Our Core Services
Overhead Tank Cleaning
Complete cleaning of rooftop and terrace tanks including sludge removal, high pressure washing and disinfection.
Underground & Sump Cleaning
Pump-out, suction vacuum cleaning, manual scraping and cleaning for underground tanks and sump pits.
Apartment & Society Maintenance
Scheduled maintenance contracts, large volume cleaning, access management and documentation for housing societies.
Anti-Bacterial Disinfection
Measured application of approved disinfectants with contact time control and safety procedures.
Water Sampling & Laboratory Testing
Microbial and basic chemical testing to validate cleaning effectiveness and ensure drinking water safety.
Repairs, Screening & Upgrades
Inlet screens, overflow guards, cover replacement, ladder safety and minor civil repairs.
Detailed Services & Methodology
A-One Water Tank Cleaning provides a comprehensive suite of services designed to restore and maintain the hygienic condition of water storage systems of all sizes. Our offerings are tailored to common water storage scenarios encountered across Bangalore—single household rooftop tanks, multi-storey apartment systems, underground service tanks, commercial kitchens, factories and institutional facilities such as schools and hospitals. Each job combines a standardized scientific approach with on-site customization so that the cleaning, disinfection and verification steps are effective and efficient.
The process begins with a pre-cleaning assessment. Our technician inspects the tank for structural issues, identifies inlet and outlet locations, documents access constraints and records the approximate volume of water present. We also note any visible contamination—algae, biofilm, sediment or foreign objects—and take baseline photographs. This assessment helps us select the right combination of manpower, equipment and chemicals for the job, and ensures safety protocols are appropriate for confined-space entry when needed.
Draining and safe water handling is the next step. For overhead tanks, water is drained in a controlled manner using the building’s drainage network or by pumping into approved containers. For underground tanks and sumps, we deploy submersible pumps and suction units that safely remove water while preventing contamination of local drains. Where customers require, we collect and store top-up water to minimize service interruption. We follow local disposal guidelines—spoil material and contaminated washings are not tipped into storm drains but disposed through approved means.
Physical cleaning is performed by trained technicians equipped with personal protective equipment (PPE) and tools such as non-abrasive brushes, shovels and industrial wet-vacuums. Sludge and settled sediments are carefully removed and captured. For surfaces with stubborn encrustation we use high-pressure jet cleaning at pressures that dislodge deposits without harming the tank lining. For concrete tanks we adjust water pressure and techniques to avoid surface erosion. All detachable components—strainers, inlet pipes and covers—are removed, cleaned and inspected.
After the physical removal of dirt, we rinse the tank thoroughly and proceed to apply scientifically selected disinfectants. Our chemical selection follows safety and dosing guidelines to ensure microbial kill while minimizing harmful residues. The disinfectant application uses measured concentrations and a documented contact time. This step eliminates bacteria, algae and other microbial contaminants that survive physical cleaning. Technicians use neutralization and flushing protocols to ensure that post-treatment water is safe for reuse, and we advise on the required time before refilling based on the product used.
Quality verification is an important part of our service. We perform a final visual inspection and measure simple parameters such as turbidity and odor. For added assurance, customers can opt for laboratory microbial testing: we send pre- and post-cleaning water samples to accredited labs to confirm reductions in coliforms, E. coli and heterotrophic plate counts. The combination of visual evidence, documented process logs and lab results provides transparent proof of service.
Beyond deep cleaning, our preventive maintenance services are designed to minimize the frequency of major cleanings. We offer regular scheduled visits—quarterly, biannual or annual—depending on usage and contamination risk. During preventive visits we perform targeted cleaning, reapply protective treatments if needed, inspect screens and vents, and provide caretakers with simple daily maintenance checklists. For apartment complexes and commercial clients we supply digital reports and cleaning certificates after each visit so management has a record for health audits and compliance.
