Tap Water Quality Report
Tap water quality in NAPLES, Florida
Tap water in NAPLES, Florida receives a grade of C (73/100) from TapWaterSafety.org. It's served by 2 public water systems, primarily COLLIER COUNTY REGIONAL WTP. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline; PFAS contamination. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in NAPLES's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utilities serving NAPLES.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 23.5 ppb, 392x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 46.3 ppb, 308x above the EWG health guideline of 0.15 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 22.1 ppb, 221x above the EWG health guideline of 0.1 ppb.
PFAS contamination
Severe concernPerfluorooctane sulfonate (PFOS), Perfluorooctanoic acid (PFOA) detected. PFAS are persistent chemicals linked to cancer and immune effects with no known safe exposure threshold.
EPA compliance record
Official U.S. EPA records for COLLIER COUNTY REGIONAL WTP (system ID FL5114069) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Consumer Confidence Rule | Other (e.g. public notice) | 07/01/2025 | Open |
| Stage 2 Disinfectants and Disinfection Byproducts Rule | Missed testing or reporting | 10/01/2023 | Open |
| Revised Total Coliform Rule | Missed testing | 01/01/2024 | Open |
| Nitrate Rule | Missed testing or reporting | 01/01/2023 | Open |
| Revised Total Coliform Rule | Missed reporting | 05/01/2025 | Open |
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Water systems serving NAPLES
NAPLES is served by 2 public water systems. Click any utility to see its complete grade card and treatment plant contact info.
COLLIER COUNTY REGIONAL WTP
- Haloacetic acids (HAA9) significantly above health guideline
- Total trihalomethanes (TTHMs) significantly above health guideline
- Haloacetic acids (HAA5) significantly above health guideline
NAPLES WATER DEPT
- PFAS contamination
- Haloacetic acids (HAA9) significantly above health guideline
- Haloacetic acids (HAA5) significantly above health guideline
Recommended filters for NAPLES
Filters matched to the specific contaminants in NAPLES's water supply.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in NAPLES's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Perfluorooctane sulfonate (PFOS) PFAS |
8.45 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | EPA violation |
| Haloacetic acids (HAA9) Disinfection byproduct |
27.2 ppb | 0.06 | — | — | — | — | — | 454× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
46.3 ppb | 0.15 | 80.0 | 100 | — | — | — | 308× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
22.1 ppb | 0.1 | 60.0 | 60 | — | — | — | 221× over |
| Perfluorooctanoic acid (PFOA) PFAS |
2.1 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | 23× over |
| Chromium (hexavalent) Heavy metal |
0.293 ppb | 0.02 | — | — | — | — | — | 15× over |
| Nitrate Inorganic |
0.0293 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | Below guideline |
| Chlorate Disinfection byproduct |
35.1 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
1.9 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Aluminum Heavy metal |
34.0 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| Manganese Heavy metal |
2.09 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Molybdenum Other |
0.55 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
4.1 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
4.1 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
2.6 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
1.85 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.13 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.86 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Nitrite Inorganic |
0.01 ppm | — | 1.0 | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from COLLIER COUNTY REGIONAL WTP.