Best Waste & Water Management Companies in Washington, United States
The 58 best Waste & Water Management companies in Washington, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Ionics.
Our analysis of 50 Waste & Water Management companies
$2.9b in tracked funding; 89% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Waste & Water Management companies in Washington
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Ionics Provider of water purification and filtration systems | $130M | 268 mo ago | Acquired | — | 1995 | — | 56 patents Ionic power devices and advanced water treatment/solidification for heavy‑oil operations | — |
| 2 | HaloSource Provider of clean water & antimicrobial solutions | $48M | 93 mo ago | Public | — | 1999 | — | 114 patents Advanced granular filtration media and dual-polymer systems for water purification and solid separation | — |
| 3 | DTG Recycle Manufacturer of recycled roofing and wooden materials | $32M | 77 mo ago | Acquired | Dan Guimont Founder & Chairman | 1999 | WordPressMySQLPHP+25 | — | — |
| 4 | Essentia Water Manufacturer of alkaline & electrolyzed drinking water bottles | $18M | 142 mo ago | Acquired | — | 1998 | WordPressMySQLPHP+37 | — | — |
| 5 | Resynergi Offers system for plastic to oil conversion 24Patents top 39%Funding top 42%Innovation top 46%Moat bottom 49% All 7 signals ▾Patentstop 39% Fundingtop 42% Innovationtop 46% Moatbottom 49% Globalbottom 35% Marketbottom 22% Newsbottom 21% Patents: 13 patents matched (strict assignee match) · 8 filings since 2022 vs 5 in 2017-21 Funding: Raised $6.4M across 4 rounds · 4 rounds over 2 yrs (2.0/yr) rank vs industry peers · Fliar Intelligence Index 24/100 | $6M | 17 mo ago | Series B | — | 2009 | — | 13 patents Microwave‑assisted pyrolysis converting plastic waste into fuels and chemicals | — |
| 6 | Return Home Provider of funeral services | $5M | 37 mo ago | Seed | Micah Truman Founder & CEO | 2019 | WordPressMySQLPHP+16 | — | — |
| 7 | Mercurius Biorefining Provider of waste management services | $5M | 158 mo ago | Funding Raised | Karl Seck CEO | 2010 | — | 2 patents Integrated biorefinery process converting carbohydrate/lignocellulose feedstocks into liquid biofuels | — |
| 8 | Freestone Environmental Services Provider of environment management services | $4M | 172 mo ago | Acquired | — | 1997 | — | — | — |
| 9 | Ravelfuture Provider of textile recycling solutions for blended materials 55Funding top 39%Global bottom 48% All 2 signals ▾Fundingtop 39% Globalbottom 48% Funding: Raised $3.3M across 2 rounds · 2 rounds over 2 yrs (1.0/yr) Global: Investors from 2 countries beyond United States rank vs industry peers · Fliar Intelligence Index 55/100 | $3M | 15 mo ago | Seed | — | 2019 | — | — | — |
| 10 | Pure Blue Tech Developer of self-cleaning membrane elements for efficient water generations | $1M | 39 mo ago | Seed | Ryan Vogel CEO & Co-Founder | 2013 | ReactApache HTTP ServerGoogle Font API+3 | — | — |
| 11 | Sequoia Scientific, Inc. Manufacturer of optical instruments for particle analysis. | $754K | 54 mo ago | Funding Raised | — | 1995 | WordPressMySQLPHP+17 | — | 5 launchs |
| 12 | PotaVida Provider of water management services | $475K | 117 mo ago | Seed | — | 2011 | — | 3 patents Solar-powered water purification using UV disinfection technology | — |
| 13 | Perca | $168K | 7 mo ago | Seed | Russ Davis Chief Executive Officer | 2023 | — | 3 patents Vermifiltration-based toxic contaminant removal from wastewater | — |
| 14 | PMWC Non-profit company focused on providing water services to households and woodlands | $106K | 149 mo ago | Early Stage | — | 1929 | — | — | — |
Top 12 Waste & Water Management companies in Washington
#1
Series B · Vancouver, Washington · founded 2009 · 11 employees$6.4Mraised▾
Offers system for plastic to oil conversion
- Jan 2025Series B$18M
- Jan 2024Series B$6.4M
- Jan 2023Series A$6.4M
- Jun 2018Series A$3.5M
#2
Seed · Seattle, Washington · founded 2019 · 5 employees$3.3Mraised▾
Provider of textile recycling solutions for blended materials. It offers a proprietary process that isolates materials from blended fibers, maximizing recovery and minimizing waste. This process transforms textile waste into reusable materials, such as rPET pellets, which can be used to create new fibers, yarns, fabrics, and clothing. The technology maintains the integrity of base fibers while purifying them, using a safe, energy-efficient, closed-loop system that avoids additional waste or byproducts. The company aims to enable the circular economy for apparel, diverting textile waste from landfills and reducing reliance on fossil fuels.
