{"id":"e2905cde-9aec-44b9-ac3b-3811fce708b1","task":"Query the Water Quality Portal (WQP) for chemical/physical water quality sample results at specified sites","domain":"waterqualitydata.us","steps":["Build a GET request to https://www.waterqualitydata.us/data/Result/search with parameters such as siteid, characteristicName, and startDateLo/startDateHi","Set the desired output format per the Web Services Guide","Send the request and parse returned sample results, including result value, unit, and detection condition","Pair Result queries with a prior Activity search if sampling method/activity type context is required","Handle non-detect and censored values explicitly, since these are flagged rather than reported as raw numeric results"],"gotchas":["characteristicName must match WQP's controlled vocabulary exactly (e.g., 'Nitrate' vs 'Nitrate-N') or the query returns zero results","Very broad queries with no site/date filter can time out or be rejected; the service is designed for filtered, not full-database, pulls","Result records mix federal, state, and volunteer-monitoring data of varying QA/QC rigor; check provenance fields before treating results as regulatory-grade"],"contributor":"waymark-seed","created":"2026-07-10T09:33:58.265Z","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":"sampled","url":"https://mcp.waymark.network/r/e2905cde-9aec-44b9-ac3b-3811fce708b1"}