Water systems
Local chlorine production for rural and small-town drinking-water networks.
- Batch or continuous production at the network
- Storage, dosing and injection at the reservoir
- Autonomous operation, solar compatible
Safe water. Better hygiene.
Produce chlorine where you need it.
Produce sodium hypochlorite locally to help control waterborne pathogens and support safe water and hygiene — in healthcare facilities, water treatment and humanitarian operations.
- Inputs
- Water · Salt · Power
- Output
- Sodium hypochlorite
- Operation
- Grid or solar
The challenge
1 in 4
people globally still lack access to safely managed drinking water.
1.7 billion
people still drink water contaminated with faecal matter.
Safe water and effective hygiene depend on reliable disinfection — wherever it is needed.
Sources: WHO / UNICEF Joint Monitoring Programme · WHO Drinking-water
The technology
Water. Salt. Electricity. That's all you need.
WATA produces sodium hypochlorite locally through the electrolysis of salt water. No chlorine shipment, no chemical stock to import — production happens at the point of use.
Applications
Three contexts where local chlorine production changes the operation.
Healthcare facilities
On-site chlorine and disinfectant production where supply chains are unreliable.
- Drinking-water chlorination
- Surface and equipment disinfection
- Infection prevention and control
Humanitarian response
Portable, robust chlorine production for emergencies and difficult logistics.
- Rapid deployment with locally available salt
- Less chemical transport and storage
- Solar operation in remote environments
Why local production
The chlorine arrives because you made it.
Independence
Produce chlorine where it is needed, without relying on regular chemical deliveries or distant suppliers.
Cost effective
Use salt, water and electricity to reduce recurring chemical procurement, transport and storage costs.
Reliable quality
Produce fresh sodium hypochlorite on site at a controlled concentration, instead of relying on chlorine that may degrade during storage and transport.
Simple & resilient
Simple inputs, straightforward operation and the possibility to work with grid, battery or solar power depending on the WATA configuration.
Environmental benefit
Less to transport. Less to throw away.
Local production can reduce recurring chemical transport and packaging waste, helping lower the environmental footprint of chlorination.
Product family
From a single health post to a town water network.
Four scales of the same principle. Batch volume and chlorine output increase; operation stays the same.
Mini-WATA
WATA-Standard
WATA-Plus
Maxi-WATA
2,500 L · Water treated / batch*
Small scale
Mini-WATA
- Active chlorine per batch
- 2.5 g
- Production cycle
- 2 h
- Daily production — 4 cycles/day
- 10 g/day
- Water treatment capacity*
- Up to 10 m³/day
Households, small health posts, training and demonstration
Specifications
10,000 L · Water treated / batch*
Facility scale
WATA-Standard
- Active chlorine per batch
- 10 g
- Production cycle
- 2 h
- Daily production — 4 cycles/day
- 40 g/day
- Water treatment capacity*
- Up to 40 m³/day
Health centres, small institutions, point-of-use chlorination
Specifications
75,000 L · Water treated / batch*
Institutional scale
WATA-Plus
- Active chlorine per batch
- 75 g
- Production cycle
- 2 h
- Daily production — 4 cycles/day
- 300 g/day
- Water treatment capacity*
- Up to 300 m³/day
Hospitals, humanitarian operations, small water systems
Specifications
300,000 L · Water treated / batch*
Network scale
Maxi-WATA
- Active chlorine per batch
- 300 g
- Production cycle
- 2 h
- Daily production — 4 cycles/day
- 1.2 kg/day
- Water treatment capacity*
- Up to 1,200 m³/day
Rural and small-town drinking-water networks
Specifications*Water treatment capacity calculated using a reference chlorine dose of 1 g/m³. Actual chlorine demand and treatment capacity depend on raw water quality, operating conditions and the required residual chlorine level.
Daily production figures are based on 4 production cycles of 2 hours per day.