- Mar 2025Seed—
- Mar 2025Grant (prize money)$994.9K
- Jul 2024Seed$2.3M
#3
Seed · Walla Walla, Washington · founded 2023$168Kraised▾
- Nov 2025Seed$68K
- Jan 2025Seed$100K
#4
Acquired · Bellevue, Washington · founded 1995 · 2200 employees$130Mraised▾
Manufacturer of water and wastewater treatment systems. The company engages in the designing, installing, operating and maintaining of water and wastewater treatment systems. It also provides emergency and long-term water purification services.
- Mar 2004Post IPO$130M
#5
Public · Bothell, Washington · founded 1999 · 13 employees$48.4Mraised▾
Provider of clean water & antimicrobial solutions
- Sep 2018Post IPO$2.1M
- Jan 2018Post IPO$987.6K
- Jun 2017Post IPO$2.3M
- Nov 2014Post IPO$11M
#6
Seed · Auburn, Washington · founded 2019 · 11 employees$4.6Mraised▾
Provider of funeral services
- May 2023Seed$3.7M
- Sep 2020Seed$900K
#7
Acquired · Seattle, Washington · founded 1999 · 1 employees$32Mraised▾
Manufacturer of recycled roofing and wooden materials
- Jan 2020PE$32M
#8
Acquired · Bothell, Washington · founded 1998 · 182 employees$18.2Mraised▾
Manufacturer of alkaline & electrolyzed drinking water bottles
- Sep 2014PE$18.2M
- Conventional Debt$3.2M
#9
Seed · Seattle, Washington · founded 2013 · 9 employees$1.2Mraised▾
Operator of a membrane technology company intended to generate and reuse water from various sources. The company offers ultrasonic and nanopatterned membrane technologies that combat membrane fouling, allowing industrial companies and municipalities to filter and purify water, wastewater, seawater, milk, and other liquids with less money, maintenance, chemicals, downtime, and waste disposal.
- Mar 2023Seed$871K
- Aug 2016Conventional Debt$300K
#10
Acquired · Richland, Washington · founded 1997 · 27 employees$4.3Mraised▾
Provider of environment management services
- Feb 2012Grant (prize money)$2.2M
- Feb 2012Grant (prize money)$2.2M
#11
Funding Raised · Ferndale, Washington · founded 2010 · 5 employees$4.6Mraised▾
Mercurius Biorefining is a company that is developing and scaling up technology to produce carbon negative drop-in fuels and chemicals using its patented REACH™ process. They have a team of experienced professionals and have partnered with the University of California, Davis to develop their technology. They are also planning to establish pilot and demo plants in Queensland.
- Apr 2013Grant (prize money)$4.6M
#12
Funding Raised · Bellevue, Washington · founded 1995 · 20 employees$753.8Kraised▾
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- Jan 2022Grant (prize money)$254.1K
- Apr 2020Grant (prize money)$499.7K
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Waste & Water Management coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Water Treatment in Washington is moving
A read on the academic research around Water Treatment in Washington — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 56 papers.
Washington University in St. Louis, University of Washington, and Washington State University lead balanced water treatment and membrane separation research, with advancement-dominant but moderately optimistic findings (mean stance 0.36).
- Washington University in St. Louis24
- University of Washington12
- Washington State University8
- George Washington University7
- University of Washington Applied Physics Laboratory2
- Membrane4
- Graphene3
- Nanocomposite2
- Oxide2
- Chemical engineering2
- Wastewater1→3
- Adsorption4
- Chlorine3
- Filtration (mathematics)2
- Water quality2
- Disinfectant2