Water Quality
Water Quality > Hudson River Estuary Data > Ulster County & Dutchess County Sites > Port Ewen Drinking Water Intake

Port Ewen Drinking Water Intake

Port Ewen Drinking Water Intake
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Physical/Chemical Data

Physical, chemical and biological properties of the surface water that are measured continuously while the patrol boat is underway.

Entero Count (fecal indicator) and Rainfall

98 Samples taken

Sample Date [i] Enterococcus Count
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Entero Count

Enterococcus (“Entero”) is a fecal indicating bacterium that lives in the intestines of humans and other warm-blooded animals. It is the EPA preferred indicator for sewage contamination.

Quality Rain, day of (in) Prior Day 2 Days Prior 3 Days Prior Rain 4 Days Total Rain
Sort Sort Sort Sort Sort Sort Sort Sort
10/18/2023 21 Acceptable 0.0 0.0 0.0 0.0 0.0
09/20/2023 53 Acceptable 0.0 0.0 1.6 0.0 1.7
08/23/2023 15 Acceptable 0.0 0.0 0.0 0.0 0.0
07/19/2023 156 Beach Advisory 0.0 0.0 0.0 1.1 1.1
06/28/2023 12 Acceptable 0.0 0.0 0.3 0.0 0.3
05/03/2023 770 Beach Advisory 0.0 0.0 0.1 0.1 0.2
10/12/2022 11 Acceptable 0.0 0.0 0.0 0.0 0.0
09/12/2022 4 Acceptable 0.0 0.0 0.0 0.0 0.1
08/21/2022 12 Acceptable 0.0 0.0 0.0 0.0 0.0
07/17/2022 4 Acceptable 0.0 0.0 0.1 0.0 0.1
06/15/2022 13 Acceptable 0.0 0.1 0.0 0.0 0.1
05/25/2022 2 Acceptable 0.0 0.0 0.5 0.0 0.5
10/27/2021 >2420 Beach Advisory 0.1 2.5 0.7 0.1 3.4
09/15/2021 10 Acceptable 0.0 0.0 0.0 0.0 0.0
08/18/2021 4 Acceptable 0.0 0.0 0.0 0.2 0.2
07/21/2021 117 Beach Advisory 0.0 0.0 0.0 2.3 2.3
06/09/2021 <1 Acceptable 0.2 0.2 0.0 0.0 0.4
05/20/2021 41 Acceptable 0.0 0.0 0.0 0.0 0.0
10/16/2020 9 Acceptable 0.7 0.0 0.0 0.5 1.2
09/20/2020 9 Acceptable 0.0 0.0 0.0 0.0 0.0
08/16/2020 4 Acceptable 0.0 0.0 0.0 0.0 0.0
07/16/2020 4 Acceptable 0.0 0.0 0.0 0.0 0.0
06/18/2020 4 Acceptable 0.0 0.0 0.0 0.0 0.0
05/28/2020 2 Acceptable 0.0 0.0 0.0 0.0 0.0
10/10/2019 1 Acceptable 0.0 0.1 0.1 0.3 0.5
09/12/2019 11 Acceptable 0.0 0.0 0.0 0.0 0.0
08/08/2019 68 Beach Advisory 0.0 0.0 0.1 0.0 0.1
07/11/2019 1 Acceptable 0.0 0.0 0.0 0.0 0.0
06/07/2019 1 Acceptable 0.0 0.0 0.0 0.0 0.0
05/10/2019 5 Acceptable 0.0 0.0 0.0 0.3 0.3
10/12/2018 >2420 Beach Advisory 0.0 0.3 0.0 0.0 0.3
09/12/2018 86 Beach Advisory 0.0 0.0 0.1 0.0 0.1
08/16/2018 25 Acceptable 0.0 0.0 0.1 0.2 0.3
07/19/2018 10 Acceptable 0.0 0.0 1.1 0.0 1.1
06/15/2018 2 Acceptable 0.0 0.0 0.1 0.0 0.1
05/08/2018 1 Acceptable 0.0 0.0 0.1 0.0 0.1
10/18/2017 1 Acceptable 0.0 0.0 0.0 0.0 0.0
09/13/2017 1 Acceptable 0.0 0.0 0.0 0.0 0.0
08/16/2017 3 Acceptable 0.0 0.1 0.0 0.0 0.1
