BillCalc

Kerala Kerala Water Authority

Kerala Water Bill Calculator (KWA)

Estimate Kerala Water Authority (KWA) water bills online for Domestic, Non-Domestic, Industrial, Public Hydrant & Bulk Supply connections with optional billing customization.

Tariff Updated: September 2026
Verified with official KWA tariff schedule for 2026-27.
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Calculator Inputs

Default Tariff
Select your connection type or billing category.
Select your connection water pipe meter size.
Select whether your property has an active sewerage/drainage connection.
Enter your bi-monthly or monthly consumption.
Default billing period for KWA is 1 month.

Estimated Bill Summary

Kerala Water Bill Calculator (KWA)

Kerala Water Authority (Kerala)

ESTIMATE
Connection Type: -
Consumption: -
Billing Period: -

Calculating...

Net Amount Payable
₹0.00
Charge Item Calculation Formula Amount

Cost Composition Chart

Water: ₹0
Fixed: ₹0
Tax/Fee: ₹0

Latest verified KWA water tariff rates in Kerala. View the water rate per KL, tariff slabs, service charges, and applicable taxes for accurate water bill estimation. You can optionally customize tariff slabs and charges to match your latest utility bill. Your customized tariff is saved on this device for future calculations.
Source: Official KWA Tariff PDF

KWA Domestic Tariff Slabs & Rates

Updated: September 2026

Consumption Slabs & Unit Rates

Consumption Range Unit Rate Billing Type
0 - 5000 KL ₹14.41 Telescopic (Split slabs)
5001 - 10000 KL ₹14.41 Telescopic (Split slabs)
10001 - 15000 KL ₹15.51 Telescopic (Split slabs)
15001 - 20000 KL ₹16.62 Flat Bracket (Highest)
20001 - 25000 KL ₹17.72 Flat Bracket (Highest)
25001 - 30000 KL ₹19.92 Flat Bracket (Highest)
30001 - 40000 KL ₹23.23 Flat Bracket (Highest)
40001 - 50000 KL ₹25.44 Flat Bracket (Highest)
Above 50001 KL ₹54.10 Telescopic (Split slabs)

Fixed Charges & Other Charges

Charge Name Value Charge Type
Minimum Charge (Up to 5000 litres) ₹72.05 (flat) MINIMUM
Fixed Charge (Flats per dwelling unit) ₹55.13 (flat) FIXED
Sewerage Charge 11.02% SURCHARGE

KWA Non Domestic Tariff Slabs & Rates

Updated: September 2026

Consumption Slabs & Unit Rates

Consumption Range Unit Rate Billing Type
0 - 15000 KL ₹26.54 Telescopic (Split slabs)
15001 - 30000 KL ₹33.15 Telescopic (Split slabs)
30001 - 50000 KL ₹40.87 Telescopic (Split slabs)
Above 50001 KL ₹54.10 Telescopic (Split slabs)

Fixed Charges & Other Charges

Charge Name Value Charge Type
Minimum Charge (Up to 15000 litres) ₹265.40 (flat) MINIMUM
Fixed Charge (Above 15000 to 30000 litres) ₹55.13 (flat) FIXED
Sewerage Charge 11.02% SURCHARGE

KWA Industrial Tariff Slabs & Rates

Updated: September 2026

Consumption Slabs & Unit Rates

Consumption Range Unit Rate Billing Type
Above 0 KL ₹54.10 Telescopic (Split slabs)

Fixed Charges & Other Charges

Charge Name Value Charge Type
Fixed Charge ₹165.38 (flat) FIXED
Minimum Charge ₹541.00 (flat) MINIMUM
Sewerage Charge 11.02% SURCHARGE

KWA Public Hydrants Tariff Slabs & Rates

Updated: September 2026

Consumption Slabs & Unit Rates

Consumption Range Unit Rate Billing Type

Fixed Charges & Other Charges

Charge Name Value Charge Type
Corporation/Municipal Taps (per year) ₹21,838.68 (flat) FIXED
Panchayath Taps (per year) ₹14,559.12 (flat) FIXED

