First Flush

Basics

• A term for how at the beginning of Stormwater flow the Pollutants will be at a much higher concentration
• Especially if it is just minor surface contamination, and particulate matter, you can use a First Flush Diverter to seperate the "dirty water" from the clean rainwater
• This is mainly relevant to Rainwater Harvesting, but in certain Municipal Separate Storm Sewer Systems it may be utilized as well (See Stormwater Harvesting )

External Links

• The Wikipedia Page on First Flush