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The company · our mission

The planet and the people using it come FIRST.

What we build Water treatment and monitoring technology, installed and measured at real sites.

The business was built around it, not the other way round.

Kostja Klabjan · CEO and co-founder
Scroll ↓
Line B · installed today
Environmental result Measured
99.5–99.6%
Marina Izola · Slovenia
Operational result Measured
1,401 litres
Fiume Veneto · Italy
See measured results →
One unit, two results

We turn compliance into a business model.

Putting the planet and the people first only holds if the business can survive doing it. Compliance is where it survives. Normally it is a cost: a company proves what it did because the law says so, assembles the paperwork by hand, and gets nothing back for it.

One unit takes a chemical out of one place and measures what changed. The chemical stays gone. The measurement is the proof — so the run that satisfies the regulator is the same run the business is paid for.

The measurements add up, site after site, into the record of how much harm has been removed. For the people on the other end of it: the ones who eat what left the line, and live where the water goes.

We got used to poisoning things a little — quietly, everywhere, all the time.

Chlorate in food.
Microplastic in the sea.
Photo slot · a chemical tanker on the road
Dangerous chemicals driven across Europe for a job that does not need them.

So we filter and measure what leaves with the water, and push for the law that lets clean water be used again.

Why we solve

Three problems, one habit: we accept what is left behind as the price of the job.

Every step made sense when it was designed. That does not make residue the price of hygiene.

A child eats no residue

Chlorate is not sprayed on — it forms when chlorine is used to clean, and stays on the produce. It blocks iodine uptake, so infant food carries the strictest limit of all: 0.01 mg/kg. Across the EU food chain, 8.1% of samples are over (EFSA, May 2025).

If nothing changes
The residue does not come from pesticides but from the sanitation itself, so it keeps arriving with every washed batch.
The sea takes less

Every wash cycle sends plastic fibres out with the water. They come back in the fish on the plate, and they do not leave the sea again.

If nothing changes
Nothing removes them later. Every year of delay is added permanently to the sea.
The region keeps its water

The Slovenian coast has summers when water is rationed. Water clean enough to drink runs into the sea while the taps are being watched.

If nothing changes
Every dry summer repeats, and the water that could have covered it is already gone.

Two of these we fix with a unit that also records the fix. The third needs a rule before anything can be recorded at all.

How we solve it

Three parts, one rule: remove the pollutant where it is made.

One line runs today, one is in demonstration, one is a rule that has to change
B Installed today
Water Technology Track Record

Shown as evidence, not a second product line: this is what Clera has designed, integrated, operated, monitored and validated in real water systems.

Why Every wash cycle sends plastic fibres and metals out with the water, and nothing removes them once they reach the sea. Facilities know this. What stops them is that catching it has never paid for itself — the filter costs money, the fibres cost money to handle, and nothing comes back. Discharge limits and reporting duties are tightening around exactly that.
What Microplastic and heavy metals from the water leaving a site — laundries and marinas today, and the same problem waits in hotels, hospitals, manufacturing and any place with a wash line. Held back where the water leaves, not chased afterwards.
How Membranes down to 0.1 µm hold the plastic back physically, with ozone keeping them clean instead of chemicals. Sensors read copper, zinc, chromium and lead as the water passes.
Impact 99.5 to 99.6% held back at Marina Izola, read by consortium laboratories. The treatment train is built to return 70% of the water to the process. SDG 6 and 14.
See measured results ↓
C Advocacy · not a product line
The part engineering cannot fix
Why The Slovenian coast has summers when water is rationed, while water that meets every standard runs into the sea. No membrane fixes that.
What The barrier between water that is already clean and the permit that would let it be reused. Regulation (EU) 2020/741 applies directly; the national implementing rules do not.
How We document the case at Marina Izola, collect signatures, and take it to the ministry together with the coastal municipalities.
Impact A route to a reuse permit where none exists, and a count of the compliant water still discharged while the rule is missing. SDG 6.
See the advocacy case ↓
Line B · installed
99.5%
Microplastic removal, Marina Izola · REMEDIES
Line B · installed
4
EU consortia we work in
LINE B
Water Technology Track Record · installed today

Catch what the water carries before it reaches the sea, and make the catching pay for itself.

