Water safety plans for greywater in tribal schools, India

Traditionally, the regulatory approach to maintaining the quality and safety of drinking water has largely been a prescriptive one based on the ability of any given supply to meet standards set for a number of different chemical and biological parameters. There are a number of issues around the assumptions and the limitations of a sampling and analysis regime. The basis for such regimes is essentially reactive rather than proactive and, consequently, the cause of the concern may already have impacted consumers before any effective action can be taken. Environment and Sustainable Resource Development has developed a template for recording drinking water safety plans together with guidance notes to help complete them. The template has been developed in MS-Excel and has been designed in a straightforward step-wise manner with guidance on the completion of each sheet. It includes four main risk tables covering each main element of water supply which are pre-populated with commonly found ‘generic’ risks and these are carefully assessed before considering what action is required to deal with significant risks. Following completion of the risk tables, key risks are identified and the interventions required to bring them into control.

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Preparing for Success – Drinking Water Safety Plans and Lessons Learned from Alberta: Policy Considerations Contextualized for Small Systems

Global Issues in Water Policy - Water Policy and Governance in Canada ◽

10.1007/978-3-319-42806-2_17 ◽

2016 ◽

pp. 321-335 ◽

Cited By ~ 3

Author(s):

Megan Kot ◽

Heather Castleden ◽

Graham A. Gagnon

Keyword(s):

Drinking Water ◽

Lessons Learned ◽

Water Safety ◽

Small Systems ◽

Drinking Water Safety ◽

Water Safety Plans

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Water safety plans for small systems: a model for applying HACCP concepts for cost-effective monitoring in developing countries

Water Science & Technology ◽

10.2166/wst.2003.0198 ◽

2003 ◽

Vol 47 (3) ◽

pp. 215-220 ◽

Cited By ~ 13

Author(s):

G. Howard

Keyword(s):

Risk Factors ◽

Water Quality ◽

Cost Effective ◽

Control Measures ◽

Effective Control ◽

Performance Limits ◽

Water Safety ◽

Small Systems ◽

Water Safety Plans ◽

Contamination Events

The development of water safety plans (WSPs) for small systems should be based on a thorough understanding of the relationships between risk factors and contamination events. This can be achieved through the use of well-designed assessments of water quality that provide better evidence to support the identification of control measures, performance limits, monitoring parameters and verification procedures. Training of community operators is critical to the success of the WSP and the understanding gained from the assessments provides a sound basis for addressing these needs. The WSP approach provides for more effective control of water quality and the use of targeted assessments is cost-effective in improving the design of WSPs.

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National survey of utilization of continuous water quality monitors in water supply systems in Japan

Water Science & Technology Water Supply ◽

10.2166/ws.2019.006 ◽

2019 ◽

Vol 19 (5) ◽

pp. 1347-1353 ◽

Cited By ~ 3

Author(s):

K. Kosaka ◽

Y. Koike ◽

Y. Miyabayashi ◽

K. Saito ◽

M. Asami ◽

...

Keyword(s):

Water Quality ◽

Water Purification ◽

Water Quality Management ◽

High Sensitivity ◽

Water Supply Systems ◽

Sand Filtration ◽

Water Safety ◽

Critical Control Points ◽

Water Safety Plans ◽

Rapid Sand Filtration

Abstract An investigation of the utilization of water quality monitors at water purification plants throughout Japan was conducted via questionnaire from August to October 2015. The number of types of monitors installed at more than one water purification plant was 34. Chlorine, high sensitivity turbidity, pH, and turbidity monitors were (highly) recommended for installation in four water purification processes (rapid sand filtration, chlorination only, slow sand filtration and membrane treatment), except for high sensitivity turbidity of chlorination only. The number of installations of the monitors recommended and their installation points were dependent upon the processes. Highly recommended points of turbidity were raw water and sedimentation points, which were set for (critical) control points in water safety plans. That of high sensitivity turbidity was the rapid sand filtration point for confirmation of Cryptosporidium control. Chlorine monitors were applied for automatic control, regardless of the water purification processes. Some interesting monitors, such as those for musty odor compounds and trihalomethane, were newly developed and utilized. The results of this study showed that water quality monitors were important for water quality management systems based on water safety plans in Japan.

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