The BalancedInvestor Club

Pollution Treatment Controls Industry Analysis

21 companies analyzed • Returns from -139.6% to +191.2%

Company List (21 Results)

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Industry Performance

(21/21 companies)
2025-06-18 → 2026-06-16
Weighted Avg
-5.0%
Best
+191.2%
Worst
-139.6%
Returns Distribution
Top 5
1. CLIR+191.2%2. SCWO+170.7%3. BCHT+139.7%4. CECO+114.8%5. RAINW+76.0%
Bottom 5
1. ZONE-139.6%2. PCTTW-74.1%3. ARQ-58.7%4. PCT-51.4%5. PCTTU-50.9%

CLIR

+191.2%

ClearSign Combustion Corporation

SCWO

+170.7%

374Water Inc. Common Stock

BCHT

+139.7%

Birchtech Corp

CECO

+114.8%

CECO Environmental Corp.

RAINW

+76.0%

Rain Enhancement Technologies Holdco, Inc. Warrants

ADUR

+38.1%

Aduro Clean Technologies Inc

ZWS

+33.2%

Zurn Elkay Water Solutions Corporation

FSS

+9.8%

Federal Signal Corporation

CLWT

+6.4%

Euro Tech Holdings Company Ltd

CHNR

-4.0%

China Natural Resources Inc

VLTO

-14.4%

Veralto Corporation

ERII

-35.0%

Energy Recovery Inc

FTEK

-39.8%

Fuel Tech Inc

TOMZ

-42.3%

TOMI Environmental Solutions Inc

DEVS

-45.0%

DevvStream Corp. Common Stock

LIQT

-50.6%

LiqTech International Inc

PCTTU

-50.9%

Purecycle Technologies Holdings Corp Unit

PCT

-51.4%

Purecycle Technologies Holdings Corp

ARQ

-58.7%

Arq Inc

PCTTW

-74.1%

PureCycle Technologies Inc

1–20 of 21
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Methodology

The Weighted Average return (-5.0%) is calculated using market capitalization as weights. This gives larger companies more influence on the average, providing a more market-representative view.

19 companies with market cap data included: CLIR, SCWO, BCHT, CECO, ADUR, ZWS, FSS, CLWT, CHNR, VLTO and 9 more...

We're educators, not advisors. We don't make buy or sell recommendations under any circumstance. All content is for educational purposes. Past performance doesn't guarantee future results. Your decisions are your own. Disclaimer