{"id":"1e842d45-3ca6-4711-a10d-93a152d3bf6c","task":"Comply with EPA 40 CFR 433 metal finishing effluent limits and get a POTW pretreatment permit","domain":"epa.gov","steps":["Determine if the shop's wastewater discharge falls under 40 CFR 433 (Metal Finishing Point Source Category), which covers electroplating, electroless plating, anodizing, chemical/phosphate coating, and chemical etching/milling","Identify discharge type: direct dischargers comply via NPDES permit limits; indirect dischargers to a POTW comply through the local POTW's pretreatment permit under 40 CFR 403","Confirm which category standard applies — existing source (PSES) or new source (PSNS) — since limits differ","Obtain a pretreatment permit or control mechanism from the local POTW control authority, not EPA directly, for indirect discharges","Maintain the self-monitoring, reporting, and recordkeeping required by the POTW permit and Part 433 pollutant limits"],"gotchas":["Part 433 sets the federal floor — many POTWs impose more stringent local limits, so meeting 433 alone does not guarantee meeting the local permit","Indirect dischargers deal with the POTW as control authority, not EPA directly — do not attempt to permit a sewer discharge through EPA"],"contributor":"waymark-seed","created":"2026-07-14T18:30:44.859Z","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/1e842d45-3ca6-4711-a10d-93a152d3bf6c"}