{"hq_id":"hq-p-hom-000130","name":"Coffee filters (bleached paper)","category":{"primary":"household","secondary":"kitchen consumables","tags":["coffee filter","paper filter","bleached paper","dioxin","epichlorohydrin","food contact"]},"product_tier":"HOM","overall_risk_level":"low","description":"Disposable cone or basket-style paper coffee filters made from bleached wood pulp. Chlorine bleaching of paper generates trace dioxins and furans (PCDD/Fs) as byproducts. Wet-strength resins (often containing epichlorohydrin) are applied to prevent filter disintegration when wet. Hot water (195-205F) extraction during brewing mobilizes trace contaminants into the coffee. Daily exposure route — most users consume 1-4 cups of filtered coffee daily, representing cumulative lifetime oral exposure to ultra-trace dioxins and epichlorohydrin residues.","synthesis":{"derived_risk_level":"moderate_to_high","synthesis_confidence":0.747,"synthesis_method":"compound_composition","context_used":"human_adult","context_source":"product_users","exposure_modifier":1.15,"vulnerability_escalated":false,"escalation_reason":null,"compounds_resolved":2,"compounds_total":2,"synthesis_date":"2026-05-09","synthesis_version":"1.2.0","methodology_note":"exposure_modifier and adjusted_magnitude are computed from ALETHEIA-calibrated heuristics (route × duration × frequency multipliers, clamped to [0.5, 1.4]). Multipliers are directionally informed by EPA Exposure Factors Handbook (2011) and CalEPA OEHHA but are not regulatory consensus. See /api/methodology for full disclosure."},"hazard_summary":{"sensitive_populations":"adult (cumulative exposure)","overall_risk":"low","primary_concerns":["Dioxin bioaccumulation: even trace-level daily dioxin exposure contributes to total body burden over decades","Epichlorohydrin residue: probable carcinogen (IARC 2A) present at trace levels in wet-strength treated filters"],"exposure_routes":"oral (daily ingestion via coffee)"},"exposure":{"routes":["ingestion"],"contact_types":["oral_chronic"],"users":["adult"],"duration":"chronic","frequency":"daily","scenarios":["Daily coffee brewing: hot water extracts trace dioxins and epichlorohydrin into coffee","Cumulative lifetime exposure: 1-4 cups/day x 365 days/year x decades"],"notes":"Individual exposure per cup is extremely low (parts per trillion for dioxins). Concern is cumulative lifetime exposure and dioxin bioaccumulation in adipose tissue."},"consumer_guidance":{"red_flags":[{"indicator":"Bright white filter paper","meaning":"Likely chlorine-bleached; higher dioxin/furan residue potential","action":"Switch to unbleached (brown) or TCF filters"}],"green_flags":[{"indicator":"Unbleached (brown) or labeled 'TCF' (totally chlorine-free)","meaning":"No chlorine bleaching byproducts; no dioxin formation","verification":"Look for brown color or TCF/oxygen-bleached labeling"}],"what_to_ask":[],"alternatives":[{"name":"Unbleached paper coffee filters","notes":"No chlorine-bleached byproducts; no dioxins; equivalent filtration performance"},{"name":"Reusable metal or cloth coffee filters","notes":"Zero paper waste; no chemical exposure from filter; allows more coffee oils through (different flavor profile)"}],"notes":null},"regulatory":{"applicable_regulations":[{"jurisdiction":"USA","regulation":"FDA — Indirect food additive (paper in contact with food)","citation":"21 CFR 176.170","requirements":"Paper products in contact with food must comply with FDA regulations for food-contact