Combining Nature & Artificial Intelligence

Waterthat thinks.

We take on fluoride with a patented, chemical-free process, run every kiosk on the sun, and watch every drop with AI. Arosia brings together nature's chemistry and machine intelligence so every community gets safe, affordable drinking water.

PATENTED DEFLUORIDATION IoT · 24×7 AI DIGITAL TWIN SDG 6
A girl drinking safe water from an Arosia water ATM in Kolkata
Kolkata · Arosia Water ATM
FLUORIDE · OUT0.62 mg/L
AI CONFIDENCE98.4%
SOLAR YIELD2.41 kW
1,00,000L+
Safe litres dispensed every day
25,000+
People with daily access
150t
Coal burning avoided each year
2–4%
Water wastage, versus RO's heavy reject
In the field

Real kiosks. Real people. Real water.

Arosia solar water ATM with rooftop solar panel in Ayodhya
Ayodhya · Solar Water ATM
Students collecting water at the Arosia solar water ATM in Konark, Odisha
Konark · Solar Water ATM
A woman refilling her bottle at an Arosia water ATM in Kolkata
Kolkata · Refill station
Arosia water ATM serving the Coal India worker colony in Salanpur
Salanpur · Coal India colony
Inauguration of 10 Arosia water ATMs in Agartala, Tripura
Agartala · 10 ATMs inaugurated
◈ Patented technology

Fluoride, removed by electricity, not chemicals.

Across India's fluoride belt, groundwater often carries several times the safe limit, which leads to dental and skeletal fluorosis. Our patented electrocoagulation process turns a small electric current into a precise coagulant. Fluoride is captured and filtered out with no chemicals to dose, no sludge-heavy alum and no RO reject stream.

The same cell also strips out arsenic, iron and bacterial load. Nanofiltration then catches pathogens, viruses and microplastics, while the minerals that make water good to drink stay in.

RAW BOREWELL
~6.0 mg/L
BIS PERMISSIBLE
1.5 mg/L
BIS ACCEPTABLE
1.0 mg/L
AROSIA OUTPUT
<1.0 mg/L

Reference: IS 10500:2012 drinking-water fluoride limits. Raw value shown is illustrative for high-fluoride aquifers.

Arosia EC + NFConventional RO
Chemical dosingNoneAntiscalants
Water wastage~2–4%High reject stream
Essential mineralsRetainedStripped
Cost-effectiveness~60% betterBaseline
01 · INTAKE

Sense the source

Inline probes read fluoride, TDS, pH and turbidity in the raw water, and that reading sets the dose for every batch.

02 · ELECTROCOAGULATE

Charge the cell

Electrodes release metal ions in situ. These bind fluoride and arsenic into stable flocs, with no added chemicals.

03 · SEPARATE

Settle & filter

The flocs settle out, and nanofiltration membranes then remove pathogens, viruses and microplastics.

04 · VERIFY

Prove every litre

Post-treatment sensors confirm water quality before it is dispensed, and every reading is logged to the cloud.

Diagram of the Arosia patented electrocoagulation process: raw water, electrochemical reactor, filtration, safe drinking water and sludge management
The patented electrocoagulation process, from raw water to safe drinking water. Fluoride-rich sludge is stabilised and reused as construction material.
Water Quality Monitoring

Every litre tested, before anyone drinks it.

Water you can't see can still make you sick. Each Arosia kiosk tests itself continuously. Sensors read the water before and after treatment, a bacteria check looks for E. coli, and the tap locks automatically if anything falls outside safe limits.

E. coli in drinking water is a sign of faecal contamination, which can carry cholera, typhoid and diarrhoeal disease. India's standard IS 10500 and the WHO guidelines both set the same rule: no E. coli detectable in any 100 mL sample.

How our water quality monitoring works →
Children at the Arosia water ATM in Salanpur
Safe water for the next generation · Salanpur
KIOSK KOL-01 · TREATED WATERExample readings
E. coli0CFU/100 mLNot detected
Fluoride0.62mg/LLimit 1.0
Turbidity0.4NTULimit 1
pH7.3Range 6.5–8.5
TDS182mg/LLimit 500
Arsenic<0.01mg/LLimit 0.01
UV intensity96%Lamp healthy
ORP410mVStable

Limits per IS 10500:2012 (acceptable). Readings shown are illustrative.

How we catch bacteria

  1. 1

    Watch around the clock

    Turbidity, ORP, UV intensity and flow are read every few seconds. A sudden change in these is often the first sign of a contamination risk.

  2. 2

    Test for E. coli

    Scheduled samples go through a rapid enzyme-based E. coli test. Field results arrive in hours instead of the days a lab takes.

  3. 3

    Stop the tap

    If a reading fails, the kiosk stops dispensing on its own and flushes the line. The operator and the local authority are alerted at the same time.

