Department of Civil and Environmental Engineering, Tufts University, 200 College Avenue, Medford, MA, 02155, United States.
RISCON Solutions Ltd, 7 Ferry Road Office Park, Preston, PR2 2YH, Lancashire, United Kingdom.
Water Res. 2020 Mar 1;170:115288. doi: 10.1016/j.watres.2019.115288. Epub 2019 Nov 7.
Water Safety Plans (WSPs) are internationally recommended risk assessment and management strategies for water delivery. However, documented outcomes and impacts from implementing WSPs are lacking, particularly for community-managed supplies. In this research, previously implemented, community-managed WSPs were evaluated in four countries through a mixed-methods protocol assessing: WSP implementation quality, WSP management via key informant interviews (KII) and focus group discussions (FGD), household characteristics, and collection-point and stored household water quality in WSP and non-WSP communities. Overall, 256 KIIs and FGDs, 816 household surveys, and 1,099 water quality samples were completed. The quality of WSP implementations scored 6-13 out of 18 possible points. KIIs and FGDs found WSP communities had improved capacity to manage water supplies and identify key risks to safe water delivery. Fewer non-WSP community households reported paying for water in DRC and Vanuatu (p < 0.001). WSP community water collection-points had more E. coli contamination than non-WSP community collection-points in DRC (p = 0.009), Fiji (p = 0.020), and Vanuatu (p = 0.004); household results varied, although exploratory analysis revealed that non-WSP communities were imperfectly matched to WSP communities. Overall, we found: 1) incomplete WSP implementations; 2) small improvements in water supply operations; and, 3) no documented microbiological water quality improvements from WSPs. These results highlight that WSPs implemented in rural, community-managed supplies are challenging and question their effectiveness; if implemented additional technical and financial resources are necessary to support community-managed WSPs.
水安全计划(WSPs)是国际推荐的供水风险评估和管理策略。然而,缺乏实施 WSP 后的有记录的结果和影响,特别是对于社区管理的供水。在这项研究中,通过混合方法方案评估了四个国家中以前实施的社区管理的 WSP,评估内容包括:WSP 实施质量、通过关键知情人访谈(KII)和焦点小组讨论(FGD)进行的 WSP 管理、家庭特征以及 WSP 和非 WSP 社区的收集点和储存家庭水质。总体而言,完成了 256 次 KII 和 FGD、816 份家庭调查和 1099 份水质样本。WSP 实施的质量得分为 18 分中的 6-13 分。KII 和 FGD 发现,WSP 社区有能力改善供水管理并识别安全供水的关键风险。在刚果民主共和国和瓦努阿图,较少的非 WSP 社区家庭报告支付水费(p < 0.001)。在刚果民主共和国(p = 0.009)、斐济(p = 0.020)和瓦努阿图(p = 0.004),WSP 社区的水源采集点的大肠杆菌污染比非 WSP 社区的采集点更多;家庭结果有所不同,尽管探索性分析表明,非 WSP 社区与 WSP 社区不完全匹配。总的来说,我们发现:1)WSP 实施不完整;2)供水运营略有改善;3)WSP 未记录水质微生物学改善。这些结果表明,在农村社区管理的供水系统中实施 WSP 具有挑战性,并质疑其有效性;如果实施,需要额外的技术和财务资源来支持社区管理的 WSP。