Blog posts of '2026' 'March'

Groundwater is one of the most important natural resources for drinking water, industrial use, agriculture, and environmental health. Yet it is also highly vulnerable to contamination from sediment infiltration, poor well construction, improper maintenance, chemical spills, and inadequate sampling practices.

Wisconsin’s new Vapor Intrusion Guidance (RR-800) is more than a state update; it is a signal that vapor intrusion programs are becoming more detailed, more building-specific, and more proactive. The guidance applies to sites where contaminated vapor has migrated – or could migrate – into current or future buildings, and it emphasizes investigation, immediate response, mitigation, and long-term stewardship as part of the cleanup process.