Tripura State Pollution Control Board


Water Quality Monitoring is done by the Tripura State Pollution Control Board throughout the year. Water is collected from various pre-selected stations, lakes, ponds, rivers, etc. List of Parameters and Methods of Analysis
A) Physical Parameters
Sl.No. Parameters Methods
1 Color Visible Comparison Method (only potable water)
2 Conductivity Conductivity meter
3 pH Value pH meter
4 Suspended Solids (Total number Filterable) Membrane filter apparatus (Millipore vacuum filtration apparatus)
5 Settleable Solids Imhoff concentration: By Volume (mg/L)
6 Sludge Volume Index Imhoff concentration: Membrane filter apparatus or Gooch crucible
7 Total Solids Gravimetric
8 Temperature Thermometer
9 Turbidity Nephelometric
B) Chemical Parameters
Sl.No. Parameters Methods
1 Acidity a. Electrometric/Potentiometric titration b. Color Indicator titration
2 Alkalinity a. Electrometric/Potentiometric titration b. Color Indicator titration
3 Ammonical Nitrogen a. Distillation followed by colorimetric method (Nesselerization) b. Distillation followed by titrimetric method
4 Arsenic Atomic absorption photometric with Mercury Hydride Generation (MHS- 15)
5 Boron UV-VIS Spectrophotometer
6 Carbon Dioxide Titrimetric
7 Cadmium Atomic Absorption Spectrophotometer
8 Chemical Oxygen Demand Dichromate Reflux
9 Biochemical Oxygen Demand Five day BOD at 27 degree Celcius
10 Chloride Titrimetric (Argentometric)
11 Chloride Residual Titrimetric
12 Calcium Titrimetric (EDTA)
13 Chromium a. Atomic Absorption Spectrophotometer (For Total) b. Colorometric (Diphenylcarbazide) (For hexavalent, trivalent and total)
14 Copper Atomic Absorption Spectrophotometer
15 Dissolved Oxygen Winkler titrimetric-azide-modification (Iodometric)
16 Fluoride a. Distillation followed by Colorimetric (SPADNS)
17 Hardness Total Titrimetric (EDTA)
18 Iron a. Atomic Absorption Spectrophotometer b. Phenanthroline Method
19 Lead Atomic Absorption Spectrophotometer
20 Manganese Atomic Absorption Spectrophotometer (Total)
21 Nitrite Nirogen U.V. Spectrophotometric Screening
22 Nitrate Nitrogen Colorimetric
23 Oil & Grease Gravimetric (Simple Extraction)
24 Phosphate Stannous-Chloride Method
25 Phenols Chloroform extraction
26 Potassium Atomic Absorption Spectrophotometer
27 Sodium Atomic Absorption Spectrophotometer
28 Sulphite Titrimetric (Iodometric)
29 Sulphate Turbidimetric
30 Zinc Atomic Absorption Spectrophotometer
C) Bacteriological Parameters
Sl.No. Parameters Methods
1 Total Coliform Multiple Tube Dilution Technique
1 Fecal Coliform Multiple Tube Dilution Technique
D) (i) Bio-Monitoring: The use of living things to detect changes in the environment is called bio-monitoring. Both the occurance of bio-accumulator and biological effects has often demonstrated useful and reliable information on the State environment. Bio-monitoring methods are chaeaper, precise and sensitive to detect adverse conditions in the environment. Both natural and artificial substratum methods are so far being used for bio-monitoring. The Tripura State Pollution Control Board has already started bio-monitoring in regular water quality monitoring programme being conducted under the Monitoring of Indian National Aquatic River System. Some more projects under the guidance of CPCB are undergoing in the bio-monitoring laboratory. The list of parameters studied so far are:
Sl.No. Parameters Methods
1 Saprobatic Index Natural Substratum – Artificial Substratum
2 Diversity Index Natural Substratum – Artificial Substratum
3 P/R Ratio
2. Lists of Available Instruments Used For Analysis
Sl.No. Name of Instrument
1 B.O.D. Incubator
2 Bacteriological Incubator
3 Conductivity Meter (Digital)
