We are live on ! Find out more

Pollution & Treatment Controls
Stocks Ranked by
Market Capitalization

Name Market cap Price Price
change %
VLTO icon
1
Veralto
VLTO
$23.2B
$23.2B $94.28 2.46%
ZWS icon
2
Zurn Elkay Water Solutions
ZWS
$8.14B
$8.14B $48.77 0.81%
CECO icon
3
Ceco Environmental
CECO
$4.31B
$4.31B $73.77 2.46%
PCT icon
4
PureCycle Technologies
PCT
$1.2B
$1.2B $5.98 2.22%
ADUR
5
Aduro Clean Technologies
ADUR
$476M
$476M $13.43 4.03%
ERII icon
6
Energy Recovery
ERII
$439M
$439M $8.52 1.19%
ARQ icon
7
Arq
ARQ
$85.4M
$85.4M $1.99 1.97%
FTEK icon
8
Fuel Tech
FTEK
$47.4M
$47.4M $1.52 1.94%
SCWO icon
9
374Water
SCWO
$38.5M
$38.5M $2.20 1.85%
CLIR icon
10
ClearSign Technologies
CLIR
$25.1M
$25.1M $3.98 14%
LIQT icon
11
LiqTech
LIQT
$22.4M
$22.4M $0.6799 4.31%
RAIN
12
Rain Enhancement Technologies
RAIN
$13.5M
$13.5M $1.30 11%
TOMZ icon
13
TOMI Environmental Solutions
TOMZ
$12.9M
$12.9M $1.67 8.44%
CLWT icon
14
Euro Tech Holdings
CLWT
$11.7M
$11.7M $1.58 0.64%

Pollution & Treatment Controls Stocks at a Glance

Pollution and treatment control companies build filtration, emissions-control, waste-treatment, and recycling equipment. Environmental regulation drives demand — tightening standards create replacement and upgrade cycles largely independent of the economy.

There are 14 Pollution & Treatment Controls industry stocks tracked by Wall St. Rank, worth a combined $38B.

The largest by market cap are Veralto (VLTO) at $23.2B, Zurn Elkay Water Solutions (ZWS) at $8.14B and Ceco Environmental (CECO) at $4.31B.

Among institutional investors, Zurn Elkay Water Solutions (ZWS) drew the most net new fund positions in Q1 2026: 75 funds opened new positions, taking total fund holders up 34 (8.8%) quarter-over-quarter.

Market caps and prices updated daily; fund activity based on aggregated SEC 13F filings for Q1 2026.