During the late winter and early spring of 2010, the Center for the Environment, with assistance from th Israel’s River Volunteer Advisory Group ,tested the Israel’s River in Jefferson and Lancaster, NH for chloride. While chloride occurs naturally in our water sources, the N.H. Department of Environmental Services reports that testing over the last 25 years has indicated that chloride levels have increased steadily and substantially in some of New Hampshire’s freshwater streams, rivers, lakes, ponds, wetlands, and groundwater. It is believed that road salt is the source of this increase level of chloride.
On May 18, 2010, Mark Green and Aaron Johnson from the Center for the Environment present the results of the recent testing of the Israel’s River at a meeting of the Jefferson Conservation Commission. Samples were taken from the river at various times and a sensor was also put into the river in Lancaster. The sensor provided data every 15 minutes and could be compared to the less frequent physical samples that were analyzed at the Center’s Environmental Research Laboratory.
The results indicate that the Israel’s River has low levels of chloride, but Center hopes to continue testing the river in the future to better understand the dynamics of chloride.