Is Miami tap water safe to drink?

Yes but with caveats

Miami's water meets EPA minimum standards but has some concerns. Filtration is recommended for sensitive individuals.

73/100
Purity Score
3
Issues Found
11.5 GPG
Hardness
Not detected
PFAS

3 Issues Detected in Miami

Very Hard Water (11.5 GPG)

Hard water causes scale in pipes and shortens appliance lifespan.

Hardness data for Miami

High Chlorine Residual

Elevated chlorine can affect taste smell and skin.

Chlorine info for Miami

Arsenic Approaching Limit (0.4 mg/L)

EPA limit is 0.010 mg/L.

Arsenic info for Miami
Florida

331,013,312,533,126 · Biscayne Aquifer

Miami Tap Water Analysis (Hard Water)

Moderate Risk Updated March 2026 2.7M residents
See Best Filters for Miami
73
Purity Score

Mineral content in Miami's water supply rates as very hard. This guide covers what that means for your home and which filters or softeners address it best.

Health Insights

  • 1
    With a hardness of 11.5 GPG, Miami residents may notice white scale on faucets. Hard water increases maintenance costs.
  • 2
    Chlorine residuals in Miami are on the higher end. An activated carbon filter readily removes it.

Score

73 /100
Moderate
"Good" threshold (70)

Miami tap water is sourced from Biscayne Aquifer and treated by Miami-Dade Water and Sewer Department. Water hardness is very hard at 11.5 GPG which may cause scale buildup. TDS is 470 ppm which is above the EPA secondary guideline of 500 ppm. Overall purity score: 73/100 (Moderate). Updated for 2026.

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Best filters matched to Miami's 3 issues.

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About Miami's Water

Miami Hard Water: Effects on Your Home

Hard water conditions in Miami (11.5 GPG) can leave white mineral deposits on fixtures, reduce soap lather, and gradually damage water-using appliances. Water heaters are particularly vulnerable: scale insulates the heating element, raising energy costs and reducing lifespan. A water softener exchanging calcium and magnesium for sodium eliminates scale formation throughout the home. For households concerned about sodium in drinking water, pairing a softener with an RO system at the kitchen tap is the standard approach.

High Chlorine in Miami Tap Water

Chlorine is a standard disinfectant used by municipal water systems to prevent bacterial contamination. Miami's water supply uses higher chlorine concentrations, which can affect taste, odor, and for some people skin and hair dryness with prolonged exposure. An activated carbon filter at the point of use removes chlorine quickly and cost-effectively. Whole-house carbon filtration is an option for households wanting chlorine-free water at every tap.

Explore Miami Water Data

Miami Water FAQ

Is Miami FL tap water safe to drink in 2026?
Miami tap water meets EPA federal drinking water standards and scores 73/100 (Moderate) on PurityMap for 2026. For most healthy adults the water is considered safe but point-of-use filtration adds an important layer of protection.
Does Miami FL use chlorine or chloramine for disinfection?
Miami uses chloramine as the primary disinfectant with a residual level of 2.1 ppm. Chloramine is harder to remove than free chlorine and requires a catalytic carbon or reverse osmosis filter. Standard Brita-style pitchers will NOT remove chloramine.
How hard is Miami FL water and what is the TDS level?
Miami water hardness is 11.5 grains per gallon (very hard) with a TDS of 470 ppm (poor). This level causes noticeable scale buildup in water heaters kettles and dishwashers. A water softener is recommended to protect plumbing and reduce soap usage.
Has PFAS been found in Miami FL drinking water?
Based on available EPA UCMR5 monitoring data as of 2026 PFAS have not been detected above EPA advisory levels in Miami drinking water.
What is the best water filter for Miami?
Based on Miami's water profile, we recommend the AFWFilters 5600sxt 48000 Grain Softener. Miami has very hard water (11.5 GPG) and elevated chlorine. A whole-house carbon plus softener system handles both.

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Data Sources

  • EPA SDWIS
  • EWG Tap Water Database
  • Miami-Dade Water and Sewer Department CCR
  • USGS monitoring data

PurityMap compiles public data. Updated March 2026.

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