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Osmosun SA (ALWTR) fair value: what the stock is really worth

As of Nov 10, 2026: fair value (intrinsic value) of Osmosun SA stock €0.74, price €0.94, that is 21.7% below the price, quality 32 out of 100. Rating: overvalued. The value is an estimate: none of our valuation models currently carries, it draws on revenue and assets compared with similar companies. Updated daily.

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Industrials FR · ISIN FR001400IUV6

OS Osmosun SA logo Thin data Nov 10, 2026

Osmosun SA

ALWTR · PA
Expensive, weak quality

Our calculation puts a fair price 22% below what the stock costs today.

Low debt
Revenue last quarter +46% vs. a year ago.
Fair value €0.7379 · Overvalued
Quality 32/100
Weak Growth (revenue 3y −26.7 %/yr in EUR)
Loss-making · -87.5% net margin (TTM)
Negative free cash flow
Trails peers (3/10)
Narrow moat 10/100 · thin data
Thin data
Estimate⚠ Small free float
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26 valuation models 8 families, DCF to NCAV 37 quality factors margins, balance sheet, cashflow, debt 6 AI factors moat, what no ratio measures 2,000+ data points verified, per stock, median

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Price vs Fair Value

€12.10 €0.5060 Fair Value €0.7379 Jul 2023 Nov 2026

White line = price, green steps = our fair value per fiscal year. As of Nov 10, 2026.

How to read this chart

40‑month range €0.5060 – €12.10 · fair‑value band €0.5534 – €0.9223 · the €0.9420 price screens above the €0.7379 fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). As of Nov 10, 2026.

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Company profile

Watera provides water treatment solutions with the use of renewable energy in France.

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The company offers OSMOSUN that provides sea and brackish water, reverse osmosis desalination units; OSMO-WATT, a containerized solar powered solution for seawater and brackish water desalination; OSMOSUN TAPS, an integrated drinking water production solution for remote areas; and OSMOSUN NOMAD, a water treatment unit.

The company also operates in the low-carbon water market and develops and sells patented, clean, and sustainable solutions for solar-powered, battery-free seawater and brackish water desalination.

It serves remote communities, municipal, emergency situations, agriculture, hotels, base camps, and industrial activities, and mining industries. The company was formerly known as Osmosun S.A. and changed its name to Watera in March 2026.

Watera was incorporated in 2014 and is based in Gellainville, France.

Stock analysis

Osmosun SA (ALWTR) currently trades at €0.9420, while our estimate is €0.7379, 22% below the price, so the stock looks overvalued today.

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Valuation

None of our valuation models currently carries for this company, usually because of losses or heavy investment. The estimate draws on revenue and assets compared with similar companies and is less precise than a model-based fair value.

Scenario range: €0.5534 (bear) to €0.9223 (bull), the price of €0.9420 sits above it. Bear and bull are the same models on cautious and optimistic assumptions, a range, not a price target.

Quality & growth

The Quality Score stands at 32/100 (below-average quality), in the Industrials sector.

Weak Growth: Revenue is shrinking: the last year, the last three and the last five years are all negative.

Osmosun SA reported revenue of €1.8M in FY2025 versus €2.0M in FY2021, a compound −2.6%/yr. Reported net income was −€2.2M in FY2025.

Key figures

Market cap €16.6M Micro · P/S ratio 7.54 · EPS (TTM) €0.0900 · Net margin −120% · Return on equity −68.7% · Return on assets (EBIT) −39.3% (5-year average) · Operating margin −72.0% · Revenue (TTM) €2.2M.

Competitive moat

Our AI-assisted moat analysis scores the competitive advantage at 10 out of 100 (low confidence).

What moves the price

The share trades about 68% below its 52-week high and 86% above its 52-week low, currently below its 200-day average.

For context, the median of 10 Industrials peers we cover trades at 4% fair-value upside, at −22%, ALWTR screens richer than that median.

