In Tempe, herbicide exposure can come from more than one routine pattern:
- Landscaping and grounds work: Crew members who mix, spray, or trim treated areas may be exposed through residue on equipment, clothing, or drift.
- Residential and HOAs: In many communities, contract landscaping companies apply weed control in shared courtyards, sidewalks, and retention areas.
- Secondhand exposure at home: If a worker brings treated workwear home, residue can transfer to living spaces.
- Service companies and maintenance teams: Those who handle irrigation systems, property upkeep, or seasonal weed control can be exposed during application and cleanup.
- Common outdoor spaces near events and campuses: People can be exposed when treatments occur before or during high-traffic periods.
Because Tempe is an urban-suburban environment with dense neighborhoods and frequent landscaping activity, the “when and where” of exposure matters. Many claims hinge on reconstructing a timeline: what was applied, where it was applied, and who was present.


