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 B and is the 57th 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
ATMU	ATMUS FILTRATION TECHNOLOGIES INC	$53.41	$21.53	148.06%	22.07x	19.88x	2.54x	12.93x	2.59x	$127.60M	2.91%	$336.70M	4.11	$4.71B	14.73
ZWS	ZURN ELKAY WATER SOLUTIONS CORP	$47.95	$13.76	248.52%	42.43x	31.55x	4.86x	5.04x	2.43x	$288.60M	3.58%	$1.59B	9.47	$8.30B	22.46
FTEK	FUEL TECH INC	$1.61	N/A	N/A	-17.89x	-26.31x	2.03x	1.22x	N/A	$2.64M	5.28%	$41.01M	1.32	$36.95M	-16.42
FSS	FEDERAL SIGNAL CORP	$114.19	$37.34	205.84%	29.43x	27.35x	3.37x	5.25x	2.80x	$219.70M	3.17%	$1.32B	21.77	$7.13B	17.93
CECO	CECO ENVIRONMENTAL CORP	$62.51	$9.17	581.95%	42.24x	62.24x	3.08x	7.21x	36.17x	-$17.07M	-0.77%	$309.21M	8.75	$2.44B	20.55
ERII	ENERGY RECOVERY INC	$13.84	$8.51	62.70%	40.71x	19.02x	5.44x	4.05x	0.78x	$19.93M	2.71%	$180.83M	3.40	$686.03M	24.48
VLTO	VERALTO CORP	$102.29	$31.84	221.31%	27.80x	26.10x	4.66x	8.92x	3.54x	$986.00M	3.88%	$2.85B	11.46	$26.30B	19.59
ARQ	ARQ INC	$3.41	N/A	N/A	-34.10x	-31.40x	1.20x	0.67x	N/A	-$45.82M	-32.29%	$217.15M	5.22	$164.41M	17.22
ADUR	ADURO CLEAN TECHNOLOGIES INC	$11.25	N/A	N/A	-28.85x	-20.25x	2,250.00x	26.97x	N/A	-$9.05M	-2.61%	$12.95M	0.42	$338.56M	-30.69
PCT	PURECYCLE TECHNOLOGIES INC	$9.28	N/A	N/A	-6.93x	-8.11x	299.35x	24.51x	N/A	-$194.99M	-11.67%	$68.22M	0.38	$1.87B	-14.29
RAIN	RAIN ENHANCEMENT TECHNOLOGIES HOLDCO INC	$7.19	$1.59M	-100.00%	0.00x	-9.79x	N/A	-3.93x	0.00x	-$3.64M	-6.67%	-$9.58M	-1.26	$44.43M	-8.01
ZONE	CLEANCORE SOLUTIONS INC	$0.26	N/A	N/A	-0.22x	N/A	2.74x	0.31x	N/A	-$5.37M	-75.29%	$172.50M	6.37	$40.41M	-2.18
LIQT	LIQTECH INTERNATIONAL INC	$1.98	N/A	N/A	-1.98x	-2.46x	1.13x	1.49x	N/A	-$6.55M	-34.39%	$12.81M	1.33	$24.94M	-3.95
TOMZ	TOMI ENVIRONMENTAL SOLUTIONS INC	$0.79	N/A	N/A	-3.15x	-6.44x	2.78x	7.22x	N/A	-$569.97k	-3.55%	$2.21M	0.11	$18.89M	-4.39
SCWO	374WATER INC	$0.23	N/A	N/A	-1.92x	-3.76x	17.69x	5.99x	N/A	-$14.30M	-40.87%	$6.50M	0.04	$39.39M	-2.37
CLWT	EURO TECH HOLDINGS CO LTD	$1.24	$0.58	115.12%	12.40x	N/A	0.62x	0.61x	N/A	$776.00k	8.15%	$15.74M	2.04	$2.58M	2.71
CLIR	CLEARSIGN TECHNOLOGIES CORP	$0.63	N/A	N/A	-5.22x	-5.11x	16.05x	3.67x	N/A	-$3.89M	-11.18%	$9.08M	0.16	$23.05M	-3.80
DEVS	DEVVSTREAM CORP	$1.31	N/A	N/A	-0.42x	N/A	187.14x	-0.30x	N/A	N/A	N/A	-$19.33M	-5.15	$16.88M	N/A
CHNR	CHINA NATURAL RESOURCES INC	$3.67	N/A	N/A	-10.08x	N/A	N/A	0.32x	N/A	-$1.02M	-26.62%	$12.15M	11.60	$3.42M	-8.73

Pollution & Treatment Control Stocks FAQ

What are the best pollution & treatment control stocks to buy right now in Dec 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. Atmus Filtration Technologies (NYSE:ATMU)

Atmus Filtration Technologies (NYSE:ATMU) is the #1 top pollution & treatment control stock out of 19 with a Zen Rating of A. Stocks with a rating of A have had an average return of +32.52% per year. Learn more.

