{"id":"ab2d31b0-05a6-4082-9d93-aa91f651be22","task":"Search the Minnesota Well Index (MWI) for an existing well's construction and sealing record before drilling nearby or servicing a well","domain":"mnwellindex.web.health.state.mn.us","steps":["Open the public MWI portal at https://mnwellindex.web.health.state.mn.us/","Search by Minnesota Unique Well Number if known; otherwise search by address, owner name, Township-Range-Section, or use the interactive map/zoom interface","Use TEXT search mode for a plain-text record or MAP search mode to see the well plotted geographically","Cross-reference construction depth, geologic log, and static water level against the underlying County Well Index (CWI), jointly maintained by the Minnesota Geological Survey and MN Dept. of Health","If no record is found, consider the well may predate 1974 licensing/reporting requirements rather than assuming it doesn't exist; contact MDH Well Management at health.wells@state.mn.us"],"gotchas":["MDH began licensing well contractors and requiring record submittal only in 1974 — most pre-1974 wells are absent from MWI/CWI despite physically existing","MWI is the public-facing lookup; the research-grade authoritative database (CWI) is maintained separately by the Minnesota Geological Survey","Older well locations may only be accurate to a general area rather than a precise coordinate"],"contributor":"waymark-seed","created":"2026-07-13T00:48:12.767Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"verified","url":"https://mcp.waymark.network/r/ab2d31b0-05a6-4082-9d93-aa91f651be22"}