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 D and is the 88th 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	$47.04	$13.72	242.89%	41.63x	31.23x	4.77x	4.95x	2.46x	$288.60M	3.65%	$1.59B	9.47	$8.15B	22.05
ATMU	ATMUS FILTRATION TECHNOLOGIES INC	$46.00	$22.16	107.56%	20.72x	17.58x	2.30x	14.33x	1.86x	$91.90M	2.41%	$265.30M	3.20	$4.21B	14.10
FSS	FEDERAL SIGNAL CORP	$115.31	$37.77	205.30%	29.72x	27.93x	3.41x	5.31x	2.84x	$219.70M	3.14%	$1.32B	21.77	$7.20B	18.11
ERII	ENERGY RECOVERY INC	$16.81	$6.95	141.73%	40.02x	26.72x	6.43x	4.83x	1.39x	$20.23M	2.22%	$185.21M	3.41	$837.21M	25.89
VLTO	VERALTO CORP	$98.94	$31.88	210.34%	26.89x	25.33x	4.51x	8.63x	3.55x	$986.00M	4.01%	$2.85B	11.46	$25.46B	18.97
CECO	CECO ENVIRONMENTAL CORP	$52.00	$9.23	463.40%	35.14x	51.51x	2.56x	5.99x	33.08x	-$17.07M	-0.93%	$309.21M	8.75	$2.06B	17.40
FTEK	FUEL TECH INC	$2.64	N/A	N/A	-26.40x	-51.76x	3.25x	2.02x	N/A	$443.00k	0.53%	$40.66M	1.32	$72.07M	-28.22
ARQ	ARQ INC	$6.60	N/A	N/A	-165.00x	-1,294.12x	2.33x	1.30x	N/A	-$54.41M	-19.86%	$216.77M	5.22	$303.50M	27.60
DEVS	DEVVSTREAM CORP	$1.79	N/A	N/A	N/A	N/A	N/A	-3.96x	N/A	N/A	N/A	-$15.13M	-0.52	$64.04M	N/A
ADUR	ADURO CLEAN TECHNOLOGIES INC	$13.91	N/A	N/A	-35.67x	-29.94x	2,782.00x	33.34x	N/A	-$9.05M	-2.11%	$12.95M	0.42	$421.13M	-38.18
ZONE	CLEANCORE SOLUTIONS INC	$1.02	N/A	N/A	-1.29x	N/A	4.21x	7.78x	N/A	-$2.37M	-27.16%	$1.47M	0.17	$15.34M	-2.48
PCT	PURECYCLE TECHNOLOGIES INC	$10.90	N/A	N/A	-6.45x	-8.72x	605.56x	19.85x	N/A	-$195.28M	-9.97%	$98.87M	0.55	$2.10B	-10.80
TOMZ	TOMI ENVIRONMENTAL SOLUTIONS INC	$0.91	N/A	N/A	-3.97x	-8.96x	2.95x	6.91x	N/A	-$356.56k	-1.97%	$2.66M	0.13	$21.14M	-5.53
SCWO	374WATER INC	$0.41	N/A	N/A	-3.73x	-6.70x	51.25x	6.94x	N/A	-$14.36M	-24.15%	$8.92M	0.06	$60.42M	-3.99
LIQT	LIQTECH INTERNATIONAL INC	$2.39	N/A	N/A	-1.78x	-2.89x	1.49x	1.65x	N/A	-$7.47M	-32.51%	$13.93M	1.45	$27.70M	-3.64
CLWT	EURO TECH HOLDINGS CO LTD	$1.19	$0.58	103.74%	11.90x	N/A	0.60x	0.58x	N/A	$776.00k	8.49%	$15.74M	2.04	$2.20M	2.31
CHNR	CHINA NATURAL RESOURCES INC	$4.94	N/A	N/A	-13.57x	N/A	N/A	0.43x	N/A	-$1.02M	-19.78%	$12.15M	11.60	$4.75M	-12.13
CLIR	CLEARSIGN TECHNOLOGIES CORP	$0.86	N/A	N/A	-7.77x	-5.99x	15.83x	4.30x	N/A	-$3.50M	-7.37%	$10.41M	0.19	$32.69M	-5.64
RAIN	RAIN ENHANCEMENT TECHNOLOGIES HOLDCO INC	$5.34	$17.45k	-99.97%	0.06x	-7.27x	N/A	-5.24x	0.00x	-$3.37M	-8.31%	-$7.72M	-1.02	$46.41M	-7.04

