The guidance documents listed below are in PDF format.
| 04-2021 |
Guidance for Exceptional State Waters Designations in Antidegradation Policy Section of Virginia Water Quality Standards Regulation (9 VAC 25-260-30.A.3) |
11/15/04 |
| WQS-5 |
Guidance of Application of Public Water Supply Designations |
11/4/94 |
| WQS-3 |
Interpretation of Fecal Coliform Bacteria and Mixing Zones |
4/20/93 |
| WQS-2 |
Water Quality Standards Interpretation of Biologically Based Flows, Low Flow Application and Mixing Zones |
11/2/92 |
| WQS-1 |
New Standards - Interpretations |
2/24/92 |