SUBPART A. GENERAL WATER QUALITY PROVISIONS

§ 302.100. Definitions

§ 302.101. Scope and Applicability

§ 302.102. Allowed Mixing, Mixing Zones, and ZIDs

§ 302.103. Stream Flows

§ 302.104. Main River Temperatures

§ 302.105. Antidegradation

SUBPART B. GENERAL USE WATER QUALITY STANDARDS

§ 302.201. Scope and Applicability

§ 302.202. Purpose

§ 302.203. Offensive Conditions

§ 302.204. pH

§ 302.205. Phosphorus

§ 302.206. Dissolved Oxygen

§ 302.207. Radioactivity

§ 302.208. Numeric Standards for Chemical Constituents

§ 302.209. Fecal Coliform

§ 302.210. Other Toxic Substances

§ 302.211. Temperature

§ 302.212. Total Ammonia Nitrogen

§ 302.213. Effluent Modified Waters (Ammonia) [Repealed]

SUBPART C. PUBLIC AND FOOD PROCESSING WATER SUPPLY STANDARDS

§ 302.301. Scope and Applicability

§ 302.302. Algicide Permits

§ 302.303. Finished Water Standards

§ 302.304. Chemical Constituents

§ 302.305. Other Contaminants

§ 302.306. Fecal Coliform

§ 302.307. Radium 226 and 228

SUBPART D. CHICAGO AREA WATERWAY SYSTEM AND LOWER DES PLAINES RIVER WATER QUALITY STANDARDS AND INDIGENOUS AQUATIC LIFE STANDARDS

§ 302.401. Scope and Applicability

§ 302.402. Purpose

§ 302.403. Unnatural Sludge

§ 302.404. pH

§ 302.405. Dissolved Oxygen

§ 302.406. Fecal Coliform [Repealed]

§ 302.407. Chemical Constituents

§ 302.408. Temperature

§ 302.409. Cyanide for the South Fork of the South Branch of the Chicago River (Bubbly Creek)

§ 302.410. Other Toxic Substances

§ 302.412. Total Ammonia Nitrogen

SUBPART E. LAKE MICHIGAN BASIN WATER QUALITY STANDARDS

§ 302.501. Scope, Applicability, and Definitions

§ 302.502. Dissolved Oxygen

§ 302.503. pH

§ 302.504. Chemical Constituents

§ 302.505. Fecal Coliform

§ 302.506. Temperature

§ 302.507. Thermal Standards for Existing Sources on January 1, 1971

§ 302.508. Thermal Standards for Sources Under Construction But Not In Operation on January 1, 1971

§ 302.509. Other Sources

§ 302.510. Incorporations by Reference [Repealed]

§ 302.515. Offensive Conditions

§ 302.520. Regulation and Designation of Bioaccumulative Chemicals of Concern (BCCs)

§ 302.521. Supplemental Antidegradation Provisions for BCCs

§ 302.525. Radioactivity

§ 302.530. Supplemental Mixing Provisions for Bioaccumulative Chemicals of Concern (BCCs)

§ 302.535. Ammonia Nitrogen

§ 302.540. Other Toxic Substances

§ 302.545. Data Requirements

§ 302.550. Analytical Testing

§ 302.553. Determining the Lake Michigan Aquatic Toxicity Criteria or Values - General Procedures

§ 302.555. Determining the Tier I Lake Michigan Acute Aquatic Toxicity Criterion (LMAATC): Independent of Water Chemistry

§ 302.560. Determining the Tier I Lake Michigan Basin Acute Aquatic Life Toxicity Criterion (LMAATC): Dependent on Water Chemistry

§ 302.563. Determining the Tier II Lake Michigan Basin Acute Aquatic Life Toxicity Value (LMAATV)

§ 302.565. Determining the Lake Michigan Basin Chronic Aquatic Life Toxicity Criterion (LMCATC) or the Lake Michigan Basin Chronic Aquatic Life Toxicity Value (LMCATV)

§ 302.570. Procedures for Deriving Bioaccumulation Factors for the Lake Michigan Basin

§ 302.575. Procedures for Deriving Tier I Water Quality Criteria and Values in the Lake Michigan Basin to Protect Wildlife

§ 302.580. Procedures for Deriving Water Quality Criteria and Values in the Lake Michigan Basin to Protect Human Health - General

§ 302.585. Procedures for Determining the Lake Michigan Basin Human Health Threshold Criterion (LMHHTC) and the Lake Michigan Basin Human Health Threshold Value (LMHHTV)

§ 302.590. Procedures for Determining the Lake Michigan Basin Human Health Nonthreshold Criterion (LMHHNC) or the Lake Michigan Basin Human Health Nonthreshold Value (LMHHNV)

