SUBPART A. GENERAL PROVISIONS

§ 303.100. Scope and Applicability

§ 303.101. Multiple Designations

§ 303.102. Rulemaking Required [Repealed]

SUBPART B. NONSPECIFIC WATER USE DESIGNATIONS

§ 303.200. Scope and Applicability

§ 303.201. General Use Waters

§ 303.202. Public and Food Processing Water Supplies

§ 303.203. Underground Waters

§ 303.204. Chicago Area Waterway System and Lower Des Plaines River

§ 303.205. Outstanding Resource Waters

§ 303.206. List of Outstanding Resource Waters

§ 303.220. Primary Contact Recreation Waters

§ 303.225. Incidental Contact Recreation Waters

§ 303.227. Non-Contact Recreation Waters and Non-Recreational Waters

§ 303.230. Upper Dresden Island Pool Aquatic Life Use Waters

§ 303.235. Chicago Area Waterway System Aquatic Life Use A Waters

§ 303.240. Chicago Area Waterway System and Brandon Pool Aquatic Life Use B Waters

SUBPART C. SPECIFIC USE DESIGNATIONS AND SITE SPECIFIC WATER QUALITY STANDARDS

§ 303.300. Scope and Applicability

§ 303.301. Organization

§ 303.311. Ohio River Temperature

§ 303.312. Waters Receiving Fluorspar Mine Drainage [Repealed]

§ 303.321. Wabash River Temperature

§ 303.322. Unnamed Tributary of the Vermilion River [Repealed]

§ 303.323. Sugar Creek and Its Unnamed Tributary

§ 303.326. Unnamed Tributary of Salt Creek, Salt Creek, and Little Wabash River

§ 303.331. Mississippi River North Temperature

§ 303.341. Mississippi River North Central Temperature

§ 303.351. Mississippi River South Central Temperature

§ 303.352. Unnamed Tributary of Wood River Creek

§ 303.353. Schoenberger Creek; Unnamed Tributary of Cahokia Canal

§ 303.361. Mississippi River South Temperature

§ 303.400. Bankline Disposal Along the Illinois Waterway/River

§ 303.410. Chronic Nickel Water Quality Standard for Segment of the Sangamon River

§ 303.430. Unnamed Tributary to Dutch Creek [Repealed]

§ 303.431. Long Point Slough and Its Unnamed Tributary [Repealed]

§ 303.441. Secondary Contact Waters [Repealed]

§ 303.442. Waters Not Designated for Public Water Supply

§ 303.443. Lake Michigan Basin

§ 303.444. Salt Creek, Higgins Creek, West Branch of the DuPage River, Des Plaines River

§ 303.445. Total Dissolved Solids Water Quality Standard for the Lower Des Plaines River [Repealed]

§ 303.446. Boron Water Quality Standard for Segments of the Sangamon River and the Illinois River

§ 303.447. Unnamed Tributary of the South Branch Edwards River and South Branch Edwards River [Repealed]

§ 303.448. Mud Run Creek [Repealed]

§ 303.449. Chicago Sanitary and Ship Canal

SUBPART D. THERMAL DISCHARGES

§ 303.500. Scope and Applicability

§ 303.502. Lake Sangchris Thermal Discharges

§ 303.APPENDIX A. References to Previous Rules [Repealed]

§ 303.APPENDIX B. Sources of Codified Section [Repealed]

SOURCE: Filed with the Secretary of State January 1, 1978; amended at 2 Ill. Reg. 27, p. 221, effective July 5, 1978; amended at 3 Ill. Reg. 20, p. 95, effective May 17, 1979; amended at 5 Ill. Reg. 11592, effective October 19, 1981; codified at 6 Ill. Reg. 7818; amended at 6 Ill. Reg. 11161, effective September 7, 1982; amended at 7 Ill. Reg. 8111, effective June 23, 1983; amended in R87-27 at 12 Ill. Reg. 9917, effective May 27, 1988; amended in R87-2 at 13 Ill. Reg. 15649, effective September 22, 1989; amended in R87-36 at 14 Ill. Reg. 9460, effective May 31, 1990; amended in R86-14 at 14 Ill. Reg. 20724, effective December 18, 1990; amended in R89-14(C) at 16 Ill. Reg. 14684, effective September 10, 1992; amended in R92-17 at 18 Ill. Reg. 2981, effective February 14, 1994; amended in R91-23 at 18 Ill. Reg. 13457, effective August 19, 1994; amended in R93-13 at 19 Ill. Reg. 1310, effective January 30, 1995; amended in R95-14 at 20 Ill. Reg. 3534, effective February 8, 1996; amended in R97-25 at 22 Ill. Reg. 1403, effective December 24, 1997; amended in R01-13 at 26 Ill. Reg. 3517, effective February 22, 2002; amended in R03-11 at 28 Ill. Reg. 3071, effective February 4, 2004; amended in R06-24 at 31 Ill. Reg. 4440, effective February 27, 2007; amended in R09-8 at 33 Ill. Reg. 7903, effective May 29, 2009; amended in R09-11 at 33 Ill. Reg. 12258, effective August 11, 2009; amended in R08-9(A) at 35 Ill. Reg. 15078, effective August 23, 2011; amended in R11-18 at 36 Ill. Reg. 18898, effective December 12, 2012; amended in R08-9(C) at 38 Ill. Reg. 5517, effective February 13, 2014; amended in R08-09(D) at 39 Ill. Reg. 9423, effective July 1, 2015; amended in R14-24 at 42 Ill. Reg. 20947, effective November 19, 2018; amended in R18-23 at 47 Ill. Reg. 4575, effective March 23, 2023.