Miami Water Quality 2026
Reviewed by Joe Letorney, 30-year water treatment expert · Former WQA Certified Water Treatment Specialist (CWS), Level VI
Miami-Dade Water and Sewer Authority serves nearly 3 million people from the Biscayne Aquifer — productive, but highly vulnerable to surface contamination from septic systems, agriculture, and saltwater intrusion at the coast. PFOS and related PFAS compounds have tested above federal MCLs in UCMR5 monitoring.
Florida utilities rely on chloramine in many counties. DBPs form faster in warm water — Miami's climate literally accelerates the chemistry. Shower and kitchen exposure both matter for sensitive individuals, though drinking water volume is still the primary regulatory focus.
Hurricane season introduces temporary boil-water notices and sediment spikes that are not reflected in annual averages. Keep a NSF-certified pitcher or bottled water stash for notices, then return to RO-filtered tap when the utility clears the system. Annual CCR reports never capture those acute events.
See best water filters for lead removal and what filters remove PFAS.
Check water hardness in Miami →
WaterCheckup Safety Score — an independent index from EPA public data and our formula. Not your utility’s official water quality rating, an EPA compliance grade, or a test of water at your tap. How we score →
Miami has significant water quality concerns including pfas violations across 4 compounds. EPA legal limits are set based on treatment feasibility — not always on what independent health scientists consider safe. Certified filtration is strongly recommended for this water supply.
Miamiwater may meet federal EPA limits while still showing contaminants above independent health guidelines (EWG, state advisories). EPA MCLs are often set on treatment feasibility — not a "zero risk" threshold. Compare levels below to health guidelines and state/U.S. utility averages, then see which filter technologies address your profile.
EPA UCMR5 PFAS plus utility/EWG averages from our contaminant bundle. Run a ZIP report for live SDWIS samples at your address.
PFAS (“forever chemicals”) persist in the body. NSF 58 reverse osmosis or NSF P473-certified filters remove PFAS at the tap — standard pitchers do not.
Removes with: RO
PFAS (“forever chemicals”) persist in the body. NSF 58 reverse osmosis or NSF P473-certified filters remove PFAS at the tap — standard pitchers do not.
Removes with: RO
EWG Tap Water Atlas utility average (2021–2023) · U.S. utility avg (EWG Atlas sample): 3.32 ppt · FL utility avg: 6.43 ppt
Removes with: RO
PFAS (“forever chemicals”) persist in the body. NSF 58 reverse osmosis or NSF P473-certified filters remove PFAS at the tap — standard pitchers do not.
Removes with: RO
PFAS (“forever chemicals”) persist in the body. NSF 58 reverse osmosis or NSF P473-certified filters remove PFAS at the tap — standard pitchers do not.
Removes with: RO
EWG Tap Water Atlas utility average (2021–2023) · U.S. utility avg (EWG Atlas sample): 2.51 ppt · FL utility avg: 3.73 ppt
Removes with: RO
PFAS (“forever chemicals”) persist in the body. NSF 58 reverse osmosis or NSF P473-certified filters remove PFAS at the tap — standard pitchers do not.
Removes with: RO
From MDWASA CCR 2024
Removes with: RO · Ion exchange
Can impair thyroid function — most concerning during pregnancy and childhood.
Removes with: RO · Carbon
PFAS (“forever chemicals”) persist in the body. NSF 58 reverse osmosis or NSF P473-certified filters remove PFAS at the tap — standard pitchers do not.
Removes with: RO · Carbon
PFAS (“forever chemicals”) persist in the body. NSF 58 reverse osmosis or NSF P473-certified filters remove PFAS at the tap — standard pitchers do not.
Removes with: RO · Carbon
EWG Tap Water Atlas utility average (2021–2023) · U.S. utility avg (EWG Atlas sample): 23.64 ppb · FL utility avg: 22.95 ppb
Removes with: RO · Carbon
EWG health guideline: 0.15 ppb
EWG Tap Water Atlas utility average (2021–2023) · U.S. utility avg (EWG Atlas sample): 30.97 ppb · FL utility avg: 29.88 ppb
Removes with: RO · Carbon
EWG health guideline: 0.06 ppb (HAA5)
EWG Tap Water Atlas utility average (2021–2023) · U.S. utility avg (EWG Atlas sample): 21.57 ppb · FL utility avg: 17.38 ppb
Removes with: RO · Carbon
EWG Tap Water Atlas utility average (2021–2023) · U.S. utility avg (EWG Atlas sample): 4.97 ppt · FL utility avg: 14.66 ppt
Removes with: RO
PFAS (“forever chemicals”) persist in the body. NSF 58 reverse osmosis or NSF P473-certified filters remove PFAS at the tap — standard pitchers do not.
