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Every drop counts. Efficiency can’t wait.

Water is life. But behind home, farms, and factories, utilities are battling invisible waste every day.  Whether through leaking pipes, inaccurate meters, or manual monitoring delays, inefficiencies cost resources, trust, and money. At Waltero, we believe water utilities deserve tools that detect trouble before it’s seen — helping communities stay hydrated, economies stay stable, and nature stay balanced.  

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Test the waters with our Exploratory Kit

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Experience the Waltero Solution in your real-world setup. The Exploratory Kit gives you all you need to pilot Waltero — hardware, software access, training, and support. Use it to get key data, prove value internally, and see first-hand how predictive water monitoring can work in your environment.

Request an Exploratory Kit

Water & wastewater

One network. Every point monitored.

Hover an asset to see what Waltero measures there, click it for details and use cases. Every pin is a W-Sensor reading the meters, gauges, levels and screens you already have, at the interval you choose.

Drinking water
Stormwater
Wastewater
W-Sensor point

Raw water source

Zone: Source & production

Lakes, rivers and intake

Know your raw water before it enters the plant.

Intakes and reservoirs are the first place a problem shows up, and usually the last place anyone visits. Waltero puts a battery-powered W-Sensor at the intake; it reads the level, the screen and the pump gauges at a set interval and sends every reading to Mimir, without any cabling.

What we monitor

Raw water level — Level in lakes, rivers and intake chambers, read against a calibrated scale at a set interval, with trend alarms for drought and flood.
Intake screens and trash racks — Vision AI checks the screen on every reading and flags debris and clogging before the differential level builds up.
Raw water pumps — Gauges read in place plus a vibration fingerprint of each pump: run events, duration and trends, with an alert on deviation from the normal pattern.
Turbidity and temperature — Where the intake has a turbidity meter or a thermometer, Vision AI reads its display at a set interval and keeps the trend.

Learn more

How it works

Back to the network map

Mount. Read. See.

A W-Sensor mounts on the meter, gauge or display you already have, reads it at the interval you set, and sends the number to Mimir. Nothing on the asset changes, and nothing needs wiring.

Hinged adapter, existing meterBattery powered

Last reading3.6bartaken 14 min ago

Interval15 min1 h6 h24 h

Sprinkler riserBelow 4.0 bar

3.6bar

Trend 30 dExcel · APIFeeds BMS

Mount
Fix a W-Sensor over the meter, gauge or display you already have. The adapter is hinged, so the meter stays readable and nothing on the asset is changed.
No plumbing. No wiring. No downtime.
Read
At the interval you set, the sensor photographs the dial or display and reads the value on the device itself. Only the reading is transmitted, never a video stream; the image behind it is kept for audit.
Hourly by default; from every 15 minutes to once a day.
See
Readings land in Mimir, up to date as of the last interval, with trends, alarm thresholds, exports and an API that can feed your BMS or energy reporting.
One screen for every meter, gauge and level on the network.

10+ years on a batteryReplaceable with two screws when the interval is short or the batteries age.

LTE-M / NB-IoT cellularWi-Fi where a site prefers it. On cellular the sensor never touches your OT or office network.

No gateway, no hubEach sensor talks to Mimir directly. One device per reading point, nothing in between.

Paired in under 60 secondsiOS or Android app: scan, name the point, set the interval. The first reading follows on the next tick.

See it on one of your gauges About the W-Sensor

Distribution

See the water meter retrofit page Back to the network map

Pumps, storage and every meter in the network.

Pump stations, towers and reservoirs, and the meters at households, large consumers and industry: the numbers the network is balanced and billed on. Waltero reads them in place, at the interval you choose, with no meter swap and no rewiring, so pressure, storage and consumption are up to date and the DMA balance means something.

Distribution pump station

Know how your pumps normally run, and see when they don't.

Pump stations set the pressure for the whole zone. Waltero learns a fingerprint of how each pump normally runs and reads the gauges beside it at a set interval, so a change in behaviour is a planned job instead of a callout.

