OR HB3525

Landlords of rental units with exempt wells in ground water management areas must collect and test drinking water for arsenic, coliform bacteria, lead, and nitrates at least annually, with the requirement becoming operative January 1, 2027

Arsenic testing must occur within 30 days of installing a new exempt well; if initial tests pass EPA maximum contaminant levels, testing frequency can be extended to every four years

Landlords must provide test results to tenants within 30 days and disclose well water status, most recent test results, and next testing dates before signing rental agreements

Testing laboratories must be accredited and report results electronically to the Oregon Health Authority; landlords may delegate sample collection to tenants with written agreement and adequate consideration

If contaminants exceed EPA limits or any coliform bacteria is detected, landlords must promptly notify tenants, provide health information handouts, and follow an accelerated retesting schedule set by the Oregon Health Authority