Removes with: RO · Carbon
PFAS (“forever chemicals”) persist in the body. NSF 58 reverse osmosis or NSF P473-certified filters remove PFAS at the tap — standard pitchers do not.
Removes with: RO · Carbon
EWG Tap Water Atlas utility average (2021–2023) · U.S. utility avg (EWG Atlas sample): 17.82 ppb · FL utility avg: 13.92 ppb
Removes with: RO · Carbon
U.S. and state averages from EWG Tap Water Atlas utilities in our database. For your exact tap, use a ZIP report — home plumbing can differ from utility averages.
Miami-Dade water has PFOS at 33 ppt — over 8x the EPA's 4 ppt legal limit — detected in EPA UCMR5 monitoring.
Four PFAS compounds exceeded EPA MCLs: PFOS (33 ppt), PFOA (14 ppt), PFHxS (9.4 ppt), and PFNA (6.5 ppt).
Miami-Dade serves 2.8 million residents via the Biscayne Aquifer — one of the most vulnerable aquifer systems in the US to contamination.
Lead service lines are present in older Miami neighborhoods built before 1986. The public water system's own tests show 10 ppb at the 90th percentile.
Only reverse osmosis (NSF 58 certified) removes all four PFAS compounds detected above EPA limits.
Source: EPA UCMR5 national monitoring dataset · Testing period 2023–2025 · MCL = Maximum Contaminant Level (legally enforceable limit) · Health limit = EPA health advisory threshold
Reference matrix — not specific brands. NSF-certified carbon blocks, reverse osmosis (NSF 58), and ion-exchange softeners address different contaminants. Product picks below match this profile.
Miamiutility data is a strong baseline — but lead often comes from your home's pipes, and PFAS can vary by neighborhood. Choose certified lab testing for certainty, or skip straight to NSF-certified filters matched to this profile.
SimpleLab Tap Score mail-in panels test PFAS, lead, nitrates, bacteria, and 100+ contaminants at your kitchen tap. Results in about a week — then pick filtration with real numbers, not guesses.
Tap Score City Test — from $89 →Accredited labs · Best if you have old plumbing, pregnancy, or want proof before installing RO
Get NSF 58 / NSF 53 picks matched to Miami's PFAS, lead, and disinfection byproduct profile — reviewed by a 30-year water treatment expert.
Take the 3-question filter quiz →Best when contaminants are already flagged above and you want the right RO or pitcher today
Certified Filter Recommendations
Matched to what's actually in your water
COMMON QUESTIONS
Is Miami tap water safe to drink in 2026?
Miami water meets EPA legal standards, but meeting legal standards is not the same as being free of health concerns. EPA limits are set based on treatment feasibility, not always on what independent scientists consider safe. Miami has pfas violations across 4 compounds which is a significant concern — certified filtration is strongly recommended.
Does Miami water have PFAS?
EPA UCMR5 monitoring data for Miami (water system FL4130871) is shown above. PFAS — sometimes called "forever chemicals" — are synthetic compounds that don't break down in the body. Only reverse osmosis systems or NSF 58-certified carbon block filters reliably remove PFAS from tap water. Standard pitcher filters do not remove PFAS.
Does Miami water have lead?
Lead in tap water almost always comes from the pipes inside your home or building, not the treatment plant. Homes built before 1986 in Miami are most at risk because they may have lead solder, brass fittings, or lead service lines. The EPA has no safe level for lead in children. An NSF/ANSI 53-certified filter or reverse osmosis system removes lead at the tap.
What water filter is best for Miami?
For Miami's water profile — pfas violations across 4 compounds, pfos at 33 ppt — 8x epa limit — a reverse osmosis system addresses the widest range of contaminants. Under-sink RO (Waterdrop G3P600, Aquasana SmartFlow) is the gold standard for homeowners. Renters can use a countertop RO like the Waterdrop K19-S Countertop RO — zero installation required. Clearly Filtered pitchers are the best non-RO option for PFAS and lead.
How do I get my Miami water tested?
For the most accurate results for your specific tap, use a certified mail-in lab test rather than relying on city-wide data. SimpleLab Tap Score tests for 100+ contaminants including PFAS, lead, arsenic, and nitrates. Results come with a detailed health assessment and filter recommendations. City-wide EPA data like what you see above is a strong baseline, but your home's plumbing can add contaminants after the water leaves the treatment plant.
As of October 2024, all US public water systems must publish a public inventory of their lead service lines — the pipes connecting the water main to your home. Even if your public water system water tests clean at the treatment plant, lead can leach from these pipes into your tap. Homes built before 1986 are most at risk.
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City-wide data is just the start. Enter your ZIP to see your exact water system's EPA report, PFAS levels, and violation history — then get the right filter for your home.
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Reviewed by Joe Letorney, 30-year water treatment expert · Former WQA Certified Water Treatment Specialist (CWS), Level VI