Company lists · Data refreshed November 2026

Top 16 Greywater system builders based in the United States

RevenueBase identified 30 company matches for greywater system builders associated with the United States as of November 2026 and tracks 125 professional contacts across them, including 47 with verified work emails. San Francisco is the largest hub.

This list covers company matches for greywater system builders associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
30Companies
125Contacts tracked
47Verified emails
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The 16 largest greywater system builders based in the United States

Ranked by team size
Top 16 of 30 company matches for greywater system builders based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchCincinnati, OH, United StatesHQ recorded Nov 6, 202611-5019 contacts →

Exact match

“At Streamkey Inc, we specialize in custom engineered water and wastewater systems for a variety of commercial and residential applications.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchAustin, TX, United StatesHQ recorded Nov 6, 202611-5018 contacts →

Exact match

“Innovative Water Solutions LLC is a full-service water conservation system design / build company that specializes in integrated water demand and supply management for residential…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchHinsdale, IL, United StatesHQ recorded Nov 6, 20261-1010 contacts →

Exact match

“At Water Harvesting Solutions (Wahaso), we are a team that brings experience, skill and passion about water conservation to every client project.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchHampton, NH, United StatesHQ recorded Nov 6, 202611-507 contacts →

Exact match

“Water Treatment Solutions custom designs and installs patented and patent pending water filtration and recycling systems developed for the varied water needs of the stone, glass…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchMiami Beach, FL, United StatesHQ recorded Nov 6, 20261-106 contacts →

Exact match

“In collaboration with engineers, architects, and developers, we are building a more secure world by helping communities achieve water resilience, where potable water is protected.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchLos Angeles, CA, United StatesHQ recorded Nov 6, 20261-104 contacts →

Exact match

“Greywater Corps is the only company in the Los Angeles area specializing in water resiliency.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchSan Jose, CA, United StatesHQ recorded Nov 6, 202611-504 contacts →

Exact match

“Bay Maples Wild California Gardens was created to address the divide between California’s ongoing water needs and the human desire to live in harmony with a well-maintained and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchMeridian, ID, United StatesHQ recorded Nov 6, 20261-103 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchCharlottesville, VA, United StatesHQ recorded Nov 6, 202611-503 contacts →

Exact match

“Commonwealth H2O – Blue Ridge is a full service water conservation and conditioning company.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchMountain View, CA, United StatesHQ recorded Nov 6, 20261-103 contacts →

Exact match

“Our mission is to preserve the world's water for future generations and protect our customers from rising water costs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchSan Diego, CA, United StatesHQ recorded Nov 6, 20261-103 contacts →

Exact match

“At CatchingH2O, we help homeowners, businesses, and organizations create smarter, more resilient water systems through rainwater harvesting and greywater reuse.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchSan Jose, CA, United StatesHQ recorded Nov 6, 202611-502 contacts →

Exact match

“A Sustainable Landscaping Cooperative set out to help the Santa Clara County conserve its precious resources by saving on water, energy & maintenance costs.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchLawrence, MA, United StatesHQ recorded Nov 6, 20261-102 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchSan Francisco, CA, United StatesHQ recorded Nov 6, 202611-501 contacts →

Exact match

“A permaculture based landscaping company specializing in food production and greywater services - proudly serving San Francisco Bay Area”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchCedar Crest, NM, United StatesHQ recorded Nov 6, 20261-101 contacts →

Exact match

“Cactus Rain LLC helps people throughout New Mexico reduce water consumption, harvest rainwater, and reuse greywater in inspired ways.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchSt. Louis, MD, United StatesHQ recorded Nov 6, 20261-101 contacts →

Exact match

“Laero is a design studio specializing in clean, innovative building technologies.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 16 of 30 greywater system builders based in the United States

See the full list, filter by size, metro and specialty, and access 47 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Greywater system builders based in the United States at a glance

As of Nov 6, 2026
37.6%Verified-email coverage
4.2Average contacts per company
1-10Median size (employees)
6.7%Largest-city concentration · San Francisco
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
22
11-50
7
51-200
1

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 30 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “greywater system builders” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 47 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “greywater system builders”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many greywater system builders are there based in the United States?

RevenueBase identified 30 company matches for greywater system builders associated with the United States as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Streamkey INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most greywater system builders?

San Francisco leads with 2 company records, followed by San Jose (2) and Austin (1).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 47 professional contacts with verified work emails tracked across these 30 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.