{"id":85855,"date":"2026-04-18T20:36:15","date_gmt":"2026-04-18T19:36:15","guid":{"rendered":"https:\/\/lasentinelle.dz\/?p=85855"},"modified":"2026-04-18T20:36:16","modified_gmt":"2026-04-18T19:36:16","slug":"urgence-au-lac-fetzara-a-annaba-un-ecosysteme-en-peril-en-labsence-dune-station-depuration","status":"publish","type":"post","link":"https:\/\/lasentinelle.dz\/index.php\/2026\/04\/18\/urgence-au-lac-fetzara-a-annaba-un-ecosysteme-en-peril-en-labsence-dune-station-depuration\/","title":{"rendered":"Urgence au lac Fetzara \u00e0 Annaba\u00a0: Un \u00e9cosyst\u00e8me en p\u00e9ril en l&rsquo;absence d&rsquo;une station d&rsquo;\u00e9puration"},"content":{"rendered":"\n<p>Class\u00e9 zone humide d&rsquo;importance internationale au titre de la Convention de Ramsar depuis 2003, le lac Fetzara, \u00e0 Berrahal, dans la wilaya d&rsquo;Annaba, se d\u00e9grade \u00e0 vue d&rsquo;\u0153il. Des rejets d&rsquo;eaux us\u00e9es domestiques et industrielles non trait\u00e9es s&rsquo;y d\u00e9versent sans discontinuer, tandis que le projet de station d&rsquo;\u00e9puration, annonc\u00e9 \u00e0 maintes reprises, reste lettre morte. Une situation jug\u00e9e incompatible avec les engagements environnementaux de l&rsquo;Alg\u00e9rie. Le lac Fetzara, l&rsquo;un des principaux espaces \u00e9cologiques de la r\u00e9gion d&rsquo;Annaba, traverse une p\u00e9riode critique. Au c\u0153ur des pr\u00e9occupations : l&rsquo;absence de concr\u00e9tisation du projet de station d&rsquo;\u00e9puration des eaux us\u00e9es (STEP) \u00e0 Berrahal, pourtant annonc\u00e9 \u00e0 plusieurs reprises ces derni\u00e8res ann\u00e9es. Ce projet structurant, destin\u00e9 \u00e0 prot\u00e9ger cette zone humide contre les diff\u00e9rentes formes de pollution, semble enlis\u00e9 dans des lenteurs administratives et financi\u00e8res, laissant planer le risque d&rsquo;un abandon pur et simple. Cette inertie intervient dans un contexte environnemental d\u00e9j\u00e0 fragile. Le lac a fr\u00f4l\u00e9 la catastrophe \u00e9cologique \u00e0 plusieurs reprises, notamment durant les p\u00e9riodes estivales marqu\u00e9es par une baisse significative du niveau de ses eaux. \u00c0 cela s&rsquo;ajoute une pression croissante li\u00e9e aux rejets domestiques et industriels issus de la zone de Berrahal, d\u00e9vers\u00e9s sans traitement pr\u00e9alable dans la r\u00e9gion d&rsquo;El Guemgoum, au c\u0153ur m\u00eame de cette zone humide. Les eaux us\u00e9es provenant des p\u00f4les urbains de Kalitoussa et de la nouvelle ville Draa Errich se d\u00e9versent \u00e9galement dans le lac, accentuant la pression sur un \u00e9cosyst\u00e8me d\u00e9j\u00e0 vuln\u00e9rable. Cette accumulation de rejets transforme progressivement le plan d&rsquo;eau en r\u00e9ceptacle de substances liquides charg\u00e9es en agents pathog\u00e8nes et en mati\u00e8res polluantes.<\/p>\n\n\n\n<p>Les sp\u00e9cialistes de l&rsquo;environnement tirent la sonnette d&rsquo;alarme face \u00e0 l&rsquo;aggravation de la situation. Ils soulignent que l&rsquo;absence d&rsquo;infrastructures de traitement adapt\u00e9es favorise l&rsquo;accumulation de substances nocives, et mettent en garde contre les limites des stations d&rsquo;\u00e9puration classiques dans le traitement de certains effluents industriels, notamment ceux contenant des micropolluants organiques et min\u00e9raux susceptibles de persister longtemps dans l&rsquo;environnement. La situation pose \u00e9galement des enjeux sanitaires non n\u00e9gligeables. L&rsquo;exposition aux effluents pollu\u00e9s repr\u00e9sente un danger pour les travailleurs intervenant dans les r\u00e9seaux d&rsquo;assainissement, mais aussi pour les populations riveraines. La d\u00e9gradation des infrastructures li\u00e9e \u00e0 ces rejets accentue par ailleurs les co\u00fbts de maintenance et complique la gestion du r\u00e9seau.