Beach Water Quality Status

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Frequently Asked Questions

▾ How does the NYC Health Department monitor and sample beaches?

The NYC Health Department monitors NYC beach water quality throughout the bathing season to help protect swimmers from illnesses associated with contaminated water.

Beginning one month before beach season, the Department collects weekly water samples and visually inspects beaches for pollution, debris, sewage, and other sanitary concerns.

The Department also tracks rainfall and storm conditions because heavy rain can temporarily affect water quality through stormwater runoff and sewer overflows. Results are evaluated against water quality standards established in the NYC Health Code and the New York State Sanitary Code to determine whether a beach is open, under advisory, or closed.

▾ When is a water quality advisory issued?

When bacteria levels in the water are too high, the Department issues an advisory so the public can make informed decisions about swimming. This means swimming and wading are not recommended, but the beach is open.

An advisory may be issued based on rainfall, sewage overflows, stormwater runoff, debris, and other pollution sources that may affect water quality.

Advisory signs are posted at affected beaches, and updates are shared through Notify NYC and the Beach Water Quality Map.

▾ When is a beach closed?

City beaches may be closed for swimming and wading when:

  • Samples show that beach water quality does not meet established standards.
  • There have been a high number of illnesses or complaints about illness or injury.
  • Sewage and wastewater discharge have lowered the water quality.
  • Or other observed public health hazard.

In collaboration with NYC Parks, City beaches are sometimes also closed for other safety factors, such as extreme weather conditions.

Even when swimming and wading is not permitted, exercise such as walking and running, and spending time on the sand and boardwalk, are permitted during regular park hours.

Beaches are reopened once conditions improve and the Department determines the beach is safe for swimming again.

▾ How can I help protect local waterways?

You can help improve the health of local waterways by: