Sectors & Industries IndustrialsPollution & Treatment Controls
Best Pollution & Treatment Control Stocks to Buy Now (2026)
Top pollution & treatment control stocks in 2026 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...

Financials Momentum Sentiment Forecast Dividends Due Diligence

Pollution & Treatment Controls is Zen Rated C and is the 71st ranked industry out of 145 stock market industries

Ticker	Company	Market Cap	Revenue	EBITDA	Earnings	EPS	Rev. Y/Y	Rev. 5Y	Earn. Y/Y	Earn. 5Y	Earnings Date
ATMU	ATMUS FILTRATION TECHNOLOGIES INC	$5.17B	$1.76B	$329.60M	$207.40M	$2.52	5.67%	7.44%	13.00%	N/A	2026-05-01
ZWS	ZURN ELKAY WATER SOLUTIONS CORP	$8.67B	$1.74B	$394.60M	$213.30M	$1.26	10.03%	17.78%	27.27%	-2.22%
FSS	FEDERAL SIGNAL CORP	$7.51B	$2.34B	$458.30M	$270.70M	$4.46	23.25%	15.83%	28.90%	23.07%	2026-05-05
VLTO	VERALTO CORP	$21.66B	$5.59B	$1.38B	$969.00M	$3.91	5.95%	N/A	10.45%	N/A
FTEK	FUEL TECH INC	$48.21M	$26.68M	-$1.61M	-$2.32M	-$0.08	6.14%	3.42%	N/A	N/A
CECO	CECO ENVIRONMENTAL CORP	$2.64B	$774.38M	$125.58M	$50.05M	$1.42	38.79%	19.63%	283.78%	43.92%	2026-05-05
ERII	ENERGY RECOVERY INC	$584.81M	$134.99M	$31.36M	$22.96M	$0.43	-6.87%	2.56%	7.50%	-1.76%	2026-05-06
ADUR	ADURO CLEAN TECHNOLOGIES INC	$474.93M	$175.27k	-$12.69M	-$13.14M	-$0.43	-2.41%	N/A	N/A	N/A
PCT	PURECYCLE TECHNOLOGIES INC	$1.35B	$8.36M	-$83.48M	-$182.57M	-$1.08	N/A	N/A	N/A	N/A	2026-05-12
ARQ	ARQ INC	$97.27M	$120.34M	-$38.40M	-$52.61M	-$1.27	10.44%	12.30%	N/A	N/A	2026-05-11
RAIN	RAIN ENHANCEMENT TECHNOLOGIES HOLDCO INC	$17.11M	$0.00	-$8.79M	-$9.09M	-$1.20	N/A	N/A	N/A	N/A
TOMZ	TOMI ENVIRONMENTAL SOLUTIONS INC	$13.76M	$5.64M	-$2.80M	-$3.75M	-$0.19	-27.17%	-25.78%	N/A	N/A	2026-05-19
CLIR	CLEARSIGN TECHNOLOGIES CORP	$27.04M	$5.23M	-$5.22M	-$5.50M	-$0.99	45.55%	N/A	N/A	N/A
CHNR	CHINA NATURAL RESOURCES INC	$4.34M	$0.00	-$391.45k	-$435.86k	-$0.36	N/A	-100.00%	N/A	N/A	2026-05-13
ZONE	CLEANCORE SOLUTIONS INC	$60.43M	$3.42M	-$122.00M	-$122.61M	-$1.56	108.41%	N/A	N/A	N/A
CLWT	EURO TECH HOLDINGS CO LTD	$9.48M	$14.01M	N/A	$563.00k	$0.07	-18.73%	-0.41%	-75.00%	-21.10%
SCWO	374WATER INC	$43.25M	$215.04k	-$20.06M	-$20.98M	-$1.38	-51.73%	19.96%	N/A	N/A
DEVS	DEVVSTREAM CORP	$1.53M	$33.94k	-$6.59M	-$7.39M	-$2.23	N/A	N/A	N/A	N/A
LIQT	LIQTECH INTERNATIONAL INC	$21.89M	$16.51M	-$5.92M	-$8.53M	-$0.89	13.03%	-6.03%	N/A	N/A

Pollution & Treatment Control Stocks FAQ

What are the best pollution & treatment control stocks to buy right now in May 2026?

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 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: B, Sentiment: C, Safety: C, Financials: A, and AI: C.

Atmus Filtration Technologies (NYSE:ATMU) has a Due Diligence Score of 34, which is 8 points higher than the pollution & treatment control industry average of 26.

