{"id":19408345,"date":"2026-08-10T07:00:00","date_gmt":"2026-08-10T06:00:00","guid":{"rendered":"https:\/\/kapitalis.com\/tunisie\/?p=19408345"},"modified":"2026-08-10T06:59:15","modified_gmt":"2026-08-10T05:59:15","slug":"plage-de-sidi-salem-a-bizerte-oued-harraga-au-coeur-dune-alerte-ecologique","status":"publish","type":"post","link":"https:\/\/kapitalis.com\/tunisie\/2026\/08\/10\/plage-de-sidi-salem-a-bizerte-oued-harraga-au-coeur-dune-alerte-ecologique\/","title":{"rendered":"Plage de Sidi Salem \u00e0 Bizerte | Oued Harraga au c\u0153ur d\u2019une alerte \u00e9cologique"},"content":{"rendered":"\n

La plage de Sidi Salem \u00e0 Bizerte est confront\u00e9e \u00e0 un probl\u00e8me r\u00e9current de pollution li\u00e9 aux rejets d\u2019eaux us\u00e9es en amont de l\u2019Oued Harraga. En p\u00e9riode estivale, la faiblesse des d\u00e9bits, conjugu\u00e9e \u00e0 l\u2019accumulation de mati\u00e8res organiques et \u00e0 la fermeture de l\u2019embouchure par un cordon sableux, peut favoriser la stagnation des eaux et la d\u00e9gradation de leur qualit\u00e9. Une situation qui soul\u00e8ve des enjeux sanitaires, environnementaux et \u00e9conomiques.<\/em><\/strong><\/p>\n\n\n\n

Lotfi Sahli<\/strong> *<\/p>\n\n\n\n\n\n\n

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\"\"<\/figure>\n<\/div>\n\n\n

Chaque \u00e9t\u00e9, le paysage baln\u00e9aire de Sidi Salem est confront\u00e9 \u00e0 une probl\u00e9matique environnementale persistante : la qualit\u00e9 des eaux \u00e0 proximit\u00e9 de l\u2019embouchure de l\u2019Oued Harraga.<\/p>\n\n\n\n

En l\u2019absence d\u2019un raccordement complet de certains secteurs riverains au r\u00e9seau public d\u2019assainissement, des rejets domestiques peuvent parvenir au cours d\u2019eau. En p\u00e9riode de fortes chaleurs, la diminution des d\u00e9bits r\u00e9duit la capacit\u00e9 naturelle de dilution, tandis que les mati\u00e8res organiques peuvent s\u2019accumuler.<\/p>\n\n\n\n

\u00c0 l\u2019embouchure, la formation d\u2019un cordon sableux peut par ailleurs limiter les \u00e9changes avec la mer. Les eaux stagnantes sont alors susceptibles de g\u00e9n\u00e9rer des nuisances olfactives et de favoriser le d\u00e9veloppement de microorganismes. La proximit\u00e9 imm\u00e9diate de la plage transforme ainsi un probl\u00e8me d\u2019assainissement en enjeu potentiel de sant\u00e9 publique et de protection du littoral.<\/p>\n\n\n\n

Une pollution aux cons\u00e9quences multiples<\/h2>\n\n\n\n

Au-del\u00e0 de la d\u00e9gradation visuelle et olfactive du site, la situation soul\u00e8ve trois pr\u00e9occupations majeures.<\/p>\n\n\n\n

Un enjeu sanitaire :<\/strong> la pr\u00e9sence \u00e9ventuelle de bact\u00e9ries indicatrices de contamination f\u00e9cale dans des eaux affect\u00e9es par des rejets domestiques peut repr\u00e9senter un risque pour les usagers, notamment les baigneurs. Les risques potentiels comprennent des troubles gastro-intestinaux ainsi que certaines infections cutan\u00e9es ou ORL. Seules des analyses microbiologiques r\u00e9guli\u00e8res permettent toutefois d\u2019\u00e9tablir pr\u00e9cis\u00e9ment le niveau de contamination et le risque sanitaire associ\u00e9.<\/p>\n\n\n\n

