US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER II: ENVIRONMENTAL PROTECTION AGENCYPart 325 — PERMIT FEES FOR NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM PERMITS AND DOMESTIC SEWAGE SLUDGE GENERATOR OR SLUDGE USER PERMITSSubpart D325.42535 Ill. Adm. Code 325.425Due DatesYear: 2026Length: 30 wordsOfficial source Section 325.425 Due Dates All annual fees due under this Part must be received by the due date indicated in the annual fee notice to avoid accrual of interest charges.Previous35 Ill. Adm. Code 325.420Next35 Ill. Adm. Code 325.430