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Waste management in Karang Bawang Village is only transported by garbage officers, garbage transportation is carried out once a week or twice still using the transportation system, then disposed of to the landfill. The problem found in Karang Bawang Village is that there is organic waste that is disposed of carelessly and not managed specifically so that the waste causes environmental problems such as unpleasant odors, damaging the scenery, as a hotbed of disease and others. One way of processing waste is by processing the waste into liquid organic fertilizer. Liquid organic fertilizer (POC) is a solution resulting from the decay of organic materials derived from crop residues, household waste, animal urine, animal and human waste. In this community service activity, a training method for making liquid organic fertilizer was carried out with PKK women in Karang Bawang Village. The results of this community service can increase knowledge for PKK mothers to be able to utilize the remains of household waste to make liquid organic fertilizer which can be used to fertilize plants. And as an effort to utilize abundant household waste and reduce household waste in the community.

Organic waste is still a problem that needs to be resolved. Piles of organic waste can cause the emergence of methane gas (CH4), giving rise to an unpleasant odor and can even potentially cause disease. The aim of this community service is to provide understanding, knowledge and skills to the community regarding how to utilize household organic waste in the form of fruit and vegetable waste into eco-enzymes by fermentation. eco-enzyme is a multi-purpose liquid that can be used to purify waste water, as a household cleaning product, as a detergent, as a pest control product, to remove pesticide residues, and also as an organic fertilizer for plants. The method used is Participatory Action Research (PAR) where the service team is integrated into the community and works with the community to increase the knowledge and abilities of the people who are members of the Women Farming Group (KWT) in understanding and changing the community to become better, more empowered and knowledgeable. The results of this activity were able to increase the understanding, knowledge and skills of Women Farmer Groups in 4 Districts of Bandar Lampung city both conceptually and practically, and have the awareness not to just throw away organic waste, but to use it because it not only protects the environment but also provides benefits to the community. This activity was considered successful and sustainable for future programs.  

Kampung Depet Indah is one of the villages in the Celala District, Central Aceh District. Kampung Depet Indah is located in an area that is remote in the District of Celala with its vast natural potential with agricultural land and plantations. Based on the results of surveys conducted on several farms and plantations, there are still many farmers who on average use chemical fertilizers as a source of additional or substitute nutrients needed by plants to support growth. One of the work programs being carried out is the manufacture of liquid organic fertilizer (POC) from banana peel waste, where POC itself is a liquid organic fertilizer that can be used by farmers as a provider of nutrients for plants and crops. The implementation of making POC up to the socialization stage to the community consists of several stages which include: (1) Preparation of tools and materials (2) Making POC as a sample (3) Making POC posters (4) Socializing POC to the community (5) Question and answer session.

The existence of the cosmetics industry basically has a positive impact but also creates new problems because there is still inadequate management of liquid waste. The aim of the study was to find out how the coagulation and flocculation processes affect the quality of BOD, COD, and TSS in wastewater treatment plants. This research method uses a qualitative type method, based on its type with a cross sectional approach with an observational researchhmethode. The populationnof this study is the outlet of the Wastewater Treatment Plant which has undergone coagulation and flocculation processes. The samples used were outlets after the coagulation and flocculation processes were carried out at the WWTP in Cosmetic Industry X, Depok City. The results from the inlet levels of BOD 2,152 mg/l, COD 5,380 mg/l, and TSS 1,830 mg/l. The outlet levels of the Cosmetic Industry X Wastewater Treatment Installation in Depok City showed a BOD level of 15 mg/l, a COD level of 63 mg/l, and a TSS of 20 mg/l. In this study the contents of BOD, COD and TSS in cosmetic industry waste X in Depok city were included in the water quality status with good quality after coagulation and flocculation processes.