Impaired Waters

Question 1

Categories 1 and 2

Answer 1

Waters for which there is not enough information to determine that water quality standards are attained for all or some of their designated uses

Question 2

Category 3

Answer 2

Waters for which there is not enough information to determine their status

Question 3

Category 4

Answer 3

Waters that are impaired, but have one of several different types of waterbody recovery plans

Question 4

Category 5

Answer 4

Waters that are impaired and do. Ot yet have waterbody recovery plans. Also known as 303(d) list impaired waters.

Question 5

Impairment

Answer 5

A waterbody persistently exceeds state water quality standards, usually determined after two or more years of water quality monitoring.

Question 6

Requirements of category 5 waters

Answer 6

A total maximum daily load, once approved the water moves to category 4a on the next cycle. Or addition, alternative plans that once implemented are expected to improve water quality in a set amount of time. Category 5 waterbodies with alternative recovery plans move to category 4b