Research has been conducted on the level of pollution caused by Leachate in shallow groundwater around Kebon Kongok landfill, Gerung, West Lombok. This research was conducted considering that water has many benefits in daily life, so it is important to know the quality of the water consumed. The research used experimental methods by analyzing physical parameters (Temperature, conductivity, pH and TDS) and chemical parameters in the form of heavy metal content (Pb, Fe, Cu and Mn). The results of physical parameter tests mostly show that the quality of shallow groundwater is still within the safe quality standard, there is 1 shallow groundwater point that is polluted due to the close proximity to the leachate. Chemical parameters indicate that the content of heavy metals is mostly well below the quality standard, except Cu metal is detected at 0.029 mg / l and Mn metal 1,457 mg / l at a distance of 50 m.KEYWORDS : Leachate; Shallow Water; Physics Parameters; Chemical Parameters

Telah dilakukan kegiatan pengabdian kepada masyarakat melalui sosialisasi tingkat pencemaran air sumur menggunakan parameter fisika yaitu suhu, TDS, konduktivitas dan pH. Dengan adanya kegiatan ini maka diharapkan tingkat kesadaran masyarakat untuk senantiasa menjaga pola hidup bersih dapat meningkat. Sosialisasi dilakukan dengan pemeriksaan secara langsung kondisi air sumur masyarakat di Desa Telagawaru. Selain melakukan pemeriksaan, dilakukan juga penyebaran angket kepada masyarakat sebagai sarana evaluasi kegiatan. Berdasarkan hasil pengukuran didapatkan bahwa air sumur di Desa Telagawaru tidak mengalami pencemaran karena nilai suhu, konduktivitas dan TDS berada dibawah standar baku mutu yang telah ditetapkan oleh PERMENKES RI No.32 tahun 2017. Namun tingkat keasaman air di bawah netral dengan nilai pH 5. Hal ini tidak mengganggu kesehatan masyarakat, akan tetapi menyebabkan logam seperti pipa air lebih mudah terkorosi. Sedangkan hasil evaluasi dari angket menunjukkan bahwa kebermanfaatan kegiatan mencapai 100%, hal ini dikarenakan masyarakat mendukung kegiatan sosialisasi yang diadakan. Walaupun terdapat beberapa masyarakat yang meragukan metode yang digunakan dalam sosialisasi, akan tetapi persentasenya terbilang cukup rendah yakni 10%.

It has been conducted a research to analyze ceremai fruit (Phyllanthus acidus) as an electrolyte solution for galvanic cells. The materials used consisted of copper (Cu), zinc (Zn) electrodes and an electrolyte solution from ceremai fruit. Electrolyte solution with a concentration variation of 60 to 100% was obtained from pure ceremai fruit electrolyte solution mixed with aquades. In addition, the electrolyte solution is fermented in a period of 1 to 5 days. The variables measured were pH, voltage, electric current and electric power. Based on the data analysis, it was found that the value of the acidity level was proportional to the concentration where at 100% solution concentration the pH value was 4.8 and at 60% the pH value was 5.4. The greatest voltage is 1 volt that obtained when the solution is in the most acidic state or highest concentration. It is found that the greater the concentration of the solution, the smaller the pH value (the acidity level increases) the value of the voltage, current and power will increase. However, when the electrolyte solution is fermented, it appears that the pH value is inversely proportional to the voltage generated. The longer of fermentation time, the pH value will increase but the voltage value will decrease. When the electrolyte solution is fresh, the pH value is 4.8 with a voltage of 1 volt, but on the 5th day of fermentation the acidity level increases with pH value of 2.15 but the voltage decreases to 0.65 volts. This is caused by oxygen exposure at the time of measurement so that the oxygen in the solution will increase. An increase of oxygen will reduce the density of electrically charged ions so that the current will decreases and the voltage will also decrease.