Elmsford- Above Mine Brook

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
10/18/2018292Beach Advisory0.
10/04/20182723Beach Advisory0.
09/20/2018776Beach Advisory0.
09/06/20181112Beach Advisory0.
08/23/20181968Beach Advisory0.
08/09/20183130Beach Advisory0.
07/26/20182064Beach Advisory0.
07/12/2018620Beach Advisory0.
06/28/2018>24196Beach Advisory1.
06/14/20181396Beach Advisory0.
05/31/2018537Beach Advisory0.
10/26/2017195Beach Advisory0.
10/12/20171576Beach Advisory0.
09/28/2017171Beach Advisory0.
08/31/2017160Beach Advisory0.
08/03/201724196Beach Advisory0.
07/20/2017341Beach Advisory0.
07/06/2017650Beach Advisory0.
06/22/2017171Beach Advisory0.
06/08/2017173Beach Advisory0.
05/25/20171010Beach Advisory0.
10/13/2016100Beach Advisory0.
09/29/2016220Beach Advisory0.
09/15/2016390Beach Advisory0.
09/01/20161410Beach Advisory0.
08/18/20161530Beach Advisory0.
08/04/2016310Beach Advisory0.
07/14/20161470Beach Advisory0.
06/30/2016530Beach Advisory0.
06/16/2016680Beach Advisory0.
06/02/2016220Beach Advisory0.
10/08/2015203Beach Advisory0.
09/24/2015328Beach Advisory0.
09/10/20159208Beach Advisory0.
08/27/2015569Beach Advisory0.
08/13/2015759Beach Advisory0.
07/16/2015581Beach 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:

In this area, the Saw Mill River runs through an office park, although it is buffered by a narrow corridor of vegetation. 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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