Fair Value

Bear €0.5534 Fair Value €0.7379 Bull €0.9223
Price €0.9420 · Downside -21.7%
Estimate. None of our valuation models currently carries for this company, usually because of losses or heavy investment. The estimate draws on revenue and assets compared with similar companies and is less precise than a model-based fair value.

Quality Score breakdown

Overall quality 32/100

It rates the business: profits, how they develop, real cash, balance sheet, investing and share count.

Profitability 1
How much profit the company makes from its sales and capital
Quality Growth 41
Are margins and returns getting better?
Cashflow 6
Do the profits arrive as real cash?
Financial strength 76
Debt, balance sheet and risk of trouble
Investment 33
Does it invest with discipline instead of growing at any price?
Low Volatility 50
How calm the share price moves, does not count
Price momentum 23
Price momentum of the last 3 to 12 months, does not count
Near the 52-week high 38
Distance to the 52-week high, does not count
New shares 40
Buys back shares or issues new ones?

Open the full quality analysis →

Revenue & earnings trend

Growth Quality ⓘGrowth is valuable only when reinvestment earns attractive returns (Aswath Damodaran): sustainable growth depends on return on capital, reinvestment and efficiency. Basis: total company revenue over the periods shown on the cards (3Y/5Y/all years), not per share, so a merger can show up as a growth jump; per-share earnings growth is in the value-creation card. 0/100
Revenue is shrinking: the last year, the last three and the last five years are all negative.
Revenue growth 1 year
−3.5%
Revenue growth 3 years ⓘMeasures the company's TOTAL revenue from reported annual statements: compound average growth per year (CAGR) from the fiscal year 3, 5 or N years back to the most recent comparable fiscal year. Not per share: buybacks do not change this number, and a merger can appear as a growth jump. Per-share growth (which does include buybacks) is in the value-creation card.
−26.7%
Profit margin (trend) ⓘOperating margin then vs now, from reported annual statements. A falling margin after a boom year is the classic peak-earnings signal: the growth rate then leans on an inflated base.
−45.1% (2021) → −133.9% (2025)
What shareholders gained per year ⓘWe only publish this rate when it is defensible. Reason: fiscal 2025 is a loss year, no rate is defined from a loss
not computed

ALWTR screens overvalued: fair value 22% below the price. Compare with Veralto Corporation →

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Peer GroupⓘHow this stock ranks against its industry: the green marker is this stock, the band is the typical 25–75% peer range, and the tick is the median.Pollution & Treatment Controls · 101 stocks

Beats the industry median on 3/9 measures
Overall it trails its industry peers.
Valuation
Quality Score 32 · Bottom 25%
Fair Value upside −21.7% · Above median
Profitability
Return on assets −21.5% · Bottom 25%
Net margin (12 months) −87.5% · Bottom 25%
Operating margin (12 months) −72.0% · Bottom 25%
Growth and dividend
Revenue growth (quarter YoY) 46.4% · Top 25%
Balance sheet
Debt / equity 0.05× · Below median

Valuation Multiplesvs Pollution & Treatment Controls median · lower = cheaper

P/B 2.18× · Pricier than median
P/S (12 months) 7.65× · Priciest 25%

Strength profile in five axes (Snowflake)

VALUEFUTUREPASTHEALTHDIVIDEND
This stock
VALUEFUTUREPASTHEALTHDIVIDEND
Sector peers
VALUE (fair-value potential)4 · sector 4
FUTURE (revenue growth)100 · sector 25
PAST (return on equity)0 · sector 10
HEALTH (low debt)97 · sector 93
DIVIDEND (yield)0 · sector 37

Context: sector, industry, market

Values & ESG

Does this company touch areas you may want to avoid? The classification is inferred from sector and industry.

None of the checked exposures detected

Similar stocks

10 more Pollution & Treatment Controls stocks, each showing price versus our Fair Value estimate.

