Yonkers- Hearst Street

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

19 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
10/27/2016 120 Beach Advisory 0.0 0.0 0.0 0.1 0.1
10/13/2016 120 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/29/2016 50 Acceptable 0.0 0.0 0.3 0.0 0.3
09/15/2016 40 Acceptable 0.0 0.0 0.0 0.0 0.0
09/01/2016 230 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/18/2016 100 Beach Advisory 0.0 0.1 0.9 0.0 0.9
08/04/2016 140 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/14/2016 2720 Beach Advisory 0.2 0.0 0.0 0.0 0.2
06/30/2016 380 Beach Advisory 0.0 0.0 0.5 0.3 0.8
06/16/2016 280 Beach Advisory 0.1 0.0 0.0 0.0 0.1
06/02/2016 160 Beach Advisory 0.0 0.0 0.0 1.1 1.1
05/19/2016 50 Acceptable 0.0 0.0 0.0 0.0 0.0
10/08/2015 266 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/24/2015 109 Beach Advisory 0.0 0.0 0.0 0.0 0.0
09/10/2015 >24196 Beach Advisory 0.4 0.0 0.0 0.0 0.4
08/27/2015 327 Beach Advisory 0.0 0.0 0.0 0.0 0.0
08/13/2015 567 Beach Advisory 0.0 0.0 0.0 0.0 0.0
07/30/2015 1034 Beach Advisory 0.0 0.0 0.1 0.0 0.1
07/16/2015 473 Beach Advisory 0.0 0.0 0.0 0.0 0.0

Entero Count (fecal indicator) and Rainfall Correlation

19 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 sampling site is located approximately one mile upstream of the channelized former industrial area at the outskirts of downtown Yonkers. Near this location, residential development becomes more dense, as the river flows into Yonkers.

Agencies Responsible:

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

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