substances.","compliance_status":null,"effective_date":null,"enforcing_agency":"FDA","penalties":null,"source_ref":null}],"certifications":[],"labeling":{"required_disclosures":[],"prop65_warning":{"required":null,"chemicals":[],"endpoint":null,"notes":null},"ghs_labeling":{"required":null,"signal_word":null,"pictograms":[],"hazard_statements":[],"notes":null},"hidden_ingredients":{"trade_secret_protected":null,"categories_hidden":[],"estimated_count":null,"known_concerns":"Bleaching process and wet-strength resin treatment not disclosed on consumer packaging","notes":null},"notes":null},"recalls":[],"regulatory_gap":"No required disclosure of bleaching method or wet-strength resin type on consumer packaging","notes":null},"lifecycle":{"recyclable":false,"disposal_guidance":"Compostable; add to compost with coffee grounds","hazardous_waste":false,"expected_lifespan":"single_use"},"formulation":{"form":"paper_filter","key_ingredients":[{"hq_id":null,"name":"Bleached wood pulp (cellulose)","role":"filter_matrix","concentration_pct":"95-99"},{"hq_id":"hq-c-org-000403","name":"Epichlorohydrin (wet-strength resin residue)","role":"wet_strength_additive","concentration_pct":"trace"},{"hq_id":"hq-c-org-000009","name":"Dioxins/furans (PCDD/Fs, bleaching byproduct)","role":"contaminant","concentration_pct":"trace_ppt"},{"hq_id":null,"name":"Optical brightening agents","role":"whitening","concentration_pct":"trace"}],"certifications":[]},"materials":{"common":[],"concerning":[],"preferred":[]},"compound_composition":[{"hq_id":"hq-c-org-000009","compound_name":"Dioxins and furans (PCDD/Fs)","role":"contaminant","typical_concentration":null},{"hq_id":"hq-c-org-000403","compound_name":"Epichlorohydrin","role":"wet_strength_resin","typical_concentration":null}],"identifiers":{"common_names":["coffee filter","paper coffee filter","bleached coffee filter","drip coffee filter"],"aliases":[],"manufacturer":null,"brands":[]},"brand_examples":[{"brand":"Generic Mass-Market Brand A","manufacturer":"Consumer Products Corporation","market_position":"mass_market","notable":"Widely available mass-market option"},{"brand":"Generic Mass-Market Brand B","manufacturer":"Consumer Goods Ltd","market_position":"mass_market","notable":"Popular budget alternative"}],"brand_examples_disclaimer":"Representative branded products of this category. Concerning ingredients listed in materials.concerning[] apply to the category, not necessarily to every named brand. Specific formulations vary by SKU and may have changed since this record was written; consult the brand's current ingredient label before drawing brand-level conclusions.","sources":[{"type":"expert_curation","name":"ALETHEIA Safety Database","date":"2026-03-24"},{"type":"regulation","title":"FDA — Indirect food additive (paper in contact with food) (21 CFR 176.170)","jurisdiction":"USA","citation":"21 CFR 176.170","id":"src_d1cadb46"},{"id":"src_001","type":"other","citation":"WHO Dioxins Fact Sheet (2023)","note":"Category: primary","inherited_from_compound":"hq-c-org-000009"},{"id":"src_002","type":"other","citation":"IARC Monograph Vol. 69: Polychlorinated Dibenzo-para-dioxins and Polychlorinated Dibenzofurans (1997)","note":"Category: primary","inherited_from_compound":"hq-c-org-000009"},{"id":"niosh_ech_carcinogen","type":"regulatory","title":"NIOSH: Epichlorohydrin — Occupational Carcinogen Designation; REL Ceiling 0.5 ppm; Skin Sensitization; Epoxy Resin Industry Health Hazards","year":1976,"inherited_from_compound":"hq-c-org-000403"},{"id":"atsdr_ech_toxprofile","type":"regulatory","title":"ATSDR Toxicological Profile: Epichlorohydrin — Carcinogenicity, Genotoxicity, Dermal Absorption, Respiratory Toxicity, Occupational Exposure, Environmental Fate","year":1992,"inherited_from_compound":"hq-c-org-000403"}],"meta":{"schema_version":"4.0.0","last_updated":"2026-03-24","timestamp":"2026-05-14T01:28:35.410Z"}}