Water Quality > Tributary and Waterfront Data > Saw Mill River > Mount Pleasant- Saw Mill River Road

Mount Pleasant- Saw Mill River Road

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

41 Samples taken

Sample Date [i] Enterococcus Count

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.

QualityRain, day of (in)Prior Day2 Days Prior3 Days Prior Rain4 Days Total Rain
10/18/2018134Beach Advisory0.
10/04/20181354Beach Advisory0.
09/20/2018528Beach Advisory0.
09/06/2018158Beach Advisory0.
08/09/20181314Beach Advisory0.
07/26/20181515Beach Advisory0.
07/12/2018538Beach Advisory0.
06/28/2018>24196Beach Advisory1.
06/14/2018374Beach Advisory0.
05/31/2018583Beach Advisory0.
10/26/20172909Beach Advisory0.
10/12/20173169Beach Advisory0.
09/28/2017211Beach Advisory0.
09/14/201763Beach Advisory0.
08/31/2017109Beach Advisory0.
08/03/2017>24196Beach Advisory0.
07/20/2017246Beach Advisory0.
07/06/2017231Beach Advisory0.
06/22/2017161Beach Advisory0.
06/08/2017120Beach Advisory0.
05/25/20171467Beach Advisory0.
10/27/201690Beach Advisory0.
09/29/2016160Beach Advisory0.
09/15/2016180Beach Advisory0.
09/01/2016740Beach Advisory0.
08/18/20161160Beach Advisory0.
08/04/2016240Beach Advisory0.
07/14/20161500Beach Advisory0.
06/30/2016500Beach Advisory0.
06/16/2016300Beach Advisory0.
06/02/2016150Beach Advisory0.
05/19/2016140Beach Advisory0.
10/08/2015161Beach Advisory0.
09/24/2015213Beach Advisory0.
09/10/201519863Beach Advisory0.
08/27/2015657Beach Advisory0.
08/13/2015798Beach Advisory0.
07/30/2015754Beach Advisory0.
07/16/2015536Beach Advisory0.

Entero Count (fecal indicator) and Rainfall Correlation

41 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 and processed at laboratories that aren't directly affiliated with Riverkeeper, using methods and study designs that are consistent with Riverkeeper's Hudson River and Citizen Testing programs.

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 sampling site is located on the property of Rosedale Nurseries. The Saw Mill River?s banks are landscaped throughout the property. Upstream and downstream of this site are other commercial developments, but to the west the watershed is forested. This site was tested by Groundworks Hudson Valley's 2008-2012 study.

Agencies Responsible:

Westchester County Dept. of Health: 914-813-5000; NYSDEC Region 3: 914-428-2505

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