Membranes hold the plastic back, sensors read the metals as they pass, software warns early. The same sensors that run the treatment are what produce the numbers an operator would otherwise have to commission and wait for — the measurement is not an extra step, it is how the unit works. Running today at our sites and in our EU projects.

Why this is shown: it demonstrates Clera's ability to design, integrate, operate, monitor and validate environmental technology in real-world water systems. Not every technology shown here is a standing Clera product for sale.

This line works on SDG 6 SDG 14
Microplastic capture — how a pass runs
installed today
Membrane module
0.1 µm
Pores to 0.1 µm · cleans itself with ozone
Water fit to reuse
70%
What the train is built to return
Plastic held back
99.5%
At Marina Izola, counted by consortium laboratories
Ultra-microfiltration
Designed to return 70% of the water to the process. What has been metered so far is lower, and the measurement is being tightened.
Heavy-metal sensing
Sensors measure copper, zinc, chromium and lead on site.
Advanced oxidation
For wastewater with a very high organic load, including work on breaking down PFAS.
Predictive data layer
Models warn about contamination a day or two ahead, and write the audit reports.
Counted
Samples before and after are read outside the company.
At source
Installed where the water leaves, before the sea, not after.
What is caught does not become waste
The fibres held back are collected and dried rather than flushed on, so what leaves the water can be used again instead of becoming a second disposal problem.
No cartridges
Nothing is consumed and thrown away to make the filtration work — the membranes are cleaned with ozone, not replaced.
Water that comes back
The recovered water is softer than the mains water it replaces — under 1 °dH against 10 to 25, dissolved solids under 20 mg/L against 200 to 600, and no chlorine. Measured on the laundry unit, March 2025.
LINE C
Advocacy · not a product line

Part of this is not a technical problem. It is a law that was never written.

At Marina Izola the water meets every standard and is thrown away. Regulation (EU) 2020/741 applies directly, but Slovenia has not adopted the national implementing rules it needs — permits and risk-management plans — so there is no route to a reuse permit. Here the proof is not the problem: the water is measured and it passes. There is simply nothing to prove it against. A region short of water loses it every day, and no membrane fixes that, so the petition stays open.

This strand works on SDG 6
Regulation (EU) 2020/741, without national implementing rules in Slovenia
Sign a petition
The circularity story

Nothing extra comes in. Nothing extra stays behind — except where the law still blocks it.

Line B Installed today
1 In Wash, process water 2 Filtered on site Cleaned with ozone 3 Out Caught, dried, reused 4 Closes Returns to the process
Line C Advocacy
1 In Water, already clean 2 Meets every standard Measured, and it passes 3 Out Discharged, not reused 4 Blocked No legal route yet
Loop closes today Engineering closed it — the law has not See what the petition asks for →
Why we solve it

The planet and the people using it come first, and the company is built so that this order cannot be reversed.

Nobody decided any of this, everybody got used to it. Removing it is the work, and reporting on it is not a substitute. So the reason survives growth and investors, it sits in the ownership documents.

By the end of 2026 the purpose will be written into the founding documents, so that changing it needs a large majority. An advisory board of users, demo hosts and research partners is committed and still to be constituted. The reinvestment policy is in drafting, against a standard of 51% of profit.

Impact and financial reporting start with the first full year of operation, with the method next to the number. A certification route is chosen and not yet certified. What is already in force: removal, life-cycle and water-quality numbers come from partner laboratories. Nothing here is called certified if it is not.

Where each stands
Measured by others
In force today
Mission lock
Into the founding documents by the end of 2026
Transparency
From the first full year, method beside number
Reinvestment policy
In drafting, against a standard of 51% of profit
Advisory board
Committed — users, demo hosts, research partners; not yet constituted
External validation
Route chosen, not yet certified

Published while it is still incomplete, because the order matters more than the state: the removal is in force and measured by others, and the structure around it is being built to match.

