ppb B
Pine Grove 4.00 ppb B
Columbus 1.45 ppb B
Tidioute 19.20 ppb D
Clarendon 2.00 ppb B
Mead 2.00 ppb A
Brokenstraw 3.00 ppb B
Limestone 19.20 ppb D
Sugar Grove 1000.00 ppb C
Pittsfield 1.00 ppb B
Spring Creek Not reported B
Triumph 19.20 ppb D
Deerfield 19.20 ppb D
Showing 18 cities
No active violations Active violations

About Warren County Drinking Water

Warren County is served by 11 water systems covering 18 communities. No community here has an open violation on record.

Of the communities reporting lead results, 17 recorded a detection, with a median of 3.00 ppb — 20% of the federal action level. 0 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 significant deficiencies at 2 of them.

Frequently Asked Questions

Is Warren County tap water safe to drink?▼
No community in Warren County has an open violation on record. No community has PFAS above the federal limit on record.
What is the lead level in Warren County?▼
Among communities with a detection the median is 3.00 ppb, 20% of the 15 ppb action level. 0 reported none detected and 1 reported no result.
How many water systems serve Warren County?▼
11 community water systems serve 18 communities here.
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