<\/p>\n\n\n\n<p>Plus inqui\u00e9tant encore, les eaux du lac Fetzara rejoignent l&rsquo;oued Seybouse sans traitement, \u00e9tendant la pollution \u00e0 l&rsquo;\u00e9chelle r\u00e9gionale. Le d\u00e9bit irr\u00e9gulier de cet oued, qui varie consid\u00e9rablement selon les saisons et les pr\u00e9cipitations, rend la dispersion des polluants d&rsquo;autant plus impr\u00e9visible. Face \u00e0 cette situation, les voix s&rsquo;\u00e9l\u00e8vent pour r\u00e9clamer une relance urgente du projet de STEP. Les habitants de Berrahal appellent aussi \u00e0 un renforcement des contr\u00f4les environnementaux, notamment \u00e0 l&rsquo;\u00e9gard des entreprises industrielles, dont certaines ont d\u00e9j\u00e0 \u00e9t\u00e9 sanctionn\u00e9es par le pass\u00e9 pour atteinte \u00e0 l&rsquo;environnement. Class\u00e9 le 4 juin 2003 au titre de la Convention de Ramsar, le lac Fetzara est reconnu comme une zone humide d&rsquo;importance internationale en raison de sa richesse \u00e9cologique et de son r\u00f4le dans la pr\u00e9servation de la biodiversit\u00e9. Il constitue un habitat essentiel pour de nombreuses esp\u00e8ces d&rsquo;oiseaux d&rsquo;eau migrateurs et s\u00e9dentaires, tout en assurant des fonctions naturelles majeures telles que la r\u00e9gulation des eaux et la protection contre les inondations. Ce classement engage les autorit\u00e9s \u00e0 renforcer les mesures de conservation pour pr\u00e9server l&rsquo;\u00e9quilibre fragile du site face aux pressions humaines et environnementales. La d\u00e9gradation progressive de cet espace naturel sous l&rsquo;effet des rejets polluants et de l&rsquo;absence de traitement ad\u00e9quat des eaux us\u00e9es appara\u00eet en contradiction flagrante avec ces engagements. Sans intervention rapide et coordonn\u00e9e, le risque est r\u00e9el de voir cet \u00e9cosyst\u00e8me basculer vers une d\u00e9gradation irr\u00e9versible \u2014 et avec lui, un patrimoine naturel que la r\u00e9gion d&rsquo;Annaba ne peut se permettre de perdre.<\/p>\n\n\n\n<p>Sofia Chahine<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Class\u00e9 zone humide d&rsquo;importance internationale au titre de la Convention de Ramsar depuis 2003, le lac Fetzara, \u00e0 Berrahal, dans<\/p>\n","protected":false},"author":6,"featured_media":39844,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":"","_wpscppro_dont_share_socialmedia":false,"_wpscppro_custom_social_share_image":0,"_facebook_share_type":"default","_twitter_share_type":"default","_linkedin_share_type":"default","_pinterest_share_type":"default","_linkedin_share_type_page":"","_instagram_share_type":"default","_medium_share_type":"default","_threads_share_type":"default","_google_business_share_type":"default","_selected_social_profile":[],"_wpsp_enable_custom_social_template":false,"_wpsp_social_scheduling":{"enabled":false,"datetime":null,"platforms":[],"status":"template_only","dateOption":"today","timeOption":"now","customDays":"","customHours":"","customDate":"","customTime":"","schedulingType":"absolute"},"_wpsp_active_default_template":true},"categories":[31],"tags":[],"class_list":["post-85855","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-regions"],"yoast_head":"<!-- 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