The Water Quality Laboratory in Department of Environmental Engineering has a range of test services which include drinking water, wastewater, soil, and air quality testing with fourtytwo test parameters. All testing parameters have been accredited by KAN. Drinking water and wastewater parameters that are included in quality standards in Indonesia can be tested in our laboratory with the quality of the test results in accordance with international standards.

Supported by various modern instruments such as the Atomic Absorption Spectrophotometer (AAS) for ppm and ppb scales, UV VIS, BET instruments, mobile testing tools (mobile kits) and other testing instruments, the Water Quality Laboratory in Department of Environmental Engineering UII is considered a reference laboratory by various agencies, both public and private in Indonesia, especially for the D.I. Yogyakarta and Central Java regions.

Service facilities:
1. Drinking water samples testing which include physical, chemical, and biological parameters according to existing quality standards.
2. Wastewater samples testing which include physical, chemical, and biological parameters according to existing quality standards.
3. Heavy metal testing (measurement).
4. Sampling for freshwater, drinking water, and wastewater.
5. In house training for parameter analysis of water and wastewater.