Stock Price Fair Value vs Fair Value Compare
China Conch Venture Holdings 0586 HK$7.90 HK$23.70 +200% vs ALWTR
Jingjin Equipment Inc 603279 ¥13.66 ¥19.11 +40% vs ALWTR
Zurn Elkay Water Solutions Corporation ZWS $45.48 $48.24 +6% vs ALWTR
Mega Union Technology Inc 6944 629.00 TWD 663.94 TWD +6% vs ALWTR
Zhongyuan Environmental Protection Co 000544 ¥7.11 ¥7.36 +4% vs ALWTR
Fujian Longking Co 600388 ¥17.05 ¥12.37 −27% vs ALWTR
Veralto Corporation VLTO $118.21 $69.81 −41% vs ALWTR
Munters Group MTRS kr 133.80 kr 48.58 −64% vs ALWTR
GVS S.p.A GVS €6.10 €1.74 −71% vs ALWTR
CECO Environmental Corp CECO $51.83 $10.47 −80% vs ALWTR

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Osmosun SA: fair value per Fair Value Calculator

Cite: Fair Value Calculator (2026). "Osmosun SA Fair Value". https://www.fairvalue-calculator.com/stock/ALWTR

Frequently asked questions

Is Osmosun SA (ALWTR) overvalued or undervalued?
As of Nov 10, 2026, our estimate of fair value is €0.7379 versus a price of €0.9420, about 22% lower (overvalued).
What is the fair value of ALWTR?
Our estimate for Osmosun SA is €0.7379 (as of Nov 10, 2026), built from audited fundamentals. The current price: €0.9420.
What is the quality score of ALWTR?
Osmosun SA has a Quality Score of 32/100. It measures business quality (profitability, growth, cash flow, balance-sheet strength, investment discipline, share issuance). Market factors such as price momentum and volatility do not enter the number; they are shown separately in the detail view.
What is the price target for Osmosun SA (ALWTR)?
Our calculated price target is the estimate of €0.7379 (as of Nov 10, 2026). Cautious scenario €0.5534, optimistic scenario €0.9223. It is an estimate from revenue and assets compared with similar companies, because none of our valuation models currently carries, not an analyst target.
What is the Osmosun SA stock forecast for 2026?
Our estimate puts fair value at €0.7379, about 22% lower versus a price of €0.9420 (overvalued). Cautious scenario €0.5534, optimistic scenario €0.9223. The calculation is refreshed regularly with new filings.
What is the revenue of Osmosun SA (ALWTR)?
Osmosun SA reported trailing-twelve-month revenue of about €2.2M (latest available figure, as of Nov 10, 2026).
What is the intrinsic value of Osmosun SA (ALWTR)?
Intrinsic value and fair value mean the same thing: what the business is worth on its numbers, independent of the share price. For Osmosun SA it is €0.7379 per share (as of Nov 10, 2026), against a price of €0.9420.
Is Osmosun SA stock overvalued or undervalued in 2026?
As of Nov 10, 2026, ALWTR trades above its calculated fair value: price €0.9420, fair value €0.7379, a gap of about −22% (overvalued). The calculation is refreshed with each new quarterly report, so the verdict can change during the year.
Is fair value the same as the market price of ALWTR?
No. The price is what the market pays today (€0.9420); the fair value is what the company's own numbers justify (€0.7379). For Osmosun SA the two are €0.2041 per share apart. That gap is exactly why we show both numbers side by side.
How much is Osmosun SA worth?
The market values Osmosun SA at about €16.6M (market capitalisation, as of Nov 10, 2026). Per share that is €0.9420; our models calculate a fair value of €0.7379 per share.
What do the bullish and bearish scenarios say about ALWTR?
Our models span a range for Osmosun SA: cautious scenario €0.5534, base €0.7379, optimistic €0.9223 per share (as of Nov 10, 2026, price €0.9420). The range comes from different growth and margin assumptions, not from analyst opinions.
How solid is the balance sheet of Osmosun SA (ALWTR)?
Balance-sheet figures for Osmosun SA (as of Nov 10, 2026): return on equity −68.7%, debt of 0.05 per unit of equity. They feed the Quality Score of 32/100, which measures business quality independently of the share price.
How far is ALWTR from its 52-week high?
Osmosun SA trades at €0.9420, about 68% below its 52-week high of €2.92 and 86% above the low of €0.5060 (as of Nov 10, 2026). Distance from the high says nothing about value: that is what the fair value of €0.7379 is for.
Which stocks are comparable to Osmosun SA?
From the same area (Industrials) we also value Veralto Corporation, Zurn Elkay Water Solutions Corporation, Fujian Longking Co, Munters Group, among others. Each of them has its own fair-value calculation on this site using the same models, so the comparison is like for like.
Is Osmosun SA stock attractive at the current price?
The data as of Nov 10, 2026: price €0.9420, calculated fair value €0.7379 (−22%), Quality Score 32/100. Whether that fits your horizon and risk tolerance is your call. We provide the calculation, not investment advice.
Is it still worth investing in stocks now?
The global stock market currently sits 15.1% above its aggregate fair value. Osmosun SA itself currently trades above fair value. An expensive market is no reason to stay out and no reason to buy everything at once: keep a broad savings plan running, buy single stocks only with money you can do without, and hold part of your money liquid while the market is high. The full picture including sectors is on is it worth investing now.
What is the share price of Osmosun SA (ALWTR)?
The closing price on Nov 10, 2026 was €0.9420. Our estimate is €0.7379, about 22% lower (overvalued). We carry closing prices from our data provider, not a live tick.
What should I pay attention to with Osmosun SA right now?
The price sits above even our optimistic bull case (€0.9223). The favourable scenario is already priced in. Weak quality (32/100) and above fair value at the same time, the margin of safety is missing on both counts. Evidence is limited here (fewer models, shorter history), so the fair value is a rougher estimate than usual.