07/12/2017 5 Acceptable 0.0 0.2 0.0 0.0 0.2
06/14/2017 2 Acceptable 0.0 0.4 0.0 0.0 0.4
05/17/2017 3 Acceptable 0.0 0.0 0.0 0.1 0.1
04/06/2017 87 Beach Advisory 0.5 0.0 0.7 0.0 1.2
10/17/2016 1 Acceptable 0.0 0.0 0.0 0.0 0.0
09/16/2016 2 Acceptable 0.0 0.0 0.0 0.0 0.0
08/17/2016 6 Acceptable 0.1 0.1 0.0 0.1 0.3
07/15/2016 <1 Acceptable 0.0 0.0 0.0 0.0 0.0
06/17/2016 1 Acceptable 0.0 0.0 0.0 0.0 0.0
05/22/2016 2 Acceptable 0.0 0.0 0.0 0.0 0.0
10/14/2015 8 Acceptable 0.0 0.0 0.0 0.0 0.0
09/13/2015 14 Acceptable 0.1 0.6 0.1 0.9 1.7
08/14/2015 1 Acceptable 0.0 0.0 0.0 0.9 0.9
07/10/2015 2 Acceptable 0.0 0.1 0.0 0.1 0.2
06/12/2015 2 Acceptable 0.0 0.0 0.0 0.3 0.3
05/13/2015 2 Acceptable 0.0 0.0 0.0 0.0 0.0
10/15/2014 2 Acceptable 0.0 0.0 0.0 0.0 0.0
09/09/2014 1 Acceptable 0.0 0.0 0.0 0.1 0.1
08/13/2014 2 Acceptable 0.0 0.0 0.0 0.0 0.0
07/09/2014 8 Acceptable 0.0 0.1 0.2 0.0 0.3
06/14/2014 26 Acceptable 0.0 0.7 0.0 0.1 0.8
05/14/2014 5 Acceptable 0.0 0.0 0.0 0.0 0.0
10/19/2013 4 Acceptable 0.0 0.0 0.0 0.0 0.0
09/20/2013 3 Acceptable 0.0 0.0 0.0 0.0 0.0
08/18/2013 4 Acceptable 0.0 0.0 0.0 0.0 0.0
07/20/2013 1 Acceptable 0.0 0.0 0.1 0.0 0.1
06/22/2013 19 Acceptable 0.0 0.0 0.0 0.0 0.0
06/02/2013 2 Acceptable 0.0 0.0 0.0 0.0 0.0
10/14/2012 7 Acceptable 0.0 0.0 0.0 0.0 0.0
09/13/2012 8 Acceptable 0.0 0.0 0.0 0.0 0.0
08/16/2012 4 Acceptable 0.0 0.3 0.1 0.0 0.4
07/24/2012 <1 Acceptable 0.0 0.7 0.0 0.0 0.7
06/14/2012 17 Acceptable 0.0 0.2 0.3 0.0 0.5
05/18/2012 12 Acceptable 0.0 0.0 0.0 0.3 0.3
10/18/2011 128 Beach Advisory 0.0 0.0 0.1 0.0 0.1
09/17/2011 31 Acceptable 0.0 0.0 0.1 0.0 0.1
08/19/2011 5 Acceptable 0.0 0.1 0.0 0.1 0.2
07/16/2011 <1 Acceptable 0.0 0.0 0.0 0.0 0.0
06/30/2011 20 Acceptable 0.0 0.5 0.0 0.0 0.5
05/18/2011 199 Beach Advisory 0.9 0.8 0.1 0.3 2.1
10/15/2010 20 Acceptable 0.4 0.8 0.0 0.3 1.5
09/13/2010 7 Acceptable 0.0 0.0 0.0 0.0 0.0
08/20/2010 1 Acceptable 0.0 0.0 0.0 0.0 0.0
07/20/2010 <1 Acceptable 0.0 0.0 0.0 0.0 0.0
06/17/2010 1 Acceptable 0.0 0.0 0.0 0.0 0.0
05/24/2010 <1 Acceptable 0.0 0.0 0.0 0.0 0.0
10/22/2009 <1 Acceptable 0.0 0.0 0.0 0.0 0.0
09/16/2009 3 Acceptable 0.0 0.0 0.0 0.0 0.0
08/23/2009 27 Acceptable 0.0 0.3 0.3 0.0 0.6
07/30/2009 1733 Beach Advisory 0.0 0.3 0.0 0.2 0.5
06/10/2009 <1 Acceptable 0.0 0.9 0.0 0.0 0.9
05/17/2009 20 Acceptable 0.7 0.2 0.0 0.6 1.5
05/14/2009 2 Acceptable 0.1 0.0 0.0 0.0 0.1
10/22/2008 5 Acceptable 0.0 0.0 0.0 0.0 0.0
09/15/2008 2 Acceptable 0.0 0.2 0.1 0.4 0.7
08/07/2008 3 Acceptable 0.0 0.3 0.0 0.0 0.3
07/16/2008 <1 Acceptable 0.0 0.0 0.6 0.0 0.6
06/17/2008 3 Acceptable 0.0 0.2 0.0 0.1 0.3
05/21/2008 1 Acceptable 0.1 0.0 0.0 0.1 0.2

