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...

Growth Financials Momentum Sentiment Forecast Dividends Due Diligence

Pollution & Treatment Controls is Zen Rated C and is the 60th ranked industry out of 145 stock market industries

Ticker	Company	Price	Graham Fair Value	Graham Fair Value %	P/E	Forward P/E	P/S	P/B	PEG	Free Cash Flow	Free Cash Flow Yield	Book Value	BVPS	EV	EV/EBITDA
ZWS	ZURN ELKAY WATER SOLUTIONS CORP	$43.98	$13.05	236.97%	43.12x	30.57x	4.59x	4.71x	2.22x	$281.50M	3.80%	$1.56B	9.29	$7.71B	22.02
FSS	FEDERAL SIGNAL CORP	$124.60	$35.75	248.54%	34.23x	31.01x	3.82x	6.00x	3.04x	$226.50M	3.00%	$1.26B	20.83	$7.81B	20.75
FTEK	FUEL TECH INC	$2.80	N/A	N/A	-31.11x	-46.67x	3.24x	2.08x	N/A	-$1.18M	-1.36%	$41.44M	1.35	$74.96M	-31.76
CECO	CECO ENVIRONMENTAL CORP	$44.84	N/A	N/A	29.89x	39.16x	2.41x	5.31x	N/A	-$16.99M	-1.07%	$298.36M	8.46	$1.81B	16.00
VLTO	VERALTO CORP	$106.95	$30.07	255.61%	29.63x	28.08x	4.95x	10.00x	4.13x	$943.00M	3.55%	$2.65B	10.69	$27.65B	20.87
ATMU	ATMUS FILTRATION TECHNOLOGIES INC	$38.07	$20.85	82.56%	17.15x	15.25x	1.90x	11.86x	1.70x	$91.90M	2.92%	$265.30M	3.20	$3.55B	11.91
ARQ	ARQ INC	$5.47	N/A	N/A	-109.40x	91.17x	1.97x	1.06x	N/A	-$75.16M	-33.25%	$218.17M	5.28	$251.40M	23.72
ZONE	CLEANCORE SOLUTIONS INC	$3.99	N/A	N/A	-8.49x	N/A	17.73x	20.56x	N/A	-$3.32M	-9.95%	$1.65M	0.20	$36.06M	-11.21
ERII	ENERGY RECOVERY INC	$13.33	$9.20	44.91%	36.03x	21.85x	5.19x	3.67x	0.69x	$24.09M	3.29%	$198.11M	3.61	$677.34M	22.90
PCT	PURECYCLE TECHNOLOGIES INC	$13.28	N/A	N/A	-11.35x	-16.40x	1,475.56x	10.01x	N/A	-$200.76M	-8.52%	$238.21M	1.34	$2.77B	-26.48
ADUR	ADURO CLEAN TECHNOLOGIES INC	$11.00	N/A	N/A	N/A	N/A	N/A	36.02x	N/A	N/A	N/A	$8.83M	0.31	$312.29M	N/A
SCWO	374WATER INC	$0.22	N/A	N/A	-2.20x	N/A	44.00x	2.53x	N/A	-$12.43M	-39.09%	$12.58M	0.09	$25.58M	-1.87
TOMZ	TOMI ENVIRONMENTAL SOLUTIONS INC	$0.97	N/A	N/A	-5.71x	-8.83x	2.37x	5.06x	N/A	-$550.40k	-2.78%	$3.84M	0.19	$22.00M	-8.58
CLIR	CLEARSIGN TECHNOLOGIES CORP	$0.55	N/A	N/A	-4.56x	-3.91x	10.32x	2.38x	N/A	-$4.53M	-14.99%	$12.04M	0.22	$15.98M	-2.63
LIQT	LIQTECH INTERNATIONAL INC	$1.98	N/A	N/A	-1.34x	-2.44x	1.27x	1.26x	N/A	-$7.96M	-41.87%	$15.06M	1.57	$21.58M	-2.86
CLWT	EURO TECH HOLDINGS CO LTD	$1.22	$0.57	114.20%	12.24x	N/A	0.61x	0.60x	N/A	$776.00k	8.25%	$15.74M	2.04	$2.46M	2.58
CHNR	CHINA NATURAL RESOURCES INC	$3.53	N/A	N/A	-9.68x	N/A	N/A	0.30x	N/A	-$1.02M	-27.72%	$12.15M	11.60	$3.27M	-8.34
DEVS	DEVVSTREAM CORP	$0.32	N/A	N/A	N/A	N/A	N/A	-0.71x	N/A	N/A	N/A	-$15.13M	-0.52	$14.92M	N/A

Pollution & Treatment Control Stocks FAQ

What are the best pollution & treatment control stocks to buy right now in Aug 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: B, Financials: B, and AI: B.

