NRWA Historic Water Monitoring Data

The following historic NRWA water quality data files may be viewed online:

2022 Water Quality Data
2021 Water Quality Data
2020 Water Quality Data
2019 Water Quality Data
2018 Water Quality Data
2017 Water Quality Data
2016 Water Quality Data
2015 Water Quality Data
2014 Water Quality Data
2013 Water Quality Data
2012 Water Quality Data
2011 Water Quality Data
2010 Water Quality Data

2009 Water Quality Data
2008 Water Quality Data
2007 Water Quality Data
2007 Lancaster Nutrient Data
2006 Water Quality Data 

Water quality data for years prior to 2006 is available upon request. Please contact Jessica Veysey Powell, NRWA Watershed Scientist, at (978) 448-0299, or email This email address is being protected from spambots. You need JavaScript enabled to view it..

NOTE: Not all data have been quality control checked.