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

Atmus Filtration Technologies (NYSE:ATMU) has a Due Diligence Score of 41, which is 13 points higher than the pollution & treatment control industry average of 28.

ATMU passed 16 out of 38 due diligence checks and has strong fundamentals. Atmus Filtration Technologies has seen its stock return 36.22% over the past year, overperforming other pollution & treatment control stocks by 20 percentage points.

Atmus Filtration Technologies has an average 1 year price target of $52.33, a downside of -2.02% from Atmus Filtration Technologies's current stock price of $53.41.

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

2. Zurn Elkay Water Solutions (NYSE:ZWS)

Zurn Elkay Water Solutions (NYSE:ZWS) is the #2 top pollution & treatment control stock out of 19 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: A, Financials: B, and AI: B.

Zurn Elkay Water Solutions (NYSE:ZWS) has a Due Diligence Score of 35, which is 7 points higher than the pollution & treatment control industry average of 28.

ZWS passed 14 out of 38 due diligence checks and has average fundamentals. Zurn Elkay Water Solutions has seen its stock return 26.78% 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 $54.33, an upside of 13.31% from Zurn Elkay Water Solutions's current stock price of $47.95.

Zurn Elkay Water Solutions stock has a consensus Strong Buy recommendation according to Wall Street analysts. Of the 3 analysts covering Zurn Elkay Water Solutions, 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. Fuel Tech (NASDAQ:FTEK)

Fuel Tech (NASDAQ:FTEK) is the #3 top pollution & treatment control stock out of 19 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 Fuel Tech (NASDAQ:FTEK) is: Value: C, Growth: C, Momentum: C, Sentiment: B, Safety: C, Financials: C, and AI: C.

Fuel Tech (NASDAQ:FTEK) has a Due Diligence Score of 21, which is -7 points lower than the pollution & treatment control industry average of 28. Although this number is below the industry average, our proven quant model rates FTEK as a "B".

FTEK passed 6 out of 33 due diligence checks and has weak fundamentals. Fuel Tech has seen its stock return 54.81% over the past year, overperforming other pollution & treatment control stocks by 38 percentage points.

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

Out of 2 pollution & treatment control stocks that have issued dividends in the past year, the 2 pollution & treatment control stocks with the highest dividend yields are:

1. 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 0.37%. 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 13.9% indicates that its dividend yield is sustainable for the long-term.

2. Atmus Filtration Technologies (NYSE:ATMU)

Atmus Filtration Technologies (NYSE:ATMU) has an annual dividend yield of 0.39%, which is the same as the pollution & treatment control industry average of 0.37%.

Atmus Filtration Technologies's dividend payout ratio of 6.4% indicates that its dividend yield is sustainable for the long-term.

Why are pollution & treatment control stocks up?

Pollution & treatment control stocks were up 0.22% in the last day, and up 3.86% 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. Energy Recovery (NASDAQ:ERII)

Energy Recovery (NASDAQ:ERII) 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.

Energy Recovery 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.

Energy Recovery's stock has dropped -6.11% in the past year. It has underperformed other stocks in the pollution & treatment control industry by -23 percentage points.

2. Veralto (NYSE:VLTO)

Veralto (NYSE:VLTO) 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.

Veralto 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.

Veralto's stock has dropped -1.16% in the past year. It has underperformed other stocks in the pollution & treatment control industry by -18 percentage points.

3. Atmus Filtration Technologies (NYSE:ATMU)

Atmus Filtration Technologies (NYSE:ATMU) 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.

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 36.22% in the past year. It has overperformed other stocks in the pollution & treatment control industry by 20 percentage points.

Are pollution & treatment control stocks a good buy now?

60% of pollution & treatment control stocks rated by analysts are a buy right now. On average, analysts expect pollution & treatment control stocks to rise by 19.64% over the next year.

10% of pollution & treatment control stocks have a Zen Rating of A (Strong Buy), 30% of pollution & treatment control stocks are rated B (Buy), 30% are rated C (Hold), 0% are rated D (Sell), and 30% 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 28.8x.

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.