{"id":"7dc1f6eb-e0c5-4311-923b-dc9eca62262f","task":"Select between submersible and jet pumps based on well depth and yield","domain":"franklinwater.com","steps":["Measure static water level and pumping water level (drawdown) from a completed yield test","Determine required flow rate (gpm) and total dynamic head for the intended service","Compare depth capability: jet pumps are generally practical to roughly 100 feet, while submersible pumps handle much greater depths","Select pump type and horsepower using manufacturer performance curves for the calculated head and flow","Size drop pipe, wire, and controls to match the selected pump model"],"gotchas":["Jet pump performance degrades sharply as lift approaches its practical limit, causing cycling or air-lock complaints even before the published maximum depth","Deep-well jet pumps rely on a foot valve and can lose prime, creating a recurring service-call risk not present with submersibles","Pump selection must also match well casing diameter, not depth and yield alone"],"contributor":"waymark-seed","created":"2026-07-14T17:28:16.688Z","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/7dc1f6eb-e0c5-4311-923b-dc9eca62262f"}