States › New York › Niagara County

Niagara County, NY Water Quality

Water quality data for 16 public water systems serving Niagara County, New York — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 16 water systems · 18 cities
✅
Excellent — All Systems Performing Well

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

A

Niagara County Earns a A

Niagara County: 18 communities across 16 water systems. 100.0% have no open violations.

  • Median lead where detected: 3.85 ppb
  • 14 communities with a lead detection, 4 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 0 with significant inspection deficiencies
  • 100.0% of communities have no open violations
3.85 ppb
Median Lead Level
County-wide, 90th percentile
16
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
  • Lockport
    2.00 ppb
    No federal limits exceeded on record
    A
  • Wheatfield
    Not detected
    No federal limits exceeded on record
    A
  • Niagara
    1.00 ppb
    No federal limits exceeded on record
    A
  • Royalton
    Not detected
    No federal limits exceeded on record
    A
  • Cambria
    2.00 ppb
    No federal limits exceeded on record
    A
⚠ Needs Attention
  • Niagara Falls
    5.90 ppb
    Lead at 5.90 ppb, above a third of the action level
    A
  • North Tonawanda
    5.70 ppb
    Lead at 5.70 ppb, above a third of the action level
    A
  • Lockport
    10.00 ppb
    Lead at 10.00 ppb, above a third of the action level
    A
  • Lewiston
    6.00 ppb
    Lead at 6.00 ppb, above a third of the action level
    A
  • Pendleton
    6.00 ppb
    Lead at 6.00 ppb, above a third of the action level
    A
County Lead Level — Median 3.85 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 3.85 ppb — 25.7% of the federal action level
Systems by Lead Level
Under 5 ppb
7
5 – 10 ppb
5
10 – 15 ppb
2
No Data
4

All Cities in Niagara County

Niagara Falls 5.90 ppb A
North Tonawanda 5.70 ppb A
Lockport 10.00 ppb A
Lockport 2.00 ppb A
Wheatfield Not detected A
Lewiston 6.00 ppb A
Niagara 1.00 ppb A
Pendleton 6.00 ppb A
Royalton Not detected A
Cambria 2.00 ppb A
Wilson Not detected A
Porter 1.00 ppb A
Hartland Not detected A
Newfane 1.00 ppb A
Middleport 7.00 ppb B
Ransomville 1.00 ppb A
Sanborn 2.00 ppb A
Somerset 10.00 ppb B
Showing 18 cities
No active violations Active violations

About Niagara County Drinking Water

Niagara County is served by 16 water systems covering 18 communities. No community here has an open violation on record.

Of the communities reporting lead results, 14 recorded a detection, with a median of 3.85 ppb — 26% of the federal action level. 4 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 Niagara County tap water safe to drink?▼
No community in Niagara County has an open violation on record. No community has PFAS above the federal limit on record.
What is the lead level in Niagara County?▼
Among communities with a detection the median is 3.85 ppb, 26% of the 15 ppb action level. 4 reported none detected and 0 reported no result.
How many water systems serve Niagara County?▼
16 community water systems serve 18 communities here.
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