{"query":{"parameter":"tributyltin","place":"US-TX","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-TX","US"],"parameter_keys":["cas:36643-28-4","cas:688-73-3","cas:56-35-9","name:organotins - tributyltin","name:trialkyltin compounds","name:tributyltin compounds","cas:56573-85-4","name:tributyltin tbt"],"names_matched":[["tributyltin","cas:36643-28-4"],["tributyltin","cas:688-73-3"],["bis tributyltin oxide","cas:56-35-9"],["organotins tributyltin","name:organotins - tributyltin"],["trialkyltin compounds as tributyltin","name:trialkyltin compounds"],["tributyltin compounds","name:tributyltin compounds"],["tributyltin oxide","cas:56-35-9"],["tributyltin tbt","cas:56-35-9"],["tributyltin tbt","cas:56573-85-4"],["tributyltin tbt","name:tributyltin tbt"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order"},"total":19,"offset":0,"returned":19,"next_offset":null,"rows":[{"id":"4594af2661cda585","parameter":"Tributyltin (TBT)","value":"0.13","value_num":0.13,"unit":"µg/L","statistic":"daily_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:688-73-3","place":["US-TX"],"conditions":["receiving_water is freshwater","water in the state; 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acute criteria outside zones of initial dilution, chronic criteria in water with an aquatic life use of limited or greater, outside mixing zones and above critical low flow (30 TAC §307.6(c)(6))"],"cite":{"instrument":"us_tx_wqs","title":"Texas Surface Water Quality Standards, 30 TAC Chapter 307 (2022): §307.6 Table 1 aquatic life (freshwater and saltwater acute/chronic) and Table 2 human health; §307.7 Table 3 dissolved oxygen","issuer":"State of Texas, Texas Commission on Environmental Quality (TCEQ)","edition":"2022 Texas Surface Water Quality Standards (Rule Project No. 2020-014-307-OW), effective June 27, 2025, as US EPA posts them (cover dated July 1, 2025) with what EPA has approved for CWA purposes","source_url":"https://www.epa.gov/system/files/documents/2023-12/txwqs-2022.pdf","source_sha256":"88ff93dcfb277feec248541b2aa9a0f01cd3a747cda6e03d958344ee4a34ce5e","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"30 TAC §307.6(c) Table 1","page":40,"quote":null}},{"id":"f93d1640cccdd299","parameter":"Tributyltin (TBT)","value":"0.0074","value_num":0.0074,"unit":"µg/L","statistic":"weekly_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:688-73-3","place":["US-TX"],"conditions":["receiving_water is marine","water in the state; acute criteria outside zones of initial dilution, chronic criteria in water with an aquatic life use of limited or greater, outside mixing zones and above critical low flow (30 TAC §307.6(c)(6))"],"cite":{"instrument":"us_tx_wqs","title":"Texas Surface Water Quality Standards, 30 TAC Chapter 307 (2022): §307.6 Table 1 aquatic life (freshwater and saltwater acute/chronic) and Table 2 human health; §307.7 Table 3 dissolved oxygen","issuer":"State of Texas, Texas Commission on Environmental Quality (TCEQ)","edition":"2022 Texas Surface Water Quality Standards (Rule Project No. 2020-014-307-OW), effective June 27, 2025, as US EPA posts them (cover dated July 1, 2025) with what EPA has approved for CWA purposes","source_url":"https://www.epa.gov/system/files/documents/2023-12/txwqs-2022.pdf","source_sha256":"88ff93dcfb277feec248541b2aa9a0f01cd3a747cda6e03d958344ee4a34ce5e","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"30 TAC §307.6(c) Table 1","page":40,"quote":null}},{"id":"e48c179a2b0133aa","parameter":"Tributyltin (TBT)","value":"0.46","value_num":0.46,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:688-73-3","place":["US"],"conditions":["EPA's recommendation under Clean Water Act § 304(a): 'State and Tribal governments may use these criteria or use them as guidance in developing their own' — it binds a water once the state adopts it for the water's designated use","receiving_water is freshwater","Freshwater CMC (acute): criterion maximum concentration, acute"],"cite":{"instrument":"us_nrwqc_aquatic","title":"EPA National Recommended Water Quality Criteria — Aquatic Life Criteria Table (freshwater and saltwater CMC/CCC)","issuer":"U.S. Environmental Protection Agency","edition":"EPA web table, last updated on June 9, 2026 (fetched 2026-10-09); 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each criterion carries its publication year","source_url":"https://www.epa.gov/wqc/national-recommended-water-quality-criteria-aquatic-life-criteria-table","source_sha256":"be6b429558db9852c3456eb22c17046aa1a3335ee89e702e8afb793f9b5b25ec","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"National Recommended Aquatic Life Criteria table","page":null,"quote":"Tributyltin (TBT) — 0.46 0.072 0.42 0.0074 2004"}},{"id":"2b48dc38984d507f","parameter":"Tributyltin (TBT)","value":"0.42","value_num":0.42,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:688-73-3","place":["US"],"conditions":["EPA's recommendation under Clean Water Act § 304(a): 'State and Tribal governments may use these criteria or use them as guidance in developing their own' — it binds a water once the state adopts it for the water's designated use","receiving_water is marine","Saltwater CMC (acute): criterion maximum concentration, acute"],"cite":{"instrument":"us_nrwqc_aquatic","title":"EPA National Recommended Water Quality Criteria — Aquatic Life Criteria Table (freshwater and saltwater CMC/CCC)","issuer":"U.S. Environmental Protection Agency","edition":"EPA web table, last updated on June 9, 2026 (fetched 2026-10-09); 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