QUICK ANSWER
Record borewell water as a separate incoming source in the society's water budget. The strongest quantity record is a suitable, verified meter at a defined delivery point. If a meter is unavailable, use a transparently labeled estimate supported by operating records, not an assumed fixed number of litres per hour.
A borewell's pump runtime does not, by itself, prove the quantity extracted. Actual delivery can vary with groundwater conditions, equipment performance and the plumbing arrangement.
For water budgeting, separate three questions: Is extraction and use authorized under the rules applicable to this site? How much water was actually received? How reliably can the source contribute to future supply?
WHY A BOREWELL NEEDS ITS OWN LEDGER
A society may receive water from several external sources into the same underground tank. Groundwater can arrive from an on-site borewell where applicable, or indirectly through tanker suppliers that draw from their own borewells. The tank level reveals the combined net change after other inflows and withdrawals, while source-specific accounting requires separate evidence for each contribution.
If a society treats a borewell as a guaranteed daily quantity without measuring it, its water runway and tanker planning may be overly optimistic.
Separate source accounting also makes it easier to see whether a change in total storage reflects reduced groundwater delivery, a municipal interruption, a transfer problem or higher withdrawal.
FIRST: CHECK THE SITE'S PERMISSIONS AND WATER SERVICE
Before changing extraction, adding equipment or publishing claims about lawful use, identify the applicable authority, existing permissions and any current restrictions for the particular property and source.
Requirements can differ by location, groundwater category, use, project type and current directions. Do not assume that a rule for one Pune or PCMC property applies to another, or that a statewide drought announcement is itself the exact instruction for a particular borewell.
The facility team should retain the relevant approvals and verify current obligations with the competent authority or qualified adviser. This guide is an accounting method, not a legal determination or permission to drill, extract or change groundwater use.
Identify the receiving tank and the water service. Do not assume untreated borewell water is suitable for drinking or any other specific use; water quality and treatment are separate questions requiring appropriate assessment.
STEP 1 — MAP THE BOREWELL SUPPLY PATH
Document the borewell identifier, pump and delivery line, any meter, receiving tank or branch, and whether another source can enter the same line or tank.
Record whether the meter is upstream or downstream of any diversion, recirculation or treatment-related flow. A meter reading represents volume passing its actual measurement point, not automatically all water extracted or all water delivered to residents.
If multiple borewells share a manifold, establish whether the measurement is per source or combined. Never allocate a combined reading to individual borewells without independent evidence.
Use an approved site diagram and authorized personnel for physical inspection. Do not modify electrical or pressurized equipment as an informal measurement experiment.
STEP 2 — MEASURE RECEIVED VOLUME WHERE POSSIBLE
For a cumulative volume meter, the basic calculation is:
Volume over the period = closing meter reading − opening meter reading.
Suppose a verified meter records 3,420 kL at the beginning of the day and 3,444 kL at the end. The recorded passage through that meter is 24 kL, provided the meter, units and reading sequence are valid.
This is an illustrative example, not a TownEve installation result.
Record the meter ID, location, units, timestamp, verification status, operator and any reset or rollover. One cubic metre is one kilolitre, equal to 1,000 litres.
Meter selection and installation must suit the pipe, operating conditions and local requirements. Have qualified personnel assess them rather than applying a universal specification from an article.
STEP 3 — TREAT RUNTIME AS AN OPERATING RECORD, NOT A VOLUME METER
A pump may run for two hours without delivering the same quantity on every occasion. Actual flow may change with source conditions, pump performance, head, restrictions and system operation.
Runtime × an assumed flow rate is therefore an estimate, not independently measured extraction.
If the site has a properly established and periodically checked flow-rate relationship, it may use a documented estimate for planning. Label the estimate, record the test conditions and revalidate it when the system changes.
Do not silently turn motor-on time, electricity consumption or a tank-level change into a verified groundwater volume.
STEP 4 — RECONCILE THE RECEIVING TANK
For a single receiving tank over a consistent period:
Closing stored volume = opening stored volume + borewell inflow + other inflows − withdrawals and transfers ± documented adjustments.
Example: a domestic underground tank opens with 70 kL. A verified borewell meter records 20 kL delivered to the tank, and 15 kL is transferred to overhead storage. If no other flows occur, expected closing storage is 75 kL.
The observed net tank increase is only 5 kL, even though 20 kL entered from the borewell. Reporting the 5 kL change as the borewell's output would understate the measured delivery.
If municipal water also enters the tank, its volume belongs in a separate source column. A tank graph alone cannot distinguish simultaneous source contributions.
For a property-wide boundary including underground and overhead tanks, the transfer between those tanks is internal, not additional external water.
STEP 5 — KEEP EXTRACTION, RECEIPT AND CONSUMPTION DISTINCT
These quantities may differ depending on the physical boundary:
Extraction: water taken from the groundwater source, as measured or estimated at an appropriate point.
Received supply: water delivered into the society's defined storage or supply boundary.
Consumption or external outflow: water leaving that defined boundary for its intended uses or other destinations.
Storage change: the net difference between opening and closing inventory.
Do not equate these numbers unless the system configuration and measurement evidence support doing so.