Pollution & Treatment Control Stocks FAQ

What are the best pollution & treatment control stocks to buy right now in Nov 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 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: B, Sentiment: B, Safety: B, 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 26.62% over the past year, overperforming other pollution & treatment control stocks by 29 percentage points.

Zurn Elkay Water Solutions has an average 1 year price target of $52.50, an upside of 11.61% from Zurn Elkay Water Solutions's current stock price of $47.04.

Zurn Elkay Water Solutions stock has a consensus Strong Buy recommendation according to Wall Street analysts. Of the 2 analysts covering Zurn Elkay Water Solutions, 50% have issued a Strong Buy rating, 50% have issued a Buy, 0% have issued a hold, while 0% have issued a Sell rating, and 0% have issued a Strong Sell.

2. Atmus Filtration Technologies (NYSE:ATMU)

Atmus Filtration Technologies (NYSE:ATMU) 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 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 39, which is 11 points higher than the pollution & treatment control industry average of 28.

ATMU passed 15 out of 38 due diligence checks and has average fundamentals. Atmus Filtration Technologies has seen its stock return 18.34% 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 $44.50, a downside of -3.26% from Atmus Filtration Technologies's current stock price of $46.00.

Atmus Filtration Technologies stock has a consensus Hold recommendation according to Wall Street analysts. Of the 4 analysts covering Atmus Filtration Technologies, 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.

3. Federal Signal (NYSE:FSS)

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

Federal Signal (NYSE:FSS) has a Due Diligence Score of 49, which is 21 points higher than the pollution & treatment control industry average of 28.

FSS passed 18 out of 38 due diligence checks and has strong fundamentals. Federal Signal has seen its stock return 41.38% over the past year, overperforming other pollution & treatment control stocks by 44 percentage points.

Federal Signal has an average 1 year price target of $123.00, an upside of 6.67% from Federal Signal's current stock price of $115.31.

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.

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 0.47%, which is the same as the pollution & treatment control industry average of 0.4%. 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 0.34%, which is the same as the pollution & treatment control industry average of 0.4%.

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 down?

Pollution & treatment control stocks were down -0.16% in the last day, and down -4.78% 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. 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 10 points higher than the pollution & treatment control industry average of 19. It passed 2 out of 7 valuation due diligence checks.

Atmus Filtration Technologies's stock has gained 18.34% in the past year. It has overperformed other stocks in the pollution & treatment control industry by 20 percentage points.

2. Devvstream (NASDAQ:DEVS)

Devvstream (NASDAQ:DEVS) 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.

Devvstream has a valuation score of 0, which is -19 points higher than the pollution & treatment control industry average of 19. It passed 0 out of 7 valuation due diligence checks.

Devvstream's stock has dropped -97.98% in the past year. It has underperformed other stocks in the pollution & treatment control industry by -96 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 -5 points higher than the pollution & treatment control industry average of 19. It passed 1 out of 7 valuation due diligence checks.

Veralto's stock has dropped -3.41% in the past year. It has underperformed other stocks in the pollution & treatment control industry by -1 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 18.35% over the next year.

0% of pollution & treatment control stocks have a Zen Rating of A (Strong Buy), 25% of pollution & treatment control stocks are rated B (Buy), 41.67% are rated C (Hold), 25% are rated D (Sell), and 8.33% 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 26.49x.

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. Atmus Filtration Technologies (NYSE:ATMU)

3. Federal Signal (NYSE:FSS)

1. Federal Signal (NYSE:FSS)

2. Atmus Filtration Technologies (NYSE:ATMU)

1. Atmus Filtration Technologies (NYSE:ATMU)

2. Devvstream (NASDAQ:DEVS)

3. Veralto (NYSE:VLTO)

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