Buying Industrial Land? Check These Groundwater Risks Before Purchase
- Dr. Anubhav Gupta
- 11 minutes ago
- 11 min read
Industrial land is usually evaluated on obvious parameters:
location;
highway access;
electricity;
labour;
logistics;
land cost;
statutory land use;
proximity to customers and suppliers.
But for many manufacturing projects, one of the most important questions is asked too late:
Where will the factory's water actually come from?
This can become a serious problem after the land has already been purchased.
A site may have:
neighbouring borewells;
apparently good groundwater yield;
large industrial plots;
existing factories;
and still be unsuitable for the proposed project's long-term water strategy.
The reason is simple:
physical availability of groundwater
is not the same as
regulatory permission to abstract groundwater
and neither is the same as
long-term sustainable industrial water availability.
Groundwater regulation in India is administered through both Central and State mechanisms. CGWB currently states that CGWA regulates groundwater abstraction in 20 States/UTs, while other States use their own groundwater authorities or statutory frameworks.
That means groundwater due diligence should be completed before industrial land purchase, not after the plant DPR has been frozen.
For the wider regulatory framework, see SARK's Groundwater Regulatory Intelligence for Industries.
Why Groundwater Should Be Part of Industrial Land Due Diligence
A factory can usually adapt to many project variables.
It can change:
equipment supplier;
building layout;
utility configuration;
logistics route.
But water-source problems can be far more difficult.
If a project discovers after land purchase that:
a new industrial borewell is restricted;
permitted groundwater quantity is insufficient;
groundwater quality requires expensive treatment;
industrial water supply does not reach the site;
wastewater reuse must be much higher than originally planned;
the complete project economics can change.
The additional cost may include:
external water pipelines;
tankers;
large storage tanks;
tertiary treatment;
RO;
ZLD;
ETP/STP upgrades;
cooling optimisation;
rainwater-storage infrastructure.
That is why groundwater should be considered a project-feasibility parameter.
Check the Exact Groundwater Assessment Unit
Do not begin with a broad question such as:
“Is groundwater available in this district?”
Groundwater classification is generally determined at assessment-unit level, which may correspond to blocks, tehsils, talukas, urban units or other administrative/hydrogeological units depending on the State.
The correct sequence is:
site coordinates
→ district
→ assessment unit
→ latest groundwater classification
→ competent groundwater authority
→ project-specific regulatory position
For a detailed explanation of classification, see:
Why the Groundwater Category Matters
Assessment units are commonly classified as:
Safe;
Semi-Critical;
Critical;
Over-Exploited.
These categories broadly indicate the pressure on the groundwater resource.
An Over-Exploited category does not mean there is physically no water underground.
It means groundwater extraction has exceeded the assessed annual extractable groundwater resource.
That distinction is crucial.
A borewell can still produce substantial water in an Over-Exploited area while the regulatory framework substantially limits additional industrial abstraction.
For the commercial implications, read:
and:
Can a New Factory Install a Borewell in an Over-Exploited Area?.
Do Not Assume Nearby Borewells Mean Your Borewell Will Be Allowed
This is one of the most common mistakes during site selection.
A land broker or neighbouring industrial unit may say:
“Every factory here has a borewell.”
That information is not sufficient.
Nearby borewells may:
belong to older industries;
have historic permissions;
fall under previous regulatory conditions;
serve domestic rather than process requirements;
be agricultural wells;
belong to a different project category.
The proposed new factory must establish its own regulatory eligibility.
The presence of a physical borewell is not proof of permission for new industrial abstraction.
Identify the Correct Groundwater Regulator
Industrial groundwater regulation is not identical throughout India.
CGWB states that CGWA regulates groundwater in 20 States/UTs, while several States regulate groundwater through their own Acts or designated authorities.
Therefore, before buying land, determine:
Is the Project Under CGWA?
If yes, current CGWA guidelines and NOC requirements apply.
Is There a State Groundwater Authority?
If yes, State legislation and notifications may materially alter the position.
For example, Uttar Pradesh operates its own Ground Water Department portal and processes applications by district, block and user category.
This is why generic internet searches such as:
“Can industries drill borewells in India?”
are not enough for an investment decision.
Calculate the Factory's Real Water Requirement Before Buying Land
This is arguably the most important engineering step.
Do not calculate:
production capacity
→ gross water demand
→ same quantity from borewell.
Instead determine:
What is the minimum technically practical external freshwater demand of the proposed plant?
