PROJECT NEPTUNE

Ocean Water Quality

Forecast for July 25, 2026
Manhattan Beach, CA

Manhattan Beach - 26th St

Normal

Predicted to be below the EPA swimming threshold today.EPA swimming thresholdThe EPA's safe-swimming limit for ocean water is 104 MPN/100mL — the most probable number of bacteria per 100 milliliters. Readings above this are classified as an exceedance, meaning bacteria levels are unsafe for swimming.

12%probability of unsafe bacteria levelsProbability of unsafe bacteria levelsLess is better — under 30% means low risk. There's a 12% chance the water has an unsafe amount of bacteria.
Normal
0–29%
Slightly elevated
30–49%
Not recommended
50–74%
Strongly not recommended
75–100%

7-Day Window

PastTodayForecast