Calculating Water Consumption Charge

Oct 13, 2025 by pynkocean.com 31 views

A Household in Lahan: Calculating Water and Sewerage Bills

Understanding the Problem

In this scenario, we are given a household in Lahan that consumed 32 units of water in a month using a half-inch pipe. The National Water Supply Corporation (NWSC) has implemented rules for calculating water and sewerage bills. We need to calculate the payment of the bill, including a 50% sewerage service charge, if the payment is made within the first 15 days of the month.

Water Consumption Charges

The NWSC charges a fixed rate for water consumption based on the size of the pipe used. For a half-inch pipe, the rate is as follows:

Water Consumption (units)	Charge (NRs)
0-10 units	10 NRs/unit
11-20 units	12 NRs/unit
21-30 units	15 NRs/unit
31-40 units	18 NRs/unit
41-50 units	20 NRs/unit
Above 50 units	25 NRs/unit

Calculating Water Consumption Charge

Since the household consumed 32 units of water in a month, we need to calculate the water consumption charge based on the above rate. We can see that the household falls in the 21-30 units category, so the charge is 15 NRs/unit.

Water Consumption Charge = 32 units x 15 NRs/unit = 480 NRs

Sewerage Service Charge

The NWSC also charges a 50% sewerage service charge on the water consumption charge. This charge is calculated as follows:

Sewerage Service Charge = 50% of Water Consumption Charge = 0.5 x 480 NRs = 240 NRs

Total Bill

The total bill is the sum of the water consumption charge and the sewerage service charge.

Total Bill = Water Consumption Charge + Sewerage Service Charge = 480 NRs + 240 NRs = 720 NRs

Payment within the First 15 Days

If the payment is made within the first 15 days of the month, the household will not be charged any late payment fees. Therefore, the total bill remains the same.

Conclusion

Calculating the Bill for Different Scenarios

Let's consider a few different scenarios to see how the bill changes:

Scenario 1: The household consumes 20 units of water in a month. The water consumption charge would be 12 NRs/unit, and the sewerage service charge would be 50% of this amount. The total bill would be 240 NRs.
Scenario 2: The household consumes 50 units of water in a month. The water consumption charge would be 25 NRs/unit, and the sewerage service charge would be 50% of this amount. The total bill would be 1,250 NRs.
Scenario 3: The household consumes 10 units of water in a month. The water consumption charge would be 10 NRs/unit, and the sewerage service charge would be 50% of this amount. The total bill would be 150 NRs.

Understanding the Impact of Water Consumption on the Bill

As we can see from the above scenarios, the water consumption charge has a significant impact on the total bill. The household that consumes 50 units of water in a month will have to pay a total bill of 1,250 NRs, which is more than 5 times the bill of the household that consumes 20 units of water in a month.

Reducing Water Consumption to Save Money

To reduce the water consumption charge and save money, households can take a few steps:

Fix Leaks: Fixing leaks in the pipes can help reduce water consumption and save money on the bill.
Use Water-Efficient Appliances: Using water-efficient appliances can help reduce water consumption and save money on the bill.
Take Shorter Showers: Taking shorter showers can help reduce water consumption and save money on the bill.
Install Low-Flow Fixtures: Installing low-flow fixtures can help reduce water consumption and save money on the bill.

Conclusion

In conclusion, the household in Lahan will have to pay a total bill of 720 NRs for the water and sewerage services consumed in a month. This includes a 50% sewerage service charge on the water consumption charge. To reduce the water consumption charge and save money, households can take a few steps, such as fixing leaks, using water-efficient appliances, taking shorter showers, and installing low-flow fixtures.
A Household in Lahan: Calculating Water and Sewerage Bills - Q&A

Frequently Asked Questions

In this article, we will answer some frequently asked questions related to calculating water and sewerage bills in Lahan.

Q: What is the water consumption charge for a household that consumes 15 units of water in a month?

A: The water consumption charge for a household that consumes 15 units of water in a month would be 10 NRs/unit, as per the NWSC rate. Therefore, the water consumption charge would be 15 units x 10 NRs/unit = 150 NRs.

Q: What is the sewerage service charge for a household that consumes 30 units of water in a month?

A: The sewerage service charge for a household that consumes 30 units of water in a month would be 50% of the water consumption charge. Since the water consumption charge is 15 NRs/unit, the sewerage service charge would be 0.5 x 450 NRs = 225 NRs.

Q: What is the total bill for a household that consumes 25 units of water in a month?

A: The total bill for a household that consumes 25 units of water in a month would be the sum of the water consumption charge and the sewerage service charge. Since the water consumption charge is 12 NRs/unit, the total bill would be 25 units x 12 NRs/unit = 300 NRs + 150 NRs (sewerage service charge) = 450 NRs.

Q: How can I reduce my water consumption charge?

A: There are several ways to reduce your water consumption charge:

Fix leaks in the pipes to prevent water from being wasted.
Use water-efficient appliances to reduce water consumption.
Take shorter showers to reduce water consumption.
Install low-flow fixtures to reduce water consumption.

Q: What is the late payment fee for a household that fails to pay its water and sewerage bill on time?

A: The late payment fee for a household that fails to pay its water and sewerage bill on time is 10% of the total bill. For example, if the total bill is 720 NRs, the late payment fee would be 10% of 720 NRs = 72 NRs.

Q: Can I pay my water and sewerage bill online?

A: Yes, you can pay your water and sewerage bill online through the NWSC website or mobile app. You can also pay your bill at any of the NWSC payment centers.

Q: What happens if I fail to pay my water and sewerage bill?

A: If you fail to pay your water and sewerage bill, your water supply may be disconnected. You will also be charged a late payment fee and may be subject to other penalties.

Q: Can I appeal a decision made by the NWSC regarding my water and sewerage bill?

A: Yes, you can appeal a decision made by the NWSC regarding your water and sewerage bill. You can submit an appeal in writing to the NWSC customer service department, along with any supporting documentation.

Conclusion

In conclusion, we hope this Q&A article has provided you with the information you need to understand how to calculate your water and sewerage bill in Lahan. If you have any further questions or concerns, please do not hesitate to contact the NWSC customer service department.