Prepare a preliminary industrial water balance.
Freshwater Uses
Estimate:
process;
cooling;
boiler;
washing;
domestic;
utilities;
horticulture.
Internal Recovery
Then estimate:
condensate recovery;
ETP reuse;
STP reuse;
process recycling;
cooling-water optimisation;
RO recovery.
External Sources
Finally determine how the remaining freshwater demand can be met through:
groundwater;
industrial water supply;
municipal water;
surface water;
reclaimed sewage;
other authorised supply.
This is where Industrial Water Audit and Water Balance expertise becomes relevant even for a greenfield project.
Gross Water Requirement and Groundwater Requirement Are Not the Same
Suppose a proposed factory has a gross circulation requirement of:
250 KLD
A superficial project report might assume:
Groundwater requirement = 250 KLD
But suppose the project can achieve:
condensate recovery: 25 KLD;
STP reuse: 20 KLD;
ETP reuse: 40 KLD;
cooling optimisation: 25 KLD;
process recycle: 20 KLD.
The actual external freshwater requirement may be closer to:
120 KLD
That difference can completely change:
groundwater regulatory position;
water-treatment CAPEX;
pipeline sizing;
project feasibility.
Check Whether Public or Industrial Water Supply Exists
Groundwater should not be evaluated in isolation.
Before land purchase, investigate:
industrial development authority supply;
municipal supply;
canal/surface-water supply;
common industrial pipelines;
reclaimed municipal wastewater;
nearby CETP/reuse networks.
For each source, evaluate:
quantity
quality
reliability
tariff
pipeline distance
storage requirement.
A site with slightly higher land cost but secure authorised industrial water can be much more valuable than cheaper land dependent on uncertain groundwater.
Water Availability Should Be Verified, Not Assumed From Brochures
Industrial estates may advertise water availability.
But the project should verify:
current supply capacity;
sanctioned quantity;
pressure;
hours of supply;
connection cost;
augmentation plans;
waiting period;
water quality.
For a water-intensive plant, written or technically verifiable supply information is far more valuable than a verbal assurance.
Groundwater Quality Can Make a Good-Yield Borewell Economically Poor
Groundwater quantity is only half of the question.
Water quality can materially change the economics of:
boilers;
cooling towers;
RO;
process water;
product quality.
Important parameters may include:
TDS;
hardness;
alkalinity;
chloride;
sulphate;
silica;
iron;
fluoride;
nitrate;
salinity;
project-specific contaminants.
A high-yield borewell with high TDS can require:
RO;
pretreatment;
increased chemical consumption;
more reject handling;
lower water recovery.
Therefore:
groundwater yield does not equal usable industrial-water yield.
A Test Borewell Does Not Establish Long-Term Sustainability
Another common mistake is relying heavily on a successful test borewell.
A borewell yield test can tell you something about current well performance.
It does not necessarily establish:
long-term aquifer response;
neighbouring abstraction;
seasonal decline;
cumulative groundwater stress;
regulatory permission.
The stronger question is:
Can the aquifer and regulatory framework support the required withdrawal over the operating life of the project?
Large projects may need more detailed hydrogeological assessment.
CGWB currently states that projects exceeding specified abstraction thresholds must submit an impact-assessment and groundwater-modelling study covering a 5 km radius around the project site, prepared by accredited consultants. The current thresholds include more than 100 m³/day in Over-Exploited, Critical and Semi-Critical areas, with higher thresholds for Safe assessment units depending on aquifer type.
For methodology:
Check Whether Groundwater Impact Assessment Could Be Triggered
This should be understood before the project's water demand is frozen.
For higher groundwater abstractions, the project may need:
hydrocensus;
groundwater levels;
aquifer assessment;
surrounding-well data;
pumping/aquifer testing;
groundwater modelling;
drawdown assessment;
mitigation and monitoring.
If that work changes the viable abstraction quantity, the project water architecture may also need to change.
Read:
Check the Water Requirement at Future Production Capacity
A factory should not be evaluated only at Year 1 production.
Suppose:
Phase 1
Production: 50 TPDFreshwater: 100 KLD
Phase 2
Production: 100 TPDProjected freshwater: 180 KLD
The site may be perfectly workable for Phase 1 but incapable of supporting Phase 2 through groundwater.
That can create an expensive growth constraint.
Before land purchase, evaluate:
initial production;
planned expansion;
ultimate installed capacity;
future workforce;
additional cooling;
boiler expansion;
process changes.
