← Harry Harris Park (Key Largo South) live score
Harry Harris Park (Key Largo South) water quality today
Official bacteria testing, in plain words.
WATER QUALITY RIGHT NOW
Optimal
Latest test: pristine (10 cfu/100mL).
Sampled Jun 2 · FL DOH Healthy Beaches, conditions may have changed since
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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 Harry Harris Park (Key Largo South)'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
2 of the last 3 official tests landed in the all-clear band.
Water quality at nearby beaches
Key Largo (Pennekamp)Islamorada (Anne’s Beach)Coco Plum Beach (Marathon)Marathon (Sombrero)Cape Florida / Bill BaggsAll beaches
Also for Harry Harris Park (Key Largo South): 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.