This article showcases our top picks for the best California based Water Purification companies. These startups and companies are taking a variety of approaches to innovating the Water Purification industry, but are all exceptional companies well worth a follow.
We tried to pick companies across the size spectrum from cutting edge startups to established brands.
We selected these startups and companies for exceptional performance in one of these categories:
- Innovation
- Innovative ideas
- Innovative route to market
- Innovative product
- Growth
- Exceptional growth
- Exceptional growth strategy
- Management
- Societal impact
Top California Water Purification Startups
Data sourced from Crunchbase and SemRush.
Marrone Bio Innovations
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Marrone Bio Innovations is a pesticide company developing natural products for weed, pest, and plant disease management.
LARQ
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LARQ helps people access pristine drinking water easily and sustainably.
Zen Beverage
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Zen Beverage offers Zenwtr, a vapor distilled alkaline water bottled in recyclable ocean-bound plastic.
Sepion Technologies
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Sepion is an advanced membrane company offering a platform suite of highly-tunable nanoscale membranes for multiple industrial markets.
WaterGuru
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WaterGuru is a safe and clean water system for pool problems.
AquaHydrate
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AQUAhydrate is performance water brand that delivers a healthy balance of alkalinity, electrolytes and trace minerals.
Water Harvesting
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Metal-Organic Framework (MOF) based atmospheric water generation (AWG) products that deliver water recovery & humidity management solutions.
Cloud Water Filters
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Cloud is a water brand, building a network of lifelong customers around the single promise of toxin-free, nutrient-rich water.
ConnectedYard (pHin)
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pHin – The complete Smart Water Care Solution for pool and hot tub care
Water Health International
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WaterHealth International provides de-centralized, scalable, safe, and affordable water solutions.
SunToWater Technologies
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SunToWater Technologies develops the SunToWater Atmospheric Water Generator that can create pure drinking water in various climates.
Liquidity Nanotech Corporation
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Liquidity manufactures breakthrough water purification cartridges, based on revolutionary membrane nanoscience.
Impact Water
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Impact Water is a social business that delivers safe drinking water to institutions and communities.
Fred Water
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Fred Water is a beverage company that creates a brand that advocates the indisputable of water.
Safe H2O
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Safe H2O operates as a water bio detection company that provides pathogen test systems and data services.
Catalina Sea Ranch
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Catalina Sea Ranch specializes in the fields of Mediterranean mussels, Purple Hinged Rock Scallop, and Aquaculture.
BioLargo
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BioLargo provides solutions to keep water, air, food, energy, people, plants, and animals clean, safe, and healthy.
OndaVia
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OndaVia develops microfluidics- and nanotechnology-based solutions that are capable of detecting contaminants.
Pax Scientific
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Pax Scientific is a research and development firm that provides streamlined solutions for friction and fluid-related industrial concerns.
H2O Recycling Systems
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H2O Recycling Systems is a wastewater treatment company that specializes in filtration and distillation of undrinkable water.
NGIN Network for Global Innovation
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NGIN is a global ecosystem for cleantech entrepreneurs that accelerates commercialization of impact technologies.
Carollo Engineers
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Carollo Engineers is a full-service environmental engineering firm that plans, designs, and constructs water and wastewater facilities.
Enagic
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Enagic is a manufacturer of alkaline ionizers and water filtration machines.
AquaSeca
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Be Alerted to Water Events Before Damage Occurs.
WaterIsLife
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Providing Clean Water, Sanitation and Hygiene Solutions. Saving lives and transforming communities.
American States Water Company
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American States Water Company (AWR), is the parent company of Golden State Water Company (GSWC) and American States Utility Services, Inc.
Patriot Environmental Services
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Patriot Environmental Services strives to be the premier provider of comprehensive environmental services in the western United States.
HYDRENT
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Hydrant is a company that offers a water filtration and ionization device.
Bottle Bright
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Bottle Bright creates unique all natural cleaners for drinking containers with an environmentally friendly focus.
AqueoUS Vets
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AqueoUS Vets deals with drinking, groundwater treatment and wastewater contaminants elimination services.
