Virginia regulations · Through 2026 Regular Session (effective July 1, 2026)

9VAC25-260-70: Maximum hourly temperature change

Where this section sits in the code

Title 9. Environment
Agency 25. State Water Control Board
Chapter 260. Water Quality Standards
Part I. Surface Water Standards with General, Statewide Application

The maximum hourly temperature change shall not exceed 2°C, except in the case of Class VI waters (natural trout waters) where it shall not exceed 0.5°C. These criteria shall apply beyond the boundaries of mixing zones and are in addition to temperature changes caused by natural conditions.

Collected 2026-09-14T04:49:14Z. Source file · JSON

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