Water Quality > Tributary and Waterfront Data > Saw Mill River > Greenburgh- Rum Brook tributary

Greenburgh- Rum 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
10/18/2018121Beach Advisory0.
10/04/2018985Beach Advisory0.
09/20/20181106Beach Advisory0.
09/06/20181145Beach Advisory0.
08/23/20182064Beach Advisory0.
08/09/201812997Beach Advisory0.
07/26/201812997Beach Advisory0.
07/12/20181296Beach Advisory0.
06/28/2018>24196Beach Advisory1.
06/14/2018683Beach Advisory0.
05/31/2018328Beach Advisory0.
10/26/201763Beach Advisory0.
10/12/2017420Beach Advisory0.
09/28/2017605Beach Advisory0.
09/14/2017253Beach Advisory0.
08/31/2017250Beach Advisory0.
08/03/20171334Beach Advisory0.
07/20/2017487Beach Advisory0.
07/06/2017602Beach Advisory0.
06/22/2017459Beach Advisory0.
06/08/2017120Beach Advisory0.
05/25/20172489Beach Advisory0.
05/11/2017158Beach Advisory0.
10/13/2016110Beach Advisory0.
09/29/2016130Beach Advisory0.
09/15/20162600Beach Advisory0.
09/01/2016800Beach Advisory0.
08/18/20162760Beach Advisory0.
08/04/2016290Beach Advisory0.
07/14/20166870Beach Advisory0.
06/30/20161480Beach Advisory0.
06/16/2016820Beach Advisory0.
06/02/2016490Beach Advisory0.
05/19/2016120Beach Advisory0.
10/08/2015393Beach Advisory0.
09/24/2015443Beach Advisory0.
09/10/201524196Beach Advisory0.
08/27/2015933Beach Advisory0.
08/13/20151658Beach Advisory0.
07/30/20151607Beach Advisory0.
07/16/20151043Beach 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:

The Rum Brook drains a mixed land-cover watershed that includes sections of woodland, residential and commercial development, utility right-of-way, and recreational areas including a golf course.

Agencies Responsible:

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

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