Environmental problems can be the public’s concern, and they also feel the ratio of dangerousness. Consequently, collecting their opinions and trying to get to know the way of their thinking regarding their environmental problem and solving them was an attractive case study for the authors of this article. In this research, the authors found the public’s opinion and attitude regarding environmental situations and issues in Kurdistan Region-Iraq throughout a public questionnaire/survey. Around 450 people randomly participated from various geographical locations/cities of the region proportioned to the population rate regarding different demography, gender, age, and academic background. The statistical Package for the Social Sciences (SPSS) program was used to analyze their opinion. Also, the cross-tabulation method was used to understand the relationship between two or more variables. Gender, age, and educational background had effects on the participants’ attitudes toward environmental issues. Females, aged from 20 to 30, and Ph.D. degree holders were paying more attention to the environment. Geographically, the participation ratio for the Sulaimani, Erbil, Duhok, Halabja, and Kirkuk Provinces was 28.48 %, 21.95 %, 17.61%, 16.69%, and 15.00 %, respectively. High and low participation levels of the contributors are a reflection of the environmental awareness of the contributors, providing environmentalfacilities for the people, background, and culture of the community, and stability of political, economical, and social issues of the areas. Furthermore, COVID-19 affected the environment, and commonly it had a positive impact on the environment.

Water treatment plant (WTP) is essential for supplying water with the accepted quality to the consumer. There is a necessity to evaluate the performance of WTP for proper treatment of raw water. The present study aimed to evaluate the performance of Qandil WTP units, Erbil City, Iraq. For assessment the WTP units, water samples were collected from raw water, after clarification, after filtration, and storage tank. Removal efficiencies for the clarifiers, filtration unit, storage tank, and the whole WTP were calculated and presented. Obtained removal efficiencies for the sedimentation unit, filtration unit, after disinfection, and the entire Qandil WTP were 85.13 %, 90.50 %, 31.9, and 99.178 %, respectively. In addition, water quality index (WQI) for the WTP was studied. WQI assessment was made by testing 13 physicochemical water quality such as turbidity, pH, electrical conductivity (EC), total dissolved salts etc... It has been found that turbidity, electrical conductivity, total alkalinity, and total hardness have more influence on drinking water quality. WQI for Qandil WTP was 41.59 and it regarded as excellent level.