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Harbor Island Beach
WESTCHESTER, NY

CURRENT CONDITIONS   

Harbor Island Beach is a town operated beach and park complex in Mamaroneck, New York. It is open to the public with an increased fee for non-residents.

Harbor Island Beach WESTCHESTER, NY

Dive into the Data

  • D 2024

    In 2024, water quality samples at Harbor Island Beach failed 43% of the time.

    Water quality samples fail when bacteria levels are >104 colony forming units (cfu) of Enterococcus per 100mL.

      42% of samples failed after wet weather

      45% of samples failed after dry weather

        23 total samples were analyzed with 12 wet samples and 11 dry samples.

        The most recent sample date was September 9, 2024.

    Dry Weather
    FRQConsistently Fails
    MAGLow Intensity Failure

    Wet Weather
    FRQConsistently Fails
    MAGHigh Intensity Failure

  • BACTERIA LEVELS

    Colony Forming Units (CFU) of enterococcus/100 mL

    22 in
    D
    		 2024
    18 in
    C-
    		 2023
    15 in
    F
    		 2022
    23 in
    D
    		 2021
    13 in
    D+
    		 2020
    16 in
    D
    		 2019
    8 in
    C-
    		 2018
    10 in
    A
    		 2017
    6 in
    C
    		 2016
    10 in
    C-
    		 2015
    14 in
    A+
    		 2014
    18 in
    A+
    		 2013
    16 in
    D+
    		 2012
    21 in
    D
    		 2011
    10 in
    D+
    		 2010
    18 in
    C-
    		 2009
    13 in
    D
    		 2008
    13 in
    C-
    		 2007
    21 in
    B-
    		 2006
    9 in
    B+
    		 2005
    14 in
    B
    		 2004
    19 in
    F
    		 2003
    A
    B
    C
    D
    F
    N/A