Water Quality
Water Quality > Tributary and Waterfront Data > Wallkill River > New Paltz- Saw Mill Brook tributary

New Paltz- Saw Mill Brook tributary

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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

47 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
10/05/2019 >2420 Beach Advisory 0.0 0.0 0.5 0.0 0.5
09/14/2019 1986 Beach Advisory 0.0 0.0 0.1 0.0 0.1
08/10/2019 1986 Beach Advisory 0.0 0.0 0.5 0.8 1.3
07/13/2019 1553 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/15/2019 1414 Beach Advisory 0.0 0.0 0.4 0.0 0.4
05/11/2019 >2420 Beach Advisory 0.0 0.2 0.0 0.0 0.2
10/13/2018 >2420 Beach Advisory 0.1 0.0 1.8 0.0 1.9
08/11/2018 >2420 Beach Advisory 0.0 0.0 0.0 0.1 0.1
07/14/2018 1733 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/09/2018 649 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/12/2018 411 Beach Advisory 0.0 0.0 0.2 0.0 0.2
10/14/2017 1203 Beach Advisory 0.0 0.0 0.1 0.0 0.1
09/09/2017 770 Beach Advisory 0.0 0.0 0.1 1.0 1.2
08/12/2017 >2420 Beach Advisory 0.5 1.0 0.0 0.0 1.5
07/08/2017 2420 Beach Advisory 0.0 0.4 0.0 0.0 0.4
06/10/2017 153 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/13/2017 206 Beach Advisory 0.1 0.0 0.0 0.0 0.1
10/15/2016 93 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/17/2016 1300 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/20/2016 1553 Beach Advisory 0.0 0.0 0.2 0.0 0.2
07/16/2016 437 Beach Advisory 0.0 0.0 0.5 0.0 0.5
06/18/2016 727 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/21/2016 222 Beach Advisory 0.0 0.0 0.0 0.0 0.0
10/31/2015 102 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/26/2015 148 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/29/2015 99 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/25/2015 770 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/27/2015 727 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/30/2015 2420 Beach Advisory 0.0 0.0 0.0 0.3 0.3
11/01/2014 328 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/27/2014 308 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/30/2014 1733 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/26/2014 579 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/28/2014 980 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/31/2014 517 Beach Advisory 0.0 0.0 0.0 0.0 0.0
10/26/2013 112 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/28/2013 397 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/24/2013 1733 Beach Advisory 0.0 0.1 0.0 0.0 0.1
07/27/2013 80 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/29/2013 >2420 Beach Advisory 0.0 0.5 0.7 0.0 1.3
06/08/2013 >2420 Beach Advisory 0.3 2.0 0.1 0.0 2.5
10/27/2012 114 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/29/2012 571 Beach Advisory 0.2 1.7 0.0 0.1 2.0
09/01/2012 >2420 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/28/2012 980 Beach Advisory 0.0 0.0 0.6 0.0 0.7
06/30/2012 980 Beach Advisory 0.0 0.0 0.0 0.0 0.0
05/26/2012 219 Beach Advisory 0.0 0.0 0.0 0.0 0.0

Entero Count (fecal indicator) and Rainfall Correlation

47 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:

Saw Mill Brook flows through residential areas and the SUNY New Paltz campus before turning north and flowing along the Wallkill Valley Rail Trail to the Wallkill River. This sampling site is located near where Saw Mill Brook empties into the Wallkill River, at the DEC boat launch at Plains Road.

Agencies Responsible:

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

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