Market overview
The global sewage treatment plant market is worth USD 44.5 bn in 2026 and is forecast to reach USD 78.2 bn by 2036, growing at a 5.8% CAGR. China is the largest country market and Tertiary and advanced is the largest by treatment stage segment.
| Scope | Municipal sewage treatment plants: design, equipment, construction and commissioning of primary, secondary and tertiary treatment facilities sold to cities and water utilities. |
|---|---|
| Industry | Services and Utilities |
| Value 2025 | USD 42.0 bn |
| Value 2026 | USD 44.5 bn |
| Value 2036 | USD 78.2 bn |
| CAGR 2026-2036 | 5.8% |
| Volume 2026 | 14,549 installations |
| Volume 2036 | 20,974 installations |
| Average price 2026 | USD 3,060,000 per installation |
| Report price | Starts from USD 1,999 |
| Published | November 2026 |
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Sewage Treatment Plant market size and forecast, 2026-2036
Source: Compare Market Research analysis.
© 2026 Compare Market Research. All rights reserved.
| Year | Market value |
|---|---|
| 2026 | USD 44.5 bn |
| 2027 | USD 47.1 bn |
| 2028 | USD 49.8 bn |
| 2029 | USD 52.7 bn |
| 2030 | USD 55.8 bn |
| 2031 | USD 59.0 bn |
| 2032 | USD 62.4 bn |
| 2033 | USD 66.1 bn |
| 2034 | USD 69.9 bn |
| 2035 | USD 73.9 bn |
| 2036 | USD 78.2 bn |
Sewage Treatment Plant market segmentation
By treatment stage
Source: Compare Market Research analysis.
© 2026 Compare Market Research. All rights reserved.
| Segment | Share 2026 | Share 2036 | Value 2026 | CAGR 2026-36 |
|---|---|---|---|---|
| Primary | 12.0% | 9.4% | USD 5.3 bn | 3.2% |
| Secondary | 42.0% | 38.0% | USD 18.7 bn | 4.7% |
| Tertiary and advanced | 46.0% | 52.6% | USD 20.5 bn | 7.2% |
By technology
Source: Compare Market Research analysis.
© 2026 Compare Market Research. All rights reserved.
| Segment | Share 2026 | Share 2036 | Value 2026 | CAGR 2026-36 |
|---|---|---|---|---|
| Activated sludge | 44.0% | 38.1% | USD 19.6 bn | 4.3% |
| Membrane bioreactor | 20.0% | 26.4% | USD 8.9 bn | 8.8% |
| Sequencing batch reactor | 14.0% | 13.3% | USD 6.2 bn | 5.3% |
| Moving bed biofilm reactor | 12.0% | 13.2% | USD 5.3 bn | 6.8% |
| Other technologies | 10.0% | 9.1% | USD 4.5 bn | 4.8% |
By plant size
| Segment | Share 2026 | Share 2036 | Value 2026 | CAGR 2026-36 |
|---|---|---|---|---|
| Small (under 10,000 m3/day) | 32.0% | 32.6% | USD 14.2 bn | 6.0% |
| Medium | 38.0% | 36.9% | USD 16.9 bn | 5.5% |
| Large (over 100,000 m3/day) | 30.0% | 30.5% | USD 13.4 bn | 6.0% |
By end user
| Segment | Share 2026 | Share 2036 | Value 2026 | CAGR 2026-36 |
|---|---|---|---|---|
| Municipal | 68.0% | 66.0% | USD 30.3 bn | 5.5% |
| Industrial | 24.0% | 25.0% | USD 10.7 bn | 6.2% |
| Commercial and residential complexes | 8.0% | 9.0% | USD 3.6 bn | 7.0% |
By project phase
| Segment | Share 2026 | Share 2036 | Value 2026 | CAGR 2026-36 |
|---|---|---|---|---|
| New plants | 48.0% | 44.0% | USD 21.4 bn | 4.9% |
| Upgrades and retrofits | 30.0% | 32.0% | USD 13.4 bn | 6.5% |
| Operation and maintenance | 22.0% | 24.0% | USD 9.8 bn | 6.7% |
Top 25 countries for sewage treatment plant by revenue
Countries are ranked by revenue earned from sales in the country, not by where the product is made. The ten largest hold 78.0% of 2026 revenue and the 25 countries below together hold 94.3%.
Source: Compare Market Research analysis.
