Le Haut Conseil de la sant\u00e9 publique (HCSP), via son groupe de travail permanent sur la s\u00e9curit\u00e9 des eaux, a \u00e9t\u00e9 saisi de la question des recommandations \u00e0 formuler concernant la pr\u00e9sence de PFAS dans les boues issues des stations d\u2019\u00e9puration d\u2019eaux us\u00e9es urbaines ou industrielles. Ses travaux, fond\u00e9s notamment sur des auditions, l\u2019am\u00e8nent \u00e0 \u00e9largir l\u2019analyse \u00e0 l\u2019ensemble des mat\u00e9riaux fertilisants et amendements du sol (MFAS) contenant des PFAS, d\u00e8s lors qu\u2019ils font l\u2019objet d\u2019\u00e9pandages ou d\u2019autres applications intentionnelles au sol. Le HCSP souligne la n\u00e9cessit\u00e9 de raisonner en flux annuels surfaciques totaux de PFAS dans les plans d\u2019\u00e9pandage.<\/p>\n
Le HCSP constate l\u2019absence de consensus international sur des valeurs de gestion des PFAS dans les mat\u00e9riaux appliqu\u00e9s au sol. Il identifie toutefois une base commune possible pour la liste de mol\u00e9cules \u00e0 prendre en compte dans des valeurs r\u00e9glementaires, qui doit rester adaptable aux contextes locaux, avec la possibilit\u00e9 d\u2019y ajouter d\u2019autres PFAS en fonction de leur pr\u00e9sence, ainsi que des pr\u00e9curseurs connus, le cas \u00e9ch\u00e9ant.<\/p>\n
Le HCSP recommande en priorit\u00e9 de mettre en \u0153uvre de mani\u00e8re syst\u00e9matique des politiques de r\u00e9duction \u00e0 la source de la contamination des eaux us\u00e9es par les PFAS, en identifiant et en \u00e9liminant les principales sources de rejets dans les r\u00e9seaux d\u2019assainissement urbains. Il pr\u00e9conise d\u2019ajuster les listes de PFAS \u00e0 surveiller et \u00e0 int\u00e9grer dans les sommes r\u00e9glementaires, sur la base de ses propositions issues de l\u2019analyse de campagnes de mesures dans les mat\u00e9riaux contenant des PFAS, afin de mieux refl\u00e9ter leur repr\u00e9sentativit\u00e9 et leur occurrence.<\/p>\n
Sur la base des r\u00e9sultats de ces campagnes de mesures, le HCSP propose de classer les mat\u00e9riaux contenant des PFAS en trois cat\u00e9gories. La premi\u00e8re cat\u00e9gorie regroupe les mat\u00e9riaux pr\u00e9sentant une somme des 37 PFAS analys\u00e9s inf\u00e9rieure \u00e0 100 \u00b5g\/kg de mati\u00e8re s\u00e8che (MS), une concentration en PFOA inf\u00e9rieure \u00e0 5 \u00b5g\/kg MS ou une concentration en PFOS inf\u00e9rieure \u00e0 10 \u00b5g\/kg MS, assorties de valeurs maximales de flux surfaciques. Pour cette cat\u00e9gorie, l\u2019\u00e9pandage au sol serait autoris\u00e9 sous r\u00e9serve de la protection des captages d\u2019eau destin\u00e9e \u00e0 la consommation humaine et du respect de flux annuels totaux d\u2019apport limit\u00e9s, d\u00e9finis pour les mat\u00e9riaux de type 1 et 2.<\/p>\n
Pour les aires d\u2019alimentation de captages d\u2019eau potable, le HCSP recommande de restreindre l\u2019usage aux mat\u00e9riaux dont la teneur totale en PFAS est inf\u00e9rieure \u00e0 2 \u00b5g\/kg MS. Il insiste \u00e9galement sur l\u2019information des propri\u00e9taires des terres recevant des mat\u00e9riaux contenant des PFAS, qui doivent \u00eatre inform\u00e9s des niveaux de concentration mesur\u00e9s. Ces recommandations s\u2019inscrivent dans un contexte de gestion des risques pour la sant\u00e9 publique et la protection des ressources en eau, en l\u2019absence de r\u00e9f\u00e9rences internationales harmonis\u00e9es.\u00a0(contenu r\u00e9sum\u00e9 par l’IA)\u200bLire la Suite<\/a>\u200b<\/p>","protected":false},"excerpt":{"rendered":" Le Haut Conseil de la sant\u00e9 publique (HCSP), via son groupe de travail permanent sur la s\u00e9curit\u00e9 des eaux, a \u00e9t\u00e9 saisi de la question des recommandations \u00e0 formuler concernant […]<\/p>\n","protected":false},"author":1,"featured_media":4174,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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