{"hq_id":"hq-p-hom-000229","name":"Emergency Water Storage in Plastic Containers (Long-Term Leaching, BPA, Antimony)","category":{"primary":"household","secondary":"emergency","tags":["emergency water","storage","plastic","leaching","BPA","antimony","HDPE","prepper","preparedness"]},"product_tier":"HOM","overall_risk_level":"low","description":"Emergency water storage (FEMA recommends 1 gallon/person/day for 3-14 days) in plastic containers introduces long-term leaching concerns. PET (#1) bottles: antimony leaches over time, accelerated by heat and UV (studies show 2-3x increase in antimony at 60C over 3 months). HDPE (#2) is preferred for long-term storage (lower leaching). BPA concerns for polycarbonate containers (less common now). Commercially bottled water (store-bought) has no FDA expiration requirement — the expiration date is for taste, not safety. Rotate emergency water every 6-12 months. Glass or stainless steel for longest-term storage with zero leaching.","synthesis":{"derived_risk_level":"severe","synthesis_confidence":0.744,"synthesis_method":"compound_composition","context_used":"human_child","context_source":"product_users","exposure_modifier":1,"vulnerability_escalated":false,"escalation_reason":null,"compounds_resolved":1,"compounds_total":1,"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":"infants (formula mixing with stored water), pregnant women","overall_risk":"low","primary_concerns":["PET antimony leaching accelerated by heat and UV during long-term storage","Polycarbonate (BPA) containers still used for some emergency water storage","Heat exposure (garage, attic, car trunk) significantly increases leaching","Water quality degradation over years if not rotated"],"exposure_routes":"Oral (drinking stored water with trace plastic leachates)"},"exposure":{"routes":["oral"],"contact_types":["oral_direct"],"users":["adult","child"],"duration":"varies","frequency":"event-based","scenarios":["Long-term water storage in PET bottles (antimony leaching over months/years)","Emergency water in garage (heat accelerates plastic leaching)","Polycarbonate containers: BPA leaching during long-term storage","Store-bought bottled water stored past printed date"],"notes":"FEMA recommendation: 1 gallon per person per day, minimum 3-day supply, ideally 14 days. HDPE (#2) containers: FDA food-grade, lowest leaching profile for long-term water storage. PET (#1): safe for short-term but antimony migration increases with time, heat, UV. Polycarbonate (#7): BPA leaching — avoid for water storage. Blue 5-gallon jugs (emergency): typically HDPE or PET — check resin code. Rotate water every 6-12 months (more for taste than safety). Store in cool, dark location (reduces leaching). Glass or stainless steel: zero leaching but breakage/weight concerns. Commercial water bottles: FDA says no expiration needed — quality may degrade but safety maintained if stored properly."},"consumer_guidance":{"usage_warning":"Use HDPE (#2) containers for emergency water storage (lowest leaching). Store in cool, dark location — NOT garage, attic, or vehicle trunk (heat accelerates leaching). Rotate every 6-12 months. 1 gallon/person/day, minimum 3-day supply. Do NOT reuse single-use PET bottles for long-term storage. Glass or stainless steel is zero-leaching alternative.","safer_alternatives":["HDPE (#2) food-grade containers (lowest plastic leaching)","Glass carboys or stainless steel tanks (zero leaching)","Store in cool, dark location (reduces all leaching pathways)","Rotate water every 6-12 months (replace with fresh)"]},"regulatory":{"applicable_regulations":[{"jurisdiction":"USA","regulation":"FDA Food Contact Materials (21 CFR 177)","citation":"21 CFR 177","requirements":"Plastic containers for food/water contact must use FDA food-grade resins. No specific standard for emergency water storage duration.","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":null,"notes":null},"notes":null},"recalls":[],"regulatory_gap":null,"notes":null},"lifecycle":{"recyclable":true,"disposal_guidance":"HDPE containers: recycling. Replace containers every 3-5 years (plastic degradation).","hazardous_waste":false,"expected_lifespan":"3-5_years"},"formulation":{"form":"varies","key_ingredients":[],"certifications":[]},"materials":{"common":[],"concerning":[],"preferred":[]},"compound_composition":[{"hq_id":"hq-c-ino-000001","compound_name":null,"role":"leaching_contaminant","typical_concentration":"trace over time"}],"identifiers":{"common_names":["emergency water storage in plastic containers (long-term leaching, bpa, antimony)"],"aliases":[],"manufacturer":null,"brands":[]},"brand_examples":[{"brand":"Viqua","manufacturer":"Trojan Technologies","market_position":"professional","notable":"Professional UV water treatment"},{"brand":"SteriPEN","manufacturer":"Katadyn","market_position":"mass_market","notable":"Portable UV water purifier"},{"brand":"HALO","manufacturer":"RGF Environmental","market_position":"premium","notable":"Whole-house UV water system"}],"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":"2026-03-25"},{"type":"regulation","title":"FDA Food Contact Materials (21 CFR 177)","jurisdiction":"USA","citation":"21 CFR 177","id":"src_8daa8591"},{"id":"src_001","type":"cdc","title":"CDC - Lead Poisoning Prevention","url":"https://www.cdc.gov/lead-prevention/","accessed":"2026-01-13","relevance":"Blood lead reference values, no safe level doctrine","inherited_from_compound":"hq-c-ino-000001"},{"id":"src_002","type":"who","title":"WHO - Lead Poisoning Fact Sheet","url":"https://www.who.int/news-room/fact-sheets/detail/lead-poisoning-and-health","year":2024,"accessed":"2026-01-13","relevance":"Global burden statistics, health effects","inherited_from_compound":"hq-c-ino-000001"},{"type":"regulatory","title":"US Food and Drug Administration (FDA)","jurisdiction":"USA","id":"src_82d1cfcd","extraction":"description_reference"}],"meta":{"schema_version":"4.0.0","last_updated":"2026-03-25","timestamp":"2026-05-14T01:26:14.240Z"}}