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City water profile

Miami water quality

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

Median indexed hardness

280PPM

19 indexed ZIPs

Range 278–280 PPM

State comparison
At state median
State hardness rank
#146 of 290
Matched utilities
6
Active health records
0

City summary

What the indexed records say

Miami has 19 published ZIP profiles across Miami-Dade County. The indexed median is 280 PPM, compared with 280 PPM across Florida.

Among the 290 Floridacities with an indexed median, Miami ranks #146from highest to lowest. Across all 603 state ZIP profiles, available estimates run from 20to 374.5 PPM.

The 278–280 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 hard19 ZIPs

19 of 19 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance
2.9 miles
Profiles with evidence
19/19

Confidence labels

High: 0Moderate: 19Low: 0

Observation window: Jun 6, 2016 to Jan 27, 2026.

ZIP directory

Water reports in Miami

Open a ZIP for site-level provenance and measurements.

ZIP code

33101

Very Hard

279.5 PPM

Nearest site
3.4 mi
Confidence
Moderate

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ZIP code

33125

Very Hard

280 PPM

Nearest site
1.5 mi
Confidence
Moderate

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ZIP code

33126

Very Hard

280 PPM

Nearest site
2.9 mi
Confidence
Moderate

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ZIP code

33127

Very Hard

280 PPM

Nearest site
1.7 mi
Confidence
Moderate

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ZIP code

33128

Very Hard

279 PPM

Nearest site
3 mi
Confidence
Moderate

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ZIP code

33129

Very Hard

279 PPM

Nearest site
3.2 mi
Confidence
Moderate

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ZIP code

33130

Very Hard

279 PPM

Nearest site
2.9 mi
Confidence
Moderate

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ZIP code

33131

Very Hard

279 PPM

Nearest site
4.1 mi
Confidence
Moderate

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ZIP code

33132

Very Hard

279 PPM

Nearest site
4.8 mi
Confidence
Moderate

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ZIP code

33133

Very Hard

278 PPM

Nearest site
2.3 mi
Confidence
Moderate

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ZIP code

33135

Very Hard

279 PPM

Nearest site
1 mi
Confidence
Moderate

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ZIP code

33136

Very Hard

279.5 PPM

Nearest site
3.2 mi
Confidence
Moderate

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ZIP code

33137

Very Hard

279.5 PPM

Nearest site
3.3 mi
Confidence
Moderate

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ZIP code

33138

Very Hard

280 PPM

Nearest site
2.5 mi
Confidence
Moderate

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ZIP code

33142

Very Hard

280 PPM

Nearest site
0.6 mi
Confidence
Moderate

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ZIP code

33144

Very Hard

280 PPM

Nearest site
3.8 mi
Confidence
Moderate

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ZIP code

33145

Very Hard

279 PPM

Nearest site
1.1 mi
Confidence
Moderate

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ZIP code

33149

Very Hard

278 PPM

Nearest site
6.3 mi
Confidence
Moderate

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ZIP code

33150

Very Hard

280 PPM

Nearest site
1.1 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Mdwasa - Main System

PWSID FL4130871

Groundwater
System population served
2,377,460
Last reported
May 18, 2026

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

Mdwasa/rex Utilities

PWSID FL4131202

Groundwater
System population served
45,200
Last reported
May 18, 2026

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

Americana Village

PWSID FL4131403

Groundwater
System population served
2,500
Last reported
May 18, 2026

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

Silver Palm Mobile Homes

PWSID FL4131312

Groundwater
System population served
250
Last reported
May 18, 2026

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

Redland Mhc, Llc

PWSID FL4130588

Groundwater
System population served
160
Last reported
May 18, 2026

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

Jones' Trailer Park

PWSID FL4130833

Groundwater
System population served
100
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.

RecordSystemPeriodStatus
TTHMFL4131403Oct 1, 2024Archived
Total Haloacetic Acids (HAA5)FL4131403Oct 1, 2024Archived
Consumer Confidence RuleFL4131312Jul 1, 2024Unaddressed
Consumer Confidence RuleFL4130588Jul 1, 2024Unaddressed
Consumer Confidence RuleFL4130833Jul 1, 2024Unaddressed
Total Haloacetic Acids (HAA5)FL4130871Apr 1, 2024Archived
TTHMFL4130871Apr 1, 2024Archived
Total Haloacetic Acids (HAA5)FL4131403Jan 1, 2024Archived
TTHMFL4131403Jan 1, 2024Archived
Revised Total Coliform RuleFL4130871Dec 1, 2023Resolved

Practical next steps

Move from index to evidence

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

Questions people ask

About water in Miami

Is the water hard?

The indexed city median is 280 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.