Dampak pencemaran logam kromium (Cr) berupa menurunnya kualitas ekosistem perairan hingga terganggunya kesehatan manusia, upaya mengatasinya dengan melakukan fitoremediasi. Fitoremediasi menggunakan tanaman kangkung air (Ipomoea aquatica) dapat mengurangi logam Cr di perairan. Fitoremediasi dengan menggunakan tanaman kangkung air (Ipomoea aquatica) merupakan salah satu tujuan Sustainable Development Goals (SDGs) yaitu mengenai akses air bersih dan sanitasi dan penanganan perubahan iklim. Penelitian ini bertujuan untuk mendeskripsikan kemampuan kangkung air (Ipomoea aquatica) sebagai agen fitoremediasi terhadap penurunan kadar kromium (Cr) pada media tanam, mendiskripsikan pengaruh variasi konsentrasi kromium (Cr) terhadap kadar klorofil daun dan pertumbuhan (biomassa basah) kangkung air (Ipomoea aquatica). Penelitian ini dilakukan secara eksperimental menggunakan rancangan acak kelompok (RAK) dengan satu faktor perlakuan yaitu konsentrasi logam kromium (Cr) pada media tanam sebesar 0 ppm, 5 ppm, 10 ppm, dan 15 ppm. Terdapat 6 kali pengulangan pada penelitian sehingga terdapat 24 unit perlakuan. Fitoremediasi dilakukan selama 7 hari dengan tumbuhan yang digunakan telah diaklimatisasi selama 7 hari. Parameter yang diukur dalam penelitian meliputi kadar logam Cr pada media tanam, pH, suhu, kadar klorofil, dan biomassa basah tumbuhan. Kadar Cr diukur dengan SSA (Spektrofotometer Serapan Atom), kadar klorofil daun diukur dengan spektrofotometer, dan biomassa basa diukur dengan timbangan. Analisis data penurunan kadar logam Cr pada media tanam, kadar klorofil daun, dan biomassa basah tumbuhan menggunakan uji  ANAVA satu arah  dan dilanjutkan Uji Duncan. Data pendukung pH dan suhu dianalisis secara deskriptif. Hasil penelitian menunjukkan variasi konsentrasi kromium (Cr) berpengaruh terhadap kemampuan penyerapan kadar logam Cr, kadar klorofil daun, dan biomassa basah kangkung air (Ipomoea aquatica). Perlakuan konsentrasi Cr 15 ppm menunjukkan penurunan kadar kromium pada media tanam sebesar 11,853 ppm, tetapi memiliki kadar klorofil daun dan penurunan biomassa terendah dibandingkan dengan perlakuan lain yaitu sebesar 10,167 mg/l dan 142 gram dengan biomassa awal 200 gram.  Hasil penelitian ini membuktikan bahwa Melati air (Ipomoea aquatica) memiliki kemampuan untuk menyerap logam kromium (Cr).

Impact of chromium (Cr) metal pollution results in a decline in the quality of aquatic ecosystems and disrupts human health. Efforts to address this involve conducting phytoremediation. Phytoremediation using water spinach plants (Ipomoea aquatica) can reduce chromium metal in water. Phytoremediation using water spinach plants (Ipomoea aquatica) can reduce Cr metal in waters. Phytoremediation using water spinach plants (Ipomoea aquatica) is one of the goals of the Sustainable Development Goals (SDGs), namely regarding access to clean water and sanitation and handling climate change. This research aims to describe the ability of water spinach (Ipomoea aquatica) as a phytoremediation agent for reducing chromium (Cr) levels in the planting medium, and to describe the influence of varying chromium (Cr) concentrations on leaf chlorophyll content and growth (wet biomass) of water spinach (Ipomoea aquatica). This research was conducted experimentally using a randomized complete block design (RAK) with one treatment factor, which is the concentration of chromium (Cr) metal in the planting medium of 0 ppm, 5 ppm, 10 ppm, and 15 ppm. There are 6 replications in the study, resulting in 24 treatment units. Phytoremediation was conducted for 7 days with plants that had been acclimatized for 7 days prior. Parameters measured in the study include the concentration of chromium (Cr) metal in the planting medium, pH, temperature, chlorophyll content, and wet biomass of each plant. The Cr concentration was measured using AAS (Atomic Absorption Spectrophotometer), leaf chlorophyll content was measured using a spectrophotometer, and wet biomass was measured using a scale. Data analysis for the reduction of chromium (Cr) concentration in the planting medium, leaf chlorophyll content, and wet biomass of plants will be conducted using a one-way ANOVA test followed by the Duncan test. Supporting data such as pH and temperature will be analyzed descriptively. The research results indicate that the variation in chromium (Cr) concentration affects the reduction of Cr metal concentration in the planting medium, leaf chlorophyll content, and wet biomass of water spinach (Ipomoea aquatica). The treatment with a Cr concentration of 15 ppm showed a decrease in chromium concentration in the planting medium by 11.853 ppm, but it had the lowest leaf chlorophyll content and biomass reduction compared to other treatments, measuring at 10.167 mg/l and 142 grams respectively, with an initial biomass of 200 grams. These research findings demonstrate that water spinach (Ipomoea aquatica) has the ability to absorb chromium (Cr) metal.