Basement and tunnel dewatering is the most common reason builders get CGWA notices. The contractor starts pumping early, and the owner pays the compensation.
What CGWA will look at in your plant
⛔NOC before diggingGet the NOC before excavation. Pumping without it attracts environmental compensation, minimum Rs 1 lakh.
📊Report and model, alwaysAny dewatering needs an Impact Assessment Report with a 5 km model, whatever the quantity, including the risk of ground settlement.
♻️Reuse the pumped waterUse it for curing, construction and dust control. Meter the discharge and keep records for two years.
🚿Building rulesSTP above 20,000 litres a day, dual plumbing, and porous tiles on parking areas.
🌆Over-exploited areasGroundwater for construction only if no treated sewage water is available within 10 km.
How we take you through it
Step 1Plan
Dewatering quantity and duration from the basement design.
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Step 2Model
Impact Assessment Report with the 5 km model.
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Step 3NOC
File and get the NOC before excavation.
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Step 4Monitor
Meter, piezometers and reuse until the basement is sealed.
Our work in this sector
- Delhi Dewatering management plan for a group housing project in Rohini
- Mumbai Dewatering management plan for a real estate project
- Andhra Pradesh Hydrogeological studies and groundwater model for an SEZ in Kakinada
- Karnataka Water neutrality study for an electronics city township in Bengaluru
Talk to a senior hydrogeologist WhatsApp us
Useful next steps
🧭NOC checkerDoes your project need a model? One minute.
📘NOC guideWhat to file, what to do after, what it costs to get it wrong.
🧮EC calculatorWhat pumping without a NOC would cost.
📨Got a notice?Free first review within one working day.
Rules summarised from the CGWA guidelines 2020 with the 2023 amendment. Some states regulate groundwater through their own authority; we confirm the position for your site.