ATMU passed 13 out of 38 due diligence checks and has average fundamentals. Atmus Filtration Technologies has seen its stock return 82.87% over the past year, overperforming other pollution & treatment control stocks by 44 percentage points.

Atmus Filtration Technologies has an average 1 year price target of $64.67, an upside of 2% from Atmus Filtration Technologies's current stock price of $63.40.

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: C, Momentum: C, Sentiment: B, Safety: B, Financials: B, and AI: B.

Zurn Elkay Water Solutions (NYSE:ZWS) has a Due Diligence Score of 43, which is 17 points higher than the pollution & treatment control industry average of 26.

ZWS passed 16 out of 38 due diligence checks and has strong fundamentals. Zurn Elkay Water Solutions has seen its stock return 53% over the past year, overperforming other pollution & treatment control stocks by 14 percentage points.

Zurn Elkay Water Solutions has an average 1 year price target of $56.60, an upside of 8.93% from Zurn Elkay Water Solutions's current stock price of $51.96.

Zurn Elkay Water Solutions stock has a consensus Buy recommendation according to Wall Street analysts. Of the 5 analysts covering Zurn Elkay Water Solutions, 40% have issued a Strong Buy rating, 20% have issued a Buy, 40% 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: C, Momentum: C, Sentiment: C, Safety: C, Financials: B, and AI: B.

Federal Signal (NYSE:FSS) has a Due Diligence Score of 55, which is 29 points higher than the pollution & treatment control industry average of 26.

FSS passed 21 out of 38 due diligence checks and has strong fundamentals. Federal Signal has seen its stock return 51.21% over the past year, overperforming other pollution & treatment control stocks by 12 percentage points.

Federal Signal has an average 1 year price target of $135.00, an upside of 9.64% from Federal Signal's current stock price of $123.13.

Federal Signal stock has a consensus Strong Buy recommendation according to Wall Street analysts. Of the 2 analysts covering Federal Signal, 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.

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. Federal Signal (NYSE:FSS)

Federal Signal (NYSE:FSS) has an annual dividend yield of 0.46%, 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 12.8% indicates that its dividend yield is sustainable for the long-term.

2. Veralto (NYSE:VLTO)

Veralto (NYSE:VLTO) has an annual dividend yield of 0.42%, which is the same as the pollution & treatment control industry average of 0.4%.

Veralto's dividend payout ratio of 12.3% indicates that its dividend yield is sustainable for the long-term.

3. Zurn Elkay Water Solutions (NYSE:ZWS)

Zurn Elkay Water Solutions (NYSE:ZWS) has an annual dividend yield of 0.38%, which is the same as the pollution & treatment control industry average of 0.4%. 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 31.7% indicates that its dividend yield is sustainable for the long-term.

Why are pollution & treatment control stocks up?

Pollution & treatment control stocks were up 1.88% in the last day, and up 4.22% 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. Veralto (NYSE:VLTO)

Veralto (NYSE:VLTO) 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.

Veralto has a valuation score of 14, which is 1 points higher than the pollution & treatment control industry average of 13. It passed 1 out of 7 valuation due diligence checks.

Veralto's stock has dropped -8.03% in the past year. It has underperformed other stocks in the pollution & treatment control industry by -47 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 14, which is 1 points higher than the pollution & treatment control industry average of 13. It passed 1 out of 7 valuation due diligence checks.

Atmus Filtration Technologies's stock has gained 82.87% in the past year. It has overperformed other stocks in the pollution & treatment control industry by 44 percentage points.

3. Energy Recovery (NASDAQ:ERII)

Energy Recovery (NASDAQ:ERII) 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.

Energy Recovery has a valuation score of 43, which is 30 points higher than the pollution & treatment control industry average of 13. It passed 3 out of 7 valuation due diligence checks.

Energy Recovery's stock has dropped -28.35% in the past year. It has underperformed other stocks in the pollution & treatment control industry by -68 percentage points.

Are pollution & treatment control stocks a good buy now?

54.55% of pollution & treatment control stocks rated by analysts are a buy right now. On average, analysts expect pollution & treatment control stocks to rise by 21.34% over the next year.

0% of pollution & treatment control stocks have a Zen Rating of A (Strong Buy), 30% of pollution & treatment control stocks are rated B (Buy), 40% are rated C (Hold), 10% are rated D (Sell), and 20% 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 27.07x.

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.