Water due diligence should therefore answer:
Can the site support the factory we intend to become—not merely the factory we intend to start with?
Future Groundwater Classification Can Also Change
Groundwater categories are periodically reassessed.
A block that is Safe today may not remain Safe indefinitely.
This does not mean the project should attempt to predict future regulatory classification precisely.
It means the factory should avoid a water strategy with no resilience.
A diversified water strategy is stronger than:
100% borewell dependency.
What If the Site Is Already in an Over-Exploited Area?
That does not automatically mean the site is commercially unusable.
It means groundwater cannot simply be assumed.
The project should ask:
Is new industrial groundwater abstraction permissible?
What quantity may be feasible?
What external water exists?
How low can freshwater demand be engineered?
How much treated wastewater can be reused?
Can production expansion occur without increased groundwater?
For the full engineering response:
Check Rainwater Potential—but Do Not Overestimate It
Large industrial roofs can generate substantial seasonal runoff.
A preliminary estimate can use:
Rainfall × Catchment Area × Runoff Coefficient
For example, a factory with:
50,000 m² roof area
may generate meaningful seasonal water volumes.
But actual usable water depends on:
rainfall distribution;
first flush;
storage;
contamination;
overflow;
demand timing.
Rainwater can strengthen the project water architecture.
It should not be treated as guaranteed year-round supply.
Rainwater Recharge Does Not Automatically Create Groundwater Entitlement
Another common misconception is:
“If we recharge groundwater, we can abstract the same quantity.”
Groundwater recharge is not a simple banking system.
Actual recharge depends on:
geology;
soil;
depth to groundwater;
recharge structure;
rainfall;
infiltration;
local hydrogeology.
Rainwater harvesting and recharge should be designed as engineering systems—not just compliance structures.
Check Wastewater-Reuse Potential Before Finalising the Site
Wastewater treatment can materially reduce freshwater demand.
A preliminary project review should estimate:
Domestic Sewage
How much STP water can be reused for:
flushing;
horticulture;
cooling;
washing?
Process Effluent
Can treated ETP water be reused for:
cooling;
washing;
process;
utilities?
High-TDS Streams
Will they require:
RO;
evaporation;
ZLD;
disposal?
This is important because two sites with the same groundwater availability may have completely different water economics depending on wastewater-disposal conditions.
For process-effluent planning:
Check Whether ZLD Could Become a Hidden CAPEX Requirement
Some projects select a site expecting simple treatment and discharge.
Later they discover that:
regulatory conditions;
receiving-environment constraints;
water scarcity;
reuse requirements;
make high recovery or ZLD necessary.
This can substantially change:
CAPEX;
energy use;
chemical consumption;
sludge/salt disposal.
Where relevant:
should be evaluated before project economics are frozen.
Water Security Should Influence Land Valuation
Industrial land should not be valued only by:
₹/acre.
A more realistic comparison includes:
land price
water infrastructure CAPEX
water operating cost
regulatory risk
future expansion risk.
Consider:
Site A
Land cost: lowerGroundwater: uncertainExternal water: 8 km away
Site B
Land cost: 10% higherIndustrial water: availableReuse infrastructure feasible
Site B may have the lower life-cycle project cost.
Prepare a Groundwater and Water-Risk Matrix
Before buying land, classify the site.
Low Risk
favourable regulatory position;
secure authorised water;
acceptable groundwater quality;
strong reuse potential.
Moderate Risk
partial groundwater dependence;
some external supply;
manageable treatment requirement.
High Risk
groundwater-stressed assessment unit;
no confirmed external supply;
high water demand;
poor water quality.
Critical
project assumes groundwater that may not be permissible;
no alternative supply;
major expansion planned.
This forces water risk into the investment decision.
What Documents Should Be Collected Before Land Purchase?
A good due-diligence docket may include:
exact site coordinates;
land-use documents;
industrial-estate information;
current groundwater classification;
applicable groundwater regulations;
nearby groundwater NOCs where legitimately accessible;
water-supply correspondence;
groundwater-quality reports;
borewell logs;
historical groundwater-level information;
proposed production capacity;
preliminary process flow;
water balance;
ETP/STP concept;
future expansion plan.
The aim is not to create the full DPR.
It is to identify fatal or expensive water risks before commitment.
Should a Hydrogeological Study Be Done Before Land Purchase?
Not for every project.