What we monitor

Pump fingerprint
A learned baseline of each pump's vibration and run pattern: run events and their duration, trends over time, and an alert when a pump deviates from its normal behaviour.
Outlet pressure
Vision AI reads the existing discharge pressure gauge and alerts when the pressure leaves its normal band.
Run time and energy
Starts and run hours, plus kWh per pumped cubic metre where there is an energy meter to read.
Delivered flow
Flow into the network from the existing meter, for balancing and DMA calculations.

Learn more

Talk to us about distribution pump station

Water towers & reservoirs

Storage levels and water age, always in view.

Water towers, ground-level tanks and underground reservoirs buffer the network, and the buried ones are the hardest to keep an eye on. A stuck float or a slow leak can go unnoticed for weeks. Waltero gives you an up-to-date level curve and a water-age estimate for every tank, above or below ground.

What we monitor

Tank and reservoir level
Level in elevated, ground and underground tanks read at a set interval, with fill and drain cycle analysis and overflow alarms.
Chlorine residual
Where there is an analyser or a logged sample point, the residual is trended against tank turnover to spot stagnation.
Intrusion and hatch
A camera on a remote site flags an open hatch or door on the next reading.

Learn more

Talk to us about water towers & reservoirs

Residential area

Turn every existing meter into a smart meter.

Replacing thousands of household meters takes years. Waltero's W-Sensor reads the mechanical meter that is already there with Vision AI, at the interval you choose, so you get consumption-based billing, leak alerts and ESG-ready figures from day one.

What we monitor

Meter reading
Vision AI reads the existing mechanical meter in place; no meter swap, no plumber, no interruption of supply.
Accurate consumption billing
Bill on actual, frequent readings instead of estimates and yearly self-reads.
Continuous-flow leaks
A night reading that never stops moving flags a leak on the customer side.
ESG and water-loss reporting
Measured consumption and water-loss figures for sustainability and ESG reports.

Learn more

Talk to us about residential area

Commercial buildings

The few meters that move most of the water.

A handful of large consumers dominate a district's demand. Reading their meters at a set interval makes billing match actual use, gives property owners measured figures for ESG reporting, and makes the DMA balance meaningful.

What we monitor

Accurate consumption billing
Frequent reads on large-consumer meters, so invoices follow actual use.
ESG reporting
Verified water use per property for your and your customers' sustainability reports.
District metering areas
Inflow versus consumption per DMA, calculated in Mimir from the same readings.
Zone pressure
Vision AI reads the existing pressure gauges at critical points, so a burst or a pressure drop shows up on the next reading.

Learn more

Talk to us about commercial buildings

Industrial site

Both ends of the pipe, on one dashboard.

Industrial customers take water in and send wastewater out under permit. Waltero reads both sides at a set interval, the intake meter, the storage tanks and the discharge instruments, and shares the same data with the utility and the site.

What we monitor

Intake metering
Actual volumes from the existing meter for consumption-based billing and abstraction reporting.
ESG reporting
Measured water intake and discharge per site for ESG and CSRD disclosures.
Storage tank levels
Process water and chemical tank levels read in place, with reorder alarms.
Effluent discharge
The flow meter and the pH and temperature displays at the discharge point read at a set interval, for the permit log.

Learn more

Talk to us about industrial site

What your technicians drive to today

Tick the checks staff still do by hand in this part of the network and adjust how often and how long. Every one of them is a reading a W-Sensor can take instead.

0manual readings a year

0hours of driving, walking and writing

0working days a year

Show the checklist

Outlet pressure Distribution pump station — Weekly, 10 min
Run time and energy Distribution pump station — Monthly, 10 min
Delivered flow Distribution pump station — Weekly, 5 min
Tank and reservoir level Water towers & reservoirs — Daily, 5 min
Chlorine residual Water towers & reservoirs — Daily, 10 min
Meter reading Residential area — Monthly, 15 min
Zone pressure Commercial buildings — Weekly, 10 min
Intake metering Industrial site — Monthly, 15 min
Storage tank levels Industrial site — Daily, 5 min
Effluent discharge Industrial site — Daily, 10 min

Estimates you can edit; minutes include getting there and writing it down. With Waltero the reading interval is a setting, and the log writes itself.