  4. 4

    Treat, retest, reopen

    The system runs extra disinfection and replaces any faulty part. Dispensing resumes only after a clean retest, and every step is logged.

Four barriers between germs and the glass

ElectrocoagulationFlocs trap bacteria together with fluoride and arsenic, and settle them out.
NanofiltrationMembrane pores physically block bacteria, most viruses and microplastics.
UV disinfectionUltraviolet light inactivates any microbes that remain, with no chemicals or taste.
Safety interlockThe tap opens only when sensors confirm every barrier is working.
The Arosia Stack

Hardware that purifies. Software that remembers. AI that anticipates.

Every kiosk is a node in one connected water network, which runs from the sensor up to the cloud.

01EDGE

IoT Sensing

Flow, TDS, fluoride, pH, turbidity, tank level, solar yield and battery state are streamed from every kiosk over GSM/4G, and buffered on the device when the network drops.

  • Water quality
  • Energy telemetry
  • Tamper alerts
02SOFTWARE

Arosia Cloud & App

A web dashboard for operators and governments, plus a consumer app for UPI and wallet payments and home delivery of cans. Every transaction is mapped to a user, so subsidies can be targeted.

  • UPI · Wallet · Card
  • Fleet console
  • Open APIs
03INTELLIGENCE

AI Water Management

Models learn how each site behaves, including demand cycles, aquifer drift and component wear. They then act on that knowledge: tuning the dose, scheduling maintenance and balancing energy before anyone notices a problem.

  • Forecasting
  • Anomaly detection
  • Autonomous tuning
04ENERGY

Solar-first Power

Off-grid PV with smart battery management, plus grid-hybrid where it is available. Each off-grid kiosk avoids about 2,500 kg of coal burning every year.

  • Off-grid
  • Hybrid
  • MPPT
05ACCESS

Water ATMs, 24×7

Cashless, pay-per-litre kiosks that anyone can use without help. They are built for villages, schools, transit hubs, industrial colonies and dense urban neighbourhoods.

  • Self-service
  • RFID / QR
  • Multilingual
06ACCOUNTABILITY

Impact Ledger

Litres served, people reached, CO₂ and plastic avoided are all verified from transaction data. The reports are ready for CSR, ESG and grant reviews.

  • ESG-ready
  • SDG mapping
  • Audit trail
Digital Twin

Every kiosk has a living mirror in the cloud.

The twin turns sensor streams into a model you can simulate. Pick a scenario below and watch the AI respond.

TWIN · KIOSK AGT-07 · AGARTALA --:--:--
AI CLOUD PV · 2.41 kW BATT · 82% RAW WATER F⁻ 4.20 mg/L EC CELL · PATENT 3.2 A NANOFILTER HEALTH 94% UV F⁻ 0.62 mg/L UPI ✓ ATM ALERT
Run a scenario
Fluoride out
0.62mg/L
TDS
182ppm
Flow
12.0L/min
Battery
82%
◉ Arosia AI

All systems nominal. The fluoride dose is tuned to the morning aquifer reading.

→ No action needed · next self-check in 15 min

Interactive simulation for illustration only. Values are synthetic.

Predictive maintenance

Membrane, electrode and pump wear are forecast days ahead, so technicians arrive before a failure does.

Contamination risk forecasting

Aquifer drift and seasonal spikes are spotted early, and treatment adapts on its own.

Energy orchestration

Weather-aware charging and load shifting keep off-grid kiosks dispensing through the monsoon.

What-if planning

New sites, capacity upgrades and subsidy policies can be tried on the twin before anything is built.

Deep Intelligence

From raw signals to water wisdom.

The intelligence comes in four layers. Each turns the data from the layer below into a better decision.

Request a platform demo →
L1

Perceive

Multi-sensor fusion cleans noisy field data, calibrates drifting probes and fills gaps when connectivity drops.

L2

Understand

Site-specific models learn each aquifer's chemistry, each community's demand rhythm and each component's health profile.

L3

Predict

Time-series forecasting and anomaly detection flag contamination risk, demand surges and failures before they happen.

L4

Act

Closed-loop control adjusts EC current, backwash cycles and energy use, and raises work orders automatically. People stay in charge of every critical decision.

L∞

Learn across the fleet

Lessons from one kiosk improve all of them. A fix discovered in Tripura protects a kiosk in Odisha the next morning.

Our philosophy

Combining Nature & Artificial Intelligence.

We don't fight nature with chemicals. We learn how nature works, and then use intelligence to make it work at scale.

Solar panel powering an Arosia water ATM in a garden in Ayodhya

Nature gives us

  • The sunFree and abundant energy that powers off-grid kiosks with zero fuel.
  • ElectrochemistryThe same ion chemistry that clarifies rivers, now running inside a compact patented cell.
  • MineralsCalcium and magnesium are kept in the water, not stripped out as RO does.
  • BalanceVery little reject water, so aquifers keep what they need.