KWA Bulk Supply Tariff Slabs & Rates

Updated: September 2026

Consumption Slabs & Unit Rates

Consumption Range Unit Rate Billing Type
Above 0 KL ₹16.62 Telescopic (Split slabs)

Fixed Charges & Other Charges

Charge Name Value Charge Type
Tanker Lorry Supply (per 1000 litres at filling point) ₹76.15 (per Unit) FIXED
Conveyance Charge ₹42.00 (flat) FIXED
Administrative Charge (up to 6000 litres) ₹330.75 (flat) FIXED
Administrative Charge (above 6000 litres) ₹551.25 (flat) FIXED

About Kerala Water Bill Calculator

The Kerala Water Bill Calculator is a free online tool that helps you estimate your monthly Kerala Water Authority (KWA) water bill using the latest available Kerala water tariff. It is designed for consumers with Domestic, Non-Domestic, Industrial, Public Hydrant, and Bulk Supply connections served by KWA.

Simply enter your monthly water consumption in litres, select your connection type, and the calculator instantly generates a detailed tariff-wise bill breakdown including water charges, minimum charges, fixed charges, sewerage charges (where applicable), and other billing components.

Whether you are a homeowner, apartment resident, tenant, business owner, industrial consumer, or public institution, this KWA Water Bill Calculator provides a fast and reliable estimate before your official water bill is generated. It also includes optional Billing Customization, allowing you to modify tariff slabs, rates, fixed charges, and additional billing components to match your billing requirements.

Why Use This Kerala Water Bill Calculator?

  • Calculate water bills for Kerala Water Authority (KWA) consumers.
  • Supports Domestic, Non-Domestic, Industrial, Public Hydrant, and Bulk Supply connections.
  • Automatic tariff-wise water charge calculation.
  • Includes minimum charges and sewerage charges where applicable.
  • Optional Billing Customization for tariff simulation.
  • Free, mobile-friendly, and easy to use.
> Disclaimer: This calculator is an independent water bill estimation tool and is not affiliated with Kerala Water Authority (KWA) or the Government of Kerala. Actual bills may vary due to tariff revisions, sewerage charges, taxes, rebates, arrears, meter reading differences, or other applicable billing components.

About Kerala Water Authority (KWA)

Kerala Water Authority (KWA) is the statutory public utility responsible for providing drinking water supply and sewerage services throughout the state of Kerala. The authority manages water treatment plants, distribution networks, public hydrants, industrial water supply, bulk water services, customer billing, and consumer support for residential, commercial, institutional, and industrial users.

Millions of consumers across Kerala receive their water supply through KWA, with tariffs varying according to the connection category and monthly water consumption. This calculator helps estimate those charges using the latest available Kerala water tariff structure.

Connection Types Supported

This Kerala Water Bill Calculator supports the major consumer categories currently available under the Kerala Water Authority tariff schedule.

Connection TypeSuitable For
DomesticHouses, flats, apartments, and residential consumers
Non-DomesticShops, offices, hotels, schools, hospitals, and commercial establishments
IndustrialFactories, manufacturing units, warehouses, and industrial consumers
Public HydrantsMunicipal corporations, municipalities, and panchayat public water taps
Bulk SupplyGovernment bodies, institutions, and large bulk water consumers

The calculator automatically applies the selected tariff category and generates a detailed monthly KWA water bill estimate.

How the Kerala Water Bill Is Calculated

Your estimated Kerala Water Authority bill is calculated using the selected connection category and applicable tariff slabs.

The bill may include:

  • Water consumption charges
  • Minimum charges
  • Fixed charges
  • Sewerage charges (where applicable)
  • Category-wise tariff calculation
  • Total estimated payable amount
Simply enter your monthly water consumption in litres, choose the appropriate connection type, and the calculator will display a complete breakdown of your estimated Kerala water bill.

Billing Customization

In addition to standard bill estimation, the calculator includes optional Billing Customization for users who want to match their actual bill or simulate different tariff scenarios.

You can customize:

  • Water tariff rates
  • Consumption slab ranges
  • Fixed charges
  • Minimum charges
  • Sewerage charges
  • Additional billing components
This feature is especially useful for homeowners, tenants, housing societies, accountants, commercial establishments, and industrial consumers who require customized water bill calculations.