Stormwater

Back to the network map

Streets, basins and groundwater, measured for every rain event.

Stormwater assets are sized on paper and found failing by residents. A W-Sensor in the critical inlets, culverts and basins reads the level and checks the grate at a set interval, so capacity, blockages and lost storage show up as a curve per rain event instead of a complaint.

Streets & drains

See the street flood before the phone rings.

Blocked catch basins and surcharging culverts are found by residents, not by the utility. A W-Sensor in the critical inlets and culverts reads the level and checks the grate at a set interval, so you see where capacity is running out while a storm is still building.

What we monitor

Catch basin and culvert levels
Water level in catch basins, gullies, culverts and tunnels read against a calibrated scale, with surcharge alarms.
Rain response
Level against the local weather shows a blocked inlet or a culvert at capacity long before it floods.
Blocked inlets
Vision AI flags debris on the grate on the next reading, before the next rain.

Learn more

Talk to us about streets & drains

Basins & groundwater

Prove the basin does what it was designed for.

Retention, detention and infiltration basins are sized on paper and rarely measured afterwards, and groundwater is often only sampled a few times a year. A W-Sensor gives you the level curve for every rain event and a regular groundwater record, so you can verify capacity, plan maintenance and report with data.

What we monitor

Basin level
Retention, detention and infiltration basins: fill and drain curves per rain event, with overflow alarms.
Groundwater and aquifers
Level in observation wells read at a set interval to follow recharge, infiltration and drawdown.
Outlet flow
Controlled discharge to the receiving water or the downstream network, from the existing meter or a level over the weir.
Rain response
Rainfall versus level to track sedimentation and lost capacity over time.

Learn more

Talk to us about basins & groundwater

What your technicians drive to today

Tick the checks staff still do by hand in this part of the network and adjust how often and how long. Every one of them is a reading a W-Sensor can take instead.

0manual readings a year

0hours of driving, walking and writing

0working days a year

Show the checklist

Catch basin and culvert levelsStreets & drainsDaily, 5 min
Blocked inletsStreets & drainsDaily, 10 min
Basin levelBasins & groundwaterDaily, 5 min
Groundwater and aquifersBasins & groundwaterMonthly, 15 min
Outlet flowBasins & groundwaterWeekly, 5 min

Estimates you can edit; minutes include getting there and writing it down. With Waltero the reading interval is a setting, and the log writes itself.

Combined sewer (CSO)

See the CSO monitoring page Back to the network map

Every overflow counted, verified and reported.

Combined sewer overflows must be measured and reported under the revised EU Urban Wastewater Treatment Directive. Waltero's trigger-then-verify approach uses a level reading to detect the spill and a camera image to confirm it, so each event carries its time, duration and evidence. We are looking for partner utilities to co-develop this with.

CSO outfall

Count every overflow. Report it with confidence.

Combined sewer overflows must be measured and reported under the revised EU Urban Wastewater Treatment Directive. Waltero's trigger-then-verify approach uses a level reading to detect the spill and a camera image to confirm it, so each event is documented with time, duration and evidence.

In development: we're looking for partner utilities to co-develop this solution.

What we monitor

Overflow detection
Level in the chamber and over the weir, with event start and stop timestamps.
Visual verification
A camera image confirms the spill and rules out false triggers.
Event reporting
Duration, frequency and estimated volume per outfall, ready for the regulator.

Learn more

Solution: CSO monitoring

Become a development partner

What your technicians drive to today

Tick the checks staff still do by hand in this part of the network and adjust how often and how long. Every one of them is a reading a W-Sensor can take instead.

0manual readings a year

0hours of driving, walking and writing

0working days a year

Show the checklist

Overflow detection CSO outfall — Weekly, 10 min
Visual verification CSO outfall — Daily, 5 min

Estimates you can edit; minutes include getting there and writing it down. With Waltero the reading interval is a setting, and the log writes itself.

