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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":0.0082,"valueText":"0,0082","unit":"µg/L","limit":0.1,"limitUnit":"µg/L","status":"ok","sampleDate":"2025-12-01T00:00:00Z","sampleId":"ZW1326:2025-12-01"},"pfas4":{"value":0.0014,"valueText":"0,0014","unit":"µg/L","limit":0.004,"limitUnit":"µg/L","status":"ok","sampleDate":"2025-12-01T00:00:00Z","sampleId":"ZW1326:2025-12-01"},"pfas4DetectedCount":1,"lowerBound":true,"sampledAt":null,"qualifiers":[{"name":"PFOS","valueText":"<0,001","unit":"µg/L"},{"name":"PFHxS","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":"<0,0015","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":"over"},"sweden":{"value":0.004,"jurisdiction":"se"},"franceSum20":{"value":0.1,"jurisdiction":"fr"}}},"samples":[{"id":"ZW1326:2025-12-01","date":"2025-12-01","commune":"25117","communeName":"Chastre","sourceUrl":"https://environnement.wallonie.be/home/gestion-environnementale/environnement-sante/pfas","networks":["ZW1326"],"sum20":{"value":0.0082,"valueText":"0,0082","unit":"µg/L","nonDetect":false,"lowerBound":false},"pfas4":{"value":0.0014,"valueText":"0,0014","unit":"µg/L","nonDetect":false,"lowerBound":false},"revision":"28e5a9f9e781145c995e1f9138bf710dcf5c70acd773b97d67a8985bf35b243b"},{"id":"ZW1326:2025-10-07","date":"2025-10-07","commune":"25117","communeName":"Chastre","sourceUrl":"https://environnement.wallonie.be/home/gestion-environnementale/environnement-sante/pfas","networks":["ZW1326"],"sum20":{"value":0.0143,"valueText":"0,0143","unit":"µg/L","nonDetect":false,"lowerBound":false},"pfas4":{"value":0.0012,"valueText":"0,0012","unit":"µg/L","nonDetect":false,"lowerBound":false},"revision":"191a27974dbf987ab6e0df43065db21df2781c199475f957f8d9f43efeaa2742"},{"id":"ZW1326:2025-09-09","date":"2025-09-09","commune":"25117","communeName":"Chastre","sourceUrl":"https://environnement.wallonie.be/home/gestion-environnementale/environnement-sante/pfas","networks":["ZW1326"],"sum20":{"value":0.0109,"valueText":"0,0109","unit":"µg/L","nonDetect":false,"lowerBound":false},"pfas4":{"value":0.0016,"valueText":"0,0016","unit":"µg/L","nonDetect":false,"lowerBound":false},"revision":"f09177791d6c5daf3718d1212bc8e9a03cc8060ef25f0ed8a78b7b1e2edd8562"},{"id":"ZW1326:2025-07-08","date":"2025-07-08","commune":"25117","communeName":"Chastre","sourceUrl":"https://environnement.wallonie.be/home/gestion-environnementale/environnement-sante/pfas","networks":["ZW1326"],"sum20":{"value":null,"valueText":"<0,0205","unit":"µg/L","nonDetect":true,"lowerBound":false},"pfas4":{"value":null,"valueText":"<0,004","unit":"µg/L","nonDetect":true,"lowerBound":false},"revision":"6901617ff1a8c2fee480b701c89a9bc5703608d7730ef7bf19796830fea421d2"},{"id":"ZW1326:2025-05-06","date":"2025-05-06","commune":"25117","communeName":"Chastre","sourceUrl":"https://environnement.wallonie.be/home/gestion-environnementale/environnement-sante/pfas","networks":["ZW1326"],"sum20":{"value":null,"valueText":"<0,0205","unit":"µg/L","nonDetect":true,"lowerBound":false},"pfas4":{"value":null,"valueText":"<0,004","unit":"µg/L","nonDetect":true,"lowerBound":false},"revision":"b6c6bbdae5da807e27c2b05dbc6e41a7bab6af85c4483a575be612a59df76179"},{"id":"ZIECBW6:2025-03-11","date":"2025-03-11","commune":"25117","communeName":"Chastre","sourceUrl":"https://environnement.wallonie.be/home/gestion-environnementale/environnement-sante/pfas","networks":["ZIECBW6"],"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":"e8319f0c13f1265960332c21a59b9466797243b803a3d171c75aad456d703cd5"},{"id":"ZW1326:2025-02-19","date":"2025-02-19","commune":"25117","communeName":"Chastre","sourceUrl":"https://environnement.wallonie.be/home/gestion-environnementale/environnement-sante/pfas","networks":["ZW1326"],"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":"2e73006d1292d607268a8d482cf7fb76717d61145086c16d2ee1bc63101fca7e"},{"id":"ZW1326:2025-01-20","date":"2025-01-20","commune":"25117","communeName":"Chastre","sourceUrl":"https://environnement.wallonie.be/home/gestion-environnementale/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