Water Quality Report · Updated October 07, 2026
NAPLES WATER DEPT
NAPLES WATER DEPT delivers tap water graded C (67/100) by TapWaterSafety.org. The utility serves approximately 83,804 residents in NAPLES, Florida using groundwater. The most significant water quality concerns are: PFAS contamination; Haloacetic acids (HAA9) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline. For questions, the utility can be reached at 239-213-4716.
Is NAPLES tap water safe to drink?
NAPLES WATER DEPT delivers tap water that earns a grade of C (67/100) from TapWaterSafety.org — an average rating, with several contaminants above health guidelines but generally compliant with US legal limits.
The utility serves 83,804 residents in NAPLES, drawing from groundwater.
Public testing data identifies 6 contaminants in this water above EWG's health-based guidelines, including: Perfluorooctane sulfonate (PFOS), Haloacetic acids (HAA9), Haloacetic acids (HAA5), Total trihalomethanes (TTHMs), Perfluorooctanoic acid (PFOA), Chromium (hexavalent). For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.
EPA compliance record
Official U.S. EPA records for NAPLES WATER DEPT (system ID FL5110198) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Revised Total Coliform Rule | Missed reporting | 11/01/2023 | Open |
| Revised Total Coliform Rule | Missed testing | 07/01/2023 | Open |
| Ground Water Rule | Missed testing or reporting | 09/01/2023 | Open |
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Quick actions for NAPLES residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for NAPLES WATER DEPT.
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.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 27.2 ppb, 454x above the EWG health guideline of 0.06 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 20.7 ppb, 207x above the EWG health guideline of 0.1 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 23.0 ppb, 153x above the EWG health guideline of 0.15 ppb.
Contact NAPLES WATER DEPT
Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.
General Contact
Treatment Plant
Recommended water filters for NAPLES
Filters matched to the specific contaminants in this water supply.
Filter certified for PFOA/PFOS (NSF/ANSI 53 or 58)
$180-$750Reverse osmosis and some carbon block filters reduce PFAS. Look for certification to NSF/ANSI 53 or 58 for PFOA/PFOS.
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.
Score breakdown
This utility's overall score of 67/100 breaks down across five weighted components. Read the full methodology →
Contaminants detected — international standards comparison
Every contaminant detected, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal (the strictest US benchmark). 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 |
| Haloacetic acids (HAA5) Disinfection byproduct |
20.7 ppb | 0.1 | 60.0 | 60 | — | — | — | 207× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
23.0 ppb | 0.15 | 80.0 | 100 | — | — | — | 153× 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 |
0.015 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | Below guideline |
| Vanadium Other |
1.9 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Chlorate Disinfection byproduct |
13.5 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Aluminum Heavy metal |
34.0 ppb | 600.0 | — | 200 | — | 600 | — | 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 (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
NAPLES WATER DEPT service area
This water system serves 1 community in Collier County, Florida. Click any city for its dedicated tap water quality page.
Find the right filter for NAPLES water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.