A study on the corrosion index of Tap Water(TW) and Reclaimed Water(RW) using KWI(Korea Water Index) and KRWI(Korea Reclaimed Index Water) method


  • Usman Rasheed
  • Hyundong Lee
  • Myeongsik Kong
  • Pilljae Kwak






Pipelines corrosion, main factor of pipeline corrosion, KWI index method, KRWI index method


This study aim to find the corrosion index of Tap water and Reclaimed water using KWI (Korea Water Index) and KRWI (Korea Reclaimed Water Index) method. The impact of corrosion inhibiting factors (pH ,hardness, alkalinity) and corrosion accelerating facor (TDS, chlorine ion, sulphate ion) has studied. The corrosion assessment method based on the corrosion index is used in predicting corrosion and offering information on the control of corrosive water quality.





[1] H.D. Lee, U. Rasheed and M.S. Kong (2018), A study on the comparison of corrosion in water supply pipes due to tap water (TW) and reclaimed water (RW)â€, Water, Vol.10, No. 4, pp.496.

[2] Lee H., Bae C., Park J., Chung W. and Kwak, P. (2001), Evaluation of water quality characteristics effects on the internal corrosion of galvanized steel service pipe in the buildingâ€, Journal of Korean Society on Water Quality, Vol.17, No.5, pp.627-635

[3] A Guidebook for Reuse of Treated Wastewater, The Ministry of Environment (2007)

[4] Guideliness for water reuse, U.S. Environmental protection policy (2014)

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