Sectors & Industries IndustrialsPollution & Treatment Controls
Best Pollution & Treatment Control Stocks to Buy Now (2025)
Top pollution & treatment control stocks in 2025 ranked by overall Zen Rating. "A" Rated stocks have returned an average of +32.52% per year, and are the best pollution & treatment control stocks to buy now. Learn More.

Industry: Pollution & Treatment Con...

Overview Zen Rating Price Value Growth Financials Momentum Sentiment

Pollution & Treatment Controls is Zen Rated C and is the ranked industry out of 145 stock market industries

Ticker	Company	Market Cap	Shares	Institutional %	Insider %	Net Insider (L12M)	Net Insider (L3M)
ZWS	ZURN ELKAY WATER SOLUTIONS CORP	$5.69B	170,056,256	85.97%	14.03%	Net Selling	Net Selling
ERII	ENERGY RECOVERY INC	$885.33M	54,955,305	57.84%	42.16%	Net Selling	Net Selling
ATMU	ATMUS FILTRATION TECHNOLOGIES INC	$3.11B	82,866,170	99.37%	0.63%	Net Buying	Net Selling
CECO	CECO ENVIRONMENTAL CORP	$850.61M	34,989,986	49.12%	50.88%	Net Selling	Net Selling
VLTO	VERALTO CORP	$24.20B	247,550,644	93.25%	0.19%	Net Selling	Net Selling
FSS	FEDERAL SIGNAL CORP	$4.60B	61,097,074	92.07%	7.93%	Net Selling	Net Selling
ADUR	ADURO CLEAN TECHNOLOGIES INC	$150.47M	28,337,984	0.18%	0.00%
ARQ	ARQ INC	$196.63M	42,014,263	38.80%	46.43%	Net Buying	Net Selling
PCT	PURECYCLE TECHNOLOGIES INC	$1.39B	179,336,275	44.60%	55.40%	Net Buying	Net Buying
ZONE	CLEANCORE SOLUTIONS INC	$10.63M	8,369,749	2.05%	54.89%	Net Buying	Net Buying
CHNR	CHINA NATURAL RESOURCES INC	$5.73M	9,865,767	0.38%	8.51%
CLWT	EURO TECH HOLDINGS CO LTD	$9.65M	7,716,299	2.77%	0.00%
DEVS	DEVVSTREAM CORP	$9.66M	28,343,067	1.66%	44.75%
FTEK	FUEL TECH INC	$29.66M	30,708,273	18.62%	81.38%	Net Buying
LIQT	LIQTECH INTERNATIONAL INC	$13.70M	9,449,401	6.48%	93.52%	Net Selling	Net Selling
TOMZ	TOMI ENVIRONMENTAL SOLUTIONS INC	$18.19M	20,015,205	4.46%	15.70%	Net Buying
SCWO	374WATER INC	$45.28M	133,168,049	15.01%	56.63%	Net Buying	Net Buying
CLIR	CLEARSIGN TECHNOLOGIES CORP	$38.93M	50,234,407	6.69%	66.72%	Net Buying	Net Selling

Pollution & Treatment Control Stocks FAQ

What are the best pollution & treatment control stocks to buy right now in Mar 2025?

According to Zen Ratings, our proprietary rating system that evaluates 115 factors proven to drive growth in stocks and assigns each stock in our system an overall letter grade as well as 7 individual Component Grades for Value, Growth, Momentum, Sentiment, Safety, Financials, and proprietary AI algorithms, the 3 best pollution & treatment control stocks to buy right now are:

1. Zurn Elkay Water Solutions (NYSE:ZWS)

Zurn Elkay Water Solutions (NYSE:ZWS) is the #1 top pollution & treatment control stock out of 18 with a Zen Rating of B. Stocks with a rating of B have had an average return of +19.88% per year. Learn more.

The Component Grade breakdown for Zurn Elkay Water Solutions (NYSE:ZWS) is: Value: C, Growth: B, Momentum: C, Sentiment: B, Safety: C, Financials: B, and AI: C.

Zurn Elkay Water Solutions (NYSE:ZWS) has a Due Diligence Score of 42, which is 12 points higher than the pollution & treatment control industry average of 30.