§ 302.595. Listing of Bioaccumulative Chemicals of Concern, Derived Criteria and Values

SUBPART F. PROCEDURES FOR DETERMINING WATER QUALITY CRITERIA

§ 302.601. Scope and Applicability

§ 302.603. Definitions

§ 302.604. Mathematical Abbreviations

§ 302.606. Data Requirements

§ 302.612. Determining the Acute Aquatic Toxicity Criterion for an Individual Substance - General Procedures

§ 302.615. Determining the Acute Aquatic Toxicity Criterion – Toxicity Independent of Water Chemistry

§ 302.618. Determining the Acute Aquatic Toxicity Criterion - Toxicity Dependent on Water Chemistry

§ 302.621. Determining the Acute Aquatic Toxicity Criterion - Procedure for Combinations of Substances

§ 302.627. Determining the Chronic Aquatic Toxicity Criterion for an Individual Substance - General Procedures

§ 302.630. Determining the Chronic Aquatic Toxicity Criterion - Procedure for Combinations of Substances

§ 302.633. The Wild and Domestic Animal Protection Criterion

§ 302.642. The Human Threshold Criterion

§ 302.645. Determining the Acceptable Daily Intake

§ 302.648. Determining the Human Threshold Criterion

§ 302.651. The Human Nonthreshold Criterion

§ 302.654. Determining the Risk Associated Intake

§ 302.657. Determining the Human Nonthreshold Criterion

§ 302.658. Stream Flow for Application of Human Nonthreshold Criterion

§ 302.660. Bioconcentration Factor

§ 302.663. Determination of Bioconcentration Factors

§ 302.666. Utilizing the Bioconcentration Factor

§ 302.669. Listing of Derived Criteria

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

§ 302.APPENDIX B. Sources of Codified Sections [Repealed]

Section 302.APPENDIX C. Maximum total ammonia nitrogen concentrations allowable for certain combinations of pH and temperature

§ 302.TABLE A. pH-Dependent Values of the AS (Acute Standard)

§ 302.TABLE B. Temperature and pH-Dependent Values of the CS (Chronic Standard) for Fish Early Life Stages Absent

§ 302.TABLE C. Temperature and pH-Dependent Values of the CS (Chronic Standard) for Fish Early Life Stages Present

§ 302.APPENDIX D. Section 302.206(d): Stream Segments for Enhanced Dissolved Oxygen Protection

SOURCE: Filed with the Secretary of State January 1, 1978; amended at 2 Ill. Reg. 44, p. 151, effective November 2, 1978; amended at 3 Ill. Reg. 20, p. 95, effective May 17, 1979; amended at 3 Ill. Reg. 25, p. 190, effective June 21, 1979; codified at 6 Ill. Reg. 7818; amended at 6 Ill. Reg. 11161, effective September 7, 1982; amended at 6 Ill. Reg. 13750, effective October 26, 1982; amended at 8 Ill. Reg. 1629, effective January 18, 1984; peremptory amendments at 10 Ill. Reg. 461, effective December 23, 1985; amended at R87-27 at 12 Ill. Reg. 9911, effective May 27, 1988; amended at R85-29 at 12 Ill. Reg. 12082, effective July 11, 1988; amended in R88-1 at 13 Ill. Reg. 5998, effective April 18, 1989; amended in R88-21(A) at 14 Ill. Reg. 2899, effective February 13, 1990; amended in R88-21(B) at 14 Ill. Reg. 11974, effective July 9, 1990; amended in R94-1(A) at 20 Ill. Reg. 7682, effective May 24, 1996; amended in R94-1(B) at 21 Ill. Reg. 370, effective December 23, 1996; expedited correction at 21 Ill. Reg. 6273, effective December 23, 1996; amended in R97-25 at 22 Ill. Reg. 1356, effective December 24, 1997; amended in R99-8 at 23 Ill. Reg. 11249, effective August 26, 1999; amended in R01-13 at 26 Ill. Reg. 3505, effective February 22, 2002; amended in R02-19 at 26 Ill. Reg. 16931, effective November 8, 2002; amended in R02-11 at 27 Ill. Reg. 166, effective December 20, 2002; amended in R04-21 at 30 Ill. Reg. 4919, effective March 1, 2006; amended in R04-25 at 32 Ill. Reg. 2254, effective January 28, 2008; amended in R07-9 at 32 Ill. Reg. 14978, effective September 8, 2008; amended in R11-18 at 36 Ill. Reg. 18871, effective December 12, 2012; amended in R11-18(B) at 37 Ill. Reg. 7493, effective May 16, 2013; amended in R08-09(D) at 39 Ill. Reg. 9388, effective July 1, 2015; amended in R18-23 at 47 Ill. Reg. 4437, effective March 23, 2023.