Pro Tips to Reduce Your Kerala Water Bill

Reducing water consumption can help lower your monthly KWA water bill while conserving water resources.

Monitor Your Monthly Water Usage

Track your monthly consumption regularly to understand how different tariff slabs affect your water bill.

Repair Leaks Immediately

Even small leaks from taps, pipes, or flush tanks can significantly increase monthly water consumption and billing.

Install Water-Efficient Fixtures

Low-flow taps, dual-flush toilets, and water-saving showerheads can reduce household water usage without affecting daily comfort.

Reuse Water Where Possible

Collect rainwater or reuse suitable household water for gardening and cleaning to reduce treated water consumption.

Use the Calculator Before Every Billing Cycle

Estimate your Kerala Water Authority bill each month to compare consumption patterns and identify opportunities to reduce water charges.

KWA Water Bill Components Explained

Learn what each tariff slab, fixed charge, tax, and other billing component means and how it is used to estimate your Water bill.

Billing Component Charge Type What is it? / Description
Water Charges Volumetric Charge Charges based on the quantity of water consumed (measured in Kilolitres - KL), calculated progressively across slabs.
Minimum Charge Minimum Additional regulatory, administrative, or operational surcharge included in the official billing tariff.
Fixed Charge Fixed A fixed monthly fee charged by the utility provider for connection maintenance, grid/pipe service availability, independent of consumption.
Sewerage Charge Surcharge Sanitation fee charged by the municipal body or water board for sewage disposal and wastewater treatment systems.
Corporation/Municipal Taps Fixed Additional regulatory, administrative, or operational surcharge included in the official billing tariff.
Panchayath Taps Fixed Additional regulatory, administrative, or operational surcharge included in the official billing tariff.
Tanker Lorry Supply Fixed Additional regulatory, administrative, or operational surcharge included in the official billing tariff.
Conveyance Charge Fixed Additional regulatory, administrative, or operational surcharge included in the official billing tariff.
Administrative Charge Fixed Additional regulatory, administrative, or operational surcharge included in the official billing tariff.

Explore step-by-step bill calculation examples for KWA Water Bills based on the latest tariff rates, slabs, and charges published by Kerala Water Authority.

Domestic

What is the KWA Water Bill for 10 KL?

The estimated bill is ₹215.11. See charges and slabs format below:

Energy Charges: ₹144.10
Fixed Charges: ₹71.01
1
Volumetric Water Charges
  • Slab (0 - 5000): 10 × ₹14.41 = ₹144.1
2
Surcharges, Fixed Fees & Taxes
  • Fixed Charge (Flats per dwelling unit): ₹55.13
    Flat rate ₹55.13 × 1 mo
  • Sewerage Charge: ₹15.88
    11.02% of Volumetric Water Charges (₹144.1)
Domestic

What is the KWA Water Bill for 18 KL?

The estimated bill is ₹343.09. See charges and slabs format below:

Energy Charges: ₹259.38
Fixed Charges: ₹83.71
1
Volumetric Water Charges
  • Slab (0 - 5000): 18 × ₹14.41 = ₹259.38
2
Surcharges, Fixed Fees & Taxes
  • Fixed Charge (Flats per dwelling unit): ₹55.13
    Flat rate ₹55.13 × 1 mo
  • Sewerage Charge: ₹28.58
    11.02% of Volumetric Water Charges (₹259.38)
Domestic

What is the KWA Water Bill for 20 KL?

The estimated bill is ₹375.09. See charges and slabs format below:

Energy Charges: ₹288.20
Fixed Charges: ₹86.89
1
Volumetric Water Charges
  • Slab (0 - 5000): 20 × ₹14.41 = ₹288.2
2
Surcharges, Fixed Fees & Taxes
  • Fixed Charge (Flats per dwelling unit): ₹55.13
    Flat rate ₹55.13 × 1 mo
  • Sewerage Charge: ₹31.76
    11.02% of Volumetric Water Charges (₹288.2)
Bulk Supply

What is the KWA Water Bill for 25 KL?

