Is West Palm Beach tap water safe?

We don't give a safe or unsafe verdict. Here is what the public records show for Seacoast Utility Authority: 0 of 9 detected contaminants were above the health guidelines we use (2018-2025), no health-based violations were recorded since July 1, 2021 (EPA SDWIS), and the Water Score is 100/100. These records can be one to three years old and may not reflect the water at your tap. That isn't a clean bill of health or a health finding. EPA's national files don't hold sample results for most regulated contaminants. For health questions, ask your utility or your doctor.

33403 West Palm Beach water quality

Data updated October 24, 2026

Water Score · Strong

Seacoast Utility Authority

ZIP 33403 · West Palm Beach

Based on EPA SDWA, EPA UCMR and Florida DEP data, 2018-2025. Based on public utility data, not a test of your tap. Not medical advice.

Drinking glasses with cloudy spots — **Spots on glasses**

A faucet crusted with white buildup — **Crusty faucets**

Shower glass with a cloudy film — **Film on the shower**

A glass of tap water at a kitchen sink — **Tastes like a pool**

These show common South Florida water issues.

About ZIP 33403

Ranked #1 of 286 Florida ZIP codes by Water Score, as of October 24, 2026. Ranked #1 of 70 Palm Beach County ZIP codes by Water Score, as of October 24, 2026.

Median home value: $340,100 (Census ACS 2023 5-year)
Median household income: $69,050 (Census ACS 2023 5-year)
Households: 5,009 (Census ACS 2023 5-year)
Owner-occupied share: 48% (Census ACS 2023 5-year)

ZCTA, approximates ZIP

Who supplies the water

ZIP 33403 is served by one utility: Seacoast Utility Authority (94%).

A neighboring ZIP code, 33408 (North Palm Beach), is served mainly by the same utility, Seacoast Utility Authority. Its Water Score is also 100/100.

Your utility at a glance

Utility: Seacoast Utility Authority
EPA water system ID (PWSID): FL4501124
People served: 97,552
Water source: Ground water
Health-based violations: None recorded (EPA SDWIS, July to September 2026, since July 1, 2021)

How this ZIP compares

See the full report

ZIP 33403High-confidence match

Water report for Seacoast Utility Authority, ZIP 33403

West Palm Beach, Palm Beach County

Data updated October 24, 2026

According to EPA water system boundaries, ZIP 33403 (West Palm Beach, Palm Beach County) is served mainly by Seacoast Utility Authority, which does not buy water from another system, according to EPA SDWA records. In EPA SDWA, EPA UCMR and Florida DEP data from 2018-2025, none of the 9 detected contaminants are above published health guidelines. The Water Score is 100 out of 100, in the Strong band. Scored against health guidelines that are stricter than legal limits, using public utility data. Not a test of your tap.

Water Score

Higher is better. The score starts at 100 and goes down for each contaminant above its health guideline.

Based on EPA SDWA, EPA UCMR and Florida DEP data, 2018-2025. Educational estimate from public data, not medical advice.

Our claims cover three results: chlorine and hardness at your kitchen tap, and dissolved solids at your drinking-water faucet. Guarantee terms ›

Whole-home tank + drinking-water RO

Whole-home water treatment system: a tall black tank with a digital control valve and a window showing its filter media, beside a square brine tank — Illustration. The installed system may look different.

Compact white tankless reverse osmosis unit with a dark front panel and four small blue status lights — Illustration. The installed system may look different.

$3,200

$3,200 total, professionally installed by a licensed local plumber: $2,725 for the equipment + $475 installation by an independent licensed plumber, plus sales tax on the equipment

or equipment as low as $89.51/mo with Affirm

after $320 deposit · 36 mo · 15% APR

Pay for the equipment over time with Affirm: as low as $89.51 a month for 36 months at 15% APR on a $2,582.13 equipment balance and tax, after your $320 equipment deposit (total of payments $3,222.36). Rates 0–36% APR, subject to an eligibility check by Affirm; your terms may differ. Installation is paid to your plumber separately. Lenders: affirm.com/lenders.

0% APR available for eligible buyers. Subject to approval by Affirm.

Order now

Every result, with its health guideline and legal limit

Each bar is the level reported for ZIP 33403. It is drawn against its own health guideline, so rows are not comparable with each other. The ink line is the health guideline, with its publisher named on each row, and the dashed line is EPA's legal limit or, for PFAS, the level in EPA's 2024 rule. Log scale: each step right is ten times more.

Haloacetic acids (HAA5)2.81 ppb
Health guideline None publishedLegal limit 60 ppb
average of all samples
highest sample 9.3 ppb
detected in 114 of 115 samples
Total trihalomethanes (TTHMs)3.28 ppb
Health guideline None publishedLegal limit 80 ppb
average of all samples
highest sample 7.2 ppb
detected in 117 of 117 samples
Fluoride130 ppb
Health guideline None publishedLegal limit 4,000 ppb
average of all samples
highest sample 130 ppb
detected in 2 of 2 samples
Nitrite7.67 ppb
Health guideline None publishedLegal limit 1,000 ppb
average of all samples
highest sample 46 ppb
detected in 1 of 6 samples
Nitrate44.2 ppb
Health guideline None publishedLegal limit 10,000 ppb
average of all samples
highest sample 53 ppb
detected in 6 of 6 samples
Barium4.6 ppb
Health guideline None publishedLegal limit 2,000 ppb
average of all samples
highest sample 4.6 ppb
detected in 1 of 1 sample
Haloacetic acids (HAA9)2.3 ppb
Health guideline None publishedLegal limit No federal limit
average of all samples
highest sample 4.29 ppb
detected in 11 of 12 samples
Lead1.6 ppb
Health guideline None publishedEPA action level (90th percentile) 15 ppb (EPA action level, 90th percentile)
EPA's lead action level drops to 10 ppb on November 1, 2027.

