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 62nd 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	$6.28B	168,252,266	85.95%	14.05%	Net Selling	Net Selling
FTEK	FUEL TECH INC	$76.94M	30,777,433	18.08%	81.92%	Net Buying	Net Selling
ATMU	ATMUS FILTRATION TECHNOLOGIES INC	$3.11B	82,663,925	99.24%	0.76%	Net Buying
VLTO	VERALTO CORP	$25.52B	247,861,167	91.87%	0.18%	Net Selling	Net Selling
CECO	CECO ENVIRONMENTAL CORP	$1.13B	35,267,942	48.95%	51.05%	Net Selling	Net Selling
FSS	FEDERAL SIGNAL CORP	$6.53B	60,968,839	92.13%	7.87%	Net Selling	Net Selling
ARQ	ARQ INC	$248.62M	42,211,120	39.06%	48.05%	Net Buying	Net Buying
ERII	ENERGY RECOVERY INC	$743.91M	54,499,225	57.70%	42.30%	Net Selling	Net Selling
PCT	PURECYCLE TECHNOLOGIES INC	$2.96B	179,559,510	46.31%	53.69%	Net Buying	Net Selling
ADUR	ADURO CLEAN TECHNOLOGIES INC	$344.03M	28,909,708	0.18%	0.00%
ZONE	CLEANCORE SOLUTIONS INC	$29.09M	8,480,037	2.45%	75.35%	Net Buying	Net Buying
CHNR	CHINA NATURAL RESOURCES INC	$4.04M	1,047,237	4.09%	80.21%
CLWT	EURO TECH HOLDINGS CO LTD	$9.92M	7,716,299	3.45%	0.00%
DEVS	DEVVSTREAM CORP	$12.38M	33,461,734	1.27%	37.91%
LIQT	LIQTECH INTERNATIONAL INC	$17.98M	9,614,043	6.35%	93.65%	Net Selling
TOMZ	TOMI ENVIRONMENTAL SOLUTIONS INC	$19.23M	20,015,205	5.09%	16.00%	Net Buying	Net Buying
SCWO	374WATER INC	$33.28M	144,682,963	13.40%	52.47%	Net Selling	Net Selling
CLIR	CLEARSIGN TECHNOLOGIES CORP	$28.31M	52,422,532	7.83%	81.10%	Net Selling

Pollution & Treatment Control Stocks FAQ

What are the best pollution & treatment control stocks to buy right now in Jul 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: C, Momentum: C, Sentiment: C, Safety: B, Financials: B, and AI: C.

Zurn Elkay Water Solutions (NYSE:ZWS) has a Due Diligence Score of 38, which is 9 points higher than the pollution & treatment control industry average of 29.

ZWS passed 14 out of 38 due diligence checks and has average fundamentals. Zurn Elkay Water Solutions has seen its stock return 18.7% over the past year, overperforming other pollution & treatment control stocks by 10 percentage points.

Zurn Elkay Water Solutions has an average 1 year price target of $37.33, an upside of 0.01% from Zurn Elkay Water Solutions's current stock price of $37.33.

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

2. Fuel Tech (NASDAQ:FTEK)

Fuel Tech (NASDAQ:FTEK) is the #2 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 Fuel Tech (NASDAQ:FTEK) is: Value: C, Growth: B, Momentum: B, Sentiment: C, Safety: C, Financials: C, and AI: D.

Fuel Tech (NASDAQ:FTEK) has a Due Diligence Score of 33, which is 4 points higher than the pollution & treatment control industry average of 29.

FTEK passed 10 out of 33 due diligence checks and has average fundamentals. Fuel Tech has seen its stock return 133.64% over the past year, overperforming other pollution & treatment control stocks by 125 percentage points.

Fuel Tech has an average 1 year price target of $4.00, an upside of 60% from Fuel Tech's current stock price of $2.50.

Fuel Tech stock has a consensus Buy recommendation according to Wall Street analysts. Of the 1 analyst covering Fuel Tech, 0% have issued a Strong Buy rating, 100% 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: D, Momentum: C, Sentiment: B, Safety: B, Financials: A, and AI: B.

Atmus Filtration Technologies (NYSE:ATMU) has a Due Diligence Score of 39, which is 10 points higher than the pollution & treatment control industry average of 29.

ATMU passed 15 out of 38 due diligence checks and has average fundamentals. Atmus Filtration Technologies has seen its stock return 23.73% over the past year, overperforming other pollution & treatment control stocks by 15 percentage points.

Atmus Filtration Technologies has an average 1 year price target of $41.00, an upside of 8.9% from Atmus Filtration Technologies's current stock price of $37.65.

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, 25% have issued a Buy, 50% 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 5 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 N/A, which is N/A percentage points lower than the pollution & treatment control industry average of 0.45%.

Euro Tech Holdings Co's dividend payout ratio of 80% indicates that its 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 0.94%, which is the same as the pollution & treatment control industry average of 0.45%. 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 34.3% 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 0.49%, which is the same as the pollution & treatment control industry average of 0.45%. 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 14.5% indicates that its dividend yield is sustainable for the long-term.

Why are pollution & treatment control stocks up?

Pollution & treatment control stocks were up 1.31% in the last day, and down -0.81% over the last week.

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

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. Atmus Filtration Technologies (NYSE:ATMU)

Atmus Filtration Technologies (NYSE:ATMU) 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.

Atmus Filtration Technologies has a valuation score of 29, which is 12 points higher than the pollution & treatment control industry average of 17. It passed 2 out of 7 valuation due diligence checks.

Atmus Filtration Technologies's stock has gained 23.73% in the past year. It has overperformed other stocks in the pollution & treatment control industry by 15 percentage points.

2. Energy Recovery (NASDAQ:ERII)

Energy Recovery (NASDAQ:ERII) 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.

Energy Recovery has a valuation score of 29, which is 12 points higher than the pollution & treatment control industry average of 17. It passed 2 out of 7 valuation due diligence checks.

Energy Recovery's stock has dropped -9.36% in the past year. It has underperformed other stocks in the pollution & treatment control industry by -18 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 -3 points higher than the pollution & treatment control industry average of 17. It passed 1 out of 7 valuation due diligence checks.

Zurn Elkay Water Solutions's stock has gained 18.7% in the past year. It has overperformed other stocks in the pollution & treatment control industry by 10 percentage points.

Are pollution & treatment control stocks a good buy now?

69.23% of pollution & treatment control stocks rated by analysts are a buy right now. On average, analysts expect pollution & treatment control stocks to rise by 13.66% over the next year.

0% of pollution & treatment control stocks have a Zen Rating of A (Strong Buy), 10% of pollution & treatment control stocks are rated B (Buy), 70% are rated C (Hold), 10% are rated D (Sell), and 10% 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 25.79x.

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.