Water Quality Status Vs Industrial
Wastewater Management in Sri Lanka
Dr. R.M.S.K. Ratnayake
Director / Environmental Pollution Control Unit
Central Environmental Authority
Sri LankaContent

Major Water Bodies and Water Quality Status



Pollutants & Sources

Major Industry Sectors & Categories

Industrial Wastewater Management in SL

Challenges in Wastewater Management

Water Quality monitoring results in selected rivers Vs
proposed ambient water quality standards by CEARiver nameKelani

Mahaweli

Mahaoya

Proposed ambient standards by CEA

Sampling point

Kaduwela

Peradeniya

MawanellaClass 2Bathing

Month/Year

June 2010

January 2011
(four times)

November 2011
(four times)

Class 1
Drinking(withsimpletreatment*1)

Class 2
Fishandaquaculture

Class 2
Drinking(with conventionaltreatment*2)

BOD (mg/L)

2.5

5-10

4-5

34

45

COD (mg/L)

12.6

15-20

1015201530

Total Coli form
(MPN/100mL)

13,000-1705001,000

20,0005,000

NO3(mg/L)*3

N/A

N/A

0.47

5555PO4(mg/L)*4

N/A

N/A

<0.01

0.7

0.7

0.4

0.7(Notes)*1. Only boiling and no chemical treatment*2. Treated by filtration and chlorination*3. Proposed ambient standards are for NO3-N*4. Proposed ambient standards are for PO4-P(Source: Provided by CEA, based on results of water quality monitoring conducted by CEA) extracted from WEPA outlook 2012

Water Quality monitoring results in selected lakes Vs
proposed ambient water quality standards by CEA
BolgodaKandy

Gregory

Proposed ambient standards by CEACentre of the lake

Average from4 locations

Centre of the lake

Class 1
Drinking(with simple
treatment*1)

Class 2Bathing

Class 2
Fishaquaculture

Lake Name
Sampling pointandClass 2Drinking(with conventionaltreatment*2)

Month/YearFeb 2011

Jan 2011

Dec 2009

BOD (mg/L)

28.4

33445

COD (mg/L)

1245.6

1515

20

1530

DO(mg/L)

6.9

4.6

665

3

4NO3(mg/L)*3

N/A

N/A

0.96

5555PO4(mg/L)*4

N/A

N/A

0.02

0.7

0.7

0.4

0.7(Notes)*1. Only boiling and no chemical treatment*2. Treated by filtration and chlorination*3. Proposed ambient standards are for NO3-N*4. Proposed ambient standards are for PO4-P(Source: Provided by CEA, based on results of water quality monitoring conducted by CEA) extracted from WEPA outlook 2012

Pollutants & Sources
Untreated wastewater discharge Domestic
 Industrial
 Haphazard dumping of solid waste.
 Agricultural run off Agro chemicals
 Fertilizers
 Sand mining activities
 Unplanned development activities


Major Industry Sectors & Categories











TextileFood & Beverages
Alcohol & Alcoholic Beverages
ChemicalDairyTanningRubber
Agrochemical and fertilizer
Health care centres
Transport & Vehicle service
Paper & Pulp

Factories located in Kelani River basin(monitored by the CEA)


Coca cola Beverages ( Kaduwela)
Ceylon Leather Products ( Mattakkuliya )Ceylon Cold Stores - Beverages (Ranala)
Sapugaskanda Power Plant (Heiyanthuduwa)
New Zealand Milk Products (Biyagama)
Oil Refinary (Biyagama)
Manchester Yarn Thread (Kaduwela)
Lion Brewery (Biyagama)
Lindel Industrial Estate (Sapugaskanda)
Lanka Tiles (Ranala)
Nit Fin Ltd (Kapugoda)
Ole Spring - water bottling ( Ranala)Oil Installation (Kolonnawa)
South Asian Textile (Pugoda)
Auspray Clothing (Ranala)
Seethawaka Industrial Zone (Seethawaka)
Sultan Leather (Wattala)Tan Lanka (Hendala)
Tank Farm - oil storage (orugodawatte)
Texpro - textile
Nelna Farm (Pugoda)Industrial Wastewater Management in
Sri Lanka
National Environmental Act No. 47 of 1980.

Part IV - Environmental Management and Protection
Part IV A- Environment Protection
Environment Protection Licence (EPL) Procedure
Hazardous Waste Management Licence (HWML)
procedurePart IV B- Environment Quality
Environmental Standards for Emissions(Wastewater, Noise, Air emission, Vibration)
Part IV C- Environment Management
Environmental Impact Assessment (EIA),
Strategic Environmental Assessment (SEA)

Industrial Survey 2009-2011
Data updated in 2013
A Category

B Category

Industries in Western
Province –A
category

1

Number of Industries

9306

13694

4309

2

Industries having EPL

4819

5704

2660

3

EPL processing

1736

1528

401

4

No EPL

2316

5452

1087

5

Industry closed

435

1010

161

Island wide wastewater Treatment Plants
established & commissioned up to August2012 (based on sectors)
Industry sector & categories

Number1

Chemical382Food & Beverages

71

3Alcohol & Alcoholic Beverages

104

Metal Finishing & Surface Treatment

125Dairy

14

6Textile

31

7Tanning04

8

Rubber45

9Agrochemical

13

10

Pharmaceutical07

11

Clay, Glass & Ceramic

10

12

Health04

13

Transport & Vehicle service

220

14

Paper & Pulp

02

15

Sewerage / leachate / common WWTP

17

Challenges in Wastewater Management
Financial issues in small and medium enterprises
for pollution control
 Lack of low cost pollution control technologies
 Financial & administration constraint forimplementation new pollution control strategies
 Weaknesses in law enforcement Lack of sewage network facility at least for
populated cities Unavailability of proper zoning plans in local
government authorities
THANK YOU!