Intelligence adds

  • PrecisionThe dose adapts to every litre's chemistry in real time.
  • ForesightForecasts for weather, demand and contamination.
  • ReliabilityPredictive maintenance keeps taps flowing 24×7.
  • ProofTransparent, verifiable impact for every rupee invested.
Sustainable Development Goals

Built around SDG 6, and reaching well beyond it.

6

Clean Water & Sanitation

Our core mission. We deliver safe, affordable drinking water and treat access to it as a human right, especially in fluoride- and arsenic-affected regions.

3

Good Health & Well-being

Preventing fluorosis and waterborne disease at the source.

7

Affordable & Clean Energy

Solar-powered kiosks for off-grid communities.

9

Industry, Innovation & Infrastructure

Patented technology combined with IoT and AI.

11

Sustainable Cities

Urban kiosks that cut down on single-use plastic bottles.

12

Responsible Consumption

2–4% wastage and refillable containers.

13

Climate Action

150+ tonnes of coal burning avoided every year.

17

Partnerships for the Goals

Working with government, CSR and community partners.

Impact

Measured in litres, lives and tonnes not burned.

100kL/day

Safe water, every day

Dispensed across our network, and every litre is traceable to a transaction.

25k+

People served

Villages, worker colonies, schools and city neighbourhoods across eastern India and beyond.

2.5t/kiosk

Coal avoided per kiosk

Every year, for each off-grid solar water ATM, adding up to more than 150 tonnes across the fleet.

100k+

Plastic bottles displaced

Refill culture at urban kiosks replaces single-use bottled water.

60%

More cost-effective

Lower capex and opex than conventional treatment, which keeps the price per litre affordable.

0chem

Chemicals dosed

Our patented electrocoagulation needs no chemical additives.

Deployments

From our first ATM in Kolkata to communities across India.

  • Kolkata, West BengalFirst water ATM · HQ
  • Agartala, Tripura10 water ATMs
  • Salanpur, West BengalCoal India worker colony
  • Konark & Khamar, OdishaCommunity kiosks
  • Lansdowne, UttarakhandHill deployment
  • Ayodhya, Uttar PradeshSolar water ATM
Ten Arosia water ATMs inaugurated in Agartala
Agartala
Arosia solar water ATM with solar array in Konark
Konark
Arosia water ATM at Salanpur
Salanpur
Paying by UPI at an Arosia water ATM in Kolkata
Kolkata
Arosia receiving the ET Leaders of Tomorrow award, 2021
ET Leaders of Tomorrow · Best Startup, Energy & Environment, 2021
Arosia team at the UN Ocean Youth Conference 2022 in Lisbon
UN Ocean Youth Conference · Lisbon, 2022
2021
ET Leaders of TomorrowBest Startup, Energy & Environment
2022
UN Ocean Youth ConferenceLisbon, Portugal
◈
Patented defluoridationChemical-free electrocoagulation process
FAQ

Questions, clearly answered.

What is a water ATM?

A water ATM is an automated, self-service kiosk that purifies water on site and dispenses it on demand. Users pay per litre with UPI, a smart card or a mobile wallet. Arosia water ATMs are IoT-connected, so water quality and machine health are monitored in real time.

How does a solar water ATM work?

Solar panels power the purification train and the dispensing unit, and battery storage covers night-time and cloudy days. That gives off-grid villages safe water 24×7, avoids coal-fired grid power and diesel, and brings running costs down sharply.

How does Arosia remove fluoride from water?

We use a patented, chemical-free process based on electrocoagulation. A controlled current releases coagulant ions from electrodes, and these bind fluoride into flocs. The flocs are then separated and filtered, which brings fluoride within the BIS IS 10500 limit for drinking water.

Is your purification RO-based?

No. Arosia specialises in non-RO purification that combines electrocoagulation with nanofiltration. Essential minerals stay in the water, and wastage is kept to about 2–4%.

How do you detect E. coli and bacteria in the water?

Sensors watch turbidity, ORP, UV lamp intensity and flow continuously, because sudden changes in these flag a contamination risk early. Scheduled samples are also checked with a rapid enzyme-based E. coli test. If any check fails, the kiosk stops dispensing, flushes, disinfects and retests before it reopens.

What is a water digital twin?

A live virtual model of a physical water system. Our twin mirrors each kiosk using IoT data, so AI can forecast contamination risk, predict maintenance needs and optimise energy before problems ever reach users.

Who do you work with?

Government bodies and municipalities, PSUs and CSR programmes, panchayats, schools, industrial townships and private site owners. We handle design, installation, operation and impact reporting.

Contact

Let's bring safe water to your community.

Planning a water ATM deployment, a CSR project or a fluoride-affected district programme? Talk to our team.

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