See all 9 ›

Results for ZIP 33403: level reported, health guideline, and legal limit or action level
Contaminant	Level reported	Health guideline (publisher)	Legal limit or action level	Multiple of guideline
Haloacetic acids (HAA5)	2.81 ppb. average of all samples highest sample 9.3 ppb detected in 114 of 115 samples	None published	60 ppb	Not above its guideline, or no guideline
Total trihalomethanes (TTHMs)	3.28 ppb. average of all samples highest sample 7.2 ppb detected in 117 of 117 samples	None published	80 ppb	Not above its guideline, or no guideline
Fluoride	130 ppb. average of all samples highest sample 130 ppb detected in 2 of 2 samples	None published	4,000 ppb	Not above its guideline, or no guideline
Nitrite	7.67 ppb. average of all samples highest sample 46 ppb detected in 1 of 6 samples	None published	1,000 ppb	Not above its guideline, or no guideline
Nitrate	44.2 ppb. average of all samples highest sample 53 ppb detected in 6 of 6 samples	None published	10,000 ppb	Not above its guideline, or no guideline
Barium	4.6 ppb. average of all samples highest sample 4.6 ppb detected in 1 of 1 sample	None published	2,000 ppb	Not above its guideline, or no guideline
Haloacetic acids (HAA9)	2.3 ppb. average of all samples highest sample 4.29 ppb detected in 11 of 12 samples	None published	No federal limit	Not above its guideline, or no guideline
Lead	1.6 ppb	None published	15 ppb (EPA action level, 90th percentile)	Not above its guideline, or no guideline
Manganese	2.2 ppb. average of all samples highest sample 2.2 ppb detected in 1 of 1 sample	None published	No federal limit	Not above its guideline, or no guideline

Source: EPA SDWA, EPA UCMR and Florida DEP data, 2018-2025. Educational estimate from public data, not medical advice.

Questions people ask

Other contaminants detected, within their health guidelines or without one
Contaminant	This utility	Legal limit or action level	Health guideline	Years
Fluoride	130 ppbaverage of all sampleshighest sample 130 ppbdetected in 2 of 2 samples	4,000 ppb	None published	2020
Nitrate	44.2 ppbaverage of all sampleshighest sample 53 ppbdetected in 6 of 6 samples	10,000 ppb	None published	2018-2022
Nitrite	7.67 ppbaverage of all sampleshighest sample 46 ppbdetected in 1 of 6 samples	1,000 ppb	None published	2018-2022
Barium	4.6 ppbaverage of all sampleshighest sample 4.6 ppbdetected in 1 of 1 sample	2,000 ppb	None published	2020
Total trihalomethanes (TTHMs)	3.28 ppbaverage of all sampleshighest sample 7.2 ppbdetected in 117 of 117 samples	80 ppb	None published	2018-2022
Haloacetic acids (HAA5)	2.81 ppbaverage of all sampleshighest sample 9.3 ppbdetected in 114 of 115 samples	60 ppb	None published	2018-2022
Haloacetic acids (HAA9)	2.3 ppbaverage of all sampleshighest sample 4.29 ppbdetected in 11 of 12 samples	No federal limit	None published	2018
Manganese	2.2 ppbaverage of all sampleshighest sample 2.2 ppbdetected in 1 of 1 sample	No federal limit	None published	2020

Utilities serving ZIP 33403
Utility	Share of the ZIP area	Role
Seacoast Utility Authority	94%	Main utility (this report)

Which water utility serves ZIP 33403?

Seacoast Utility Authority (EPA water system FL4501124) is the main utility for ZIP 33403, based on EPA Water System Boundaries (CWS service area boundaries) v3.0, March 2026 release overlaid on Census ZIP code areas. Your water bill names your utility.

Does the utility serving ZIP 33403 buy water from another system?

No. EPA SDWA records (July to September 2026 extract) show no water purchases by Seacoast Utility Authority from another system.

How many contaminants in ZIP 33403 are above published health guidelines?

None of the 9 detected contaminants were above their published health guidelines in EPA SDWA, EPA UCMR and Florida DEP data, 2018-2025.

How is the Water Score for ZIP 33403 calculated?

The score starts at 100. It goes down 8 for each contaminant above a cited health guideline whose source states a cancer basis, 5 for each other contaminant above its cited guideline, 5 for each of PFOA and PFOS averaging above the 4.0 ppt limit in EPA's 2024 PFAS rule, 10 for each contaminant whose average of all samples is above EPA's legal limit (instead of its guideline step), and 1 for each contaminant with a cited cancer-based guideline that is detected below it. Only guidelines with a cited document count. The lowest score is 5. Higher is better. For this report: nothing is subtracted, so the score is 100.

What is the difference between a health guideline and a legal limit?

A legal limit is an enforceable standard, set by the EPA under the Safe Drinking Water Act. Limits weigh health research together with the cost and feasibility of treatment. A health guideline is published by public-health sources and based on health research alone. A utility can meet every legal limit and still be above a published health guideline.

How recent is the data for ZIP 33403?

Test results cover 2018-2025. EPA compliance records come from the July to September 2026 extract. Data may be one to three years old and may not reflect water at your tap.

33403 West Palm Beach water quality

Seacoast Utility Authority