Collier County Regional Water Treatment Plant water quality
Naples, FL · serves 216,993 people (86,140 connections) · Groundwater · Local government · EPA ID FL5114069
Data: U.S. EPA · How we read the data · How we check it
Buys water from Naples Water Dept. Treated water bought from another system can carry that system's contaminants.
Summary
No federal limits exceeded in EPA data.
- PFAS
- Not detectedNone of 29 PFAS found above EPA's reporting limits in 3 samples (2023–2025).
- Lead
- Below action level1.2 ppb (parts per billion) at the 90th percentile: 9 in 10 homes sampled were at or below it. Action level 15 ppb, falling to 10 ppb in Nov 2027. Monitoring period ending Dec 2023. Your home's pipes can make yours higher.
- Violations
- None health-basedNo health-based violations since 2016.
- Built before 1986, or not sure what your service line is made of? Check your service line and test your tap. Utility data can't show your pipes.
- Tested your own tap? Compare your result with these numbers. Moving? Compare this system with another.
- Read Collier County Regional Water Treatment Plant's 2026 water quality report (Consumer Confidence Report, from the utility). It lists every regulated contaminant tested, including ones not on this page. Questions: (239) 252-6937.
PFAS (“forever chemicals”)
EPA UCMR 5: 2 entry points tested Oct 2024 to Apr 2025. "Average" is the highest entry-point average (non-detects counted as zero), the way EPA compares UCMR 5 results to the limits. ppt = parts per trillion. These results do not determine compliance.
| Contaminant | Highest average |
|---|---|
| PFOA Not detected Limit 4 ppt | – |
| PFOS Not detected Limit 4 ppt | – |
| PFHxS Not detected Limit 10 ppt | – |
| PFNA Not detected Limit 10 ppt | – |
| HFPO-DA (GenX) Not detected Limit 10 ppt | – |
| Hazard Index (a combined score for PFHxS, PFNA, GenX and PFBS, where above 1 is over the limit) Not detected Limit 1 | – |
| PFBS Not detected Guideline 2,000 ppt | – |
| PFBA Not detected Guideline 6,000 ppt | – |
| PFHxA Not detected Guideline 3,000 ppt | – |
29 PFAS tested, 0 detected at least once. "Not detected" means below EPA's reporting limit (about 2 to 20 ppt depending on the chemical), not proven zero. PFAS not listed were not detected. The limits for PFHxS, PFNA, GenX and the Hazard Index were proposed for rescission in May 2026. That proposal is not final. Systems have until 2029 to meet the limits.
Lithium
Not detected in 4 samples (reporting limit 9 ppb). About lithium.
Lead and copper
Latest 90th percentile: 1.2 ppb lead (Jan 2023 – Dec 2023). Below action level
Highest since 2016: 1.4 ppb (Dec 2020).
| Monitoring period | Lead (90th pct.) |
|---|---|
| Jan 2023 – Dec 2023 | 1.2 ppb |
| Jan 2020 – Dec 2020 | 1.4 ppb |
| Jan 2017 – Dec 2017 | 1.2 ppb |
Earlier results (9)
| Jan 2014 – Dec 2014 | 1.5 ppb |
| Jan 2011 – Dec 2011 | 2.4 ppb |
| Jan 2008 – Dec 2008 | 2.3 ppb |
| Jan 2000 – Dec 2002 | 0.5 ppb |
| Jan 1999 – Dec 1999 | 2.4 ppb |
| Jan 1998 – Dec 1998 | 2.7 ppb |
| Jul 1997 – Dec 1997 | 4.4 ppb |
| Jan 1997 – Jun 1997 | 5.1 ppb |
| Jul 1992 – Dec 1992 | 8.2 ppb |
Lead comes from pipes and fixtures, not the source water, so it varies home to home. The 90th percentile means 9 in 10 sampled homes were at or below it. More on lead.
Violations
Health-based violations mean a contaminant exceeded a limit or a required treatment step was missed. Monitoring and reporting violations mean required tests or reports were late or missing, so the water's quality during that time is unknown. The total includes every violation in EPA's records, most of them paperwork.
Earlier EPA testing (2013–2020)
| Contaminant | Highest | Guideline |
|---|---|---|
| Manganese | 0.45 ppb | 300 ppb |
| Chlorate | 260 ppb | 210 ppb |
| Chromium-6 | 0.37 ppb | – |
| Strontium | 0.11 ppm | 1.5 ppm |
| Vanadium | 1.7 ppb | 21 ppb |
Where it serves
Naples
ZIP codes the system reported serving: 34104, 34108, 34109, 34110, 34112, 34113, 34114, 34116, 34119, 34120, 34134
Nearby utilities
- Naples Water Dept Naples · same area · PFAS above limit
- Bonita Springs Utilities Bonita Springs · 14 mi
- Immokalee Water Immokalee · 30 mi · PFAS above limit
- City of Fort Myers Water Treatment Plant Fort Myers · 32 mi
- Lee County Utilities Fort Myers · 32 mi
- Florida Governmental Utility Authority Lehigh Acres · 33 mi · PFAS above limit
Questions
Is Collier County Regional Water Treatment Plant water safe to drink?
Collier County Regional Water Treatment Plant has no health-based violations since 2016. EPA testing found no PFAS above the federal limits. Federal data can't tell you about your own pipes: lead comes from service lines and plumbing, so test your tap if your home was built before 1986. For the official word, read the utility's annual Consumer Confidence Report.
Does Collier County Regional Water Treatment Plant water have PFAS?
EPA tested Collier County Regional Water Treatment Plant for 29 PFAS between Oct 2024 and Apr 2025 and none were detected above the reporting limits (about 2 to 20 ppt depending on the chemical).
What is the lead level in Collier County Regional Water Treatment Plant water?
The most recent 90th-percentile lead result for Collier County Regional Water Treatment Plant is 1.2 ppb, for the period ending Dec 2023. The federal action level is 15 ppb, falling to 10 ppb in November 2027. The 90th percentile means 9 in 10 homes sampled were at or below this number. Individual homes can be higher.
Check these numbers yourself
Every figure on this page comes from public EPA records. You don't have to take our word for it:
- EPA's own report for FL5114069: violations, enforcement and inspections, straight from EPA.
- EPA UCMR 5 data: the PFAS and lithium results (search the file for PWSID FL5114069).
- EPA SDWIS download: the lead results, population and violation records we use.
- Collier County Regional Water Treatment Plant's 2026 water quality report: the utility's own annual report, including contaminants EPA's national database doesn't carry (link checked Nov 14, 2026). Phone: (239) 252-6937.
- Collier County Regional Water Treatment Plant website
Found something that doesn't match? Tell us and we'll check it against EPA's records. How we check our data.
Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.