North Region South Region North Region South Region
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• • • • • • • RECOMMENDED RAW WATER QUALITY CRITERIA BY MOH NO. PARAMETERS COLUMN I COLUMN II ACCEPTABLE VALUE SOURCE OF REFERENCE mg/L (unless otherwise stated) GROUP I MICROBIOLOGICAL 1 TOTAL COLIFORM 5,000 MPN/100ml or cfu/100ml WHO1 2 E.COLI 5,000 MPN/100ml or cfu/100ml WHO1 PHYSICAL 3 TURBIDITY 1,000 NTU WHO2 4 COLOUR 300 TCU WHO1 5 pH 5.5 – 9.0 MAL GROUP II 1 TOTAL DISSOLVED SOLIDS 1,500 WHO1 2 BIOLOGICAL OXYGEN DEMAND 6 WHO1 3 CHEMICAL OXYGEN DEMAND 10 WHO1 4 CHLORIDE (Cl) 250 MAL 5 ALUMINIUM (Al) 1.0 MAL 6 ANIONIC DETERGENT MBAS 1.0 WHO1 7 AMMONIA (as N) 1.5 WHO1 8 NITRATE (as N) 10 MAL 9 IRON (Fe) 1.0 MAL 10 FLUORIDE (Fl) 1.5 WHO1 11 HARDNESS 500 MAL 12 MANGANESE (Mg) 0.20 WHO1 NO. PARAMETERS COLUMN I COLUMN II ACCEPTABLE VALUE SOURCE OF REFERENCE mg/L (unless otherwise stated) GROUP III 1 MERCURY (Hg) 0.001 MAL 2 CADMIUM (Cd) 0.003 MAL 3 SELENIUM (Se) 0.010 WHO1 4 ARSENIC (As) 0.010 MAL 5 CYANIDE (Cn) 0.07 MAL 6 LEAD (Pb) 0.050 MAL 7 CHROMIUM (Cr) 0.050 WHO1 8 SILVER (Ag) 0.050 MAL 9 COPPER (Cu) 1.000 MAL 10 MAGNESIUM (Mg) 150.00 MAL 11 SODIUM (Na) 200 MAL 12 ZINC (Zn) 3.000 MAL 13 SULPHATE (SO4) 250 MAL 14 MINERAL OIL 0.3 MAL 15 PHENOL 0.002 WHO1 GROUP IV ORGANOCHLORINE PESTICIDES: 1 ALDRIN/DIELDRIN 0.00003 MAL/WHO4 2 DDT 0.002 MAL 3 HEPTACHLOR & HEPTACHLOR EPOXIDE 0.00003 MAL 4 METHOXYCHLOR 0.02 MAL NON-ORGANOCHLORINE PESTICIDES: 5 HEXACHLOROBENZENE 0.001 MAL 6 LINDANE 0.002 MAL 7 CHLORDANE 0.0002 MAL HERBICIDES: 8 2,4-D (DICHLOROPHENOXYACETIC) 0.03 MAL GROUP V RADIOACTIVITY: 1 Gross Alpha 0.1 Bq/l 2 Gross Beta 1.0Bq/l RECOMMENDED RAW WATER QUALITY CRITERIA BY MONO. PARAMETERS COLUMN I COLUMN II ACCEPTABLE VALUE SOURCE OF REFERENCE mg/L (unless otherwise stated) GROUP I MICROBIOLOGICAL 1 TOTAL COLIFORM 5,000 MPN/100ml or cfu/100ml WHO1 2 E.COLI 5,000 MPN/100ml or cfu/100ml WHO1 PHYSICAL 3 TURBIDITY 1,000 NTU WHO2 4 COLOUR 300 TCU WHO1 5 pH 5.5 – 9.0 MAL GROUP II 1 TOTAL DISSOLVED SOLIDS 1,500 WHO1 2 BIOLOGICAL OXYGEN DEMAND 6 WHO1 3 CHEMICAL OXYGEN DEMAND 10 WHO1 4 CHLORIDE (Cl) 250 MAL 5 ALUMINIUM (Al) 1.0 MAL 6 ANIONIC DETERGENT MBAS 1.0 WHO1 7 AMMONIA (as N) 1.5 WHO1 8 NITRATE (as N) 10 MAL 9 IRON (Fe) 1.0 MAL 10 FLUORIDE (Fl) 1.5 WHO1 11 HARDNESS 500 MAL 12 MANGANESE (Mg) 0.20 WHO1 NO. PARAMETERS COLUMN I COLACCEPTABLE VALUE SOURREFEmg/L (unless otherwise stated) GROUP III 1 MERCURY (Hg) 0.001 M2 CADMIUM (Cd) 0.003 M3 SELENIUM (Se) 0.010 W4 ARSENIC (As) 0.010 M5 CYANIDE (Cn) 0.07 M6 LEAD (Pb) 0.050 M7 CHROMIUM (Cr) 0.050 W8 SILVER (Ag) 0.050 M9 COPPER (Cu) 1.000 M10 MAGNESIUM (Mg) 150.00 M11 SODIUM (Na) 200 M12 ZINC (Zn) 3.000 M13 SULPHATE (SO4) 250 M14 MINERAL OIL 0.3 M15 PHENOL 0.002 WGROUP IV ORGANOCHLORINE PESTICIDES: 1 ALDRIN/DIELDRIN 0.00003 MAL/2 DDT 0.002 M3 HEPTACHLOR & HEPTACHLOR EPOXIDE 0.00003 M4 METHOXYCHLOR 0.02 MNON-ORGANOCHLORINE PESTICIDES: 5 HEXACHLOROBENZENE 0.001 M6 LINDANE 0.002 M7 CHLORDANE 0.0002 MHERBICIDES: 8 2,4-D (DICHLOROPHENOXYACETIC) 0.03 MGROUP V RADIOACTIVITY: 1 Gross Alpha 0.1 Bq/l 2 Gross Beta 1.0Bq/l • • • •
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• • • • • • • • • • • • • • • • • • • • • • • • • Water inlet Min water level Sand Sodium fluoride To clean water tank Dosing pump Depth Stick
Residuals from sedimentation tank cleaning Sedimentation tank desludging system Backwash from the filters • • • • • • • ✓ ✓ ✓ ✓ ✓ ✓ ✓
Integration of WTP’s SCADA to Intelligent Command Centre (ICC) for monitoring purpose. Water Treatment Plant monitoring from ICC
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KAWASAN TADAHAN AIR Parameter Turbidity (NTU) Odour (TON) Ammonia (mg/L) MOH Limit max 1000 objectionable max 1.5 WTP I II III III I II III LANGAT Sg. Semenyih 5,000 - 8,000 8,001 - 10,000 >10,000 Untuk sebarang bacaan TON 1.0 - 1.5 1.5 - 3.0 >3.0 Semenyih 2 100 -500 501 - 1000 >1,000 1.0 - 1.5 1.5 - 3.0 >3.0 KAWASAN TADAHAN AIR Parameter Manganese (mg/L) pH (for acidic) pH (for alkaline) MOH Limit max 0.2 (Dissolved) 5.5 - 9.0 5.5 - 9.0 WTP I II III I II III I II III LANGAT Sg. Semenyih 0.15 - 0.25 0.26 - 0.49 ≥0.5 6.0 - 6.4 5.6 - 5.9 <5.5 7.5 - 8.0 8.0 - 9.0 >9.0 Semenyih 2 0.15 - 0.25 0.26 - 0.49 ≥0.5 6.0 - 6.4 5.6 - 5.9 <5.5 7.5 - 8.0 8.0 - 9.0 >9.0