If a borewell feeds a tank that is simultaneously filling from municipal supply and draining through a pump, the tank's net level change cannot independently identify borewell inflow, municipal inflow and withdrawal.
STEP 6 — BUILD A BOREWELL EVENT LEDGER
Use one line per verified event or accounting interval:
Date | Borewell ID | Water service | Meter ID and boundary | Start reading | End reading | Volume (kL) | Pump runtime, if independently recorded | Measurement status | Receiving tank | Operator | Notes.
For daily reporting, retain the source-event evidence and aggregate compatible records into one borewell-supply total.
Measurement status should distinguish measured, estimated, planned and unknown. An unknown value is not zero. A pump that was scheduled to run is not proof that it ran or delivered water.
If multiple sources are used, the daily society water-balance template should preserve distinct municipal, borewell and tanker columns.
STEP 7 — ASSESS RELIABILITY WITHOUT MAKING GROUNDWATER PREDICTIONS
A useful planning record includes days when supply was unavailable, measured volumes when available, maintenance events and any verified change in operating conditions.
Use observed historical performance as context, not a guarantee of future extraction. Groundwater availability can change, and an individual property's well performance cannot be inferred solely from regional rainfall or a news headline.
For scenario planning, show a no-borewell case alongside a documented baseline rather than assuming the borewell will always contribute its usual quantity.
If a future supply assumption is uncertain, mark it uncertain. Do not inflate a water-runway estimate by treating it as confirmed replenishment.
STEP 8 — CONNECT BOREWELL SUPPLY TO TANK STORAGE
Tank inventory should include verified dimensions, geometry, normal withdrawal arrangements, dead-water height and the current measurement timestamp.
TownEve directly senses water depth and derives tank-specific level and volume from configured geometry. Tank-specific 0% and 100% reference levels define the usable range, allowing unusable or dead-water portions to be excluded from usable-water calculations.
This supports accurate tank-specific calculations across different sizes and shapes when the entered geometry and measured level are correct.
Those readings help establish the storage side of the budget. They do not directly identify how much water the borewell produced when other flows occur simultaneously.
STEP 9 — USE THE RECORD FOR TANKER AND RUNWAY PLANNING
For a planning period:
Supplemental volume = projected demand + chosen closing reserve − opening usable storage − expected non-tanker supply.
Borewell supply should appear in expected non-tanker supply only with its measurement status and uncertainty visible. Use a lower-supply or no-supply scenario where that risk matters.
A booked tanker is likewise planned supply until delivery and quantity are verified.
For conditional runway, divide usable stored water by a stated withdrawal rate for a no-replenishment case, then model actual expected replenishment times separately. A simple average daily borewell figure can conceal a gap before the next supply window.
Do not add water held in a hydraulically isolated tank to the inventory serving another system without a valid transfer arrangement.
STEP 10 — REPORT CLEARLY TO THE COMMITTEE
A concise weekly report can show:
Borewell ID and service | Measured received volume | Estimated volume | Unknown periods | Operating events | Opening and closing usable storage | Other source inputs | Data-quality issues | Next verification | Responsible person.
Compare periods with the same measurement boundary. A decline in recorded borewell supply is an operational signal to verify, not by itself proof of a regional aquifer trend.
If restrictions or permits change, record the applicable authority notice and its effective scope before updating the operating plan.
WHERE TOWNEVE FITS
TownEve currently offers contactless ultrasonic monitoring for suitable overhead and underground tanks, current and historical level visibility, configured email alerts, telemetry-freshness monitoring and geometry-aware usable-volume calculations using configured tank dimensions and dead-water height.
These capabilities strengthen storage visibility and can prompt investigation of an unusual trend. Borewell extraction, groundwater level, water quality and pump electrical state are separate measurement questions that use the corresponding instrumentation or operating records.
Direct pump-state monitoring is in development; remote pump operation is in development and testing. Flow-meter integration is app-capable, although flow-meter hardware has not yet been deployed. These are development layers extending the current tank-monitoring platform.
The practical progression is to pair verified storage observations with independent source measurements and a consistent accounting boundary.
FAQ
Can I calculate borewell output from pump runtime?
Only as a qualified estimate if a relevant flow-rate relationship has been verified. Runtime alone is not a volume measurement.
Can an underground tank graph tell me how much groundwater entered?
Not reliably when municipal supply, tanker input or withdrawals occur simultaneously. The graph shows net storage change.
Should borewell water be combined with municipal water in a budget?
It can be included as a separate external supply column for the same legitimate water-service boundary. Keep its source and measurement status distinct.
What if the borewell has no meter?
Record the limitation, use transparently documented estimates only where justified, and assess independent measurement if source volume matters to decisions.
Does a borewell's historical output guarantee drought-period supply?
No. Use scenarios and verify current performance; do not promise future groundwater availability.
Can borewell water be used for drinking?
This guide does not determine water suitability. Appropriate treatment, testing and applicable requirements must be evaluated separately.
Are all Maharashtra housing societies subject to the same borewell restrictions?
Do not assume so. Verify the applicable location, source, use and current competent-authority directions.
Can TownEve directly measure borewell extraction today?
No released direct extraction or flow-meter measurement capability is claimed here. Its current verified role is tank-level and usable-storage visibility.