Impact of leachate on irrigation water quality around TPST Piyungan

Rubbish is becoming a global environmental issue as the amount of waste generated constantly increases due to the continuous growth in the level of consumption. The previous investigation reported that the existence of waste management facility known as TPST such as Piyungan in Bantul Regency as a facility for managing rubbish can have a positive or negative impact on the environment. This is because the leachate from the waste is suspected to pollute the surrounding irrigation water. Therefore, this study aims to determine the impact of leachate on the quality of irrigation water around TPST Piyungan using field surveys and laboratory tests. The water sample was taken in Sitimulyo, one of the villages affected by TPST Piyungan activities, and in Jambidan village as point control. The physical and chemical parameters of the water sample tested include temperature, pH, COD, BOD, TSS, TDS, Zn, Fe, Cr, Cu, and Pb. This was followed by the evaluation of the Index Pollution raw quality Class IV, as stated in the Governor Regulation of the Special Region of Yogyakarta Number 20 of 2008 to determine the quality status. The results showed that the status of the water sample is in category IV, which fulfills raw quality (good condition), where point 1 has a value of 0.22 and 0.13 for points 2 and 3. This indicated that the irrigation water quality is not affected by the leachate generated from the TPST Piyungan.