Water Quality > Tributary and Waterfront Data > Saw Mill River > Elmsford- Mine Brook tributary

Elmsford- Mine Brook tributary

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

42 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
10/18/201874Beach Advisory0.
10/04/20181541Beach Advisory0.
09/20/2018336Beach Advisory0.
09/06/2018243Beach Advisory0.
08/23/2018860Beach Advisory0.
08/09/2018650Beach Advisory0.
07/26/20181497Beach Advisory0.
07/12/2018865Beach Advisory0.
06/28/2018>24196Beach Advisory1.
06/14/2018644Beach Advisory0.
05/31/2018504Beach Advisory0.
10/26/2017134Beach Advisory0.
10/12/2017556Beach Advisory0.
09/28/2017160Beach Advisory0.
09/14/2017108Beach Advisory0.
08/31/201785Beach Advisory0.
08/03/2017960Beach Advisory0.
07/20/2017504Beach Advisory0.
07/06/2017305Beach Advisory0.
06/22/2017142Beach Advisory0.
06/08/201762Beach Advisory0.
05/25/20172987Beach Advisory0.
10/27/2016130Beach Advisory0.
09/29/2016100Beach Advisory0.
09/15/2016160Beach Advisory0.
09/01/2016700Beach Advisory0.
08/18/2016930Beach Advisory0.
08/04/2016250Beach Advisory0.
07/14/20161520Beach Advisory0.
06/30/2016910Beach Advisory0.
06/16/2016620Beach Advisory0.
06/02/2016230Beach Advisory0.
10/08/2015156Beach Advisory0.
09/24/2015221Beach Advisory0.
09/10/201512997Beach Advisory0.
08/27/2015256Beach Advisory0.
08/13/2015842Beach Advisory0.
07/30/2015609Beach Advisory0.
07/16/2015315Beach Advisory0.

Entero Count (fecal indicator) and Rainfall Correlation

42 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 tributary emerges from a tunnel into an office park, where it is ditched and receives surface water runoff through numerous outfalls. 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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