CheckPFAS

ZIP 00795 · Puerto Rico

Juana Diaz, PR

High Risk

8 compounds detected

Above EPA drinking water limits

PFOA Exceeds limit
22.00 ppt (550% of MCL)
→ 5.5× MCL
0 MCL: 4 ppt 22.0 ppt
PFOS Exceeds limit
12.40 ppt (310% of MCL)
→ 3.1× MCL
0 MCL: 4 ppt 12.4 ppt
PFHxS
8.90 ppt (89% of MCL)
0 MCL: 10 ppt 15 ppt
PFHxA no federal limit
260.00 ppt
0 390 ppt
PFPeA no federal limit
110.00 ppt
0 165 ppt
PFBA no federal limit
54.00 ppt
0 81 ppt
PFBS no federal limit
42.00 ppt
0 63 ppt
PFHpA no federal limit
13.00 ppt
0 19.5 ppt
Above EPA limit Below EPA limit No federal limit EPA MCL

Above EPA Limits

4 compounds exceed EPA Maximum Contaminant Levels in water serving this ZIP code. Standard pitcher filters like Brita do not remove PFAS. See filter recommendations below.

PFAS Detected
12
Above EPA Limits
4
Water Systems
3
Highest % of MCL
550%

Plain English

01What this means for you

One or more PFAS compounds were measured above the EPA's enforceable drinking water limit at a utility serving ZIP 00795. The EPA set these limits because long-term exposure at higher concentrations is associated with health effects including immune suppression, thyroid changes, and cancer risk increases. Standard pitcher filters (Brita, PUR) are not certified to remove PFAS. The most reliable at-home options are under-sink reverse osmosis systems or activated carbon block filters with an NSF/ANSI 58 certification specifically listing PFOA/PFOS reduction. Your water utility is required to bring levels into compliance by 2029 — filtering at the tap is the practical interim step if you'd like additional protection now.

What to do next

02Three concrete steps

  1. 01

    Install a certified filter

    A reverse osmosis or NSF/ANSI 58-certified carbon block at your kitchen tap is the most reliable solution. Standard pitcher filters (Brita, PUR) don't remove PFAS unless explicitly certified for it. See certified filter picks →

  2. 02

    Read your utility's CCR

    Your water utility publishes an annual Consumer Confidence Report covering the previous year's water quality, including their PFAS treatment plan if any. More detailed than this site's summary. How to read a CCR →

  3. 03

    Reduce other exposure routes

    Water isn't the only input. Replace badly-scratched non-stick pans, skip microwave popcorn bags and greaseproof fast-food wrappers, and choose stainless or cast iron cookware. Full action plan on the FAQ →

Filter Recommendations

Find the right filter for your water
See our tested & reviewed PFAS-certified filters, ranked by CheckPFAS Score

CheckPFAS earns a small commission on filter purchases at no cost to you. Ranked by performance, not commission. Affiliate disclosure.

02ARUZ

High Risk

PWSID · PR0003834

Water Type
Groundwater
PFAS Detected
2
Above MCL
1
State
Puerto Rico
Data Period
2023–2025

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFOS
Perfluorooctane sulfonic acid
7.10ppt
178% of limit
4 pptExceeds MCL
PFBS
Perfluorobutane sulfonic acid
6.40pptNo federal limitUnregulated

03JACAGUAS

High Risk

PWSID · PR0004534

Water Type
Groundwater
PFAS Detected
3
Above MCL
1
State
Puerto Rico
Data Period
2023–2025

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFOS
Perfluorooctane sulfonic acid
12.40ppt
310% of limit
4 pptExceeds MCL
PFHxS
Perfluorohexane sulfonic acid
8.90ppt
89% of limit
10 pptBelow limit
PFBS
Perfluorobutane sulfonic acid
5.00pptNo federal limitUnregulated

04EXPERIMENTAL

High Risk

PWSID · PR0004604

Water Type
Groundwater
PFAS Detected
7
Above MCL
2
State
Puerto Rico
Data Period
2023–2025

PFAS test results

CompoundDetectedvs. EPA LimitEPA LimitStatus
PFOA
Perfluorooctanoic acid
22.00ppt
550% of limit
4 pptExceeds MCL
PFOS
Perfluorooctane sulfonic acid
5.40ppt
135% of limit
4 pptExceeds MCL
PFHxA
Perfluorohexanoic acid
260.00pptNo federal limitUnregulated
PFPeA
Perfluoropentanoic acid
110.00pptNo federal limitUnregulated
PFBA
Perfluorobutanoic acid
54.00pptNo federal limitUnregulated
PFBS
Perfluorobutane sulfonic acid
42.00pptNo federal limitUnregulated
PFHpA
Perfluoroheptanoic acid
13.00pptNo federal limitUnregulated

Note: ZIP code 00795 is served by 3 separate water utilities. Results above show data for each system independently.

Source & Methodology

About this data

Source
EPA UCMR 5
Data released
January 2026
Sampling period
January 2023 – December 2025
Systems tested
~10,000 public water systems
Water systems (PWSID)
PR0003834 · PR0004534 · PR0004604
Detection threshold (MRL)
~1.5–2 ppt

Values shown are the highest single-sample concentration measured at entry points to the distribution system. Results reflect water quality at the treatment plant — aging pipes, building plumbing, and on-site storage can affect what actually reaches your tap. "Not detected" means below the MRL, not literally zero.

View raw EPA UCMR 5 occurrence data →

Related

More resources for your area

  1. 01

    How to read your utility's CCR

    Decode your annual Consumer Confidence Report

  2. 02

    On a private well?

    PFAS testing guide for well owners — EPA rules don't apply

  3. 03

    Which filter removes PFAS?

    Compare every method by removal rate & NSF certification

  4. 04

    PFAS health effects

    What the science shows, condition by condition

  5. 05

    PFAS compound guide

    Health effects & EPA limits for each compound