4 Flame Photometer
5 Hot Air Oven
6 Nephlometer/Turbidity Meter (Digital)
7 Atomic Absorption Spectrophotometer with Mercury Hydride Generation (MHS-15) made by Perkin Elmer (AAS-700)
8 Automatic Kjeldhl Analyser
9 Sound Level Meter
10 pH meter
11 Analytical Balance
12 Muffle Furnace
13 Deep Freezer
14 UV-Spectrophotometer
15 Autoclave
16 Merck Millipore Water Purification Systems
17 Laminar Air Flow
18 Colony Counter
3. National Water Monitoring Programme (NWMP) Tripura State Pollution Control Board is executing National Water Quality Monitoring Programme (NWMP) comprising of 63 stations in the State in collaboration with Central Pollution Control Board. The monitoring is being done on monthly basis in selected stretches of rivers/ponds/lakes. The monitoring is being done on half-yearly basis for the ground water samples. The monitoring includes physico-chemical and bacteriological parameters along wioth filed observations. Besides this, 8 trace are analysed once in a year to assess the water quality. The details regarding the 63 monitoring stations along with frequency of sampling and details of parameters analyzed are provided CLICK HERE.
4. Analysis of Other Water Samples The Board is analysing the other surface water as well as ground samples on complaint basis. The industrial waste water samples are being collected from water polluting industrial unit located in the State. The Board is extending support to other Government Departments, private organizations, research organizations by analyzing the water samples received from them for the purpose of drinking, construction, research works, etc. The details regarding the analysis is provided below:
Sl.No. Source of Water Purpose Parameters Analysed
1 Tap water, Reservoir, Raw and untreated water, Filtered water, Deep Tube well, Drilled Underground water Drinking pH, Conductivity, Chlorides, Alkalinity, Total Hardness, Fe, NO3, Total Coliform.
2 Industry Quality of Industrial effluent Parameters prescribed as per consent conditions.
3 Stream water, river water, Dam river Research DO, BOD, COD, Total Coliform, FC, PO4, pH, Turbidity, SO4, Heavy Metals, Cl-, Total Hardness, Ca, Mg etc.
4 River Consultancy Heavy Metals
5 Municipal dumping ground Leachate Quality of Municipal Dumping Ground pH, TDS, TSS, BOD, COD, NH4, Total Kjeldahl Nitrogen, Cl-, Heavy Metals.
6 Central Pollution Control Board Analytical Quality Control Temperature, pH, conductivity, Turbidity, Velocity of Flow, DO, BOD, Total Kjeldahl Nitrogen, NO3, NO2, Total Coliform, Fecal Coliform, Cl-, Hardness, Ca, Mg, Alkalinity, SO4, Na, COD, TDS, Fixed dissolved solids, PO4, Boron.
5. Standards & Protocols For details list of Standards & Protocols CLICK HERE.
6. Analysis Charges The details of Analysis Charges,as decided by the appropriate Authority of Tripura State Pollution Control Board is provided here. Please CLICK HERE.
7. Reports on Water Quality Listed below are some of the Reports on Water Quality developed by the Tripura State Pollution Control Board
  • Environmental Status of Six Tourist Spot of Tripura, 2017
  • Environmental Status at Kamalpur Degree College, 2016
  • Environmental Status at MBB College, 2016
  • Environmental Status at Ramthakur College, 2016
  • Water Quality Status at Kalyan Sagar, 2015
  • Gomati River – 2012
  • Haora River – 2010

Public Complaint

1. Sri Bishu Karmakar,
Member Secretary (9436169779)

2. Smt. Aparajita Das,
Asst. Env. Engineer (9436469990)

3. Sri Dipak Rudra Paul,
Junior Scientist (8729920336)


Tripura State Pollution Control Board
Parivesh Bhawan, P.N. Complex,Gorkhabasti, P.O. Kunjaban, Agartala, Tripura-799006
Phone: 0381 2312589

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