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

20 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.

Quality Rain, day of (in) Prior Day 2 Days Prior 3 Days Prior Rain 4 Days Total Rain
Sort Sort Sort Sort Sort Sort Sort Sort
05/11/2017 20 Acceptable 0.0 0.0 0.0 0.0 0.0
10/27/2016 80 Beach Advisory 0.1 0.0 0.0 0.1 0.2
10/13/2016 50 Acceptable 0.0 0.0 0.0 0.0 0.0
09/29/2016 110 Beach Advisory 0.0 0.0 0.5 0.0 0.5
09/15/2016 330 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/01/2016 4610 Beach Advisory 0.1 0.0 0.0 0.0 0.1
08/18/2016 310 Beach Advisory 0.1 0.1 0.3 0.0 0.5
08/04/2016 120 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/14/2016 370 Beach Advisory 0.1 0.0 0.0 0.0 0.1
06/30/2016 410 Beach Advisory 0.0 0.0 0.6 0.4 1.1
06/16/2016 160 Beach Advisory 0.0 0.0 0.0 0.0 0.0
06/02/2016 120 Beach Advisory 0.0 0.0 0.0 1.1 1.1
05/19/2016 10 Acceptable 0.0 0.0 0.0 0.0 0.0
10/08/2015 63 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/24/2015 95 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/10/2015 5172 Beach Advisory 0.3 0.0 0.0 0.0 0.3
08/27/2015 460 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/13/2015 504 Beach Advisory 0.0 0.1 1.1 0.0 1.2
07/30/2015 3725 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/16/2015 226 Beach Advisory 0.0 0.0 1.1 0.0 1.1

Entero Count (fecal indicator) and Rainfall Correlation

20 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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