Apartments treat sewage, residents still pay BWSSB sanitary charge. Why?

Currently sanitary charge is being levied even if you let treated sewage to drainage network, and even if the yield of your borewell is low. No charge is levied on you if you use only tanker water. What’s going on?

L&T South City is an apartment complex in JP Nagar. Comprising 2,000 flats, the complex has four borewells, from which it draws 2 lakh litre water per day. Along with this, the complex also buys water from Bangalore Water Supply and Sewerage Board (BWSSB) and water tankers.

The complex has a functional sewage treatment plant as per KSPCB guidelines, and uses treated water for flushing and gardening. Apartment residents say that any water left into the BWSSB sewage line is treated water. Still, the complex ends up paying sanitary charge of Rs 2 lakh per month. The residents don’t see a reason for this, yet they are forced to pay Rs 100 per month as sanitary charge. Along with this, they also pay extra 25% of their BWSSB bill as sanitary charge for using Cauvery water.

BWSSB collects sanitary charge from residential and commercial structures that depend on BWSSB and borewell water. Sanitary charge applicable to every household in a domestic highrise, for consuming BWSSB water is minimum of Rs 100, or 25 per cent of the water bill, whichever is higher. The households using borewell water will have to pay a fixed sanitary charge of Rs 100 (the earlier charge of Rs 50 has been revised to Rs 100 recently).

Most of the apartments that got plan sanction after 2010 have sewage treatment plants. Pic: Satarupa Sen Bhattacharya

When it comes to borewell water, sanitary charge is not based on the amount of water consumed by the household, because there is no system in place to quantify the water used by every flat. In fact, if an independent house or flat owner uses BWSSB as well as borewell water, he ends up paying sanitary charge for both the connections.

Flawed implementation of sanitary charge collection

The idea behind levying sanitary charge is to account for the cost incurred by the BWSSB for collecting, treating and recycling the used water. Again, as per the Board’s guidelines, this is applicable only to those houses and apartments which let the waste water flow through BWSSB’s sewerage lines.

“The logic behind this is that the water pumped from the well is then used and let out into the sewage pipes,” explains Vishwanath, founder of the Rainwater Club, director of Biome Solutions and an active figure in the water conservation field.

Lokesha A, Financial Advisor and Chief Accounts Officer with the BWSSB, says that the charge is levied for sanitation purposes for apartment complexes that have private bore wells. “This is levied only on those apartments and households that are using a BWSSB sanitary connection and do not have private sewage water treatment system. The water outflow from these households has to be treated before it is released, as per the directions of the Karnataka State Pollution Control Board,” he explains, adding, “supplying water is only one part of the BWSSB’s responsibilities. Taking back waste water is another important function.”

BWSSB Chief Engineer Venkataraju too claims that the BWSSB collects sanitary charge only from those apartments that don’t have private sewerage treatment plants. However, there are instances of the BWSSB imposing the charge even on the apartments with independent sewerage treatment plants.

Forced to pay sanitary charge when there’s no drainage usage

Rajagopalan, L&T South City Complex Sanitary Maintenance Committee, complains that the residents are forced to pay the sanitary charge despite not letting the untreated sewage directly into BWSSB’s Underground Drainage network.

“When we are treating the waste water inside the complex, and not letting the waste as well as treated water to the BWSSB sewerage lines, why is the board collecting amount from us?” he questions, adding, “It is nothing but discrimination meted against (apartments) by the authorities.”

BWSSB’s monthly sanitary charge for each flat in domestic highrise buildings




Tanker water

Sanitation charge

Rs 100 per household or 25 per cent of the water bill, subject to a minimum of Rs 100 per flat

Rs 100 per household


STP v/s BWSSB Sanitary charge confusion

As per the KSPCB rules, bulk consumers having more than 50 flats are supposed to have their own sewage treatment plant and use the water within the apartment premises—not let anything into Raja kaluve or stormwater networks. The treated water is generally used for gardening and flushing, while the solid manure is treated as a fertiliser.

However, not all the apartments in the city have sewage treatment plants. Old apartments in the city do not have space for sewage treatment plants as it was not compulsory to have them when they were built. Sewage treatment plants became mandatory for all the apartments with more than 20,000 sq ft built-up area, in 2010.

While BWSSB is right in collecting sanitary charge from such old apartments that do not have sewage treatment plants, newly built apartments that have sewage treatment plants and plumbing facilities to use the treated water are being charged extra by BWSSB unnecessarily, in the name of sanitary charge.

No sanitary charge for tanker water

What is perplexing in this entire system of sanitary charge collection is, the BWSSB does not impose sanitary charge on consumption of tanker water, for domestic buildings. When asked the reason for the exemption, Venkataraju, BWSSB Chief Engineer said that it was because there is no system to keep a tab on the households purchasing tanker water. “There is no accountability for tanker water usage, hence sanitary charge has not been imposed,” he said.

Vishwanath says that there are examples of a few apartment complexes closing down their borewells to avoid payment of extra sanitary charge to BWSSB. Specially if the yield of the borewell is low, the apartment residents find it unnecessary to pay this charge as they may not use borewell water.

In some cases, though the apartments do not use the borewell water as the water is hard compared to that of Cauvery water and tanker water, they do pay the sanitary charge on borewell to BWSSB to keep the borewell functional in case of acute shortage of water. After all, tankers too are not completely reliable, considering the inordinate supply of water at times.

The confusion created by the criteria and confusion in the collection of sanitation charges has left the citizens waiting for BWSSB to rationalise the sanitary charge collection.

Related Articles

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Rainfed Agara lake to get sewage treatment plant, residents unhappy
City should focus on sewage treatment, 60% unused: CSE report
KSPCB releases STP guidelines, relaxes treated water norms
Treated water aplenty, not a drop for parks…
As citizens challenge steep STP fees, KSPCB may relent
Pollution watchdog to support apartments for better STPs
STP mess partly due to our lack of clarity: KSPCB chief


  1. Lingaraj Dinni says:

    Yes, the BWSSB sewage charges are confusing. In fact it should be the other way, BWSSB should compensate apartments for discharging excess treated water into UGD and thus flushing the untreated sewage and keeping them clog free. The best approach is for BWSSB, BBMP and KSPCB to work together and help apartments discharge treated water meeting standards through a constructed wetland into neighborhood lakes. This can be easily done by dedicated lines and providing approvals and guidance to apartments , especially in the peripheral areas. Keeping water in the same geographical limit will help the ground water table and save energy costs of downstream BWSSB STP’s….

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