Risk Assessment for Safe Drinking Water Supplies - Global Drinking Water Management and Conservation - page 120

(a) A System Assessment: this component is a preliminary check to see if the
drinking water supply chain as a whole is capable of supplying water of
suf

ciently high standard to meet regulatory targets of the country.
(b) Operational Monitoring: the higher order identi cation of the existence of

control measures in the drinking water system.
(c) Management Plans: the documentation of system assessment and actions taken
during various operational conditions; it also de nes monitoring and com-

munication plans.

The breakdown of these three components is described in Fig. 6.2 . After setting
up the Water Safety Plan implementation team and describing the supply system,
the most important step is

The WSP team would
consider all potential biological, physical, chemical, and radiological hazards that
could be associated with the water supply. At each step, the objective is to identify
where and what kind of contamination could happen and what are the set of actions
that can be utilized to control each hazard. For example, the hazards may be due to
variations in extreme rainfall events or major storms. The hazard may be due to
accidental or deliberate acts of contamination at either the drinking water treatment
plant or at the wastewater treatment plant that could compromise sanitation and
hygiene.

“ conducting hazard analysis. ”

* Development of
Water Safety
Plan

Assemble WSP
Team

Describe Water
Supply

System
Assessment

Reviewing
Experience
and Future
Needs

Conduct Hazard
Analysis

Identify Control
Measures

Supporting
Programmes

Define Controls and
Barriers

Operational
Monitoring

Monitoring

Corrective Actions and
Incident Response Review,

Approval and
Audit

Management &
Communication

Record Keeping

Validation and
Verification

Fig. 6.2 Schematic overview of the WHO water safety plan components