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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":0.0098,"valueText":"0,0098","unit":"µg/L","limit":0.1,"limitUnit":"µg/L","status":"ok","sampleDate":"2025-12-17T00:00:00Z","sampleId":"ZW18128:2025-12-17"},"pfas4":{"value":0.0027,"valueText":"0,0027","unit":"µg/L","limit":0.004,"limitUnit":"µg/L","status":"ok","sampleDate":"2025-12-17T00:00:00Z","sampleId":"ZW18128:2025-12-17"},"pfas4DetectedCount":2,"lowerBound":true,"sampledAt":null,"qualifiers":[{"name":"PFOS","valueText":"<0,001","unit":"µg/L"},{"name":"PFHpA","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":"<0,001","unit":"µg/L"},{"name":"PFTrDA","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":"<0,001","unit":"µg/L"},{"name":"PFUnDS","valueText":"<0,001","unit":"µg/L"},{"name":"PFDoDS","valueText":"<0,001","unit":"µg/L"},{"name":"PFTrDS","valueText":"<0,001","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":"ZW1163:2025-12-17","date":"2025-12-17","commune":"52048","communeName":"Montigny-le-Tilleul","sourceUrl":"https://environnement.wallonie.be/home/gestion-environnementale/environnement-sante/pfas","networks":["ZW1163"],"sum20":{"value":0.0073,"valueText":"0,0073","unit":"µg/L","nonDetect":false,"lowerBound":false},"pfas4":{"value":0.0011,"valueText":"0,0011","unit":"µg/L","nonDetect":false,"lowerBound":false},"revision":"950b1cee0da6734443e50d624024021a36353bed61bf9faab63212177e1c75fb"},{"id":"ZW18128:2025-12-17","date":"2025-12-17","commune":"52048","communeName":"Montigny-le-Tilleul","sourceUrl":"https://environnement.wallonie.be/home/gestion-environnementale/environnement-sante/pfas","networks":["ZW18128"],"sum20":{"value":0.0098,"valueText":"0,0098","unit":"µg/L","nonDetect":false,"lowerBound":false},"pfas4":{"value":0.0027,"valueText":"0,0027","unit":"µg/L","nonDetect":false,"lowerBound":false},"revision":"c53bb068326b72fa96f99bb5c762d2fbc0ff3ca729b7c5848d4b9388a1614a1f"},{"id":"ZW1163:2025-12-16","date":"2025-12-16","commune":"52048","communeName":"Montigny-le-Tilleul","sourceUrl":"https://environnement.wallonie.be/home/gestion-environnementale/environnement-sante/pfas","networks":["ZW1163"],"sum20":{"value":0.006,"valueText":"0,006","unit":"µg/L","nonDetect":false,"lowerBound":false},"pfas4":{"value":0.0013,"valueText":"0,0013","unit":"µg/L","nonDetect":false,"lowerBound":false},"revision":"b6bae4973ae1d9863e8238d80447b5fcdfb3bb991182223fb6fec2c0d5811b34"},{"id":"ZW1163:2025-12-16#2","date":"2025-12-16","commune":"52048","communeName":"Montigny-le-Tilleul","sourceUrl":"https://environnement.wallonie.be/home/gestion-environnementale/environnement-sante/pfas","networks":["ZW1163"],"sum20":{"value":0.0044,"valueText":"0,0044","unit":"µg/L","nonDetect":false,"lowerBound":false},"pfas4":{"value":0.0013,"valueText":"0,0013","unit":"µg/L","nonDetect":false,"lowerBound":false},"revision":"c2016116a942563796dac1fdeff7fe2c333a0818c94f5ed8816f3c76907725aa"},{"id":"ZW18128:2025-12-01","date":"2025-12-01","commune":"52048","communeName":"Montigny-le-Tilleul","sourceUrl":"https://environnement.wallonie.be/home/gestion-environnementale/environnement-sante/pfas","networks":["ZW18128"],"sum20":{"value":0.0073,"valueText":"0,0073","unit":"µg/L","nonDetect":false,"lowerBound":false},"pfas4":{"value":0.0016,"valueText":"0,0016","unit":"µg/L","nonDetect":false,"lowerBound":false},"revision":"2f8428cf72969cf1ab99ea744d21bed6fe11024737ed127bb75be4d3ffbe3948"},{"id":"ZW1163:2025-11-17","date":"2025-11-17","commune":"52048","communeName":"Montigny-le-Tilleul","sourceUrl":"https://environnement.wallonie.be/home/gestion-environnementale/environnement-sante/pfas","networks":["ZW1163"],"sum20":{"value":0.0054,"valueText":"0,0054","unit":"µg/L","nonDetect":false,"lowerBound":false},"pfas4":{"value":0.0024,"valueText":"0,0024","unit":"µg/L","nonDetect":false,"lowerBound":false},"revision":"265a0055fe0e9fd78e40fb9a5201e6c5f1e886447eb080f88b05926471f5dd0c"},{"id":"ZW18128:2025-11-17","date":"2025-11-17","commune":"52048","communeName":"Montigny-le-Tilleul","sourceUrl":"https://environnement.wallonie.be/home/gestion-environnementale/environnement-sante/pfas","networks":["ZW18128"],"sum20":{"value":0.0045,"valueText":"0,0045","unit":"µg/L","nonDetect":false,"lowerBound":false},"pfas4":{"value":0.0018,"valueText":"0,0018","unit":"µg/L","nonDetect":false,"lowerBound":false},"revision":"fbe58f7a8b89e013af82f09b06d538bde63fce5e94c78260c037e774883016bf"},{"id":"ZW1162:2025-10-09","date":"2025-10-09","commune":"52048","communeName":"Montigny-le-Tilleul","sourceUrl"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