Wastewater

Back to the network map

Pump stations and the plant, without the drive.

Small pump stations are numerous, remote and often unconnected, and the treatment plant still has tanks and gauges outside SCADA. Waltero reads the wet-well level, the pumps' behaviour and the plant's analogue instruments at a set interval, so blockages, overflows and drifting readings are alarms rather than discoveries.

Wastewater pump stationWastewater treatment

Wastewater pump station

Stop the overflow before it reaches the street.

Small pump stations are numerous, remote and often unconnected. A W-Sensor on the wet well and the pumps brings them online in an afternoon, with the level, the run pattern and deviations from each pump's normal behaviour reported to Mimir at a set interval.

What we monitor

Wet well level
Level read against a calibrated scale at a set interval, with high-level and overflow alarms.
Pump fingerprint
A learned baseline of normal vibration and run pattern: run events, duration and trends, with an alert when a pump starts behaving differently.
Run time and energy
Starts per hour, plus energy per pumped cubic metre where there is an energy meter to read.
Blockage and overflow
A rising level while the pumps are running flags a blockage early.

Learn more

Talk to us about wastewater pump station

What your technicians drive to today

Tick the checks staff still do by hand in this part of the network and adjust how often and how long. Every one of them is a reading a W-Sensor can take instead.

0manual readings a year

0hours of driving, walking and writing

0working days a year

Show the checklist

Wet well level Wastewater pump station Daily 5 min
Run time and energy Wastewater pump station Monthly 10 min
Inlet flow and screens Wastewater treatment Weekly 5 min
Aeration and sludge tanks Wastewater treatment Daily 5 min
Effluent quality Wastewater treatment Daily 10 min
Analogue instrument reading Wastewater treatment Weekly 10 min

Estimates you can edit; minutes include getting there and writing it down. With Waltero the reading interval is a setting, and the log writes itself.

Wastewater treatment

From inlet screen to effluent, every stage measured.

Treatment plants already have SCADA, but the tanks, screens and gauges outside its reach are still checked by hand. Waltero reads those points at a set interval and feeds the same data into your existing system.

What we monitor

Inlet flow and screens
Inlet flow from the existing meter, screen blinding checked by camera, grit removal status.
Aeration and sludge tanks
Bioreactor, aeration and sludge tank levels read in place, including dewatering.
Effluent quality
The flow meter and the turbidity and temperature displays at the outfall read at a set interval.
Analogue instrument reading
Vision AI on the pressure gauges and flow indicators that are not on SCADA.

Learn more

Talk to us about wastewater treatment

Customer story

Back to the network map

VA SYD, southern Sweden

A regional water and wastewater utility with thousands of water inlets to keep clear of debris and within their levels, spread across the region and worst to reach in the weather that matters most.

Raw water intake with a W-Sensor point

Inlets checked by camera instead of by truck

We have a good collaboration with Waltero, and their product has already provided significant benefits to our operations at an early stage. Our team is now able to perform visual inspections from the office instead of having to drive out to the monitored facilities.

66% fewer on-site inspections

~15 days from installation to actionable data

0 cables pulled

Thousands of inlets, checked by driving to them

Water inlets across the region had to be inspected for debris and water level on scheduled rounds. Every check was a trip, the rounds were longest in bad weather, and a blockage between two visits was found by its consequences.

Scheduled trips whether or not anything had changed
Longest rounds in the worst weather
Blockages found after the fact

A camera sensor at each inlet, reporting to Mimir

Battery-powered W-Sensors were fitted at the inlets without cabling. Each sends an image and a level reading at a set interval; Vision AI flags debris and a rising level, and the technician sees the inlet from the desk.

No cabling, fitted in minutes per inlet
Image and level at a set interval
Debris and level flagged automatically

Two-thirds of the inspection trips gone

On-site inspections fell by 66 percent, with the labour and transport costs that went with them. Blockages are dealt with sooner because they are seen sooner, and the next phase adds further sensor types and trend insights on the same platform.

