← South Marco Beach live score
South Marco Beach water quality today
Official bacteria testing, in plain words.
WATER QUALITY RIGHT NOW
Good
Latest test: good (18 cfu/100mL).
Sampled Jun 8 · FL DOH Healthy Beaches, conditions may have changed since
What this means for swimming
Enterococci is the indicator bacteria official beach programs test for, typically every week or two. Under 35 per 100 mL is the all-clear band; 71 and above usually triggers a swim advisory. Counts move week to week, and heavy rain can spike them for a day or two as runoff drains.
ShoreScore folds this reading into South Marco Beach's overall 0-100 score alongside live weather, surf, UV, seaweed reports, and storm radar, so one number tells you whether it's worth the trip.
Recent tests
All of the last 4 official tests landed in the all-clear band.
Water quality at nearby beaches
Tigertail Beach (Marco Island)Naples BeachLowdermilk Park (Naples)Vanderbilt Beach (Naples)Delnor-Wiggins PassAll beaches
Also for South Marco Beach: today's seaweed and sargassum report →
Source: Florida Department of Health Healthy Beaches sampling, checked daily. Informational only: posted signs and lifeguard guidance at the beach are the official word.