From its origin to Shrwati dam, Kundali River waters are rated as  A-1 class, and from Vadivale dam to its confluence with Indryani River its waters are rated as A-B class.
This passage describes the different water quality classifications for the Kundali River in various sections. The river's source at Shrwati Dam is of high quality (A-1), while its flow downstream to Vadivale Dam and then to the Indryani River has a lower quality (A-B).