States › North Carolina › Guilford County

Guilford County, NC Water Quality

Water quality data for 6 public water systems serving Guilford County, North Carolina — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 6 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

Guilford County Earns a B

Guilford County: 10 communities across 6 water systems. 100.0% have no open violations.

  • Median lead where detected: 1.40 ppb
  • 1 communities with a lead detection, 9 reporting none detected
  • 7 communities with PFAS above the federal limit
  • 0 with significant inspection deficiencies
  • 100.0% of communities have no open violations
1.4 ppb
Median Lead Level
County-wide, 90th percentile
6
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
  • Oak Ridge
    Not detected
    No federal limits exceeded on record
    B
  • Summerfield
    1.40 ppb
    No federal limits exceeded on record
    B
  • Stokesdale
    Not detected
    1 health-based violation since 2015
    A
  • Jamestown
    Not detected
    PFAS above the limit at 3 of 3 sampling points
    B
  • High Point
    Not detected
    PFAS above the limit at 1 of 1 sampling points
    C
⚠ Needs Attention
  • Greensboro
    Not detected
    PFAS above the limit at 2 of 2 sampling points
    C
  • Forest Oaks
    Not detected
    PFAS above the limit at 2 of 2 sampling points
    C
  • McLeansville
    Not detected
    PFAS above the limit at 2 of 2 sampling points
    C
  • Pleasant Garden
    Not detected
    PFAS above the limit at 2 of 2 sampling points
    C
  • Sedalia
    Not detected
    PFAS above the limit at 2 of 2 sampling points
    C
County Lead Level — Median 1.4 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 1.4 ppb — 9.3% of the federal action level
Systems by Lead Level
Under 5 ppb
1
No Data
9

All Cities in Guilford County

Greensboro Not detected C
High Point Not detected C
Jamestown Not detected B
Stokesdale Not detected A
Forest Oaks Not detected C
McLeansville Not detected C
Oak Ridge Not detected B
Summerfield 1.40 ppb B
Pleasant Garden Not detected C
Sedalia Not detected C
Showing 10 cities
No active violations Active violations

About Guilford County Drinking Water

Guilford County is served by 6 water systems covering 10 communities. No community here has an open violation on record.

Of the communities reporting lead results, 1 recorded a detection, with a median of 1.40 ppb — 9% of the federal action level. 9 reported none detected, which means below the laboratory limit rather than an absence of lead.

7 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 no significant deficiencies.

Frequently Asked Questions

Is Guilford County tap water safe to drink?▼
No community in Guilford County has an open violation on record. 7 of 10 have PFAS above the federal limit, which is the main open concern.
What is the lead level in Guilford County?▼
Among communities with a detection the median is 1.40 ppb, 9% of the 15 ppb action level. 9 reported none detected and 0 reported no result.
How many water systems serve Guilford County?▼
6 community water systems serve 10 communities here.
← Back to North Carolina water quality overview