Open AccessIdentification and Factors of Failure Risk in Refill Drinking Water Quality by Using Ishikawa Diagram
Author(s) -
Euis Nurul Hidayah,
Gloria Veronica.,
Okik Hendriyanto Cahyonugroho
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1125/1/012020
Subject(s) - turbidity , water quality , ishikawa diagram , environmental science , environmental health , medicine , reliability engineering , engineering , biology , ecology , root cause
The owner of refill drinking water stores (RDWS) have a big opportunities to expand their business since most of people need drinking water with the cheaper price than bottled drinking water. However, some issues regarding the quality of refill drinking water (RDW) have been arised recently, such as issue of pathogen existence in the treated water of RDW. This study aims are to measure the RDW quality and to identify the factors of failure risk of RDWS in treating RDW by using Ishikawa diagram. Study was carried out in 23 RDWS in Gunung Anyar District of Surabaya City. Sample was taken and measured for pH, turbidity, total dissolved solid (TDS), total coliform and Eschericia coli concentration. Ishikawa diagram was applied to reveal risk failure factors of RDW treatment processes. The results show that microbiology parameters was not fulfilled the drinking water quality standard. Ishikawa diagram found that man, material, method, machine, monitoring and evaluation for environment were the factors of failure risk. Therefore it is necessary to provide recommendations to reduce the failure risk of microbiology parameters through UV or Ozone contact time of at least 4 minutes, routine monitoring of treatment units, preparing procedure operational standard.