Water Quality > Tributary and Waterfront Data > Saw Mill River > Ardsley- V.E. Macy Park ballfields

Ardsley- V.E. Macy Park ballfields

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

27 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
SortSortSortSortSortSortSortSort
10/12/201730Acceptable0.10.00.00.30.4
09/28/201741Acceptable0.00.00.00.00.0
09/14/201784Beach Advisory0.00.00.00.00.0
08/03/201724196Beach Advisory0.00.30.00.00.3
07/20/2017279Beach Advisory0.00.00.00.00.0
06/22/2017168Beach Advisory0.00.00.00.40.5
06/08/2017119Beach Advisory0.00.00.40.00.4
05/11/201720Acceptable0.00.00.00.00.0
10/27/201680Beach Advisory0.10.00.00.10.2
10/13/201650Acceptable0.00.00.00.00.0
09/29/2016110Beach Advisory0.00.00.50.00.5
09/15/2016330Beach Advisory0.00.00.00.00.0
09/01/20164610Beach Advisory0.10.00.00.00.1
08/18/2016310Beach Advisory0.10.10.30.00.5
08/04/2016120Beach Advisory0.00.00.00.00.0
07/14/2016370Beach Advisory0.10.00.00.00.1
06/30/2016410Beach Advisory0.00.00.60.41.1
06/16/2016160Beach Advisory0.00.00.00.00.0
06/02/2016120Beach Advisory0.00.00.01.11.1
05/19/201610Acceptable0.00.00.00.00.0
10/08/201563Beach Advisory0.00.00.00.00.0
09/24/201595Beach Advisory0.00.00.00.00.0
09/10/20155172Beach Advisory0.30.00.00.00.3
08/27/2015460Beach Advisory0.00.00.00.00.0
08/13/2015504Beach Advisory0.00.11.10.01.2
07/30/20153725Beach Advisory0.00.00.00.00.0
07/16/2015226Beach Advisory0.00.01.10.01.1

Entero Count (fecal indicator) and Rainfall Correlation

27 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 Saw Mill River runs along the length of V. E. Macy Park, between the parkway and the parkland. A paved walking trail parallels the river, but the waterway is mostly hidden due to thick vegetation. At this sampling site, there is a wide packed trail through the vegetation and to the streambank, indicating that this is an informal access point. 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

Enterococcus is an EPA-approved fecal contamination indicator.

Samples taken by citizen scientists and processed at Sarah Lawrence College Center for the Urban River at Beczak, using methods and study designs that are consistent with Riverkeeper’s Hudson River and Citizen Testing programs.

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