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MA Beaches Shut Down Due to Bacterial Fears
14 Jul
Summary
- Over 40 Massachusetts beaches closed for swimming due to heat wave.
- Bacterial exceedance is the primary reason for most beach closures.
- High temperatures and humidity persist through Thursday.

A significant heat wave has led to the closure of over 40 beaches for swimming throughout Massachusetts. Temperatures are projected to reach nearly 100 degrees, with high humidity expected to make the conditions feel even hotter. These closures are in effect as of Tuesday and are anticipated to continue through Thursday.
The primary cause for the widespread beach closures is "bacterial exceedance" detected in the water quality testing. The Massachusetts Department of Public Health's dashboard monitors these conditions, with bacteria potentially entering waterways from various sources including stormwater runoff, malfunctioning septic systems, and waste.
Swimming in affected waters can pose health risks such as stomach issues, respiratory problems, and skin irritations. Several locations, including those in Boston, Provincetown, and Salem, are among the affected areas. Some beaches are also closed due to harmful cyanobacteria blooms.