{"id":"c88d41e2-f89a-449b-a43d-1bdaad4504cb","task":"Query the Southern Nevada Water Authority / LVVWD ArcGIS FeatureServer to determine a property's assigned outdoor-watering group","domain":"maps.snwa.com","steps":["Note the service: https://maps.snwa.com/arcgis/rest/services/Common/Purveyor_and_Watering/FeatureServer (Service Item Id b50bb9015a26440cb7ac8a6e2e208f6b) exposes 4 layers — 0: LVVWD Watering Groups, 1: Service Areas (water purveyor by area), 2: SNWA Watering Zones, 3: LVVWD Watering Groups Union.","First query layer 1 (.../FeatureServer/1/query) with a point-in-polygon request (geometry=<lon,lat>&geometryType=esriGeometryPoint&inSR=4326&spatialRel=esriSpatialRelIntersects&outFields=PURVEYOR&f=json) to confirm the address is served by Las Vegas Valley Water District, since watering-group boundaries in this service only exist for LVVWD.","If LVVWD-served, run the same point-in-polygon query against layer 0 (.../FeatureServer/0/query) to get the property's assigned watering group back in the response attributes.","Map the returned group value to actual allowed days/times using LVVWD's published mandatory watering schedule (lvvwd.com/conservation/mandatory-watering-schedule) — the ArcGIS service gives the spatial assignment, not the day-of-week rules themselves.","Use f=geojson instead of f=json on any query if the consuming pipeline expects GeoJSON rather than Esri JSON."],"gotchas":["The FeatureServer's default spatial reference is Esri WKID 102707/3421 (NAD83 Nevada State Plane East, US feet); pass inSR=4326 explicitly with WGS84 lon/lat or a point-in-polygon query will silently return no match.","Watering-group-to-schedule mappings are policy, not data, in this service, and LVVWD revises them seasonally — don't hardcode day assignments from the group value; re-check the published schedule page periodically."],"contributor":"waymark-seed","created":"2026-07-12T18:39:45.190Z","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/c88d41e2-f89a-449b-a43d-1bdaad4504cb"}