Water Quality
Water Quality > Tributary and Waterfront Data > Sparkill Creek > Piermont- Pirelli Park

Piermont- Pirelli Park

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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

44 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
10/27/2020 <10 Acceptable 0.0 0.1 0.0 0.0 0.1
09/22/2020 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
08/25/2020 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
07/28/2020 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
10/26/2019 20 Acceptable 0.0 0.0 0.0 0.1 0.1
09/28/2019 31 Acceptable 0.0 0.0 0.1 0.0 0.1
08/17/2019 10 Acceptable 0.0 0.0 0.0 0.0 0.0
07/20/2019 10 Acceptable 0.0 0.0 0.5 0.7 1.2
06/15/2019 10 Acceptable 0.0 0.0 0.7 0.0 0.7
05/18/2019 341 Beach Advisory 0.0 0.0 0.0 0.0 0.1
10/27/2018 1210 Beach Advisory 0.4 0.0 0.0 0.0 0.4
09/15/2018 144 Beach Advisory 0.0 0.0 0.0 0.2 0.2
08/18/2018 247 Beach Advisory 0.6 1.1 0.0 0.0 1.6
07/21/2018 41 Acceptable 0.0 0.0 0.0 0.0 0.0
06/16/2018 63 Beach Advisory 0.0 0.0 0.0 0.0 0.1
05/19/2018 12997 Beach Advisory 0.3 0.0 0.2 0.6 1.1
10/21/2017 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
09/16/2017 31 Acceptable 0.0 0.0 0.3 0.0 0.3
08/19/2017 75 Beach Advisory 0.0 0.5 0.0 0.0 0.5
07/15/2017 63 Beach Advisory 0.0 0.7 0.1 0.0 0.8
06/17/2017 75 Beach Advisory 0.0 0.2 0.0 0.1 0.3
05/20/2017 122 Beach Advisory 0.0 0.1 0.0 0.0 0.2
10/08/2016 30 Acceptable 0.0 0.0 0.0 0.0 0.0
09/10/2016 220 Beach Advisory 0.0 0.2 0.0 0.0 0.3
08/13/2016 80 Beach Advisory 0.0 0.6 0.1 0.1 0.8
07/09/2016 280 Beach Advisory 0.0 0.0 0.4 0.0 0.4
06/11/2016 40 Acceptable 0.0 0.0 0.0 0.2 0.2
05/14/2016 41 Acceptable 0.0 0.2 0.0 0.0 0.2
10/03/2015 275 Beach Advisory 0.2 0.2 0.1 1.2 1.8
09/05/2015 <10 Acceptable 0.0 0.0 0.0 0.0 0.0
08/01/2015 <10 Acceptable 0.0 0.0 1.5 0.0 1.5
07/04/2015 <10 Acceptable 0.0 0.0 0.0 1.1 1.1
06/06/2015 520 Beach Advisory 0.4 0.0 0.0 0.0 0.4
05/02/2015 10 Acceptable 0.0 0.0 0.0 0.0 0.0
10/04/2014 420 Beach Advisory 0.5 0.0 0.0 0.0 0.5
09/06/2014 10 Acceptable 0.0 0.0 0.0 0.0 0.0
08/02/2014 41 Acceptable 0.0 0.0 0.0 0.0 0.0
07/05/2014 86 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/07/2014 <10 Acceptable 0.0 0.0 0.5 0.0 0.5
05/03/2014 10 Acceptable 0.0 0.0 0.3 2.8 3.0
10/12/2013 30 Acceptable 0.0 0.0 0.0 0.0 0.0
09/14/2013 41 Acceptable 0.0 0.1 0.0 0.0 0.1
08/10/2013 20 Acceptable 0.1 0.6 0.3 0.0 0.9
07/13/2013 108 Beach Advisory 0.3 0.1 0.1 0.1 0.6

Entero Count (fecal indicator) and Rainfall Correlation

44 Samples taken

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 citizen scientists trained by Riverkeeper, 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:

This Hudson River site is located near the Piermont shoreline.

Agencies Responsible:

Rockland County Dept. of Health: 845-364-2900; NYSDEC Region 3: 914-428-2505

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