Where the framework meets the business

Four parts that already work, and where each one sits.

01
Society challenge

Residue in food and plastic in the sea, both made by processes nobody built to harm anyone.

Line B
02
Impact user

Demo hosts work with us: they set the problem, host the measurement and read the results with us.

Marina Izola · Fiume Veneto · Landau
03
Local impact

Towns on the Slovenian coast order the work. The company was built in Koper, not moved there.

Ankaran · Hrpelje-Kozina
04
Digitalisation

The data is an impact tool as much as a business tool.

Line B
Sustainable development goals

How we hold ourselves to them

SDG 6 · Clean water and sanitation
SDG 6 · Clean water and sanitation
SDG 14 · Life below water
SDG 14 · Life below water

Line B works on 6 and 14, Line C on 6. Each goal is tied to something we install, not to a promise: water clean enough to reuse, plastic stopped before the sea.

Icons are the official United Nations files, used per the SDG guidelines, and without the UN emblem, which is reserved for UN entities.

The content of this publication has not been approved by the United Nations and does not reflect the views of the United Nations or its officials or Member States. www.un.org/sustainabledevelopment

Measured, not promised

It already works. Here is where, and who measured it.

Two working sites and the laboratory that reads them. The numbers below are not ours.

The Koper demo site, on video

Filmed at Marina Izola for the REMEDIES consortium: the unit where the water leaves, the water going through it, and the people who run it. Two minutes, no commentary needed.

Marina Izola · Slovenia
Measured · independently validated
99.5–99.6%

Water from boat washing is cleaned to full compliance, with 99.5 to 99.6% of the microplastic held back before the sea. Measured by consortium laboratories under REMEDIES.

What this proves: Clera's ability to build and validate a real treatment system, independently checked.

Fiume Veneto · Italy
Metered
1,401 litres

Two days on an industrial laundry: ten wash cycles across three machines, 1,401 litres of wash water put through the unit. 42.2% of it was metered back to the machines, and more than that was recovered — the buffer tank still held treated water when the session stopped. The system is built to return 70% -- a target, not yet a measured figure. Microplastic samples from the raw inlet and the treated outlet went to Wasser 3.0 gGmbH in Landau; that count is not in yet.

What this proves: Clera's ability to run a live industrial deployment and meter its own performance honestly, including what has not been reached yet.

Landau · Germany
Independently validated
Independent count

Wasser 3.0 gGmbH, the consortium laboratory. The unit was shipped there after Italy, and the samples with it — the inlet and outlet fibre counts are read by them, not by us.

What this proves: results are checked by a laboratory outside Clera, not self-reported.

Line C · where law lags tech

The water at Marina Izola meets every standard and still goes to the sea.

Better engineering will not fix that one. It is a rule that was never written — the petition is open.

What the petition asks for →
Before you ask

Questions we get before the first call.

What does "measured, not promised" actually mean on this site?

Every result labelled measured was read by an independent party, not self-reported -- for example the 99.5 to 99.6% microplastic removal at Marina Izola, measured by consortium laboratories under REMEDIES. Results still in progress are labelled as targets, and the two are never presented as if they were the same thing.

Is the petition connected to a Clera product or service?

No. Line C is explicitly advocacy, not a product line. It exists because the water at Marina Izola already meets every legal standard and still cannot be reused, since Slovenia has not adopted the national implementing rules the EU's water-reuse regulation requires -- a gap in the law, not something engineering can fix.

Contact

We would like to hear what your water carries when it leaves the site.

Laundries, marinas, treatment plants and research groups. A first talk needs a site description and a water analysis, nothing more.

Clera d.o.o.
Ferrarska ulica 30, 6000 Koper, Slovenia
info@clera.one

Research collaboration or an EU consortium enquiry? Write to us directly at the same address.