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Collier County, FL Water Quality

Water quality data for 7 public water systems serving Collier County, Florida — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 7 water systems · 23 cities
✅
Excellent — All Systems Performing Well

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

A

Collier County Earns a A

Collier County: 23 communities across 7 water systems. 100.0% have no open violations.

  • Median lead where detected: 1.20 ppb
  • 23 communities with a lead detection, 0 reporting none detected
  • 2 communities with PFAS above the federal limit
  • 3 with significant inspection deficiencies
  • 100.0% of communities have no open violations
1.2 ppb
Median Lead Level
County-wide, 90th percentile
7
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
  • Golden Gate
    1.20 ppb
    No federal limits exceeded on record
    A
  • Marco Island
    2.90 ppb
    No federal limits exceeded on record
    A
  • Lely Resort
    1.20 ppb
    No federal limits exceeded on record
    A
  • Pelican Bay
    1.20 ppb
    No federal limits exceeded on record
    A
  • Orangetree
    1.20 ppb
    No federal limits exceeded on record
    A
⚠ Needs Attention
  • Naples
    1.30 ppb
    PFAS above the limit at 1 of 1 sampling points
    D
  • Immokalee
    0.90 ppb
    PFAS above the limit at 3 of 3 sampling points
    C
  • Plantation Island
    4.30 ppb
    Copper above the 1,300 ppb action level
    C
  • Everglades
    4.30 ppb
    Copper above the 1,300 ppb action level
    C
  • Golden Gate
    1.20 ppb
    No federal limits exceeded on record
    A
County Lead Level — Median 1.2 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 1.2 ppb — 8% of the federal action level
Systems by Lead Level
Under 5 ppb
23

All Cities in Collier County

Golden Gate 1.20 ppb A
Immokalee 0.90 ppb C
Naples 1.30 ppb D
Marco Island 2.90 ppb A
Lely Resort 1.20 ppb A
Pelican Bay 1.20 ppb A
Orangetree 1.20 ppb A
Naples Manor 1.20 ppb A
Naples Park 1.20 ppb A
Ave Maria 0.40 ppb B
Vineyards 1.20 ppb A
Lely 1.20 ppb A
Island Walk 1.20 ppb A
Verona Walk 1.20 ppb A
Berkshire Lakes 1.20 ppb A
Pelican Marsh 1.20 ppb A
Pine Ridge 1.20 ppb A
Heritage Bay 1.20 ppb A
Marco Shores-Hammock Bay 1.20 ppb A
Winding Cypress 1.20 ppb A
Everglades 4.30 ppb C
Goodland 4.70 ppb A
Plantation Island 4.30 ppb C
Showing 23 cities
No active violations Active violations

About Collier County Drinking Water

Collier County is served by 7 water systems covering 23 communities. No community here has an open violation on record.

Of the communities reporting lead results, 23 recorded a detection, with a median of 1.20 ppb — 8% of the federal action level. 0 reported none detected, which means below the laboratory limit rather than an absence of lead.

2 of 23 communities have PFAS above the limits EPA set in 2024, measured as a running annual average at each sampling point. State inspectors recorded significant deficiencies at 3 of them.

Frequently Asked Questions

Is Collier County tap water safe to drink?▼
No community in Collier County has an open violation on record. 2 of 23 have PFAS above the federal limit, which is the main open concern.
What is the lead level in Collier County?▼
Among communities with a detection the median is 1.20 ppb, 8% of the 15 ppb action level. 0 reported none detected and 0 reported no result.
How many water systems serve Collier County?▼
7 community water systems serve 23 communities here.
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