{"hq_id":"hq-p-hom-000236","name":"School Building Drinking Water Lead Testing (EPA 3Ts, Remediation)","category":{"primary":"household","secondary":"school","tags":["lead","school water","drinking water","EPA 3Ts","testing","remediation","fountain","plumbing"]},"product_tier":"HOM","overall_risk_level":"moderate","description":"Lead in school drinking water: a widespread problem because many schools were built before 1986 (lead solder ban) and have aging plumbing that leaches lead. EPA: no safe level of lead in children. EPA 3Ts Program (Training, Testing, Taking Action): voluntary guidance for school water testing — 15 ppb action level (matching SDWA). LCRR (Lead and Copper Rule Revisions, 2024): requires testing in schools and childcare facilities served by community water systems, but does NOT set a school-specific action level. Many states have enacted mandatory school water testing: NY, CA, IL, OR, MD — with action levels ranging from 1 ppb (proposed) to 20 ppb. Remediation: replace fixtures, flush lines, install POU filters.","synthesis":{"derived_risk_level":"severe","synthesis_confidence":0.744,"synthesis_method":"compound_composition","context_used":"human_child","context_source":"product_users","exposure_modifier":0.977,"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":"all children (no safe lead level — developing brains), youngest children most vulnerable","overall_risk":"moderate","primary_concerns":["No safe level of lead in children (EPA, CDC, AAP)","Pre-1986 school plumbing: lead solder leaching into drinking water","Voluntary federal testing (EPA 3Ts) means many schools never tested","First-draw stagnant water has highest lead concentrations"],"exposure_routes":"Oral (drinking water from fountains and cafeteria — daily school exposure)"},"exposure":{"routes":["oral"],"contact_types":["oral_direct"],"users":["child"],"duration":"minutes","frequency":"daily","scenarios":["Children drinking from water fountains with lead-leaching plumbing","First-draw water after overnight stagnation (highest lead levels)","Kitchen faucets in cafeteria: cooking and drinking water exposure","Older buildings with lead solder (pre-1986) and brass fixtures (up to 8% lead before 2014)"],"notes":"EPA 3Ts: Training (understand sources), Testing (first-draw and flush sampling), Taking Action (remediate above action level). Lead sources in schools: lead solder in copper pipes (pre-1986), brass fixtures and valves (up to 8% lead pre-2014 Reduction of Lead in Drinking Water Act), lead service lines (rare for schools but possible). First-draw sampling: collect after 8+ hours stagnation — represents worst-case scenario. Flushing lines for 30 seconds before use reduces lead 50-90% as interim measure. Point-of-use NSF 53 certified filters: remove lead to <1 ppb. Bottle filling stations: increasingly popular alternative to traditional fountains."},"consumer_guidance":{"usage_warning":"Ask your school if water has been tested for lead — and request results. Many states now require testing (check your state law). Advocate for NSF 53 certified POU filters on all drinking fountains and kitchen faucets. Bottle filling stations with NSF 53 filter: best solution for schools. As interim measure: flush fountains 30 seconds each morning before student use.","safer_alternatives":["NSF 53 certified point-of-use filters on all drinking water outlets","Bottle filling stations with built-in NSF 53 filter","Flush lines 30 seconds each morning before students arrive (interim)","Full plumbing remediation: replace lead service lines, solder, and fixtures"]},"regulatory":{"applicable_regulations":[{"jurisdiction":"USA","regulation":"EPA LCRR (Lead and Copper Rule Revisions) + State School Testing Laws","citation":"40 CFR 141 Subpart I (LCRR 2024); various state laws","requirements":"LCRR: requires testing in schools/daycares served by community water systems (effective 2024). EPA 3Ts: voluntary guidance, 15 ppb action level. State laws: NY (15 ppb mandatory), CA (5 ppb), IL (5 ppb), OR (5 ppb), MD (20 ppb). AAP recommends 1 ppb.","compliance_status":null,"effective_date":"2024-10-16","enforcing_agency":"EPA / state health departments","penalties":null,"source_ref":null}],"certifications":[{"name":"NSF 53","issuer":"NSF International","standard":"NSF/ANSI 53","scope":"Certifies POU filters for lead reduction. Must reduce lead to <10 ppb from 150 ppb challenge water."}],"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":false,"disposal_guidance":"Lead plumbing: hazardous waste disposal per state rules. POU filters: regular waste (lead captured in filter matrix).","hazardous_waste":true,"expected_lifespan":"varies"},"formulation":{"form":"varies","key_ingredients":[],"certifications":[]},"materials":{"common":[],"concerning":[],"preferred":[]},"compound_composition":[{"hq_id":"hq-c-ino-000001","compound_name":null,"role":"plumbing_leachate","typical_concentration":"varies"}],"identifiers":{"common_names":["school building drinking water lead testing (epa 3ts, remediation)"],"aliases":[],"manufacturer":null,"brands":[]},"brand_examples":[{"brand":"SC Johnson","manufacturer":"SC Johnson","market_position":"mass_market","notable":"Household product conglomerate"},{"brand":"Clorox","manufacturer":"Clorox","market_position":"mass_market","notable":"Household cleaning market leader"},{"brand":"3M","manufacturer":"3M","market_position":"mass_market","notable":"Home safety and maintenance products"}],"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":"EPA LCRR (Lead and Copper Rule Revisions) + State School Testing Laws (40 CFR 141 Subpart I (LCRR 2024); various state laws)","jurisdiction":"USA","year":2024,"citation":"40 CFR 141 Subpart I (LCRR 2024); various state laws","id":"src_f2f47c67"},{"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 Environmental Protection Agency (EPA)","jurisdiction":"USA","id":"src_defdd418","extraction":"description_reference"}],"meta":{"schema_version":"4.0.0","last_updated":"2026-03-25","timestamp":"2026-05-14T01:25:41.934Z"}}