Gumi Urban Corporation Earns Top Analytical Institution Certification for 5th Consecutive Year in International Water Quality Assessment

Rated "satisfactory" in all six water quality categories in ERA proficiency test
Demonstrated analytical accuracy and reliability among 1,081 participating laboratories worldwide

Gumi Sewage Treatment Plant, operated by Gumi Urban Corporation, has demonstrated its internationally recognized analytical capabilities by earning top-performing analytical institution certification for the fifth consecutive year in an international water quality analysis assessment.

Water Quality International Proficiency Testing Certificate administered by Environmental Resource Associates (ERA) in the United States [Provided by Gumi Urban Corporation]

The laboratory at Gumi Sewage Treatment Plant received a “satisfactory” rating in all six evaluated categories in an international water quality proficiency test organized by the U.S. Environmental Resource Associates (ERA) [Photo provided by Gumi Urban Corporation]

Gumi Urban Corporation said the laboratory at Gumi Sewage Treatment Plant received a "satisfactory" rating in all six assessed categories in an international water quality proficiency test organized by Environmental Resource Associates (ERA) in the United States.

In the assessment, Gumi Sewage Treatment Plant achieved excellent results in all six categories: biochemical oxygen demand (BOD), total organic carbon (TOC), suspended solids (SS), total nitrogen (T-N), total phosphorus (T-P), and total coliforms.

In particular, the absolute Z-score for every category was below 0.5, well under the satisfactory threshold of 2.0.

This result demonstrates analytical accuracy and measurement reliability that meet international standards.

The laboratory at Gumi Sewage Treatment Plant has worked to ensure stable water quality management, drawing on technical expertise built through daily analyses of influent and effluent at sewage treatment facilities in the area, as well as a rigorous quality management system.

Lee Jaewoong, president of Gumi Urban Corporation, said, "The achievement of receiving satisfactory ratings in all categories for five consecutive years is the result of our employees' expertise and sustained efforts being recognized internationally. We will continue to strengthen our analytical capabilities and quality management and take the lead in creating a clean and safe environment in the Nakdong River basin."

Water quality management is a core public service directly linked to public safety. Building on its internationally recognized analytical capabilities, the city should make even greater efforts to protect water quality in the Nakdong River and ensure stable sewage treatment.

This content was produced with the assistance of AI translation services.