WASA Water Bill Calculator Pakistan 2026 – Lahore, Karachi, Islamabad & Punjab

Water Bill Calculator – Instant Estimate

Sewerage surcharge: 15% of water charges. GST: 16% on total (water + fixed + sewerage). Fixed charges vary by city.

📊 Official Water Tariffs (2026) – City‑wise

Below are the latest notified water rates for major Pakistani cities. Commercial rates are typically double the domestic rate.

Official sources: Lahore WASA tariff notification 2026, KWSB schedule of charges, CWD Islamabad.

📌 Real Water Bill Examples (Including Sewerage & GST)

• Lahore Domestic – 25 m³: Energy = 25×35 = Rs 875; Fixed = Rs 150; Subtotal = 1025; Sewerage (15%) = 154; GST (16%) = 189; Total = Rs 1,368
• Karachi Commercial – 50 m³: Energy = 50×80 = Rs 4,000; Fixed = Rs 200; Subtotal = 4,200; Sewerage (20%) = 840; GST (16%) = 806; Total = Rs 5,846
• Islamabad Domestic – 30 m³: Energy = 30×38 = Rs 1,140; Fixed = 180; Subtotal = 1,320; Sewerage (15%) = 198; GST (16%) = 243; Total = Rs 1,761
• Other Punjab – 40 m³: Energy = 40×30 = Rs 1,200; Fixed = 100; Subtotal = 1,300; Sewerage (15%) = 195; GST (16%) = 239; Total = Rs 1,734

💡 Smart Ways to Reduce Your Water Bill (Zero‑Cost & Low‑Cost)

• Fix leaking taps: A dripping tap wastes 15‑20 gallons/day → up to 600 gallons/month (~2.3 m³) costing Rs 70‑90 extra monthly.
• Install a water meter (if not already): You pay only for what you use – unmetered connections often overcharge.
• Take shorter showers: Reducing shower time by 2 minutes saves ~15 gallons per day → ~450 gallons/month (~1.7 m³).
• Use rainwater harvesting: Collect rain for gardening, car washing, and flushing – can reduce purchased water by 20‑30% in rainy months.
• Reuse RO waste water: Reverse osmosis purifiers waste 3‑4 litres per litre of clean water. Use that waste water for mopping, cleaning, or gardening.
• Check for hidden leaks: Turn off all taps, note the meter reading, wait 2 hours – if meter moves, you have a leak.

🧾 Understanding Sewerage Surcharge – Why It’s Added

Sewerage surcharge (typically 15‑20% of water charges) funds the treatment and disposal of wastewater. In Lahore, it’s 15%; in Karachi, 20%; in Islamabad, 15%. This charge is non‑negotiable but can be reduced by consuming less water. Our calculator automatically applies the correct percentage based on city.

🖥️ How to Check Your WASA Bill Online – Lahore, Karachi, Islamabad

• Lahore (WASA): Visit wasabill.lgpunjab.gov.pk → Enter your 11‑digit customer ID.
• Karachi (KWSB): Combined with K‑Electric bill or visit kwsb.gos.pk → Enter reference number.
• Islamabad (CWD): Visit cda.gov.pk/wasa → Enter connection number.
• Other Punjab cities: Use the same Lahore WASA portal or contact local WASA office.

You can also pay WASA bills via JazzCash, Easypaisa, or bank apps using your customer ID.

🏢 Commercial vs Domestic – What’s the Difference?

Commercial water tariffs are exactly twice the domestic rate in most cities. Additionally, fixed charges are higher (e.g., Lahore commercial fixed Rs 300 instead of Rs 150). A small shop using 10 m³ will pay roughly 2.2x more than a household using the same amount. Use our calculator above to compare.

📞 WASA Complaint Numbers & Resolution Tips

• Lahore WASA helpline: 042‑111‑119‑119
• Karachi KWSB: 021‑9924‑5000
• Islamabad CWD: 051‑925‑2462
• For overbilling: Request a meter test. If error >5%, bill is adjusted.
• For low pressure / no water: Ask for a connection inspection – sometimes valves are partially closed.

❓ Frequently Asked Questions – Water Bills in Pakistan