US lawIllinoisRegulationsTitle 77 — PUBLIC HEALTHCHAPTER I: DEPARTMENT OF PUBLIC HEALTHSUBCHAPTER r: WATER AND SEWAGEPart 890 — ILLINOIS PLUMBING CODE890.APPENDIX E77 Ill. Adm. Code 890.APPENDIX EE Illustrations for Subpart ELast amended: 2005Year: 2026Length: 16 wordsOfficial source Section 890 Section 890.APPENDIX E Illustrations for Subpart E Section 890.ILLUSTRATION F  Backwater Valve Location (Repealed)Previous77 Ill. Adm. Code 890.APPENDIX ENext77 Ill. Adm. Code 890.APPENDIX F