US lawIllinoisRegulationsTitle 35 — ENVIRONMENTAL PROTECTIONCHAPTER I: POLLUTION CONTROL BOARDPart 301 — INTRODUCTION301.44335 Ill. Adm. Code 301.443Whole Effluent ToxicityLast amended: 2023Year: 2026Length: 26 wordsOfficial source Section 301 Section 301.443 Whole Effluent Toxicity "Whole Effluent Toxicity" or "WET" means a test procedure that determines the effect of an effluent on aquatic life.Previous35 Ill. Adm. Code 301.442Next35 Ill. Adm. Code 301.APPENDIX