Singapore’s trusted pool maintenance specialists.
Hydrology keeps swimming pools performing at their best. We maintain pools for condominiums, hotels, clubs, institutions and landed properties across Singapore. From water care to equipment servicing, every detail is handled with precision and consistency.
What we do
Everything your pool needs, from one team.
Practical pool services for ongoing maintenance, fault-finding and upgrades across swimming pools and water features.
Water Tank Cleaning
Scheduled cleaning to remove sediment, debris and build-up, supporting cleaner water and dependable system performance.
Read morePool Leak Detection & Repair
Pool leak detection and targeted repair to identify water loss early and resolve issues before they develop into larger repairs.
Read morePool Light Replacement
Safe replacement and installation of faulty pool lights and related equipment, with access and site conditions assessed before work begins.
Read morePool Cleaning
Routine pool maintenance covering surface cleaning, filtration checks, water clarity and algae control, with service frequency matched to site needs.
Read morePool Tiling Works
Tile replacement and repair for worn, damaged or loose finishes, including renovation work where broader construction is required.
Read moreOur portfolio
Before and after, real Hydrology work
Drag the slider to see the difference. Real jobs across filtration, strainers, refurbishing, chemical washing and pool cleaning.
Before
After
Filtration cleaning · Clogged, rusted filter cartridge restored to clean flow.

Why Hydrology
Trusted by the people who manage pools.
Weekly maintenance, island-wide
A reliable maintenance schedule for commercial and residential clients, with regular checks on water quality, water chemistry, filtration and cleaning.
Maintenance plus repair
One partner for planned swimming pool services and responsive repairs, including swimming pool filter servicing, pool equipment faults and pump issues.
One team, one number
Speak to people who know the site instead of being passed between multiple teams. We coordinate routine work, troubleshooting, supply and installation through one company.
Smarter pool maintenance
Technology that improves consistency
Robotic cleaning supports efficient servicing across different pool types and sizes.
Clear digital reporting
Service details are recorded through a tablet-based app. Clients receive digital reports with a clear record of completed work and issues found.
Experience across different properties
We maintain pools in landed homes, condominiums, commercial properties, international schools and country clubs.
Trusted by
Chosen by leading property names in Singapore
Reviews
What our clients say
"Reliable weekly service and quick to respond whenever we need a repair. Our residents never notice a problem, which is exactly the point."
"They keep our resort pools spotless and open all year. One team we can call for anything from cleaning to pump repairs."
"Professional, punctual and honest about what actually needs doing. Our pool has never looked better."
Frequently asked questions
Questions about our services
How often should a swimming pool be serviced?
Most pools need regular servicing to stay clean, balanced and reliable. We set the maintenance frequency to suit your pool’s usage, environment and system demands.
Can you help with a green pool or recurring algae?
Yes. We identify the cause of green water, then fix it. This may involve correcting water chemistry, restoring circulation, improving filtration or servicing faulty equipment.
Do you maintain infinity pools?
Yes. Infinity pool services may involve additional checks around balance tanks, edge channels, circulation and level control. We assess the infinity system as a whole rather than treating an infinity pool like a standard swimming pool.
Do you handle both maintenance and repairs?
Yes. The same team handles routine cleaning, preventive maintenance, repairs, replacements and servicing.
Can you support new pools or refurbishment projects?
Yes. We support new pool construction, refurbishment and addition works. All work is carried out in line with relevant local authority requirements and applicable codes of practice.
Who do you work with?
We support pool owners, managing agents, MCSTs, facility managers, property teams and homeowners. For larger projects, we also work with contractors, consultants and developers.
How is pricing worked out?
Pricing depends on pool size, access, condition, service frequency, equipment, fault complexity and the work required. Share your questions and site details with us for a tailored quotation rather than a generic package price.
Do you support formal water-quality or compliance requirements?
Yes. We manage water-quality and compliance requirements as part of our day-to-day operations, including testing, servicing, monitoring and documentation. This includes supporting sites with specific operational requirements and applicable NEA requirements.
Pool care tips and updates
View more
Can You Swim After Adding Pool Chemicals? A Timing Guide by Treatment Type
You have added the chemicals, the pump is running, and now comes the obvious question: when can people get back in the pool?
Read more
6 Signs Your Pool Contractor Is Treating Symptoms, Not Causes
If your pool looks clear, it is easy to assume the contractor is doing a good job. That is a fair assumption, but not always a safe one. A pool can look clear while still having…
Read more
5 Common Problems Found in Children’s Pools
If you have a children’s pool, you already know it gets just as much use as the main pool, if not more. And if one is misled to think that a smaller pool means fewer problems…
Read moreGet in touch
Get a quote or ask us anything
Tell us about your pool and we will get back to you.