Tripura State Pollution Control Board is conducting Water Quality Monitoring throughout the year. Water is collected from various pre-selected stations, lakes, ponds, rivers, etc.

Tripura State Pollution Control Board is executing National Water Quality Monitoring Programme (NWMP) comprising of 120 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 tracer elements are analysed once in a year to assess the water quality. The details regarding the 120 monitoring stations along with frequency of sampling and details of parameters analyzed are provided CLICK HERE.

The Laboratory Division of Tripura State Pollution Control Board is monitoring Waste Water Quality of ETPs, STPs, CETP & CSTP from different industries, health care establishments, hotels, etc. on monthly basis. To know the details of the industries, health care establishments, hotels, etc. please CLICK HERE.

The Laboratory Division of Tripura State Pollution Control Board is conducting surface water analysis (physiochemical & heavy metal) in idol immersion sites of Haora, Dhalai, Deo & Gumati river of Tripura during Durga Puja Festival as per the direction of Central Pollution Control Board to evaluate the nature & extent of pollution during the immersion. The water samples are collected during the durga puja festival at different intervals i.e. pre-immersion, during immersion and post immersion period. Pre & Post immersion water samples are collected a week before and after immersion while during immersion period samples are collected on the day of immersion activities. The analysis reports of water quality is listed below:

• ANALYTICAL RESULTS OF WATER SAMPLES COLLECTED FOR THE YEAR 2017
• ANALYTICAL RESULTS OF WATER SAMPLES COLLECTED FOR THE YEAR 2018
• ANALYTICAL RESULTS OF WATER SAMPLES COLLECTED FOR THE YEAR 2019
• ANALYTICAL RESULTS OF WATER SAMPLES COLLECTED FOR THE YEAR 2020
• ANALYTICAL RESULTS OF WATER SAMPLES COLLECTED FOR THE YEAR 2021

CPCB has identified polluted river stretches by statistically analyzing the water quality data under National Water quality monitoring programme for the year 2016 and 2017. The monitoring locations exceeding the water quality criteria are identified as polluted. The polluted locations in a continuous sequence are defined as polluted river stretches and categorized in five priority classes based on BOD concentration exceeding to BOD levels>30mg/l, BOD between 20&30mg/l, BOD between 10&20mg/l, BOD between 6-10mg/l and BOD between 3&6mg/l. The criteria for Priority V category monitoring locations having the BOD values between 3.0- 6.0 mg/l. In Tripura, following six nos. polluted river stretches have been identified, all in Priority-V class:

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.

• CPCB Standards for Surface Water
• Indian Standard for Drinking Water (BIS-2012)
• General Standards of discharge of Effluents