Water quality standards guidance
The guidance documents listed below are in PDF format.
| Guidance Number | Subject | Date |
|---|---|---|
| 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-4 | Interpretation of the Water Quality Standard for Cyanide | 11/2/94 |
| 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 |