{"permit":"IA0082325","name":"CITY OF FAIRFIELD","state":"IA","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/IA0082325"},"about":[{"label":"What it is","text":"Water Supply (EPA's industry listing)"},{"label":"Where","text":"Fairfield, Iowa","href":"https://www.openstreetmap.org/?mlat=41.01813&mlon=-91.95521#map=14/41.01813/-91.95521"},{"label":"Last 12 months","text":"Over a limit 4 times, last in May 2026 (Sulfate, total [as SO4])"},{"label":"Permit","text":"In force until Feb 28, 2031"}],"renewal_due":null,"renewal_check":null,"sector":{"state":"IA","sic":"4941","permits":48,"list":"https://passage-data.com/api/v1/permits?state=IA&sic=4941","page":"https://passage-data.com/dmr/s/IA/4941"},"limits_from_version":null,"record":{"last_filed":"2026-09-30","over":4,"over_by":[["Sulfate, total [as SO4]",4]],"window":["2025-10-01","2026-09-30"]},"over_limits":[{"parameter":"Sulfate, total [as 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