ZWS passed 16 out of 38 due diligence checks and has strong fundamentals. Zurn Elkay Water Solutions has seen its stock return 1.73% over the past year, overperforming other pollution & treatment control stocks by 2 percentage points.

Zurn Elkay Water Solutions has an average 1 year price target of $38.75, an upside of 15.81% from Zurn Elkay Water Solutions's current stock price of $33.46.

Zurn Elkay Water Solutions stock has a consensus Hold recommendation according to Wall Street analysts. Of the 4 analysts covering Zurn Elkay Water Solutions, 0% have issued a Strong Buy rating, 25% have issued a Buy, 75% have issued a hold, while 0% have issued a Sell rating, and 0% have issued a Strong Sell.

2. Energy Recovery (NASDAQ:ERII)

Energy Recovery (NASDAQ:ERII) is the #2 top pollution & treatment control stock out of 18 with a Zen Rating of B. Stocks with a rating of B have had an average return of +19.88% per year. Learn more.

The Component Grade breakdown for Energy Recovery (NASDAQ:ERII) is: Value: C, Growth: C, Momentum: C, Sentiment: C, Safety: D, Financials: A, and AI: B.

Energy Recovery (NASDAQ:ERII) has a Due Diligence Score of 55, which is 25 points higher than the pollution & treatment control industry average of 30.

ERII passed 18 out of 33 due diligence checks and has strong fundamentals. Energy Recovery has seen its stock return 3.2% over the past year, overperforming other pollution & treatment control stocks by 4 percentage points.

Energy Recovery has an average 1 year price target of $20.67, an upside of 28.29% from Energy Recovery's current stock price of $16.11.

Energy Recovery stock has a consensus Strong Buy recommendation according to Wall Street analysts. Of the 3 analysts covering Energy Recovery, 66.67% have issued a Strong Buy rating, 33.33% have issued a Buy, 0% have issued a hold, while 0% have issued a Sell rating, and 0% have issued a Strong Sell.

3. Atmus Filtration Technologies (NYSE:ATMU)

Atmus Filtration Technologies (NYSE:ATMU) is the #3 top pollution & treatment control stock out of 18 with a Zen Rating of C. Stocks with a rating of C have had an average return of +7.53% per year. Learn more.

The Component Grade breakdown for Atmus Filtration Technologies (NYSE:ATMU) is: Value: C, Growth: C, Momentum: C, Sentiment: B, Safety: A, Financials: B, and AI: C.

Atmus Filtration Technologies (NYSE:ATMU) has a Due Diligence Score of 42, which is 12 points higher than the pollution & treatment control industry average of 30.

ATMU passed 17 out of 38 due diligence checks and has strong fundamentals. Atmus Filtration Technologies has seen its stock return 31.38% over the past year, overperforming other pollution & treatment control stocks by 32 percentage points.

Atmus Filtration Technologies has an average 1 year price target of $44.50, an upside of 18.64% from Atmus Filtration Technologies's current stock price of $37.51.

Atmus Filtration Technologies stock has a consensus Buy recommendation according to Wall Street analysts. Of the 4 analysts covering Atmus Filtration Technologies, 25% have issued a Strong Buy rating, 50% have issued a Buy, 25% have issued a hold, while 0% have issued a Sell rating, and 0% have issued a Strong Sell.

What are the pollution & treatment control stocks with highest dividends?

Out of 4 pollution & treatment control stocks that have issued dividends in the past year, the 3 pollution & treatment control stocks with the highest dividend yields are:

1. Euro Tech Holdings Co (NASDAQ:CLWT)

Euro Tech Holdings Co (NASDAQ:CLWT) has an annual dividend yield of 6.4%, which is 4 percentage points higher than the pollution & treatment control industry average of 2.05%.

Euro Tech Holdings Co's dividend payout ratio of 28.6% indicates that its high dividend yield is sustainable for the long-term.