Un enjeu \u00e9cologique :<\/strong> l\u2019apport excessif de mati\u00e8res organiques et de nutriments peut modifier l\u2019\u00e9quilibre du milieu aquatique. \u00c0 terme, ces apports sont susceptibles de favoriser des ph\u00e9nom\u00e8nes d\u2019eutrophisation, d\u2019appauvrir localement le milieu en oxyg\u00e8ne et de perturber les organismes vivant dans les s\u00e9diments et les eaux c\u00f4ti\u00e8res.<\/p>\n\n\n\n

Un enjeu \u00e9conomique :<\/strong> la d\u00e9gradation de la qualit\u00e9 environnementale d\u2019une plage peut \u00e9galement affecter son attractivit\u00e9. \u00c0 Sidi Salem, les cons\u00e9quences potentielles concernent directement les activit\u00e9s li\u00e9es \u00e0 la saison estivale, notamment les commerces, les \u00e9tablissements de restauration et les services d\u00e9pendant de la fr\u00e9quentation baln\u00e9aire.<\/p>\n\n\n

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La qualit\u00e9 des eaux \u00e0 proximit\u00e9 de l\u2019embouchure de l\u2019Oued Harraga pose un probl\u00e8me \u00e9cologique et sanitaire.<\/em><\/figcaption><\/figure>\n<\/div>\n\n\n

Quelles r\u00e9ponses face \u00e0 l\u2019urgence ?<\/h1>\n\n\n\n

Pour sortir de cette situation r\u00e9currente, une intervention efficace devrait combiner mesures d\u2019urgence, travaux d\u2019assainissement et dispositif durable de surveillance.<\/p>\n\n\n\n

Phase 1 – Urgence et s\u00e9curisation :<\/h4>\n\n\n\n

– Informer et prot\u00e9ger les usagers :<\/em><\/strong> en cas de d\u00e9passement des seuils sanitaires, une signalisation claire et, si n\u00e9cessaire, une interdiction temporaire de baignade devraient \u00eatre mises en place \u00e0 proximit\u00e9 des zones concern\u00e9es, sur la base de r\u00e9sultats d\u2019analyses fiables ;<\/h4>\n\n\n\n

– R\u00e9tablir l\u2019\u00e9coulement :<\/em><\/strong> lorsque la fermeture de l\u2019embouchure contribue \u00e0 la stagnation des eaux, des op\u00e9rations hydrauliques adapt\u00e9es pourraient \u00eatre envisag\u00e9es par les autorit\u00e9s comp\u00e9tentes, apr\u00e8s \u00e9valuation de leurs impacts environnementaux ;<\/p>\n\n\n\n

– Identifier les rejets :<\/em><\/strong> une inspection du r\u00e9seau et du lit de l\u2019oued permettrait de localiser les \u00e9ventuels branchements non conformes et de proc\u00e9der \u00e0 leur suppression ou \u00e0 leur r\u00e9gularisation.<\/p>\n\n\n\n

Phase 2 – Assainissement et infrastructures :<\/h4>\n\n\n\n

– Acc\u00e9l\u00e9rer le raccordement au r\u00e9seau public :<\/em><\/strong> <\/em><\/strong>l\u2019extension du r\u00e9seau d\u2019assainissement aux secteurs encore insuffisamment desservis constitue l\u2019une des r\u00e9ponses prioritaires. Le raccordement des habitations concern\u00e9es devrait \u00eatre accompagn\u00e9 d\u2019un contr\u00f4le de conformit\u00e9 des installations ;<\/p>\n\n\n\n

– \u00c9tudier des solutions de traitement naturel <\/em><\/strong>:<\/strong> selon les caract\u00e9ristiques hydrologiques du site, la cr\u00e9ation d\u2019une zone humide artificielle, d\u2019un bassin de d\u00e9cantation ou d\u2019un dispositif de phytod\u00e9puration pourrait contribuer \u00e0 r\u00e9duire certains polluants avant leur arriv\u00e9e dans le milieu naturel. Ces solutions n\u00e9cessitent toutefois une \u00e9tude technique pr\u00e9alable ;<\/p>\n\n\n\n

– Am\u00e9liorer la gestion des eaux :<\/em><\/strong> une s\u00e9paration efficace des r\u00e9seaux d\u2019eaux pluviales et d\u2019eaux us\u00e9es permettrait \u00e9galement de limiter les risques de surcharge et de rejets accidentels lors des \u00e9pisodes pluvieux.<\/p>\n\n\n\n

