Editable assumptions

Données du compteur et du tarif

Choose a preset or switch to custom tariff and enter the charges from your bill.

Pays or city preset

Devise

Mode d’utilisation

Personnes, employés ou usagers desservis Used only for high-use warnings.

Début de la période de facturation

Fin de la période de facturation

Ancien relevé du compteur (m3)

Nouveau relevé du compteur (m3)

Fixed charge

Frais d’assainissement ou de service

VAT or tax rate (%)

Facture reçue amount (optional)

Suspicion de fuite
Activez si un robinet coule la nuit, si le compteur avance tout fermé, si une chasse fuit ou si la consommation a brusquement augmenté.

Test nocturne mesuré (facultatif)

Close taps and water-using equipment, record the meter, wait, then record it again. Enter readings in m3; three decimals represent one litre.

Relevé au début du test (m³)

Relevé à la fin du test (m³)

Durée du test (minutes) The projection assumes any measured movement continued for 24 hours/day; use it as a diagnostic ceiling, not a confirmed leak bill.

Tariff blocks

Tarifs personnalisés

Blocks use cubic metres. Block 3 applies to all usage above the block 2 upper limit.

Block 1 upper limit (m3)

Block 1 rate per m3

Block 2 upper limit (m3)

Block 2 rate per m3

Block 3 rate per m3

All calculations run locally in your browser. Confirm final tariffs with your water utility or city authority.

Résultat de la facture d’eau

Enter meter readings and charges to estimate consumption and expected bill.

Ready to calculate

Consumption - Meter difference in m3

Facture attendue - Water, fixed, sewerage, and tax

Consommation quotidienne - Litres per day

High-use warning - Based on mode and users served

Détail de la facture

Block 1 charge	-
Block 2 charge	-
Block 3 charge	-
Fixed and sewerage	-
VAT or tax	-

Signaux de consommation

Billing period	-
Per-user daily use	-
Facture reçue variance	-
Leak risk	-
Next priority	-

Test nocturne de fuite mesuré

Add both optional test readings to quantify meter movement.

Meter movementNot entered

Measured flowNot entered

30-day loss ceilingNot entered

Variable bill impactNot entered

Contrôles de fuite et prochaines étapes

The checklist updates from the reading, mode, usage level, and leak toggle.

Take a fresh meter photo and compare it with the current bill reading.
Check visible taps, toilet cisterns, storage tanks, and underground lines.
Confirm tariff block, fixed charge, tax, and sewerage/service charge with the utility.

Méthodologie

The calculation method rebuilds a utility-style water bill from meter consumption and tariff blocks.

Consumption = current meter reading - previous meter reading.
Tariff charge = block 1 usage x rate + block 2 usage x rate + remaining usage x block 3 rate.
Subtotal = tariff charge + fixed charge + sewerage or service charge.
Facture attendue = subtotal + VAT or tax. Consommation quotidienne = consumption x 1,000 / billing days.
Night-flow test = meter change x 1,000 / test hours. The 30-day loss ceiling assumes that flow continued all day; bill impact reruns the tariff blocks with the projected extra m3 and adds tax.

Hypothèses et sources

Les valeurs prédéfinies sont des hypothèses de planification modifiables. Ce ne sont pas des tarifs officiels en direct et elles peuvent différer selon le quartier, la catégorie de client, la subvention ou le type de compteur.

Source data: current bill, meter readings, municipal tariff notice, city water utility schedule, and official authority updates.
Freshness note: reviewed 16 May 2026. Update the tariff blocks, fixed charge, tax, and sewerage charge when your provider changes rates.
Official check: confirm final amounts with your water utility, city authority, regulator, or consumer protection office.

Avertissement

Il s’agit uniquement d’une estimation. Elle ne remplace ni une facture officielle, ni le relevé du fournisseur, ni l’inspection d’un plombier agréé, ni une décision municipale ou un conseil juridique.

Tiered tariffs, minimum charges, communal meters, estimated reads, penalties, reconnection fees, and subsidies can change the result.
En cas de fuite importante ou de litige de facturation, consignez les relevés et demandez le calcul détaillé du compte avant de payer les montants contestés.
For suspected contamination or unsafe water, use a water quality checker and contact the responsible authority.