But it can be very valuable where:
groundwater is the primary proposed source;
water demand is high;
the site is groundwater stressed;
existing borewell evidence is uncertain;
the project requires long-term abstraction;
expansion is planned.
The appropriate study may range from:
Desk-Based Screening
Groundwater classification, aquifer information, historical levels and regulatory review.
Field-Validated Assessment
Site visit, hydrocensus, groundwater-level observations, borewell verification and mapping.
Detailed Hydrogeological Study
Aquifer testing, pumping tests, groundwater-impact assessment and modelling where required.
The study depth should match the investment risk.
A Borewell Is Not a Water Strategy
This is perhaps the central point of the article.
The question during land selection should not be:
“Can we drill a borewell here?”
It should be:
“Can this site support the complete industrial water architecture for the project over its expected operating life?”
That architecture may combine:
groundwater
industrial water
treated wastewater reuse
condensate
rainwater
process recycling.
The strongest industrial projects are not necessarily those with the largest borewell.
They are those with the lowest avoidable freshwater dependency.
Suggested Industrial Land Groundwater Due-Diligence Sequence
Use this sequence before the transaction:
Step 1 — Identify the Exact Site
Coordinates and assessment unit.
Step 2 — Check Groundwater Classification
Use the latest official data.
Step 3 — Identify the Regulator
CGWA or State authority.
Step 4 — Estimate Water Demand
Process + utility + domestic.
Step 5 — Reduce the Demand on Paper
Incorporate reuse and recovery.
Step 6 — Verify Groundwater Feasibility
Regulation + quantity + quality.
Step 7 — Verify Alternative Supply
Industrial/municipal/reclaimed sources.
Step 8 — Check Future Expansion
Evaluate ultimate production.
Step 9 — Estimate Water CAPEX
Pipelines, storage, treatment and reuse.
Step 10 — Include Water Risk in the Land Decision
Do not sign first and investigate later.
How SARK Engineers & Consultants Supports Industrial Land Due Diligence
SARK approaches industrial land selection from a combined:
groundwater
water engineering
environmental compliance
project feasibility
perspective.
Support can include:
Groundwater Regulatory Screening
Identify current assessment-unit status and competent authority.
Water-Demand Assessment
Develop preliminary process and utility water requirements.
Groundwater Due Diligence
Review abstraction feasibility, borewell conditions and hydrogeological risk.
Field-Validated Assessment
Hydrocensus, borewell verification, groundwater-level observation and site mapping.
Groundwater Impact Assessment
Where project scale and applicable regulation require deeper analysis.
Alternative Water Assessment
Evaluate industrial, municipal, reclaimed-water and other authorised sources.
Water-Reuse Strategy
ETP/STP reuse, condensate recovery and process recycling.
Project Assessment
Integrate water risk with wider industrial project CAPEX and feasibility.
For broader greenfield project review:
and:
Frequently Asked Questions
Should groundwater be checked before buying industrial land?
Yes, particularly where the proposed factory is water dependent. Groundwater classification, regulatory eligibility, quantity, quality and alternative water supply can materially affect project feasibility.
Does a neighbouring factory's borewell prove that a new factory can use groundwater?
No. Existing neighbouring borewells may operate under different permissions, project categories or historic regulatory conditions.
Is a high borewell yield enough to select industrial land?
No. Borewell yield only indicates current physical well performance. Regulatory permission, groundwater sustainability and water quality must also be evaluated.
What is the most important groundwater check before land purchase?
The first step is to identify the exact site assessment unit, current groundwater category and competent regulatory authority.
Should future factory expansion be included in groundwater due diligence?
Yes. A site that supports initial production may still become unsuitable if future expansion substantially increases freshwater demand.
Can wastewater reuse reduce groundwater dependence?
Yes. Treated ETP/STP water, condensate recovery, cooling optimisation and process recycling can materially reduce external freshwater requirement.
Is a hydrogeological study required before every industrial land purchase?
No. The appropriate study depth depends on water demand, groundwater dependence, project scale, hydrogeological conditions and regulatory risk.
Can an Over-Exploited area still be used for an industrial project?
Potentially yes, but groundwater cannot be assumed as the primary source. The regulatory position and alternative water architecture must be evaluated project by project.
Regulatory Note
Information reviewed: August 2026
Groundwater regulation varies between States and competent authorities. CGWB currently states that CGWA regulates groundwater in 20 States/UTs while other States regulate through State mechanisms. The exact regulatory position should therefore be verified for the project site before industrial land acquisition or groundwater-dependent project design.
Comments