Comparison
| Specification | Mini-WATA | WATA-Standard | WATA-Plus | Maxi-WATA |
|---|---|---|---|---|
| Batch volume | 0.5 L | 2 L | 15 L | 60 L |
| Chlorine concentration | 5 g/L | 5 g/L | 5 g/L | 5 g/L |
| Active chlorine per batch | 2.5 g | 10 g | 75 g | 300 g |
| Production cycle | 2 h | 2 h | 2 h | 2 h |
| Daily active chlorine production (4 cycles) | 10 g/day | 40 g/day | 300 g/day | 1.2 kg/day |
| Water treated per batch* | 2,500 L | 10,000 L | 75,000 L | 300,000 L |
| Daily water treatment capacity (4 cycles)* | 10 m³/day | 40 m³/day | 300 m³/day | 1,200 m³/day |
| Electrical requirements | 10 W | 36 W | 216 W | 888 W |
| Solar compatibility | Solar kit available | Solar kit available | Solar kit available | Designed on demand |
| Kit dimensions & weight | 39 × 17 × 12 cm · 0.8 kg | 34 × 25 × 23 cm · 2.4 kg | 50 × 26 × 34 cm · 6.7 kg | 50 × 26 × 34 cm · 8 kg |
| Typical applications | Households, small health posts, training and demonstration | Health centres, small institutions, point-of-use chlorination | Hospitals, humanitarian operations, small water systems | Rural and small-town drinking-water networks |
*Water treatment capacity calculated using a reference chlorine dose of 1 g/m³. Actual chlorine demand and treatment capacity depend on raw water quality, operating conditions and the required residual chlorine level.
Daily production figures are based on 4 production cycles of 2 hours per day.
WataTest
Control reagent for available chlorine — verifies the concentration of the solution produced.
WataBlue
Reagent used to check residual chlorine in treated water.
WataStab
Stabiliser extending the shelf life of the produced hypochlorite solution. [CONTENT TO CONFIRM]
Sizing assistant
Find your WATA.
Answer what you know. We estimate the daily chlorine demand and suggest a starting configuration.
Daily chlorine requirement [g/day] = daily water consumption [m³/day] × dose [mg/L]
Example: 150 × 1.5 = 225 g/day
WATA · Step 1 of 8
Volume of water to be chlorinated each day.
m³/day
Energy autonomy
Chlorine production beyond the grid.
From ready-to-use solar modules to custom-designed systems, WATALUX provides the power solutions to produce chlorine where reliable electricity is not available.
Plug & play
Ready to operate.
Complete, compact and preconfigured solar modules for Mini-WATA to WATA-Plus.
Solar module
Power unit (battery + control)
Connection
WATA in tank (chlorine production)
Mini-WATA | WATA-Standard | WATA-Plus
Custom design
Tailored to your project.
On request, we design complete solar power systems for Maxi-WATA and specific installations.
Solar array
Energy management & storage
Connection
WATA in tank (chlorine production)
Maxi-WATA | Custom configurations
Complete chlorination system
The electrolyser is one part of the chain.
WATALUX supports the full path from water source to treated water: production, energy, storage, dosing, injection, measurement and operator knowledge.
Field experience
Proven in the field.
Verified WATA deployments, documented project by project. New field records are added as they are validated.
Deployment record
Benin — Rural water supply & health centres
With the Directorate General for Water, GIZ rehabilitated village water supply systems across Benin with small treatment plants: borehole water is pumped, chlorinated and distributed through village standpipes. WATA devices let operators produce liquid chlorine on site, and a dosing pump injects the active chlorine directly into the network. After a first phase equipping 31 rural water supplies at the end of 2020, the programme scaled in 2021 with 25 additional water supplies and 69 health centres equipped with WATA for water and surface disinfection. Implementation: Burex-3eA and WATALUX SA.
- Stakeholders
- GIZ (German cooperation) · Directorate General for Water
- Application
- Rural water network chlorination & infection prevention in health centres
- System
- WATA + dosing pump, chlorine injected into the water network
- Context
- National programme, launched end of 2020 and scaled up in 2021
- Capacity served
- 56 autonomous village water supply systems · 69 health centres
- Project sheet
- View the project sheet (PDF)
Organizations using WATA
A selection of humanitarian, health and development organizations using WATA solutions worldwide.
…and many more organizations and local partners worldwide.
About WATALUX
Small team.
Serious field experience.
WATALUX is the Geneva-based team behind WATA technology. We bring together engineering, water and humanitarian field experience to develop practical chlorine-production systems for demanding environments.
We stay closely involved from technical assessment and system design to installation, training and field support, working alongside customers and local partners.
Meet the team and discover our storyContact
Let's talk about your project.
Have a project, a technical question or want to learn more about WATA? Our team is here to help.