Analysis of temporal variation characteristics on water quality along Code River, Indonesia

Physicals, chemicals, and microbial parameters were analysedalong the Coder River to reveal the temporal influence on water qualitycharacteristics. From December 2017 to March 2018, we collected twice amonth surface water sample at the nine monitored sampling site. Theresults indicate that the temporal factor has a significant impact, particularly in wet and dry seasons, on increasing the chemical oxygendemand (COD), ammonia-nitrogen (NH3-N), total coliform (TC), andfaecal coliform (FC) above the local government standard. Overall, thewater quality in the Code River is mainly influenced by the anthropogenicpollution sources that did not decrease during the dry season because of thelow water flow