Entero Count (fecal indicator) and Rainfall Correlation

98 Samples taken

All Water Quality Parameters

98 Samples taken

Sample Date [i] Entero Count
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Entero Count

Enterococcus (“Entero”) is a fecal indicating bacterium that lives in the intestines of humans and other warm-blooded animals. It is the EPA preferred indicator for sewage contamination.

Quality [i] Temp (f)
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Temperature

Hudson River water temperature changes seasonally. Surface water temperature can change on small scales in the river reflecting natural and human influences.

[i] Salinity
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Salinity

Estuaries like the Hudson are where freshwaters in rivers meet the sea. Salinity tells us about the relative contribution of fresh and salt water within a particular region of the estuary. 

[i] Chlorophyll
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Chlorophyll

A measure of the amount of microscopic algae present in the water. High chlorophyll counts can mean high levels of the nutrients phosphorus and nitrogen, and the threat, or presence, of algae blooms.

[i] Turbidity
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Turbidity

Turbidity is a measure of the amount of fine particles suspended in the water. As turbidity rises, light penetration, a key factor for aquatic plants and algae, diminishes.

[i] Oxygen
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Oxygen

Oxygen concentrations in the water are closely connected to biological activities. Surface waters are typically in equilibrium with the atmosphere such that the oxygen concentration near the surface is close to fully saturated (100%).

