Bihar Water Bill Calculator 2026 (PHED / Patna Municipal)

Bihar Water Bill Calculator – PHED / Patna Nagar Nigam 2026

Bihar’s water billing system is quite different from most other states you may have come across. The state does not yet have a widespread metered water supply system. This means most urban households in Bihar, including those in Patna, pay a flat monthly user charge regardless of how much water they actually consume. Whether you use 5 KL or 25 KL in a month, the bill stays the same.

This is largely because the water supply infrastructure across Bihar is still not metered at the household level. The Har Ghar Nal Ka Jal (Jal Jeevan Mission) scheme has been expanding tap connections rapidly across Bihar, but the metering component is expected to follow over the next few years as infrastructure matures.

Monthly Water Charges in Bihar (2025-26)

The flat monthly charges vary depending on your household category and are set jointly by the Patna Municipal Corporation (PMC) and the Public Health Engineering Department (PHED), Bihar. In some areas, these charges are collected along with your property tax notice rather than as a separate water bill:

• BPL / Jal Jeevan Mission beneficiaries: ₹40 per month
• General domestic household: ₹100 per month
• Semi-commercial or larger household: ₹150 per month

There are no per-KL slabs, no sewerage percentage, and no meter reading involved for these categories. What you see is what you pay, every month.

Commercial Connection Charges

For commercial or non-residential premises, a one-time connection fee applies on top of the monthly recurring charges:

• One-time connection fee: ₹2,400 to ₹12,000 depending on pipe diameter and category
• Small commercial unit: ₹500 per month
• Medium commercial / institutional: ₹1,500 per month

Comparison: Bihar vs. Other States

5 Questions Bihar Water Consumers Ask Most

1. Why does Bihar not have metered water billing?

The infrastructure for metered water supply requires functional water meters at every connection, a reliable piped water network with adequate pressure, and a billing and collection system that can process metered data. Much of Bihar’s urban water supply network is still being upgraded. Patna’s old network has been undergoing renovation for years, and newer areas being built under the Smart City Mission or AMRUT scheme are getting metered connections. The shift to metered billing is expected to happen progressively as these upgrades complete.

2. I have a Jal Jeevan Mission tap connection in my village — how much will I pay?

Under the Jal Jeevan Mission, connections to BPL and rural households are heavily subsidized. In many Bihar villages, the Operation and Maintenance (O&M) cost is collected by the Gram Panchayat or Pani Samiti at the community level, often just ₹30 to ₹50 per month per household. This figure varies by district and Panchayat — your local Mukhiya or Pani Samiti representative is the best source for the exact charge in your village.

3. My water bill is included in my property tax notice — how do I separate them?

In many areas of Patna and other Bihar cities, the Nagar Nigam collects water charges as part of the property tax demand notice. The water component is usually listed as a separate line item in the notice. If you are unsure, ask for a breakdown at the local ward office. You can also call the Patna Municipal Corporation helpline at 155304 for clarification.

4. Can I pay my Bihar water bill online?

Online payment systems for water bills in Bihar are still developing. The Patna Nagar Nigam portal at patnanagarnigam.in allows you to check property tax and water charge dues. Some wards also accept payment through Paytm or at the local ward collection counter. If online payment is not available in your area, the ward office is your primary option.

5. What happens when Bihar moves to metered billing?

Once Bihar transitions to metered billing, households that conserve water — typically those using under 10 to 15 KL per month — could end up paying less than the current ₹100 flat charge. Larger households or those that use more water will likely pay more. The transition will also make it easier to detect water leakages in the distribution network, which is currently a significant problem causing system-wide losses.