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York County, SC Water Quality

Water quality data for 8 public water systems serving York County, South Carolina — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 8 water systems · 16 cities
✅
Excellent — All Systems Performing Well

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

A

York County Earns a A

York County: 16 communities across 8 water systems. 100.0% have no open violations.

  • Median lead where detected: 2.00 ppb
  • 6 communities with a lead detection, 10 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 6 with significant inspection deficiencies
  • 100.0% of communities have no open violations
2 ppb
Median Lead Level
County-wide, 90th percentile
8
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
  • Rock Hill
    2.00 ppb
    No federal limits exceeded on record
    A
  • Fort Mill
    Not detected
    No federal limits exceeded on record
    A
  • Tega Cay
    Not detected
    No federal limits exceeded on record
    A
  • India Hook
    2.00 ppb
    No federal limits exceeded on record
    A
  • Lesslie
    2.00 ppb
    No federal limits exceeded on record
    A
⚠ Needs Attention
  • York
    Not detected
    1 significant inspection deficiency
    C
  • Lake Wylie
    Not detected
    1 significant inspection deficiency
    B
  • Sharon
    Not detected
    1 significant inspection deficiency
    B
  • McConnells
    Not detected
    1 significant inspection deficiency
    B
  • Hickory Grove
    Not detected
    1 significant inspection deficiency
    B
County Lead Level — Median 2 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 2 ppb — 13.3% of the federal action level
Systems by Lead Level
Under 5 ppb
6
No Data
10

All Cities in York County

Rock Hill 2.00 ppb A
Fort Mill Not detected A
Lake Wylie Not detected B
Tega Cay Not detected A
York Not detected C
Clover Not detected A
Baxter Village 3.00 ppb B
India Hook 2.00 ppb A
Lesslie 2.00 ppb A
Newport 2.00 ppb A
Riverview Not detected B
Catawba 2.00 ppb A
Sharon Not detected B
McConnells Not detected B
Hickory Grove Not detected B
Smyrna Not detected B
Showing 16 cities
No active violations Active violations

About York County Drinking Water

York County is served by 8 water systems covering 16 communities. No community here has an open violation on record.

Of the communities reporting lead results, 6 recorded a detection, with a median of 2.00 ppb — 13% of the federal action level. 10 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 6 of them.

Frequently Asked Questions

Is York County tap water safe to drink?▼
No community in York County has an open violation on record. No community has PFAS above the federal limit on record.
What is the lead level in York County?▼
Among communities with a detection the median is 2.00 ppb, 13% of the 15 ppb action level. 10 reported none detected and 0 reported no result.
How many water systems serve York County?▼
8 community water systems serve 16 communities here.
← Back to South Carolina water quality overview