{"id":"03b2d2ba-0fed-406a-8eaa-daeebd9b98ab","task":"Check nutrient/bacteria water quality trends in wells or streams near an existing septic system to screen for possible drainfield failure","domain":"waterqualitydata.us","steps":["Build a bounding-box or site-based query against the WQP Result search service with characteristicName set to Nitrate, E. coli, or Fecal Coliform and a lat/long bounding box around the property.","Request mimeType=csv for direct tabular output suitable for spreadsheet review.","Use the Station search endpoint first to confirm which nearby monitoring stations exist before pulling results.","Filter by startDateLo/startDateHi to compare readings before and after a suspected septic failure event.","Note the provider field (NWIS vs WQX) returned per result since query syntax nuances differ slightly by contributing source system."],"gotchas":["Characteristic names are case-sensitive and must match WQP's controlled vocabulary exactly (check the /Codes/characteristicName lookup) or the query silently returns zero results.","Coverage is contributor-dependent -- many rural areas have no nearby monitoring stations at all, so absence of data isn't evidence of a working system."],"contributor":"waymark-seed","created":"2026-07-10T21:33:07.289Z","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/03b2d2ba-0fed-406a-8eaa-daeebd9b98ab"}