Aquafine Corporation
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Aquafine provides UV solutions worldwide for TOC reduction, chlorine and chloramines destruction, ozone destruction and disinfection.
MISCOwater
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MISCOwater is a provider of process and equipment solutions to the municipal water, wastewater, and industrial markets.
Rayne Corporation
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Rayne Corp develops, manufactures, and markets water treatment systems and products.
Pure Flo Water
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Pure Flo is the most popular San Diego bottled water delivery provider.
Metropolitan Water District of Southern California
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Metropolitan Water District of Southern California is a regional wholesaler and the supplier of treated water in the United States.
Sylvan Source, Inc.
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Industrial water treatment and energy recovery systems with superior energy efficiency, fewer points of failure, up to 50% lower CapEx/OpEx
Trussell Technologies
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Trussell Technologies is an environmental engineering firm that offers water reuse and treatment and pilot-scale testing services.
Puretec Industrial Water
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Puretec provides water treatment solutions that transform incoming city water into highly purified deionized water.
Valley Water
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Valley Water is a government agency that provides stream stewardship, water supply and natural flood protection services.
AquaGenesis
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Aqua Genesis is a consulting, marketing and distribution company for environmentally friendly, hard water treatment technologies.
Water Innovation Accelerator
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Water Innovation Accelerator specializes in wastewater management, water infrastructure, data science and ocean conservation.
GAR Bennett
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GAR Bennett specializes in water management, crop protection and regulatory compliance including pest control & gopher management services.
Coast Pneumatics, Inc.
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Coast Pneumatics is a Value-Add Supplier, Contract Manufacturer & National Distributor of pneumatic and electric automation products.
California American Water
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California American Water provides high-quality and reliable water.
Calleguas Municipal Water District
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Calleguas Municipal Water District is a public utility company that supplies water to residents and other interested individuals.
Exergy Technologies Corp.
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Providing advanced membrane and electrochemical separation technologies for recovery of valuable process materials, and reuse of water.
Hayward Gordon
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Hayward Gordon is a pump, mixer, strainer and engineered systems manufacturer that specializes in wastewater treatment pumps.
Express Water
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Expres Water is a manufacturer and seller of reverse osmosis, whole-house systems, filters, water softeners, accessories, and part products.
Eversoft
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Eversoft provides water softeners, filtration, installation, R.O. systems, repair and maintenance services for various industries.
LEE+RO
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LEE+RO specializes in water treatment, recycled water, civil engineering, construction management and environmental engineering solutions.
Water Systems Consulting
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Water Systems Consulting is a firm that provides solutions for water, wastewater, recycled water, and water resources.
California Rural Water Association
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CRWA was founded as an association that provide on-site technical assistance & specialized training for rural water and wastewater systems.
ForeverPure
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ForeverPure designs and manufactures water purification, seawater and brackish water desalination systems.
Hydrodex
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Water Treatment Equipment and Water Filters manufacturer
LifeSource Water Systems
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LifeSource Water Systems manufactures and distributes water treatment products for residential, commercial, and industrial applications.
San Gabriel Valley Water
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San Gabriel Valley Water provides water utility services to the consumer.
San Diego Regional Chamber of Commerce
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The Chamber offers unprecedented benefits, discounts, and opportunities to make San Diego businesses prosperous.
Stetson Engineers Inc
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Stetson Engineers Inc is a water resource specialist firm that works on water resources issues.
Morey Plumbing, Heating & Cooling Inc.
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Morey Plumbing Heating & Cooling, Inc., prides itself on being the number one HVAC and plumbing company in the San Diego area.
EMWD
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EMWD renders drinking water, sewage collection, wastewater management, desalination and water recycling services to its customers.
PTG Water & Energy
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PTG Water and Energy is a renewables and environment company that offers wastewater treatment and energy generation services..
Crystal Springs Water
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Crystal Springs Water is a bottled water supplier company for residents and businesses.
Medallion Landscape Management
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Medallion Landscape Management provides landscape maintenance, installations, renovations, irrigation, water conservation & design services.
Jurupa Community Services District
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Jurupa Community Services District provides sewer system, water, wastewater treatment, recreation programs and essential community services.
West Basin Municipal Water District
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West Basin Municipal Water District (West Basin) is a wholesale water agency that provides imported drinking water to People.