Key figures of Osmosun SA

How large is the market capitalisation of Osmosun SA (ALWTR)?
The market capitalisation of Osmosun SA is €16.6M. The stock-market value of the whole company: share price times number of shares. It is what the market asks for the entire business today.
What is the P/S ratio of Osmosun SA (ALWTR)?
The price-to-sales ratio of Osmosun SA is 7.54 (last twelve months). Price to sales: market value relative to yearly revenue. Useful when profit is thin or distorted.
What are the earnings per share of Osmosun SA (ALWTR)?
Earnings per share at Osmosun SA are €0.0900. Earnings per share over the last twelve months: total profit spread across every single share.
What is the net margin of Osmosun SA (ALWTR)?
The net margin of Osmosun SA is −120% (fiscal year 2025). How much of every unit of revenue ends up as profit. 10% means 10 cents of profit per dollar of sales.
What is the return on equity of Osmosun SA (ALWTR)?
The return on equity (ROE) of Osmosun SA is −68.7% (last twelve months). Profit relative to shareholders' equity, how efficiently the company works with its owners' money.
What is the EBIT return on assets of Osmosun SA (ALWTR)?
On an EBIT basis the return on assets of Osmosun SA is −39.3% (avg 5y). Operating profit (EBIT) relative to everything the company owns, as a multi-year average. It describes the business model rather than one good or bad year.
What is the operating margin of Osmosun SA (ALWTR)?
The operating margin of Osmosun SA is −72.0% (last twelve months). Profit from the core business (before interest and taxes) relative to revenue.
How fast is revenue growing at Osmosun SA (ALWTR)?
Revenue at Osmosun SA is growing +46.4% versus a year earlier (3y avg −26.7%). How much revenue grew versus a year earlier (YoY). The 3-year average next to it puts the single year in context.
How much free cash flow does Osmosun SA (ALWTR) generate?
The free cash flow of Osmosun SA is −€1.7M (fiscal year 2025). The cash truly left after running and investing in the business, this is what pays dividends and buybacks.
How much net debt does Osmosun SA (ALWTR) carry?
The net debt of Osmosun SA is €653K (fiscal year 2025). Debt minus cash on hand. The note shows how many years of free cash flow could in theory pay it off.
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