I'm not sure about the situation in the States, but here in Ontario harvest is the time of year where wineries are mostly likely to be dinged by the Ministry of Environment for compliance issues.
Here's some handy tips to avoid problems: http://waterandwine.bloomcentre.com/3-steps-to-avoid-wastewater-problems-during-wine-harvest/
Is there anything else you do to make sure harvest doesn't cause any problems?
Here's some handy tips to avoid problems: http://waterandwine.bloomcentre.com/3-steps-to-avoid-wastewater-problems-during-wine-harvest/
Is there anything else you do to make sure harvest doesn't cause any problems?