Drinking water Safety Cover Kandana Normal water Treatment Flower

 Essay about Water Basic safety Plan for Kandana Water Treatment Plant

Draft Water Safety Plan

To get

Kandana Water Treatment Grow

Step 1 :

Catchment and consumption


Surface area water: Kalu Ganga

Ability (Max. ): 60, 000 m3/day

Kalu Ganga

• Kalu Ganga is the second largest riv basin (2719 km2), beginning with central hills (2250m) and running throughout the wet zone.

• Primary sources of drinking water of the river are mountainous forests in the central region and the Sinharaja Forest Reserve.

• Most significant amount of water (4000 m3) is discharged towards the sea by Kalutara following travelling around Sabaragamuva (Ratnapura) and American (Horana, Mathugama, Kalutara) pays (129km).

• Upper portion of the basin has steep incline and reduce part features mild slope.

• Top part of the catchment is highly affected by intensive farming of long lasting export crops (Tea, Rubber, etc . ) and downtown centres.

• Middle portion is going through very well populated urban areas and export crop grown areas.

• Lower part is mainly troubled by paddy cultivation and also it truly is affected by overflow due to hydrological and topographical characteristics in the basin during southwest monsoon season.

um Extensive cleaning of organic vegetation

o Using agrochemical and various chemical manures

o Dropping urban solid waste

o Encroachment of Reservations

to Gem Puits & Cleansing

o Fine sand Mining


Total capability of Kandana Treatment Herb is 60, 000 m3/day.

• 500, 000 populations are maintained and supply areas are Horana, Bandaragama, Panadura, and Moratuwa.

• Drinking water abstraction stage is Kandana.

• Typical treatment method is highly processed.

Post Chlorination


Changing pH



Step two:

Typical Hazards and Hazardous Situations Identification


|Hazardous Incidents |Hazards | |Meteorology and weather habits |Flooding | | |rapid changes in source water top quality | |Seasonal variation |Changes in supply water quality | |Mining |Deterioration of water top quality | |Sand Mining |River bank chafing | |Gem Mining & washing |Lowering the river bed level | | |Blocking the flow pathways of the draining | |Agriculture |Microbial toxins, Pesticides, Weedicides, Nitrate, Phosphate | | |Slurry and dung growing | | |Disposal of dead animals | |Forestry |Pesticides, PAHs-poly aromatic hydrocarbons(fires) | |Industry (including small scale and |Chemical and microbes contamination | |sites) |Potential loss of source water as a result of contamination | |Transport-Roads and Railways |Pesticides, Chemicals...