The purpose of these standards is to define what a given waterbody should be and what is must not be allowed to become because of a discharge.
Below are some important definitions from MA water quality standards (MAWQS).
Class B. These waters are designated as a
habitat for fish, other aquatic life, and
All of the rivers in the upper Taunton including the mainstem which have permitted discharges are defined as class B waters.
More info on Class B definitions..... HERE
Why are the two definitions below from MAWQS important?
Aquatic Life. A native, naturally diverse,
community of aquatic flora and fauna including, but
Biological Integrity. The capability of supporting
and maintaining a balanced, integrated,
Because they tell us that a discharge shall not disrupt or destroy the aquatic integrity of the receiving waters. The use of the words "Native" and "Natural" are important in both definitions.
Taunton River Basin Maps & Classifications.....HERE
Full Text Massachusetts Water Quality Standards......HERE