{"query":{"parameter":"hexachlorophene","place":"US-TX","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-TX","US"],"parameter_keys":["cas:70-30-4"],"names_matched":[["hexachlorophene","cas:70-30-4"]],"match":"exact","order":"The place's own instruments first, then each place above it, each in its register's order"},"total":6,"offset":0,"returned":6,"next_offset":null,"rows":[{"id":"3c154f9cd978e391","parameter":"Hexachlorophene","value":"2.05","value_num":2.05,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:70-30-4","place":["US-TX"],"conditions":["surface water designated or used for public drinking water supply, or a sole-source surface drinking water supply (30 TAC §307.6(d)(2)(A), Column A)"],"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(d) Table 2","page":50,"quote":null}},{"id":"290b9a5ac235c4f4","parameter":"Hexachlorophene","value":"2.90","value_num":2.9,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:70-30-4","place":["US-TX"],"conditions":["surface water with a sustainable fishery not designated or used for public water supply (30 TAC §307.6(d)(2)(B), Column B); in an incidental fishery the criterion is ten times this value (30 TAC §307.6(d)(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(d) Table 2","page":50,"quote":null}},{"id":"262517cb2f1b2e80","parameter":"Hexachlorophene","value":"19","value_num":19,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"national","parameter_key":"cas:70-30-4","place":["US"],"conditions":["Resident Soil (mg/kg)"],"cite":{"instrument":"us_rsl_soil","title":"US EPA — Regional Screening Levels (RSLs), Summary Table (TR=1E-06, THQ=1.0), November 2024 — Soil","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"November 2024","source_url":"https://semspub.epa.gov/src/document/HQ/405270","source_sha256":"0160dc81b4f55d738a354a74de92488f149946ebfa7c6a6c64592f45348043d7","fetched_at":"2026-09-19","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":null,"page":null,"quote":null,"table":"sols","column":"residentiel"}},{"id":"44f4622e760507d8","parameter":"Hexachlorophene","value":"250","value_num":250,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"national","parameter_key":"cas:70-30-4","place":["US"],"conditions":["Industrial Soil (mg/kg)"],"cite":{"instrument":"us_rsl_soil","title":"US EPA — Regional Screening Levels (RSLs), Summary Table (TR=1E-06, THQ=1.0), November 2024 — Soil","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"November 2024","source_url":"https://semspub.epa.gov/src/document/HQ/405270","source_sha256":"0160dc81b4f55d738a354a74de92488f149946ebfa7c6a6c64592f45348043d7","fetched_at":"2026-09-19","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":null,"page":null,"quote":null,"table":"sols","column":"industriel"}},{"id":"3c1cb8fd4ca07d81","parameter":"Hexachlorophene","value":"8","value_num":8,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"national","parameter_key":"cas:70-30-4","place":["US"],"conditions":["Protection of Groundwater SSLs: Risk-based SSL (mg/kg); SSL values are based on DAF=1"],"cite":{"instrument":"us_rsl_soil","title":"US EPA — Regional Screening Levels (RSLs), Summary Table (TR=1E-06, THQ=1.0), November 2024 — Soil","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"November 2024","source_url":"https://semspub.epa.gov/src/document/HQ/405270","source_sha256":"0160dc81b4f55d738a354a74de92488f149946ebfa7c6a6c64592f45348043d7","fetched_at":"2026-09-19","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":null,"page":null,"quote":null,"table":"ssl","column":"risque"}},{"id":"1c9114cd68fd13be","parameter":"Hexachlorophene","value":"6","value_num":6,"unit":"µg/L","direction":"max","kind":"guideline","medium":"drinking_water","level":"national","parameter_key":"cas:70-30-4","place":["US"],"conditions":["Tap Water (ug/L): Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2024"],"cite":{"instrument":"us_rsl_tapwater","title":"US EPA — Regional Screening Levels (RSLs), Summary Table (TR=1E-06, THQ=1.0), November 2024 — Tap Water","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"November 2024","source_url":"https://semspub.epa.gov/src/document/HQ/405270","source_sha256":"0160dc81b4f55d738a354a74de92488f149946ebfa7c6a6c64592f45348043d7","fetched_at":"2026-09-19","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":null,"page":null,"quote":null,"table":"eau","column":"eau_robinet"}}],"next":[{"tool":"check_values","says":"Has your user measured this? check_values sets each of their results beside every row held here, with a verdict and the row's cite.","arguments":{"place":"US-TX"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"hexachlorophene\", value, unit}, ...], any other parameters too."},"post":"/api/v1/check"},{"tool":"read_certificate","says":"Has your user a laboratory certificate? read_certificate reads every row it prints, each with its page, and checks them against these limits.","arguments":{"place":"US-TX"},"needs":{"content_base64":"The laboratory's certificate (PDF) or its XLSX, XLS or CSV export, as base64; or file_url, a public https address of it."},"post":"/api/v1/certificate"}]}