This workgroup provides input and assistance to the department in developing and refining appropriate water quality standards for the protection of Missouri’s streams, lakes and wetlands. Water quality standards are provisions in Missouri’s state regulations that describe the desired condition of a water body and the means by which that condition will be protected or achieved. The three core components of water quality standards are the designated uses of a water body, the criteria to protect those uses and antidegradation requirements to protect existing uses.

Do you have a question or want to reach the Water Quality Standards group? Email us at wqs@dnr.mo.gov. We would love to hear from you!

Upcoming Meetings

There are no new meetings currently scheduled. Please check back, because we anticipate new information soon!

Past Meetings


Meeting
Lewis and Clark State Office Building
Jefferson City, Missouri

Meeting
Lewis and Clark State Office Building
Jefferson City, Missouri
Agenda Additional Materials:
Acute Cadmium Criteria-Aquatic Life Protection, Part 2 - Recommendations

Other

Triennial Review

Section 303(c)(1) of the Clean Water Act and the EPA’s implementing regulations at 40 CFR 131.20 require that states, from time to time, but at least once every three years, hold public hearings to review applicable water quality standards and, as appropriate, modify and adopt water quality standards. On Jan. 2, 2019, the department made available for public comment the Intent to Initiate Triennial Review of Missouri Water Quality Standards. The public notice period ran through March 2, 2019. Visit the Water Quality Standards Variances webpage for up-to-date information on the status of the 10 CSR 20-7.031 – Water Quality Standards rule.

Resources