Urban Waters - Neponset River
Neponset River Watershed Report Cards
This year, EPA will assign report card grades for the Neponset River Watershed for the first time. EPA and the Neponset River Watershed Association will use the Neponset River Report Card to measure and evaluate progress towards meeting the State of Massachusetts bacterial water quality standards for swimming and boating as well as to assess general health of the watershed.
Grading Criteria 2020
The Neponset River Watershed Association (NepRWA), in coordination with EPA, will use an assessment method that encompasses 26 separate stretches of water bodies in the East Branch, Upper, and Lower Neponset sub-watersheds. These grades provide the public with a more accurate assessment of local water quality conditions and greater transparency for all stakeholders. The report card will be based on E. coli data from thirty-one sampling sites, collected monthly by NepRWA volunteers. This grading system measures the percentage of time water quality samples meet state bacterial swimming and boating standards.
Neponset River Watershed Water Quality Grades and Compliance Rates
|Beaver Meadow Brook||B-||71.8%|
|Steep Hill Brook||A-||86.2%|
|Lower Neponset River||B-||74.4%|
|Pine Tree Brook||C||62.1%|
|Turner Pond (Walpole)||A+||98.6%|
|Crack Rock Pond||A+||97.3%|
|Upper Neponset River||B||76.8%|
|Ganawatte Farm Pond||A+||96.8%|
*Figures represent average percentage of time that state bacterial standards are met.
For more information on the Neponset River Watershed and the grading system, please see NepRWA’s Website.