{"id":"S97001737","label":"Wellhead protection","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh97001737","normalized_label":"wellhead protection","broader":["http://id.loc.gov/authorities/subjects/sh85145604"],"aliases":["Aquifer protection","Drinking water protection","Groundwater protection","Source water protection","Wellfield protection"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh97001737","provider":"lcsh","revision":"9f8dc811c389d23d","taxonomy_revision":"f050b5d4780b1289","title":"Wellhead protection","url":"/topics/S97001737","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"54051992695342626","address_version":"morton4x16-v1","coordinates":[0,23,8324,9216],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}