Sort Sort Sort Sort Sort Sort Sort Sort
10/18/2023 21 Acceptable 15.39 0.12 1.69 13.7 105.7
09/20/2023 53 Acceptable 22.04 0.11 2.66 n/a n/a
08/23/2023 15 Acceptable 23.81 0.11 3.32 2.9 94.6
07/19/2023 156 Beach Advisory 24.48 0.08 4.03 25.4 90.9
06/28/2023 12 Acceptable 73.8 0.1 3.8 6.3 85.0
05/03/2023 770 Beach Advisory 53.2 0.1 3.3 23.9 98.6
10/12/2022 11 Acceptable 60.3 0.1 3 9.8 88.6
09/12/2022 4 Acceptable 74.7 0.1 3.4 8.1 77.6
08/21/2022 12 Acceptable 79.6 0.1 3.5 6.4 86.1
07/17/2022 4 Acceptable 79.6 0.1 4.9 10.1 96.3
06/15/2022 13 Acceptable 75.3 0.1 2.6 17.7 n/a
05/25/2022 2 Acceptable 67 0.1 6.3 27.8 95.3
10/27/2021 >2420 Beach Advisory 56.9 0.1 3.8 33 95
09/15/2021 10 Acceptable 71.6 0.1 5.4 10 88
08/18/2021 4 Acceptable 77.9 0.1 9.7 13 93
07/21/2021 117 Beach Advisory 74.3 0.1 3.3 46 80
06/09/2021 <1 Acceptable 72.4 0.1 2.9 6 99
05/20/2021 41 Acceptable 65.5 0.1 19.0 13 145
10/16/2020 9 Acceptable 62.1 0.1 4.9 13 94
09/20/2020 9 Acceptable 68.2 0.2 4.5 8 95
08/16/2020 4 Acceptable 80.8 0.1 5.4 5 97
07/16/2020 4 Acceptable 80.4 0.1 4.0 8 92
06/18/2020 4 Acceptable 75.3 0.1 3.8 8 103
05/28/2020 2 Acceptable 66.7 0.1 3.3 8 126
10/10/2019 1 Acceptable 62.9 0.1 2.6 4 91
09/12/2019 11 Acceptable 72.7 0.1 4.7 7 93
08/08/2019 68 Beach Advisory 80.3 0.1 6.7 7 95
07/11/2019 1 Acceptable 79.5 0.1 9.4 13 104
06/07/2019 1 Acceptable 68.5 0.1 5.4 16 101
05/10/2019 5 Acceptable 54.2 0.1 2.7 12 99
10/12/2018 >2420 Beach Advisory 64.3 0.1 3.6 19 95
09/12/2018 86 Beach Advisory 72.6 0.1 4.0 9 88
08/16/2018 25 Acceptable 77.6 0.1 3.6 10 79
07/19/2018 10 Acceptable 79.5 0.1 3.5 9 85
06/15/2018 2 Acceptable 70.2 0.1 4.1 11 95
05/08/2018 1 Acceptable 54.9 0.1 2.7 8 104
10/18/2017 1 Acceptable 65.1 0.1 2.7 10 91
09/13/2017 1 Acceptable 69.7 0.1 6.6 7 n/a
08/16/2017 3 Acceptable 76.4 0.1 8.2 12 105
07/12/2017 5 Acceptable 76.1 0.1 2.7 28 84
06/14/2017 2 Acceptable 67.4 0.1 6.3 10 103
05/17/2017 3 Acceptable 56.6 0.1 2.3 22 99
04/06/2017 87 Beach Advisory 44.8 0.1 1.7 50 102
10/17/2016 1 Acceptable 61.7 0.1 4.0 44 95
09/16/2016 2 Acceptable 74.6 0.1 4.2 n/a 91
08/17/2016 6 Acceptable 81.4 0.1 4.2 29 89
07/15/2016 <1 Acceptable 78.2 0.1 5.2 9 92
06/17/2016 1 Acceptable 72.7 0.1 5.2 21 99
05/22/2016 2 Acceptable 61.4 0.1 4.2 26 112
10/14/2015 8 Acceptable 61.4 0.1 4.7 30 88
09/13/2015 14 Acceptable 77.3 0.1 4.8 22 91
08/14/2015 1 Acceptable 77.7 0.1 6.0 12 96
07/10/2015 2 Acceptable 73.4 0.1 2.6 20 89
06/12/2015 2 Acceptable 72.9 0.1 5.4 2 101
05/13/2015 2 Acceptable 64.7 0.1 4.4 32 113
10/15/2014 2 Acceptable 64.1 0.1 3.4 19 91
09/09/2014 1 Acceptable 76.8 0.1 4.9 15 97
08/13/2014 2 Acceptable 78.1 0.1 1.8 17 89
07/09/2014 8 Acceptable 77.2 0.1 2.8 25 94
06/14/2014 26 Acceptable 71.4 0.1 5.4 27 101
05/14/2014 5 Acceptable 60.4 0.1 4.9 20 108
