3 Lanka Rain Water Harvesting Forum

8/4/2019 3 Lanka Rain Water Harvesting Forum

1/20

Experience of Lanka Rain

Water Harvesting Forum

Tanuja Ariyananda

Lanka Rain Water Harvesting Forum


2/20

The Problem Almost all the districts in Sri Lanka face the dual problem

of

Floods - During Monsoon Drought -During dry months


3/20

COLLECTING RAINWATER WHENAND WHERE IT FALLS FOR USE

DURING DRYMONTHS

Storage

Recharging


4/20

Where can rain water harvesting

be used ? In Rural households where water is scare,

dry zone where ground water is mineralized

coastal belt where ground water is saline, ( tsunami

effected areas) hilly areas where ground water table is low where it is

not possible to extract ground water or have no otherwater sources

In urban areas where water is expensive, for washing, andgardening and to prevent local flooding

In public and commercial buildings with large use of water


5/20

Uses /Benefits of Rainwater Harvesting

Water supply (Domestic, Industrial &

Agriculture))

Water Saving, ( as supplementary

source)Flooding control,

Drought mitigation

Water quality control

Disaster prevention (fire fighting)

Ground water recharging

Improve quality of ground water

Energy saving


6/20

Lanka Rain Water HarvestingForum

Started by a small group in 1996

Membership from government, NGOs, Privateand public sector

Share experience and technology on RWH fordomestic use.


7/20

Problems faced by LRWHF

Lack of awareness of technology

Lack of skills on technology

High cost of tanksMisconception about Water quality

Lack of policy


8/20

Activities

Promotion through awareness programsdemonstration, media, video, symposium

Training

Research & DevelopmentNetworking and Sharing Information


9/20

CREATING AWARENESSthrough Demonstration

projectsin Districts


10/20

Training programs for Masons

, Technicians, Professionals

Training ofTrainers workshoMasons on construction


11/20

Research & Development

Low cost tanks

Improve water quality through filters, firstflush

Study User patterns

Use of rain water agriculture

Ground water recharging methods


12/20

Different Types of Tanks & Costs

5000 lit = Rs. 22,000

Under ground brick tank Above groundFerro cement

5000 lit = Rs. 28,000

1000-5000 lit = Rs. 8,000-45,0005000 lit = Rs. 12,000

Partial under ground tank Plastic Tank

Barrel tank

1200 lit = Rs. 1500

40 lit = Rs. 1000


13/20

Improve Water Quality

First Flush

Inlet Filter

Down pipe filter


14/20

User Pattern

0

10

2030

40

Drinking Cooking Washing Toilet otherConsumptioninlpcd

Beneficiary Non-Beneficiary


15/20

Home Gardening & Agriculture

Run off tanks


16/20

Ground Water Recharging

NATIONAL RAINWATER POLICY


17/20

NATIONAL RAINWATER POLICYAND STRATEGIES

June 2005

In the light of increasing operational and maintenance

costs to, rationalize investments ,both by Governmentand non Government sectors, in the field of pipe bornewater supply, drainage, flood control, soil conservationetc, and promote the practice on a RegionalCommunity and family basis, in order to ensure that the

City of tomorrow applies Rain water harvestingbroadly ,by the control of water near its source, in itspursuance of becoming a Green city in the future.

Policy Objectives


18/20

Identified benefits to the community Easy access to clean

drinking water

Less time spend oncollecting water

Skilled enhancement inthe village

Less reliance onexternal waterproviders

Safe water in high

fluoride areas More water security at

household level.

Better Sanitationpractice due to more

water available.


19/20

Lessons learned Awarness to Community and officials

was improtant at the initial stage Establishment of policy is useful in

obtaining official support Community contribution and involvement

is important since this creates a sense of

ownership Training on Operation and Maintenance

of the system is important for long termuse

Education on health & hygiene to the

comunity is important to ensure safedrinking water Improvment in technology > improved

water quality > acceptability. Introduction of simple water treatment

methods and water quality monitoring atHH level im roved use for drinkin


20/20

3 Lanka Rain Water Harvesting Forum

Documents

Transcript of 3 Lanka Rain Water Harvesting Forum