Bioshaft Water Technology
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BioShafts patented wastewater technology is simple & inspired by how rivers in nature handle the wastewater of plants & animals.
Alameda County Water District
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Alameda County Water District is a water utility company that supplies drinking water to residents of Fremont, Newark and Union City.
APEC Water Systems
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APEC Water Systems manufactures reverse osmosis drinking water filtration systems as well as offers filter and parts replacement services.
South Orange County Wastewater Authority
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South Orange County Wastewater Authority is a protector of the ocean and natural environments that also collect, treat and reuse wastewater.
Basin Water
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Basin Water is a water treatment company, whose expertise is in ion-exchange. Working together, this mix of experienced and visionary
Rainbow Municipal Water District
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Rainbow Municipal Water District provides distribution of safe drinking water and wastewater services to the areas.
FALLBROOK PUBLIC UTILITY DISTRICT
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FALLBROOK is a Public utility company.
SkyH2O
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SkyH2O is industrial-grade water generating systems and independent water providers.
Aquatech Water Systems Inc
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We are providing reverse osmosis (ro) drinking water filter installation & purification service to enable people improve health & wellbeing.
HydroLogic Purification Systems
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HydroLogic Purification Systems specializes in water purification products & technologies for residential and commercial applications.
Central California Irrigation District
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Central California Irrigation District makes extensive investments into conservation programs such as automation, canal lining.
Clean Water Store
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Clean Water Store retails products for the purification & treatment of well water and city water along with other technical resources.
Fluid Resource Management
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Fluid Resource Management provides small water and wastewater systems, operation and maintenance services.
BioCleaner
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Biocleaner offers biological water treatment systems for residential, commercial, agriculture, industrial and municipal sectors.
Long Beach Water Department
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Long Beach Water Department provides reliable drinking water supply and wastewater collection services with a focus on sustainability.
Napa Sanitation District
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Napa Sanitation District provides wastewater collection, treatment and distribution services.
CCWD
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CCWD expertise in drinking-water treatment technology and source water protection along with water services for irrigation and industry.
St. Mary’s County Metropolitan Commission
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St. Mary’s County Metropolitan Commission specializes in potable water distribution and wastewater treatment.
Caltest Analytical Laboratory
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Caltest Analytical Laboratory is an environmental analytical chemistry lab focusing on analyses of regulated pollutants in the water.
Smart Water Group
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Smart Water Group innovates across water treatment and reusing areas through Israeli technology.
Nexgen Utility Management
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Nexgen Utility Management offers innovative solutions and cost-effective projects to all water related needs.
Arrowhead Mountain Spring Water
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Arrowhead Mountain Spring Water sources its water from naturally occurring mountain springs in California, Colorado.
Moulton Niguel Water District
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Moulton Niguel Water District provides quality drinking, recycled and waste water services with an open, honest, and transparent approach.
Eastern Tule GSA
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Eastern Tule GSA is a local government agency that engaged in the development and implementation of the groundwater sustainability plan.
Las Gallinas Valley Sanitary District
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Las Gallinas Valley Sanitary District is an environmental organization that offers wastewater, sewage and garbage treatment plant services.
Aquatech Consultancy
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Aquatech Consultancy offers expertise in construction, waterproofing design, installation, architecture, engineering and litigation areas.
CG Roxane
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CG Roxane is a water distribution company that provides natural spring water.
One Water Systems
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One Water Systems provides filtration and hard water softening systems.
W. M. Lyles
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W. M. Lyles specializes in pipeline and gas distribution, renewable energy, wastewater treatment, irrigation and sanitary sewer services.
Union Sanitary District
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Union Sanitary District is a government office that provides waste-water collection, treatment, and disposal services.
Santa Fe Irrigation District
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Santa Fe Irrigation District provides water service.
PristineHydro
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PristineHydro offers water filtration and revival system solutions.
Spiral Water Technologies
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Spiral Water Technologies specializing in advanced filtration solutions for difficult-to-treat waters.
Spray Chem
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Spray Chem does food processing sanitation, industrial water treatment, industrial metal finishing, and industrial manufacturing.
