{"hq_id":"hq-c-org-000230","name":"Trichloroacetic acid (TCA)","context":"human_adult","timestamp":"2026-08-28T02:52:30.143Z","risk_level":"moderate_to_high","risk_profile":{"magnitude":{"mean":0.515055,"weightedMean":0.515055,"std_dev":0.173086,"confidence_interval_95":[0.5,0.8],"source_positions":[{"source":"EPA CTX / CalEPA","year":2021,"value":0.8,"weight":0.30176},{"source":"IARC","year":2021,"value":0.5,"weight":0.41},{"source":"EPA CTX / IRIS","year":2021,"value":0.5,"weight":0.30176},{"source":"HQ_DIRECT","year":2026,"value":0.3,"weight":0.35}]},"confidence":{"mean":0.73786,"weightedMean":0.73786,"std_dev":0.139778,"confidence_interval_95":[0.82,0.82],"source_positions":[{"source":"HQ_DIRECT","year":2026,"value":0.5,"weight":0.35},{"source":"IARC","year":2021,"value":0.82,"weight":0.41},{"source":"EPA CTX / IRIS","year":2021,"value":0.82,"weight":0.30176},{"source":"EPA CTX / CalEPA","year":2021,"value":0.82,"weight":0.30176}]},"recency":{"mean":0.569919,"weightedMean":0.569919,"std_dev":0.258835,"confidence_interval_95":[0.5,1],"source_positions":[{"source":"HQ_DIRECT","year":2026,"value":1,"weight":0.35},{"source":"IARC","year":2021,"value":0.5,"weight":0.41},{"source":"EPA CTX / IRIS","year":2021,"value":0.368,"weight":0.30176},{"source":"EPA CTX / CalEPA","year":2021,"value":0.368,"weight":0.30176}]},"methodology":{"mean":0.922993,"weightedMean":0.922993,"std_dev":0.131042,"confidence_interval_95":[1,1],"source_positions":[{"source":"HQ_DIRECT","year":2026,"value":0.7,"weight":0.35},{"source":"IARC","year":2021,"value":1,"weight":0.41},{"source":"EPA CTX / IRIS","year":2021,"value":1,"weight":0.30176},{"source":"EPA CTX / CalEPA","year":2021,"value":1,"weight":0.30176}]},"specificity":{"mean":0.793637,"weightedMean":0.793637,"std_dev":0.074257,"confidence_interval_95":[0.92,0.92],"source_positions":[{"source":"HQ_DIRECT","year":2026,"value":0.92,"weight":0.35},{"source":"IARC","year":2021,"value":0.75,"weight":0.41},{"source":"EPA CTX / IRIS","year":2021,"value":0.75,"weight":0.30176},{"source":"EPA CTX / CalEPA","year":2021,"value":0.75,"weight":0.30176}]},"consensus":{"exists":false,"strength":0,"disagreement_magnitude":0.319781,"warning":null}},"interpretation":{"summary":"Regulatory agencies show substantial disagreement. EPA CTX / CalEPA classifies as higher risk (80th percentile), while HQ_DIRECT concludes lower risk (30th percentile).","confidence_note":"Moderate-quality evidence base. Disagreement reflects methodological and interpretive differences, not data quality issues.","context_note":null,"warning":null},"sources":[{"id":"iarc_haa_v84_2004","type":"regulatory","title":"IARC Monographs Volume 84: Some Drinking-water Disinfectants and Contaminants, Including Arsenic — Dichloroacetic Acid Group 2B, Trichloroacetic Acid Group 2B, MX Group 2B (2004)","year":2004},{"id":"epa_stage2_dbpr_2006","type":"regulatory","title":"US EPA: Stage 2 Disinfectants and Disinfection Byproducts Rule (40 CFR Parts 141 and 142) — TTHM MCL 80 μg/L, HAA5 MCL 60 μg/L, Locational Running Annual Average, BDCM Cancer Risk Assessment, Bladder Cancer Epidemiology (2006)","year":2006}],"sources_scope":"context","warnings":["year_inferred:IARC:2021","year_inferred:EPA CTX / IRIS:2021","year_inferred:EPA CTX / CalEPA:2021","unmapped_classification:EPA CTX / Genetox:genotoxicity: positive (ames: positive, 6 positive","unmapped_classification:EPA CTX / Genetox:genotoxicity: positive (ames: positive, 6 positive","unmapped_classification:EPA CTX / Skin-Eye:skin irritation: skin corr. 1a (score: very high)","unmapped_classification:EPA CTX / Skin-Eye:eye irritation: category 1 (score: very high)","unmapped_classification:EPA CTX / Skin-Eye:skin irritation: category 1 (score: very high)","unmapped_classification:EPA CTX / Skin-Eye:eye irritation: category 8.3a (category 1) (score:","unmapped_classification:EPA CTX / Skin-Eye:skin irritation: category 8.2a (category 1a) (scor","unmapped_classification:EPA CTX / Skin-Eye:skin sensitisation: in vivo (non-llna): high frequ","unmapped_classification:EPA CTX / Skin-Eye:skin sensitisation: in vivo (non-llna): not likely"],"meta":{"synthesis_version":"1.1.0","config_version":"1.1.0","n_sources":4,"db_version":51,"warnings":["year_inferred:IARC:2021","year_inferred:EPA CTX / IRIS:2021","year_inferred:EPA CTX / CalEPA:2021","unmapped_classification:EPA CTX / Genetox:genotoxicity: positive (ames: positive, 6 positive","unmapped_classification:EPA CTX / Genetox:genotoxicity: positive (ames: positive, 6 positive","unmapped_classification:EPA CTX / Skin-Eye:skin irritation: skin corr. 1a (score: very high)","unmapped_classification:EPA CTX / Skin-Eye:eye irritation: category 1 (score: very high)","unmapped_classification:EPA CTX / Skin-Eye:skin irritation: category 1 (score: very high)","unmapped_classification:EPA CTX / Skin-Eye:eye irritation: category 8.3a (category 1) (score:","unmapped_classification:EPA CTX / Skin-Eye:skin irritation: category 8.2a (category 1a) (scor","unmapped_classification:EPA CTX / Skin-Eye:skin sensitisation: in vivo (non-llna): high frequ","unmapped_classification:EPA CTX / Skin-Eye:skin sensitisation: in vivo (non-llna): not likely"]},"schema":"synthesis","_notice":"ALETHEIA output is reference data, not professional advice. Not a substitute for primary agency sources or qualified professionals. See https://aletheia.holisticquality.io/disclaimer.","_disclaimer_url":"https://aletheia.holisticquality.io/disclaimer","available_contexts":["human_adult","human_child","exposure_ingestion","human_teen","human_elderly","human_infant","human_pregnant"]}