2. Zurn Elkay Water Solutions (NYSE:ZWS)

Zurn Elkay Water Solutions (NYSE:ZWS) has an annual dividend yield of 1.02%, which is -1 percentage points lower than the pollution & treatment control industry average of 2.05%. Zurn Elkay Water Solutions's dividend payout is not stable, having dropped more than 10% one times in the last 10 years. Zurn Elkay Water Solutions's dividend has shown consistent growth over the last 10 years.

Zurn Elkay Water Solutions's dividend payout ratio of 35.5% indicates that its dividend yield is sustainable for the long-term.

3. Federal Signal (NYSE:FSS)

Federal Signal (NYSE:FSS) has an annual dividend yield of 0.66%, which is -1 percentage points lower than the pollution & treatment control industry average of 2.05%. Federal Signal's dividend payout is stable, having never dropped by more than 10% in the last 10 years. Federal Signal's dividend has shown consistent growth over the last 10 years.

Federal Signal's dividend payout ratio of 13.5% indicates that its dividend yield is sustainable for the long-term.

Why are pollution & treatment control stocks down?

Pollution & treatment control stocks were down -0.54% in the last day, and down -0.06% over the last week.

We couldn't find a catalyst for why pollution & treatment control stocks are down.

What are the most undervalued pollution & treatment control stocks?

Based on the Valuation rating, one of the 7 components of a stocks overall Zen Ratings grade, which evaluates factors including estimated earnings yield, earnings before interest and taxes/enterprise value, cash flow yield, free cash flow to price, and price-to-earnings growth (PEG ratio), the 3 most undervalued pollution & treatment control stocks right now are:

1. Ceco Environmental (NASDAQ:CECO)

Ceco Environmental (NASDAQ:CECO) is the most undervalued pollution & treatment control stock based on its Valuation Rating of C. Valuation is one of 7 Component Grades used to calculate the overall Zen Rating.

Ceco Environmental has a valuation score of 43, which is 23 points higher than the pollution & treatment control industry average of 20. It passed 3 out of 7 valuation due diligence checks.

Ceco Environmental's stock has gained 5.7% in the past year. It has overperformed other stocks in the pollution & treatment control industry by 6 percentage points.

2. Atmus Filtration Technologies (NYSE:ATMU)

Atmus Filtration Technologies (NYSE:ATMU) is the second most undervalued pollution & treatment control stock based on its Valuation Rating of C. Valuation is one of 7 Component Grades used to calculate the overall Zen Rating.

Atmus Filtration Technologies has a valuation score of 29, which is 9 points higher than the pollution & treatment control industry average of 20. It passed 2 out of 7 valuation due diligence checks.

Atmus Filtration Technologies's stock has gained 31.38% in the past year. It has overperformed other stocks in the pollution & treatment control industry by 32 percentage points.

3. Zurn Elkay Water Solutions (NYSE:ZWS)

Zurn Elkay Water Solutions (NYSE:ZWS) is the third most undervalued pollution & treatment control stock based on its Valuation Rating of C. Valuation is one of 7 Component Grades used to calculate the overall Zen Rating.

Zurn Elkay Water Solutions has a valuation score of 14, which is -6 points higher than the pollution & treatment control industry average of 20. It passed 1 out of 7 valuation due diligence checks.

Zurn Elkay Water Solutions's stock has gained 1.73% in the past year. It has overperformed other stocks in the pollution & treatment control industry by 2 percentage points.

Are pollution & treatment control stocks a good buy now?

50% of pollution & treatment control stocks rated by analysts are a buy right now. On average, analysts expect pollution & treatment control stocks to rise by 44.69% over the next year.

0% of pollution & treatment control stocks have a Zen Rating of A (Strong Buy), 22.22% of pollution & treatment control stocks are rated B (Buy), 44.44% are rated C (Hold), 11.11% are rated D (Sell), and 22.22% are rated F (Strong Sell).

What is the average p/e ratio of the pollution & treatment controls industry?

The average P/E ratio of the pollution & treatment controls industry is 27.5x.

WallStreetZen does not provide financial advice and does not issue recommendations or offers to buy stock or sell any security.

Information is provided 'as-is' and solely for informational purposes and is not advice. WallStreetZen does not bear any responsibility for any losses or damage that may occur as a result of reliance on this data.