66% fewer on-site inspections
Faster response to blockages
Same platform for the next sensor types

Talk to us about your network Read the full case study

Technical specifications

Back to the network map

Built for plant rooms, not server rooms.

What the operations, OT and IT teams ask before a first installation, in one place. Everything here applies to every reading point on the network, from the intake screen to the household meter.

The sensor

What it reads: Mechanical and digital meters, pressure and temperature gauges, level indicators, display panels and status lamps. Anything a person can read, the camera can.
How it reads: A photo of the instrument at each interval, read on the device by Waltero's edge AI. Only the value is transmitted, never a video stream; the image behind any reading is available for audit.
Reading interval: Configurable per sensor in Mimir, from every 15 minutes to once a day. Hourly is the usual default for levels and pump stations; daily for household meters.
Mounting: Hinged adapter over the existing instrument. No plumbing, wiring or modification of the asset; the meter stays readable by hand.
Power: Battery powered, 10+ years at typical intervals. Batteries are replaced by removing two screws.
Environment: Sealed housing engineered for chambers, wet wells, pits, meter boxes and outdoor cabinets.
Tamper detection: The sensor reports if it is moved or opened.

Connectivity

Network: LTE-M, NB-IoT or LTE cellular with a SIM in every sensor; Wi-Fi where a site prefers it. Coverage is checked per site before installation.
OT and IT: None required on cellular. The sensor never joins your SCADA, OT or office network and needs no port, VLAN or firewall rule; it reads the instrument from the outside.
Gateways: None. Each sensor communicates with Mimir directly; there is no hub, repeater or on-site server.
Below ground and in chambers: LTE-M and NB-IoT are designed for deep-indoor coverage. A connection survey per site confirms it before sensors go up.

Security & data

Connections: Outbound only and encrypted. The sensor calls out to Mimir; nothing can call in to it.
Audit images: The image behind any reading is available on request, so a disputed value can be checked by eye.
Attack surface: No inbound ports and, on cellular, no presence on your OT or office network, so a sensor cannot be used as a way in.
Ownership: Your readings are yours: export any range as CSV, or pull them through the API.

Mimir platform

Readings: Every point on one screen, up to date as of the last interval, with the thumbnail behind each value.
Alarms: Thresholds and rate-of-change rules per point, with notifications to the people you choose.
Reporting: Readings per point, per site and per period; consumption per customer meter and per DMA; overflow and abstraction records; exports to Excel for regulatory and ESG reporting.
Integration: REST API and webhooks; readings can be pushed to SCADA, GIS, the billing system or a data warehouse; MQTT is available.
Access: Web application on desktop and mobile; an organisation per utility, with users and roles per plant, network or team.

CertifiedCEFCCPTCRBISO 9001ISO 14001

Request the full datasheet Maintenance of the W-Sensor

Next step

Bring your inspection round list. That is all we need.

Every utility already has the answer written down: the list of levels, gauges, meters and screens technicians drive to and read today. One conversation about that list tells us exactly which readings we can take over for you. The checklists above are a good place to start.

Talk to an expert Back to the network map

A short call with your operations or maintenance manager
We go through the rounds list together, point by point
You get it back marked up: what a W-Sensor can read, how, and what it costs

Trusted by water utilities from Skåne to Seville. Inspired by our customers. Built for the field.

VA SYD

66%fewer truck rolls

Read the VA SYD case study

Grundfos

“Remote physical readings from bulk water meters, with no billing discrepancies. With the IP68 enclosure we deploy it in some of the worst installation conditions.”

Pieter de WetCOO, ATOM Operations Ltd.

Aquanexa

Expanding storm water monitoring in SevilleVision AI · CSO & storm waterRead the EMASESA case study

WIONIQ

Beulco

“It adapts to real field needs. From landlord sub-metering to utility leak detection it deploys simply where other solutions were too heavy.”

OCOlivier CarmonaFounder, HydrIoTee

Gruppo CAP

NSVA

Sydvatten

Metasphere