Zurn Elkay Water Solutions (NYSE:ZWS) has a Due Diligence Score of 42, which is 14 points higher than the pollution & treatment control industry average of 28.

ZWS passed 16 out of 38 due diligence checks and has strong fundamentals. Zurn Elkay Water Solutions has seen its stock return 48.08% over the past year, overperforming other pollution & treatment control stocks by 26 percentage points.

Zurn Elkay Water Solutions has an average 1 year price target of $41.00, a downside of -6.78% from Zurn Elkay Water Solutions's current stock price of $43.98.

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. Federal Signal (NYSE:FSS)

Federal Signal (NYSE:FSS) 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 Federal Signal (NYSE:FSS) is: Value: C, Growth: B, Momentum: B, Sentiment: C, Safety: B, Financials: A, and AI: B.

Federal Signal (NYSE:FSS) has a Due Diligence Score of 41, which is 13 points higher than the pollution & treatment control industry average of 28.

FSS passed 15 out of 38 due diligence checks and has strong fundamentals. Federal Signal has seen its stock return 36.92% over the past year, overperforming other pollution & treatment control stocks by 15 percentage points.

Federal Signal has an average 1 year price target of $123.00, a downside of -1.28% from Federal Signal's current stock price of $124.60.

Federal Signal stock has a consensus Buy recommendation according to Wall Street analysts. Of the 4 analysts covering Federal Signal, 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.

3. Fuel Tech (NASDAQ:FTEK)

Fuel Tech (NASDAQ:FTEK) 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 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 30, which is 2 points higher than the pollution & treatment control industry average of 28.

FTEK passed 9 out of 33 due diligence checks and has average fundamentals. Fuel Tech has seen its stock return 190.16% over the past year, overperforming other pollution & treatment control stocks by 168 percentage points.

Fuel Tech has an average 1 year price target of $4.00, an upside of 42.86% from Fuel Tech's current stock price of $2.80.

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.

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. Zurn Elkay Water Solutions (NYSE:ZWS)

Zurn Elkay Water Solutions (NYSE:ZWS) has an annual dividend yield of 0.8%, which is the same as the pollution & treatment control industry average of 0.42%. 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.

2. Federal Signal (NYSE:FSS)

Federal Signal (NYSE:FSS) has an annual dividend yield of 0.42%, which is the same as the pollution & treatment control industry average of 0.42%. 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 14.3% indicates that its dividend yield is sustainable for the long-term.

3. Atmus Filtration Technologies (NYSE:ATMU)

Atmus Filtration Technologies (NYSE:ATMU) has an annual dividend yield of 0.26%, which is the same as the pollution & treatment control industry average of 0.42%.

Atmus Filtration Technologies's dividend payout ratio of 6.8% indicates that its dividend yield is sustainable for the long-term.

Why are pollution & treatment control stocks up?

Pollution & treatment control stocks were up 1.5% in the last day, and up 8.55% 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 14 points higher than the pollution & treatment control industry average of 15. It passed 2 out of 7 valuation due diligence checks.

Atmus Filtration Technologies's stock has gained 26.14% in the past year. It has overperformed other stocks in the pollution & treatment control industry by 4 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 14 points higher than the pollution & treatment control industry average of 15. It passed 2 out of 7 valuation due diligence checks.

Energy Recovery's stock has dropped -16.84% in the past year. It has underperformed other stocks in the pollution & treatment control industry by -39 percentage points.

3. Veralto (NYSE:VLTO)

Veralto (NYSE:VLTO) 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.

Veralto has a valuation score of 14, which is -1 points higher than the pollution & treatment control industry average of 15. It passed 1 out of 7 valuation due diligence checks.

Veralto's stock has gained 4.86% in the past year. It has underperformed other stocks in the pollution & treatment control industry by -17 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 13.31% over the next year.

0% of pollution & treatment control stocks have a Zen Rating of A (Strong Buy), 18.18% of pollution & treatment control stocks are rated B (Buy), 63.64% are rated C (Hold), 18.18% are rated D (Sell), and 0% 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 28.64x.

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.

Pollution & Treatment Control Stocks FAQ

1. Zurn Elkay Water Solutions (NYSE:ZWS)

2. Federal Signal (NYSE:FSS)

3. Fuel Tech (NASDAQ:FTEK)

1. Zurn Elkay Water Solutions (NYSE:ZWS)

2. Federal Signal (NYSE:FSS)

3. Atmus Filtration Technologies (NYSE:ATMU)

1. Atmus Filtration Technologies (NYSE:ATMU)

2. Energy Recovery (NASDAQ:ERII)

3. Veralto (NYSE:VLTO)

Company

Stock Tools

Stock Ideas