We also provide ancillary services that extend the lifespan and hygiene of water systems: installation of inlet screens to stop leaves and debris, overflow guards, lockable manhole covers, ladder and safety railings, and minor civil repairs on tank joints and plaster. For large-scale systems we offer project-based services such as tank lining restoration and installation of access hatches in convenient locations to improve future maintenance access.
Our team places a strong emphasis on safety and training. Technicians undergo confined-space entry training, chemical handling instruction and regular refreshers on PPE usage. We maintain checklists at every step—entry permit, atmosphere testing where applicable, buddy-system monitoring and emergency procedures—ensuring both worker safety and reduced liability for property owners.
Environmentally responsible disposal is built into our workflow. We separate solids and solids-laden wastes for appropriate disposal, minimize chemical runoff, and recommend solutions that balance effectiveness with environmental impact. Where requested we can coordinate with municipal agencies for approved disposal of hazardous wash water.
Finally, our documentation and customer support set us apart. Every cleaning job is accompanied by a printed or digital certificate that describes the tasks performed, chemicals used, safety steps taken and recommendations for follow-up. This makes compliance straightforward for residential associations, schools and commercial kitchens that may be subject to health inspections.
In short, A-One Water Tank Cleaning delivers a full-service package: expert assessment, careful cleaning, verified disinfection and proactive maintenance planning to keep your water safe and your systems reliable. Our approach reduces waterborne disease risks, improves water clarity and taste, and gives building owners confidence through traceable documentation.
Specialized Services for Different Sectors
Residential Homes
Single family homes benefit from periodic cleaning every 6–12 months. We focus on safe refilling and caretaker guidance to reduce re-contamination.
Key Deliverables
- Sludge removal & vacuuming
- Disinfection with safe dosing
- Inlet/overflow screen fitment
Apartments & Societies
Large capacity systems receive scheduled plans and digital reporting. We manage logistics, safety and minimal disruption to residents.
Key Deliverables
- Mass sludge extraction
- Team coordination & safety management
- Post-cleaning certificate & reports
Commercial & Industrial Sites
Factories and commercial kitchens require compliance-grade cleaning using industrial protocols and documentation for audits.
Institutions: Schools & Hospitals
We provide protocols aligned with regulatory guidelines, scheduling around operating hours and delivering formal lab testing when needed.
Equipment & Trained Team
We use industrial wet vacuums, submersible pumps, controlled high-pressure jetters, calibrated dosing pumps for disinfectants and field testing kits for turbidity and basic microbial indicators. Our technicians are trained, insured and undergo regular equipment training.




Pricing Approach & Sample Plans
We provide transparent, site-specific pricing based on tank volume, accessibility and contamination level. Below are indicative plans to help you estimate costs.
Basic Home Plan
Up to 2,000 L. Includes draining, sludge removal, rinse and disinfection.
Indicative: ₹1,200 – ₹1,800
Travel charges may apply for outlying areas.Apartment Plan
Per tank pricing for large systems, includes team coordination and digital report.
Indicative: ₹3,500 – ₹9,000 per tank
Commercial & Institutional
Customized estimate after on-site assessment, includes lab testing option.
Starting ₹8,000
Frequently Asked Questions
How often should I get my water tank cleaned?
For most homes, annual cleaning is recommended. Apartments and high-usage systems often benefit from biannual or quarterly maintenance depending on contamination risk.
Is it safe to drink water immediately after cleaning?
We only refill tanks after ensuring rinsing and neutralization steps are complete. If lab testing is done, we wait for acceptable microbial results. Otherwise follow our advised wait time printed on the service report.
Do you provide lab testing?
Yes — we can collect pre- and post-cleaning samples and coordinate with accredited labs for microbial and chemical testing at an additional charge.
What chemicals do you use?
We use approved disinfectants and dosing is based on manufacturer instructions and safety guidelines. Full chemical details are included in the cleaning certificate supplied to clients.
Ready to Schedule a Cleaning?
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