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(dissolved)","value":"33","value_num":33,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:7440-50-8","place":["US-IN"],"conditions":["receiving_water is freshwater","waters of the state outside the Great Lakes system (327 IAC 2-1: 'Water Quality Standards Applicable to All State Waters Except Waters of the State Within the Great Lakes System')","hardness 200 mg/l CaCO3 (the table's row)"],"cite":{"instrument":"us_in_wqs","title":"Indiana 327 IAC 2 Water Quality Standards: Rule 1 (waters outside the Great Lakes system) and Rule 1.5 (the Great Lakes system) aquatic life, human health, wildlife, chloride, sulfate and use criteria","issuer":"State of Indiana, Environmental Rules Board (Department of Environmental Management)","edition":"327 IAC 2 (Article 2) effective October 18, 2023, as US EPA posts it in effect for CWA purposes (cover November 28, 2023: only the variance provision 327 IAC 2-1.5-17(b) 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