Obtaining the goals
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Identify realistic future use of all water bodies
– drinking water, irrigation water, livestock
watering, bathing, fishing, recipient for wastewater
Set corresponding requirements to quality
(levels of constituents and charateristics such as
temperature and pH)
Coordinate requirements to quality with flow
variations (environmental flows)
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Monitor water quality and variations (daily,
seasonal, annual)
Focus monitoring program on constituents
which relate to the quality objectives
Interpretation of monitoring results
Revisit the WQ goals and objectives for reality
checks in the light of the monitoring results
Make tentative assessments of corresponding
pollution control requirements
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Point source discharges - quantity and quality
of wastewater (variations, constituents,
characteristics)
Monitor variations in the perspective of the
flow of the recipient
Inventorise all point sources and their origin
(e.g. urban wastewater, industrial wastewater)
Inventorise all non-point sources (e.g unsewered
sanitation, agrochemicals, nutrients)
Estimate quantities of pollutants from nonpoint sources and variations over time
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Establish water flows and flow variations over
time
Establish mass balances, dilution potential and
assimulation capacity
Combine source information and recipient
characteristics to estimate the need for
pollution control under different scenario
assumptions
Revisit WQ goals
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Sewage treatment – waste stabilization ponds,
mechanical, biological, chemical treatment)
Separation of storm drainage system and
wastewater system, changes in overflow
conditions
Engineered wetlands, root-zone treatment
Recycling and cleaner technologies
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Scenarios for development
Future pollution sources and loads (point and
non-point)
WQ scenarios
Technology application and load reductions
Simulation of future WQ situation
Management system adjustments (enabling
environment, institutional roles, management
tools)
Implementation, monitoring and evaluation