US lawIllinoisRegulationsTitle 77 — PUBLIC HEALTHCHAPTER I: DEPARTMENT OF PUBLIC HEALTHSUBCHAPTER r: WATER AND SEWAGEPart 890 — ILLINOIS PLUMBING CODESubpart C890.31077 Ill. Adm. Code 890.310TightnessYear: 2026Length: 16 wordsOfficial source Section 890 Section 890.310 Tightness Joints and Connections. Joints and connections shall be gas-tight and water-tight.Next77 Ill. Adm. Code 890.320