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Valeurs publiées en ng/L, converties en µg/L ; un « < » indique que tous les composés étaient sous la limite de quantification. Licence de réutilisation non vérifiée pour ce document (les données ouvertes du SPW sont normalement CC BY 4.0) ; attribution SPW-ARNE et SWDE en attendant confirmation."},"pfas":{"status":"measured","sum20":{"value":null,"valueText":"<0,023","unit":"µg/L","limit":0.1,"limitUnit":"µg/L","status":"ok","sampleDate":"2025-10-14T00:00:00Z","sampleId":"ZIECBW21:2025-10-14","nonDetect":true,"upperBound":0.023},"pfas4":{"value":null,"valueText":"<0,004","unit":"µg/L","limit":0.004,"limitUnit":"µg/L","status":"ok","sampleDate":"2025-10-14T00:00:00Z","sampleId":"ZIECBW21:2025-10-14","nonDetect":true,"upperBound":0.004},"pfas4DetectedCount":0,"lowerBound":true,"sampledAt":null,"qualifiers":[{"name":"PFOS","valueText":"<0,001","unit":"µg/L"},{"name":"PFOA","valueText":"<0,001","unit":"µg/L"},{"name":"PFHxS","valueText":"<0,001","unit":"µg/L"},{"name":"PFHxA","valueText":"<0,001","unit":"µg/L"},{"name":"PFHpA","valueText":"<0,001","unit":"µg/L"},{"name":"PFBA","valueText":"<0,001","unit":"µg/L"},{"name":"PFPeA","valueText":"<0,001","unit":"µg/L"},{"name":"PFNA","valueText":"<0,001","unit":"µg/L"},{"name":"PFDA","valueText":"<0,001","unit":"µg/L"},{"name":"PFUnDA","valueText":"<0,001","unit":"µg/L"},{"name":"PFDoDA","valueText":"<0,0015","unit":"µg/L"},{"name":"PFTrDA","valueText":"<0,0015","unit":"µg/L"},{"name":"PFBS","valueText":"<0,001","unit":"µg/L"},{"name":"PFPeS","valueText":"<0,001","unit":"µg/L"},{"name":"PFHpS","valueText":"<0,001","unit":"µg/L"},{"name":"PFNS","valueText":"<0,001","unit":"µg/L"},{"name":"PFDS","valueText":"<0,0015","unit":"µg/L"},{"name":"PFUnDS","valueText":"<0,0015","unit":"µg/L"},{"name":"PFDoDS","valueText":"<0,0015","unit":"µg/L"},{"name":"PFTrDS","valueText":"<0,0015","unit":"µg/L"}],"comparison":{"proposed":{"value":0.0005,"period":"annual_mean","official":false,"state":"inconclusive"},"sweden":{"value":0.004,"jurisdiction":"se"},"franceSum20":{"value":0.1,"jurisdiction":"fr"}}},"samples":[{"id":"ZIECBW21:2025-10-14","date":"2025-10-14","commune":"25119","communeName":"Lasne","sourceUrl":"https://environnement.wallonie.be/home/gestion-environnementale/environnement-sante/pfas","networks":["ZIECBW21"],"sum20":{"value":null,"valueText":"<0,023","unit":"µg/L","nonDetect":true,"lowerBound":false},"pfas4":{"value":null,"valueText":"<0,004","unit":"µg/L","nonDetect":true,"lowerBound":false},"revision":"17e50b9d651d89d91dd8ff311fc21e6289bba1697d46bba0ff537a1a4e80b70d"},{"id":"ZIECBW20:2025-09-16","date":"2025-09-16","commune":"25119","communeName":"Lasne","sourceUrl":"https://environnement.wallonie.be/home/gestion-environnementale/environnement-sante/pfas","networks":["ZIECBW20"],"sum20":{"value":null,"valueText":"<0,02","unit":"µg/L","nonDetect":true,"lowerBound":false},"pfas4":{"value":null,"valueText":"<0,004","unit":"µg/L","nonDetect":true,"lowerBound":false},"revision":"ea484af742b454cd266209074fb420eae67424a4658a33991181ddf2c044e5d1"},{"id":"ZIECBW1:2025-03-03","date":"2025-03-03","commune":"25119","communeName":"Lasne","sourceUrl":"https://environnement.wallonie.be/home/gestion-environnementale/environnement-sante/pfas","networks":["ZIECBW1"],"sum20":{"value":0.009,"valueText":"0,009","unit":"µg/L","nonDetect":false,"lowerBound":false},"pfas4":{"value":0.003,"valueText":"0,003","unit":"µg/L","nonDetect":false,"lowerBound":false},"revision":"d0b4656159df900c9f64a109f655ed207c8f0d1848023ada110bcbb7eeb4406a"},{"id":"ZIECBW21:2025-02-03","date":"2025-02-03","commune":"25119","communeName":"Lasne","sourceUrl":"https://environnement.wallonie.be/home/gestion-environnementale/environnement-sante/pfas","networks":["ZIECBW21"],"sum20":{"value":null,"valueText":"<0,027","unit":"µg/L","nonDetect":true,"lowerBound":false},"pfas4":{"value":null,"valueText":"<0,004","unit":"µg/L","nonDetect":true,"lowerBound":false},"revision":"ec48222d0fbff3c1ed4c94082d3184e3bc39fa033bd4bfa7ee8ea3a979f07dd9"},{"id":"ZIECBW20:2025-01-20","date":"2025-01-20","commune":"25119","communeName":"Lasne","sourceUrl":"https://environnement.wallonie.be/home/gestion-environnementale/environnement-sante/pfas","networks":["ZIECBW20"],"sum20":{"value":null,"valueText":"<0,027","unit":"µg/L","nonDetect":true,"lowerBound":false},"pfas4":{"value":null,"valueText":"<0,004","unit":"µg/L","nonDetect":true,"lowerBound":false},"revision":"cad0185e8812049efafe6dea986c0d6630e0dea68f768e258f45bc0b9bbe3ccc"},{"id":"ZIECBW21:2024-10-15","date":"2024-10-15","commune":"25119","communeName":"Lasne","sourceUrl":"https://environnement.wallonie.be/home/gestion-environnementale/environnement-sante/pfas","networks":["ZIECBW21"],"sum20":{"value":null,"valueText":"<0,022","unit":"µg/L","nonDetect":true,"lowerBound":false},"pfas4":{"value":null,"valueText":"<0,004","unit":"µg/L","nonDetect":true,"lowerBound":false},"revision":"ad961ff2f39c565347809ae7c47ae561dc8b72eaeb25c2df8eaa04319968a544"},{"id":"ZIECBW20:2024-09-17","date":"2024-09-17","commune":"25119","communeName":"Lasne","sourceUrl":"https://environnement.wallonie.be/home/gestion-environnementale/environnement-sante/pfas","networks":["ZIECBW20"],"sum20":{"value":null,"valueText":"<0,025","unit":"µg/L","nonDetect":true,"lowerBound":false},"pfas4":{"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