{"query":{"parameter":"2 3 7 8 tetrachlorodibenzo p dioxin","place":"US-OH","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-OH","US"],"parameter_keys":["cas:1746-01-6","name:2, 3, 7, 8-tetrachlorodibenzo-p-dioxin","name:2,3,7,8−tetrachlorodibenzo−p−dioxin"],"names_matched":[["2 3 7 8 tetrachlorodibenzo p dioxin","cas:1746-01-6"],["2 3 7 8 tetrachlorodibenzo p dioxin","name:2, 3, 7, 8-tetrachlorodibenzo-p-dioxin"],["2 3 7 8 tetrachlorodibenzo p dioxin","name:2,3,7,8−tetrachlorodibenzo−p−dioxin"]],"match":"exact","order":"The place's own instruments first, then each place above it, each in its register's order; rows for a marine receiving water after the rest, as none of the place's own rows names a marine, salt, estuarine, coastal or ocean 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agricultural supply (33-3), fish consumption (34-1), aesthetic (37-1) and Ohio river (32-1/32-2) criteria","issuer":"State of Ohio, Environmental Protection Agency","edition":"OAC 3745-1-01 to -44 and -50 to -54, effective March 16, 2026, as US EPA posts it in effect for CWA purposes (cover letter March 25, 2026: EPA disapproved, April 27, 2021, 44 lake Erie public water supply criteria of Table 33-1)","source_url":"https://www.epa.gov/sites/default/files/2015-09/documents/oh_34751_1_to_40.pdf","source_sha256":"129b8170e3fe705fd7b0be22d6ca7eb6bf37bfc003df0348bb42b8e67c60f9d0","fetched_at":"2026-10-14","section":"OAC 3745-1-33 Table 33-1","page":460,"quote":"2,3,7,8-Tetrachlorodibenzo-p-dioxin5 T µg/l 5.0*10-8 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agricultural supply (33-3), fish consumption (34-1), aesthetic (37-1) and Ohio river (32-1/32-2) criteria","issuer":"State of Ohio, Environmental Protection Agency","edition":"OAC 3745-1-01 to -44 and -50 to -54, effective March 16, 2026, as US EPA posts it in effect for CWA purposes (cover letter March 25, 2026: EPA disapproved, April 27, 2021, 44 lake Erie public water supply criteria of Table 33-1)","source_url":"https://www.epa.gov/sites/default/files/2015-09/documents/oh_34751_1_to_40.pdf","source_sha256":"129b8170e3fe705fd7b0be22d6ca7eb6bf37bfc003df0348bb42b8e67c60f9d0","fetched_at":"2026-10-14","section":"OAC 3745-1-34 Table 34-1","page":467,"quote":"2,3,7,8-Tetrachlorodibenzo-p-dioxin5 T pg/l 0.051 0.0086"}},{"id":"7c5cd7a3f2f5689b","parameter":"2,3,7,8-Tetrachlorodibenzo-p-dioxin","value":"0.0086","value_num":0.0086,"unit":"pg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:1746-01-6","place":["US-OH"],"conditions":["receiving_water is freshwater","water bodies in the lake Erie drainage basin"],"cite":{"instrument":"us_oh_wqs","title":"Ohio Administrative Code Chapter 3745-1 Water Quality Standards: statewide aquatic life (Table 35-1, hardness and pH equations 35-9/35-10), wildlife (35-12), public water supply (33-1), agricultural supply (33-3), fish consumption (34-1), aesthetic (37-1) and Ohio river (32-1/32-2) criteria","issuer":"State of Ohio, Environmental Protection Agency","edition":"OAC 3745-1-01 to -44 and -50 to -54, effective March 16, 2026, as US EPA posts it in effect for CWA purposes (cover letter March 25, 2026: EPA disapproved, April 27, 2021, 44 lake Erie public water supply criteria of Table 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water supply (33-1), agricultural supply (33-3), fish consumption (34-1), aesthetic (37-1) and Ohio river (32-1/32-2) criteria","issuer":"State of Ohio, Environmental Protection Agency","edition":"OAC 3745-1-01 to -44 and -50 to -54, effective March 16, 2026, as US EPA posts it in effect for CWA purposes (cover letter March 25, 2026: EPA disapproved, April 27, 2021, 44 lake Erie public water supply criteria of Table 33-1)","source_url":"https://www.epa.gov/sites/default/files/2015-09/documents/oh_34751_1_to_40.pdf","source_sha256":"129b8170e3fe705fd7b0be22d6ca7eb6bf37bfc003df0348bb42b8e67c60f9d0","fetched_at":"2026-10-14","section":"OAC 3745-1-32 Table 32-2","page":453,"quote":"2, 3, 7, T µg/l 5.0*10-8 5.0*10-8 8-Tetrachlorodibenzo-p-dioxin5"}},{"id":"3051e8a0d756bd37","parameter":"2, 3, 7, 8-Tetrachlorodibenzo-p-dioxin","value":"5.0*10-8","value_num":5e-8,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:2, 3, 7, 8-tetrachlorodibenzo-p-dioxin","place":["US-OH"],"conditions":["receiving_water is freshwater","the Ohio river mainstem (OAC 3745-1-32)","the Ohio river at all other locations (Table 32-2 note 3)"],"cite":{"instrument":"us_oh_wqs","title":"Ohio Administrative Code Chapter 3745-1 Water Quality Standards: statewide aquatic life (Table 35-1, hardness and pH equations 35-9/35-10), wildlife (35-12), public water supply (33-1), agricultural supply (33-3), fish consumption (34-1), aesthetic (37-1) and Ohio river (32-1/32-2) criteria","issuer":"State of Ohio, Environmental Protection Agency","edition":"OAC 3745-1-01 to -44 and -50 to -54, effective March 16, 2026, as US EPA posts it in effect for CWA purposes (cover letter March 25, 2026: EPA disapproved, April 27, 2021, 44 lake Erie public water supply criteria of Table 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