Potential of Water Pollution in Girimulyo, West Progo

Hydrogeological survey activities have been carried out to identify potential water pollution in the Girimulyo area, West Progo. The research method was conducted with a field hydrogeological survey to get hydrogeological data and water quality in the form of pH and TDS. Water quality status evaluation is to determine the pollution index based on water quality standards. The results showed that the water in the study area was generally colorless, tasteless, and odorless and transparent (not turbid). The pH value of water measured in the field is 7 - 8.1, while the TDS is 15 - 305 ppm. The results of the water chemistry laboratory test show that groundwater quality is quite good with a pH of 7 - 8.1 and TDS 112-240 ppm. Groundwater violence is in the middle to medium class - hard, as is river water. Chemical types develop as groundwater Ca - bicarbonate and Ca, Mg - bicarbonate. The index of water pollution studied is in the mildly polluted category (Pollution Index of 1, 81 - 4, 81), with the highest level of pollution found in river water is in Niten.