The estimated bill is ₹2,692.00. See charges and slabs format below:

Energy Charges: ₹415.50
Fixed Charges: ₹2,276.50
1
Volumetric Water Charges
  • Slab (0+): 25 × ₹16.62 = ₹415.5
2
Surcharges, Fixed Fees & Taxes
  • Tanker Lorry Supply (per 1000 litres at filling point): ₹1,903.75
    ₹76.15/unit × 25 units
  • Conveyance Charge: ₹42.00
    Flat rate ₹42 × 1 mo
  • Administrative Charge (up to 6000 litres): ₹330.75
    Flat rate ₹330.75 × 1 mo
Bulk Supply

What is the KWA Water Bill for 35 KL?

The estimated bill is ₹3,619.70. See charges and slabs format below:

Energy Charges: ₹581.70
Fixed Charges: ₹3,038.00
1
Volumetric Water Charges
  • Slab (0+): 35 × ₹16.62 = ₹581.7
2
Surcharges, Fixed Fees & Taxes
  • Tanker Lorry Supply (per 1000 litres at filling point): ₹2,665.25
    ₹76.15/unit × 35 units
  • Conveyance Charge: ₹42.00
    Flat rate ₹42 × 1 mo
  • Administrative Charge (up to 6000 litres): ₹330.75
    Flat rate ₹330.75 × 1 mo
Bulk Supply

What is the KWA Water Bill for 50 KL?

The estimated bill is ₹5,011.25. See charges and slabs format below:

Energy Charges: ₹831.00
Fixed Charges: ₹4,180.25
1
Volumetric Water Charges
  • Slab (0+): 50 × ₹16.62 = ₹831
2
Surcharges, Fixed Fees & Taxes
  • Tanker Lorry Supply (per 1000 litres at filling point): ₹3,807.50
    ₹76.15/unit × 50 units
  • Conveyance Charge: ₹42.00
    Flat rate ₹42 × 1 mo
  • Administrative Charge (up to 6000 litres): ₹330.75
    Flat rate ₹330.75 × 1 mo

Explore the features that help you estimate your utility bill accurately using customizable tariff slabs, charges, and taxes.

Latest Water Tariffs

Calculates using the latest domestic and commercial water rate schedules from the municipal corporation.

Meter Size Adjustments

Automatically applies varying monthly meter rents or service charges based on your connection pipe diameter (e.g. 15mm, 20mm).

Sewage Charge Calculations

Accurately computes sewage/drainage disposal fees, which are often billed as a percentage of your water consumption charges.

Telescopic Slabs

Correctly routes consumption across progressive tiers (e.g., 0-20 KL, 20-30 KL) to ensure accurate calculation.

Municipal Subsidies

Integrates local water relief policies, including free water allowances (like Delhi's 20 KL free scheme) where applicable.

Itemized Bill Breakdown

Displays distinct billing components: water slab charges, meter rent, sewage surcharge, and local cess charges clearly.

FAQ

Frequently Asked Questions

Common questions about Kerala Water Bill Calculator (KWA)

Verified Tariff
Looking for the official KWA customer care number, complaint helpline, head office, bill payment portal, online booking service, or official website? Find the latest verified utility contact details and regulator information below.
Utility Provider KWA
Full Form Kerala Water Authority
State / Jurisdiction Kerala
Head Office Address Jalabhavan, Vellayambalam, Thiruvananthapuram, Kerala - 695033
Customer Care / Complaint Number 1916
Alternate Toll-Free Number 1800 425 5313
Support Email cckwa@kwa.kerala.gov.in
New Connection / Online Booking Apply for New Connection
Official Website Visit Official KWA Website

Disclaimer: BillCalc estimates are based on official tariff information and other publicly available utility billing data available at the time of publication. Although we make every effort to keep this information accurate and up to date, tariffs, taxes, surcharges, or billing policies may change without notice. Not all official connection types or tariff categories may be available by default. Where supported, you can use Billing Customization to modify existing tariffs or create a custom connection by adding your own billing slabs, fixed charges, taxes, rebates, fuel adjustment charges, and other applicable billing components to better match your actual utility bill. All calculations are estimates for informational purposes only, and your utility provider's official bill remains the final and authoritative statement of charges.

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