Ting Lo Nguk, Abul Bashar Sarker Mohammad, Ai Lian Lim Yvonne, Harun-Or-Rashid Md, Sakamoto Junichi
LAKU Management Sendirian Berhad, Sarawak, Malaysia.
Ministry of Health and Family Welfare, Dhaka, Bangladesh.
Nagoya J Med Sci. 2018 May;80(2):165-174. doi: 10.18999/nagjms.80.2.165.
Providing safe drinking-water to human civilization is indispensable; it is one of the most cost-effective means of reducing the disease burden of diarrhea. Unfortunately, water supply quality monitoring from public water treatment plants (WTPs) is often neglected or taken for granted. To determine the produced water quality, WTPs in Sarawak, Malaysia were assessed for their protozoa removal ability. A self-administered questionnaire based on the regulations in the Drinking-water Standards for New Zealand (DWSNZ) was developed. Optional 10-liter raw water samples were collected from willing WTPs for the detection of protozoan cysts. Routine physical and microbial testing of WTP parameters were also requested for raw water quality overview. Two of the nine assessed WTPs achieved three log credits in the treatment component, one of which belonged to Peninsular Malaysia. No log credits were obtained in the other tested components for any samples. Most of the WTPs employed "Coagulation, Sedimentation, and Filtration" using rapid gravity filters without enhancement ( < 0.05). cysts were detected in raw water sources used for treatment, and the geographical location was identified as an influencing factor for raw water quality. There is an urgent requirement for active collaboration and holistic approaches to review existing water management policies and interventions. WTPs in Sarawak did not achieve the log credits required to safeguard the microbial quality of the water supplied; however, only cysts were detected in 10-liter raw water samples despite routine microbial parameter monitoring showing disturbing contamination levels.
为人类文明提供安全饮用水是必不可少的；这是减轻腹泻疾病负担最具成本效益的手段之一。不幸的是，公共水处理厂（WTPs）的供水质量监测常常被忽视或视为理所当然。为了确定产水质量，对马来西亚砂拉越的水处理厂进行了原生动物去除能力评估。根据新西兰饮用水标准（DWSNZ）的规定编制了一份自填式问卷。从愿意参与的水处理厂采集了10升可选原水样本，用于检测原生动物囊肿。还要求对水处理厂参数进行常规物理和微生物检测，以概述原水质量。在评估的9个水处理厂中，有2个在处理环节获得了3个对数级的去除效果，其中1个属于马来西亚半岛。其他任何样本在其他测试环节均未获得对数级去除效果。大多数水处理厂采用“混凝、沉淀和过滤”工艺，使用快速重力过滤器且未进行强化（<0.05）。在用于处理的原水水源中检测到了囊肿，地理位置被确定为影响原水质量的一个因素。迫切需要积极合作并采取整体方法来审查现有的水资源管理政策和干预措施。砂拉越的水处理厂未达到保障所供应水的微生物质量所需的对数级去除效果；然而，尽管常规微生物参数监测显示污染水平令人不安，但在10升原水样本中仅检测到了囊肿。
