This study focused on using indirect filtration through riverbeds to produce high-quality drinking water. Data on water quality from a water intake facility(capacity 10,000 m3/day) and nearby rivers were collected over a three-year period. The average intake facility specifications were found to be a specific surface area of 58 balls/m2, a mean particle size of 24 mm, an inflow velocity of 2.2 cm/sec, and a burial depth of 5 m. The water quality improvement rate was assessed as grade Ia, surpassing the adjacent river’s water quality. Correlation analysis showed a weak correlation between opening ratio, Suspended Solid (SS), and Biochemical Oxygen Demand (BOD) compared to total coliforms and fecal coliforms. The correlation coefficient R value of SS was -0.614, BOD was –0.588, total coliforms -0.870, and fecal coliforms -0.958. The R value shows a negative value, which showed that the larger the opening rate, the lower the removal rate of water pollutants. The correlation coefficient R values according to the depth of burial were found to be BOD 0.914, SS-0.124, total coliforms 1.000, and fecal coliforms 0.866. The deeper the burial depth, the higher the removal rate of BOD and microbial groups.

1. 서 론
2. 연구방법
    2.1 복류수 취수시설제원 자료수집
3. 연구결과
    3.1 48개소 복류수 취수시설제원 현황
4. 토 의
5. 결 론
사 사

• 권혁준(계명대학교 환경과학과) | Hyuk-jun Kwon (Environment Science, Keimyung University)
• 강민철(계명대학교 환경과학과) | Min-chul Kang (Environment Science, Keimyung University)
• 한성용(K-water 수도개발처) | Seong-yong Han (K-water Water supply development department)
• 신성우(K-water 수도개발처) | Sung-woo Shin (K-water Water supply development department)
• 정찬우(K-water 수도개발처) | Chan-woo Jeong (K-water Water supply development department)
• 이태관(계명대학교 환경과학과) | Tae-gwan Lee (Environment Science, Keimyung University) Corresponding author