© 2026 Compare Market Research. All rights reserved.
| # | Country | Value 2026 | Share 2026 | Value 2036 | CAGR 2026-36 |
|---|---|---|---|---|---|
| 1 | China | USD 12.0 bn | 27.0% | USD 21.9 bn | 6.2% |
| 2 | United States | USD 7.6 bn | 17.0% | USD 11.4 bn | 4.2% |
| 3 | India | USD 4.0 bn | 9.0% | USD 9.6 bn | 9.2% |
| 4 | Japan | USD 2.2 bn | 5.0% | USD 3.1 bn | 3.2% |
| 5 | Germany | USD 1.8 bn | 4.0% | USD 2.4 bn | 3.1% |
| 6 | Saudi Arabia | USD 1.6 bn | 3.5% | USD 3.3 bn | 7.8% |
| 7 | Brazil | USD 1.6 bn | 3.5% | USD 3.0 bn | 6.7% |
| 8 | United Kingdom | USD 1.3 bn | 3.0% | USD 2.0 bn | 4.3% |
| 9 | France | USD 1.3 bn | 3.0% | USD 1.8 bn | 3.0% |
| 10 | Indonesia | USD 1.3 bn | 3.0% | USD 3.0 bn | 8.3% |
| 11 | South Korea | USD 1.2 bn | 2.7% | USD 2.0 bn | 5.0% |
| 12 | Italy | USD 833 mn | 1.9% | USD 1.4 bn | 5.0% |
| 13 | Spain | USD 668 mn | 1.5% | USD 1.1 bn | 5.1% |
| 14 | Mexico | USD 570 mn | 1.3% | USD 1.0 bn | 6.0% |
| 15 | Turkey | USD 503 mn | 1.1% | USD 908 mn | 6.1% |
| 16 | Egypt | USD 454 mn | 1.0% | USD 821 mn | 6.1% |
| 17 | Australia | USD 418 mn | 0.9% | USD 688 mn | 5.1% |
| 18 | Canada | USD 387 mn | 0.9% | USD 634 mn | 5.0% |
| 19 | Russia | USD 365 mn | 0.8% | USD 595 mn | 5.0% |
| 20 | Thailand | USD 343 mn | 0.8% | USD 618 mn | 6.1% |
| 21 | Vietnam | USD 325 mn | 0.7% | USD 642 mn | 7.0% |
| 22 | Poland | USD 312 mn | 0.7% | USD 509 mn | 5.0% |
| 23 | Malaysia | USD 298 mn | 0.7% | USD 540 mn | 6.1% |
| 24 | Netherlands | USD 285 mn | 0.6% | USD 469 mn | 5.1% |
| 25 | Pakistan | USD 276 mn | 0.6% | USD 501 mn | 6.1% |
| Rest of world | USD 2.5 bn | 5.7% | USD 4.3 bn | 5.5% |
Source: Compare Market Research analysis.
© 2026 Compare Market Research. All rights reserved.
Competitive landscape
Group 1: Global leaders
- Veolia
- SUEZ
- Xylem
- Acciona
- Kurita Water Industries
- Jacobs
- Black & Veatch
Group 2: Regional and specialist players
- VA Tech Wabag
- Ovivo
- Alfa Laval
- Aquatech
- Hitachi Zosen
- Metito
- Sulzer
- Kubota
- Thermax
- Ion Exchange
Group 3: Emerging and niche players
- Fluence Corporation
- Aqua-Aerobic Systems
- Organica Water
- Paques
- Nijhuis Saur Industries
- Anua International
- Orenco Systems
- Smith & Loveless
Research methodology
Every figure on this page comes from the research framework that we apply to all of the markets we cover. The 2025 base for the sewage treatment plant market is built from the volume sold and the price that buyers pay, and is cross-checked against the size of the wider industry the market belongs to. Where a market can be sized in more than one way, the routes are compared before a figure is set.
The forecast runs year by year from the 2025 base to 2036. Growth in each year reflects demand from the industries that buy the product, adoption of new technology, pricing, regulation and replacement cycles. Volume and price are modelled together, so revenue in each year equals volume multiplied by average price. The 2026 to 2036 compound annual growth rate of 5.8% is calculated from the resulting values.
The market is divided by treatment stage, by technology, by plant size, by end user, by project phase. The 25 largest countries are ranked by revenue earned from sales to buyers in each country, not by where the product is made. Segment values and country values add up to the market total in every year, and every report is checked for consistency before it is published.
Companies are placed in three groups: global leaders, regional and specialist players, and emerging and niche players. The groups describe how companies compete in the market. They are not a ranking and they are not market shares.
Our analysts also carry out primary research. Customized reports add interviews with key opinion leaders, such as senior executives, technical specialists and buyers, to test the assumptions behind the numbers for the question being asked.
Frequently asked questions
How big is the sewage treatment plant market?
The global sewage treatment plant market is estimated at USD 42.0 bn in 2025 and USD 44.5 bn in 2026.
How fast will the sewage treatment plant market grow?
It is forecast to reach USD 78.2 bn by 2036, a compound annual growth rate of 5.8% from 2026, an increase of USD 33.7 bn.
Which country is the largest market for sewage treatment plant?
China is the largest market by revenue at USD 12.0 bn in 2026, 27.0% of the global total. The three largest countries together hold 53.0%.
Which country is growing fastest?
Among the ten largest markets, India is growing fastest at 9.2% a year from 2026 to 2036.
Which sewage treatment plant segment is largest?
In the by treatment stage split, Tertiary and advanced is the largest segment with 46.0% of 2026 revenue.
Who are the leading sewage treatment plant companies?
Global leaders include Veolia, SUEZ, Xylem, Acciona.
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