Ill. Admin. Code tit. 77, § 925.ILLUSTRATION A
Backflow Preventer Check Valve For Agricultural Wells
Effective Jan 1, 199215 Ill. Reg. 18227AUTHORITY: Implementing and authorized by the Illinois Water Well Pump Installation Code [415 ILCS 35].DEPARTMENT OF PUBLIC HEALTH
(Source: Added at 15 Ill. Reg. 18227, effective January 1, 1992)