States › New York › Erie County

Erie County, NY Water Quality

Water quality data for 21 public water systems serving Erie County, New York — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 21 water systems · 31 cities
✅
Excellent — All Systems Performing Well

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

A

Erie County Earns a A

Erie County: 31 communities across 21 water systems. 96.8% have no open violations.

  • Median lead where detected: 6.00 ppb
  • 29 communities with a lead detection, 2 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 5 with significant inspection deficiencies
  • 96.8% of communities have no open violations
6 ppb
Median Lead Level
County-wide, 90th percentile
21
Water Systems
Active CWS & NTNCWS
96%
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
  • Grand Island
    1.13 ppb
    No federal limits exceeded on record
    A
  • Elma
    1.60 ppb
    No federal limits exceeded on record
    A
  • Concord
    2.00 ppb
    No federal limits exceeded on record
    A
  • Billington Heights
    1.60 ppb
    No federal limits exceeded on record
    A
  • Holland
    1.00 ppb
    No federal limits exceeded on record
    B
⚠ Needs Attention
  • Sardinia
    1.00 ppb
    1 violation currently open
    D
  • Aurora
    42.00 ppb
    Lead above the 15 ppb action level
    C
  • North Collins
    Not detected
    Copper above the 1,300 ppb action level
    B
  • Buffalo
    4.00 ppb
    2 significant inspection deficiencies
    B
  • Tonawanda
    2.10 ppb
    1 significant inspection deficiency
    A
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
11
5 – 10 ppb
17
10 – 15 ppb
1
No Data
2

All Cities in Erie County

Buffalo 4.00 ppb B
Amherst 9.85 ppb B
Cheektowaga 6.00 ppb A
Tonawanda 2.10 ppb A
Clarence 6.00 ppb A
Orchard Park 9.85 ppb B
Lancaster 9.85 ppb B
West Seneca 6.00 ppb A
Grand Island 1.13 ppb A
Lackawanna 6.00 ppb A
Depew 6.00 ppb A
Tonawanda 6.00 ppb A
Elma 1.60 ppb A
Newstead 9.85 ppb B
Boston 9.85 ppb B
Hamburg 9.85 ppb B
Aurora 42.00 ppb C
Alden 6.00 ppb A
Marilla 6.00 ppb A
Concord 2.00 ppb A
Evans 7.80 ppb B
Collins 2.00 ppb A
Town Line 6.00 ppb A
North Collins Not detected B
Billington Heights 1.60 ppb A
Holland 1.00 ppb B
Colden Not detected B
Brant 1.00 ppb B
Sardinia 1.00 ppb D
Wales 3.90 ppb B
Eden 9.85 ppb B
Showing 31 cities
No active violations Active violations

About Erie County Drinking Water

Erie County is served by 21 water systems covering 31 communities. 97% have no open violations.

Of the communities reporting lead results, 29 recorded a detection, with a median of 6.00 ppb — 40% of the federal action level. 2 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 5 of them.

Frequently Asked Questions

Is Erie County tap water safe to drink?▼
97% of communities have no open violation. No community has PFAS above the federal limit on record.
What is the lead level in Erie County?▼
Among communities with a detection the median is 6.00 ppb, 40% of the 15 ppb action level. 2 reported none detected and 0 reported no result.
How many water systems serve Erie County?▼
21 community water systems serve 31 communities here.
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