 Phase 3 – Surveillance et gouvernance \u00e0 long terme :<\/h4>\n\n\n\n

– Traiter durablement les effluents : <\/em><\/strong> l\u2019objectif doit \u00eatre de supprimer les rejets d\u2019eaux us\u00e9es dans l\u2019oued et d\u2019assurer leur acheminement vers les infrastructures d\u2019assainissement appropri\u00e9es ;<\/p>\n\n\n\n

– Rendre les donn\u00e9es sanitaires accessibles :<\/em><\/strong> un programme r\u00e9gulier de surveillance microbiologique de la qualit\u00e9 des eaux de baignade, accompagn\u00e9 d\u2019une publication claire des r\u00e9sultats, permettrait d\u2019informer les habitants et les visiteurs et de renforcer la confiance dans les mesures prises ;<\/p>\n\n\n\n

– Associer les citoyens :<\/em><\/strong> Les associations locales, les riverains et les professionnels du tourisme ont \u00e9galement un r\u00f4le \u00e0 jouer. Sensibilisation, signalement des rejets et participation aux op\u00e9rations de vigilance peuvent compl\u00e9ter l\u2019action des autorit\u00e9s publiques.<\/p>\n\n\n\n

De l\u2019alerte \u00e0 l\u2019action<\/h2>\n\n\n\n

Le cas de l\u2019Oued Harraga illustre une probl\u00e9matique plus large : la fragilit\u00e9 des zones littorales face aux insuffisances d\u2019assainissement et \u00e0 la pression urbaine.<\/p>\n\n\n\n

\u00c0 Sidi Salem, la r\u00e9ponse ne pourra \u00eatre durable que si elle s\u2019attaque simultan\u00e9ment \u00e0 l\u2019origine des rejets, \u00e0 la qualit\u00e9 des eaux et \u00e0 la gestion de l\u2019embouchure. Au-del\u00e0 des interventions ponctuelles en p\u00e9riode estivale, c\u2019est donc une strat\u00e9gie coordonn\u00e9e entre services d\u2019assainissement, autorit\u00e9s locales, organismes charg\u00e9s du littoral, riverains et associations qui appara\u00eet n\u00e9cessaire.<\/p>\n\n\n\n

L\u2019enjeu d\u00e9passe d\u00e9sormais la seule qualit\u00e9 d\u2019une plage : il s\u2019agit de pr\u00e9server durablement un espace naturel, une activit\u00e9 \u00e9conomique et un patrimoine essentiel pour les habitants de Bizerte.<\/p>\n\n\n\n

* Pr\u00e9sident du bureau de la Conect \u00e0 Bizerte. <\/em><\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

La plage de Sidi Salem \u00e0 Bizerte confront\u00e9e \u00e0 un probl\u00e8me de pollution li\u00e9 aux rejets d\u2019eaux us\u00e9es en amont de l\u2019Oued Harraga.<\/p>\n","protected":false},"author":8,"featured_media":19408410,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[992,995,998,2433],"tags":[4307,148,129644,125372,112691,129643,1881,3252],"class_list":["post-19408345","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-a-la-une","category-economie","category-societe","category-tunisie","tag-assainissement","tag-bizerte","tag-eutrophisation","tag-oued-harraga","tag-protection-du-littoral","tag-rejets-domestiques","tag-sante-publique","tag-sidi-salem"],"yoast_head":"\nPlage de Sidi Salem \u00e0 Bizerte | Oued Harraga au c\u0153ur d\u2019une alerte \u00e9cologique - Kapitalis<\/title>\n<meta name=\"description\" content=\"La plage de Sidi Salem \u00e0 Bizerte confront\u00e9e \u00e0 un probl\u00e8me de pollution li\u00e9 aux rejets d\u2019eaux us\u00e9es en amont de l\u2019Oued Harraga.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/kapitalis.com\/tunisie\/2026\/08\/10\/plage-de-sidi-salem-a-bizerte-oued-harraga-au-coeur-dune-alerte-ecologique\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Plage de Sidi Salem \u00e0 Bizerte | Oued Harraga au c\u0153ur d\u2019une alerte \u00e9cologique - 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