New Castle- Echo Lake

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

37 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
10/21/201755Acceptable0.00.00.00.00.0
09/16/201729Acceptable0.00.00.40.00.5
07/15/20171414Beach Advisory0.00.50.40.00.8
06/17/20171046Beach Advisory0.00.20.00.00.2
06/16/201729Acceptable0.00.00.40.00.5
05/20/201733Acceptable0.00.00.00.00.0
10/08/201630Acceptable0.00.00.00.00.0
09/10/2016128Beach Advisory0.00.00.00.00.0
08/13/2016>2420Beach Advisory0.00.40.00.40.8
07/09/2016>2420Beach Advisory0.00.00.40.00.4
06/11/20161733Beach Advisory0.00.00.00.30.3
05/14/20165Acceptable0.00.20.00.00.2
10/03/20151733Beach Advisory0.40.50.11.32.2
09/05/2015188Beach Advisory0.00.00.00.00.0
08/01/2015>2420Beach Advisory0.00.00.70.00.7
07/04/201564Beach Advisory0.00.00.00.60.6
06/06/201545Acceptable0.10.00.00.00.1
05/02/2015<1Acceptable0.00.00.00.00.0
10/04/2014>2420Beach Advisory0.80.00.00.00.8
09/06/2014260Beach Advisory0.10.00.00.00.1
08/02/2014>2420Beach Advisory0.20.20.00.00.4
07/05/20141300Beach Advisory0.00.11.41.53.0
06/07/201415Acceptable0.00.00.50.20.6
05/03/2014461Beach Advisory0.00.00.31.41.7
10/12/201354Acceptable0.00.00.00.00.0
09/14/201328Acceptable0.00.11.70.01.8
08/10/2013159Beach Advisory0.00.30.10.00.4
07/13/201393Beach Advisory0.00.10.00.20.4
06/15/2013178Beach Advisory0.00.30.70.01.0
05/04/201372Beach Advisory0.00.00.00.00.0
10/06/20121733Beach Advisory0.00.01.20.31.5
09/08/201212Acceptable1.50.00.00.52.0
07/14/20122420Beach Advisory0.10.00.00.00.1
06/02/2012110Beach Advisory0.90.00.00.01.0
05/12/201251Acceptable0.00.00.30.71.0
11/06/201116Acceptable0.00.00.00.00.0
11/04/2010>2420Beach Advisory1.00.00.00.01.0

Entero Count (fecal indicator) and Rainfall Correlation

37 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 trained by Riverkeeper, and processed on the Riverkeeper vessel, according to the 2014 Quality Assurance Project Plan.

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 headwaters site is at the outlet of Echo Lake, which is located just south of the intersection of the Taconic State Parkway with Routes 100 and 133.

Agencies Responsible:

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

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