1. What is Water Bill Calculation?

Water bill calculation in Sri Lanka is based on a tiered rate system where the total bill is calculated by multiplying water usage by the applicable tier rate and adding a fixed charge. This system ensures fair pricing based on consumption levels.

2. How Does the Calculator Work?

The calculator uses the water bill formula:

Where:

• \( Usage \) — Water consumption in units (cubic meters)
• \( Tier\ rate \) — Applicable rate per unit based on consumption tier
• \( Fixed\ charge \) — Base charge regardless of consumption

Explanation: The calculation accounts for both variable consumption costs and fixed service charges as per Sri Lankan water billing practices.

3. Importance of Water Bill Calculation

Details: Accurate water bill calculation helps consumers understand their consumption patterns, budget effectively, and identify potential water leaks or wastage. It also promotes water conservation awareness.

4. Using the Calculator

Tips: Enter water usage in units, the applicable tier rate in Rs per unit, and the fixed charge in Rs. All values must be non-negative numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is a water unit in Sri Lanka?
A: One unit typically equals one cubic meter (1000 liters) of water consumption.

Q2: How are tier rates determined?
A: Tier rates are set by the National Water Supply and Drainage Board and increase with higher consumption levels to encourage water conservation.

Q3: What includes in the fixed charge?
A: The fixed charge covers basic service maintenance, meter reading, and administrative costs regardless of water usage.

Q4: How often are water bills calculated?
A: Water bills are typically calculated monthly based on meter readings taken by utility officials.

Q5: Are there different rates for different consumer categories?
A: Yes, residential, commercial, and industrial consumers may have different tier rates and fixed charges.