Asbestos yana shiga cikin ruwan sha, amma rashin tabbas game da lafiyar jiki

Wani bincike ya tabbatar da cewa bututun siminti da suka tsufa suna saurin gushewa fiye da ƙetare, kuma filayen asbestos suna shiga cikin ruwa - amma ba a matakan haɗari ba tukuna. Masu bincike daga Makarantar Geography ta Jami'ar Otago sun gano "tabbatacciyar shaida" na asbestos fibers a cikin samfuran ruwan sha daga wurare 35 a kusa da Christchurch kuma sun ce za a sake yin hakan a cikin samar da ruwa a fadin kasar. A halin yanzu, New Zealand na da bututun asbestos mai tsawon kilomita 9000 da za a maye gurbinsu a kan kudi dala biliyan 2.2, binciken ya ce. An yi amfani da simintin asbestos a cikin bututun ruwa a duniya tun daga shekarun 1930 zuwa 1980, lokacin da ya bayyana cewa za su iya sakin filayen asbestos a cikin ruwan idan sun lalace. Kara karantawa: * Christchurch shirye don fluoride ruwa, amma halin kaka da kuma lokaci ƙara da iska* Nitrate a cikin ruwan sha zai iya kashe 40 New Zealanders a shekara, binciken ya gano Akaroa Marubutan binciken sun ce mafi yawan bututun yanzu sun wuce amfani da rayuwarsu kuma cikin kasadar gazawa. Marubuciya Dokta Sarah Mager ta ce a yawancin sassan New Zealand, samar da ruwa yana da ƙananan matakan calcium da magnesium, wanda ya ba da damar bututun simintin asbestos ya ragu da yawa kuma yana fitar da karin asbestos fibers. "Matsalar wannan lalata yana da sauri sosai, don haka bututun suna ruɓe daga ciki da sauri fiye da misalin ƙasashen waje." A cikin binciken Christchurch, an gano filayen asbestos a cikin samfurori 19 na wuraren ruwan wuta 20 da uku daga cikin samfuran famfo na gida 16. Wannan adadin bai wuce matakan tsaro ba a ƙarƙashin jagororin Amurka - ƙasa ɗaya tilo da ke da jagororin asbestos a cikin ruwan sha. Wani dakin gwaje-gwaje na ƙwararru na ƙasa da ƙasa a Amurka ya yi nazarin samfuran ruwa daga Christchurch a cikin abin da masu bincike suka ce shi ne karo na farko da ya yi daidai da zaizayar ruwa daga bututun asbestos na New Zealand. Majalisar birnin Christchurch a baya ta yi amfani da hydrants 17 don filaye na asbestos a cikin 2017 kuma sun same su a daya. Duk da haka, marubutan binciken sun ce hanyoyin nazarin da aka yi amfani da su ba su da kyau. Duk da yake an san haɗarin asbestos na iska a matsayin carcinogen, ba a kammala tasirin lafiyar jiki ba kuma babu wata ƙa'ida ta ƙayyadaddun ƙayyadaddun ƙwayar asbestos a cikin ruwan sha a New Zealand. Rahoton wanda kungiyar kula da ruwa ta kasa da kasa ta Journal of Water Supply ta buga, ya yi nuni da wani bincike na baya-bayan nan da ya nuna alakar asbestos da aka sha da kuma yawaitar cututtukan daji na ciki da na launin fata, da kuma kasancewar asbestos a cikin nama na ciki. shaida a cikin Hukumar Lafiya ta Duniya, ka'idodin kula da ingancin ruwan sha na New Zealand na yanzu da ka'idodin ruwan sha na Ostiraliya sun bayyana cewa babu isasshen bayanai a duniya don zana hanyar haɗin lafiya zuwa asbestos a cikin ruwan sha. Duk da haka, masu haɗin gwiwar binciken sun ce ba a yi nazari sosai kan illar asbestos ga ruwan sha ba. "Haɗin da ke tattare da cututtukan cututtukan da ke tsakanin fiber na asbestos a cikin ruwan sha da cutar kansa za a iya kafa shi ne kawai idan bayanai akan filaye na asbestos sun kasance: waɗannan bayanan ba a tattara su akai-akai." An san bututun simintin asbestos suna da rauni a girgizar ƙasa saboda suna da rauni kuma cikin sauƙin lalacewa. Binciken ya gano mafi girman ma'aunin zaruruwan asbestos an samu a yankunan gabashin birnin, inda aka shimfida bututu tare da cikar ƙasa maimakon tsakuwa.Yankin ya sami ruwan sha mai tsanani a lokacin girgizar ƙasar Canterbury na 2011. Tim Drennan, shugaban riko na ruwa uku a majalisar birnin Christchurch, ya ce an samu karuwar "tsarin sabuntar da ake ci gaba da yi" tun a shekarun 1990 kuma birnin yana da kashi 21 cikin 100 na samar da ruwan da yake samu. "Yana da mahimmanci a sake nanata cewa bututun simintin asbestos da ke cikin hanyar sadarwar ruwan mu ba sa haifar da wata matsala ta lafiya nan take." Drennan ya ce majalisar tana aiwatar da "tsarin ba da fifiko kan haɗari" wanda ke yin la'akari da yadda gazawar ke shafar al'umma gaba ɗaya. Drennan ya ce galibin sabunta bututun ruwa da majalisar ta tsara a cikin shekaru 27 masu zuwa, bututun siminti na asbestos ne. Saboda ƙayyadaddun samfurin, marubutan sun kasa tantance ko lalacewar girgizar ƙasa da ruwan sha a cikin Christchurch na nufin cewa ruwan birnin yana da matakan asbestos mafi girma fiye da sauran wurare. Duk da haka, sun ba da shawarar cewa dukkanin majalissar "su kula da samar da ruwa na asbestos fibers, musamman yayin da waɗannan bututun suka kai ƙarshen rayuwarsu, don gano tsufa na bututu da ba da fifiko ga maye gurbin sassan bututu". "Wannan matsala ce ta ƙasa saboda bututun siminti-asbestos shekaru ɗaya ne kuma an sanya su - don haka yana da kyau a ɗauka cewa sauran ƙasar New Zealand za su sami adadin sakin asbestos iri ɗaya," in ji wani marubuci Michael Nopic. "Gaskiyar gaskiya tana karkashin kasa, tana boye, kuma ba za mu yi tunani a kai ba har sai ya yi aiki."