Is tap water safe in Cape Coral?

EPA SDWIS shows no active health-based violation in this profile's reporting window. That is not the same as proving every contaminant is absent, and federal data can lag state and utility records.

How hard is the water in Cape Coral, FL?

Nearby USGS observations produce an estimate of 316 ppm (18.5 grains per gallon), classified as very hard. This is not a tap measurement.

Do I need a water softener in ZIP code 33904?

At 316 ppm, a correctly sized whole-house softener can reduce scale buildup and hard-water spotting. Treatment for hardness does not remove all health-related contaminants.

City water profile

Cape Coral water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Cape Coral, Florida.

Median indexed hardness

316PPM

6 indexed ZIPs

Range 313–316 PPM

State comparison: 36 PPM above
State hardness rank: #93 of 290
Matched utilities: 1
Active health records: 0

City summary

What the indexed records say

Cape Coral has 6 published ZIP profiles across Lee County. The indexed median is 316 PPM, compared with 280 PPM across Florida.

Among the 290 Floridacities with an indexed median, Cape Coral ranks #93from highest to lowest. Across all 603 state ZIP profiles, available estimates run from 20to 374.5 PPM.

The 313–316 PPM range shows how much the available ZIP estimates vary within the city label.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs

Moderately hard0 ZIPs

Hard0 ZIPs

Very hard6 ZIPs

6 of 6 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance: 6.8 miles
Profiles with evidence: 6/6

Confidence labels

High: 0Moderate: 6Low: 0

Cape Coral, City Of

PWSID FL5360325

Groundwater

System population served: 172,693
Last reported: May 18, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Compliance history

What EPA records show

No active health-based violation appears among the associated systems in the represented EPA reporting quarter. This does not mean every contaminant was tested at every tap.

Record	System	Period	Status
TTHM	FL5360325	Oct 1, 2024	Archived
Total Haloacetic Acids (HAA5)	FL5360325	Oct 1, 2024	Archived
Nitrate	FL5360325	Jan 1, 2024	Resolved
Revised Total Coliform Rule	FL5360325	Sep 1, 2022	Resolved · health-based

Practical next steps

Move from index to evidence

1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
3. Test the tap when needed. Confirm health concerns or treatment sizing with the right method.

Continue comparing

Other Florida communities

Alva

Lee County

316 PPM median

Bokeelia

Lee County

316 PPM median

Fort Myers

Lee County

80 PPM median

Fort Myers Beach

Lee County

80 PPM median

North Fort Myers

Lee County

315 PPM median

Moore Haven

Glades County

314 PPM median

Search all 291 Florida cities →

Questions people ask

About water in Cape Coral

Is the water hard?

The indexed city median is 316 PPM. Open the ZIP report to verify the distance and confidence behind that estimate.

Is the tap water safe?

Compliance history is utility-wide and cannot guarantee conditions at every tap. Check current notices and test when address-specific evidence is needed.

Do I need treatment?

Choose treatment only after confirming the problem at the property. A softener targets hardness; contaminant treatment requires a matching, verified performance claim.