10/19/2013 4 Acceptable 63.5 0.1 2.9 33 95
09/20/2013 3 Acceptable 70.6 0.1 4.0 26 96
08/18/2013 4 Acceptable 75.5 0.1 2.9 28 85
07/20/2013 1 Acceptable 82.2 0.1 2.7 47 75
06/22/2013 19 Acceptable 69.2 0.1 2.2 87 98
06/02/2013 2 Acceptable 66.6 0.1 6.1 47 102
10/14/2012 7 Acceptable 60.1 0.1 2.5 37 90
09/13/2012 8 Acceptable 75.5 0.1 4.7 105 96
08/16/2012 4 Acceptable 81.8 0.2 2.3 14 108
07/24/2012 <1 Acceptable n/a n/a n/a n/a n/a
06/14/2012 17 Acceptable 72.7 0.1 2.4 29 93
05/18/2012 12 Acceptable 63.5 0.1 2.8 38 96
10/18/2011 128 Beach Advisory 59.6 0.1 0.5 68 92
09/17/2011 31 Acceptable 67.1 0.1 1.2 111 88
08/19/2011 5 Acceptable 77.7 0.1 4.8 46 100
07/16/2011 <1 Acceptable 80.3 0.1 5.3 13 n/a
06/30/2011 20 Acceptable 76.9 0.1 3.9 17 105
05/18/2011 199 Beach Advisory n/a n/a n/a n/a n/a
10/15/2010 20 Acceptable 57.8 0.1 2.8 25 87
09/13/2010 7 Acceptable 72.1 0.1 7.5 19 86
08/20/2010 1 Acceptable 79.2 0.1 8.8 8 95
07/20/2010 <1 Acceptable 81.8 0.1 4.0 8 79
06/17/2010 1 Acceptable 72.3 0.1 9.9 23 87
05/24/2010 <1 Acceptable 65.4 0.1 4.1 18 98
10/22/2009 <1 Acceptable 53.8 0.1 1.6 25 99
09/16/2009 3 Acceptable 70.2 0.1 5.5 16 95
08/23/2009 27 Acceptable 80.5 0.1 5.6 16 93
07/30/2009 1733 Beach Advisory 77.1 0.1 4.1 30 108
06/10/2009 <1 Acceptable n/a n/a n/a n/a n/a
05/17/2009 20 Acceptable n/a n/a n/a n/a n/a
05/14/2009 2 Acceptable 61.9 0.1 11.7 24 109
10/22/2008 5 Acceptable 57.1 0.1 10.9 12 103
09/15/2008 2 Acceptable n/a n/a n/a n/a n/a
08/07/2008 3 Acceptable n/a n/a n/a n/a n/a
07/16/2008 <1 Acceptable 80.9 0.1 2.0 110 104
06/17/2008 3 Acceptable n/a n/a n/a n/a n/a
05/21/2008 1 Acceptable 59.5 0.1 3.3 220 101

Water Quality*

Acceptable (0–60) Beach Advisory (61+)

*Single sample thresholds;
Enterococcus count per 100mL

Prior Four Day Rainfall
(in inches)

Dry Weather (0–0.25) Wet Weather (0.25+)

Enterococcus is an EPA-approved fecal contamination indicator.

Samples taken by Riverkeeper, Lamont-Doherty Earth Observatory and CUNY Queens College staff, and processed on the Riverkeeper vessel, according to the 2014 Quality Assurance Project Plan.

Rainfall data comes from wunderground.com. Wet weather is a common trigger of fecal contamination.

What do the Numbers Mean?

Water Quality scoring is based on the 2012 Recreational Water Quality Criteria from the US Environmental Protection Agency (EPA) for safe swimming. Learn More

About this location:

Port Ewen, NY
The drinking water intake at Port Ewen is used by a number of communities. Use of the area includes fishing from boats and from shore, boating, kayaking and swimming.

Agencies Responsible:

Ulster County Dept. of Health: 845-340-3010, and NYSDEC Region 3: 845-256-3000

Tell Gov. Hochul to block invasive species at the Erie and Champlain canals
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