Company lists · Data refreshed September 2026

Top 25 Rainwater harvesting system construction companies worldwide

Name: Rainwater harvesting system construction companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 71 companies tracked

RevenueBase identified 71 rainwater harvesting system construction companies worldwide as of September 2026 and tracks 456 professional contacts across them, including 171 with verified work emails and 0 with mobile numbers. The United States is the largest market and Austin the largest hub.

This list covers rainwater harvesting system construction companies worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026. Country and city lists for rainwater harvesting system construction companies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

71Companies

456Contacts tracked

171Verified emails

0Mobile numbers

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The 25 largest rainwater harvesting system construction companies worldwide

Ranked by team size

Top 25 of 71 rainwater harvesting system construction companies worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to rainwater harvesting system construction companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Stormsaver LTD	Strong evidence	Kirklington, United KingdomHQ checked Sep 17, 2026	11-50	44 contacts →
	Strong evidence “The UK's market leading suppliers of Rainwater Harvesting, Greywater Recycling, and Water Reuse Systems.” Source: RevenueBase Database · checked Sep 17, 2026
2	Graf UK LTD	Strong evidence	Banbury, United KingdomHQ checked Sep 17, 2026	51-200	43 contacts →
	Strong evidence “Graf UK Ltd was formed following the acquisition of SCP Water Management Ltd by Graf GmbH, the European market leaders in rainwater harvesting.” Source: RevenueBase Database · checked Sep 17, 2026
3	Incon-Trol Water Systems	Partial evidence	Mckinney, TX, United StatesHQ checked Sep 17, 2026	51-200	25 contacts →
	Partial evidence “inCon-trol Water Systems partners with designers, engineers, and builders to deliver smart, reliable water systems-including fountains, water features, pump systems, water…” Source: RevenueBase Database · checked Sep 17, 2026
4	Rainharvest Systems	Strong evidence	Cumming, GA, United StatesHQ checked Sep 17, 2026	11-50	19 contacts →
	Strong evidence “RainHarvest Systems is your comprehensive resource for residential and commercial water harvesting, treatment and reuse products and systems.” Source: RevenueBase Database · checked Sep 17, 2026
5	Streamkey INC	Partial evidence	Cincinnati, OH, United StatesHQ checked Sep 17, 2026	11-50	18 contacts →
	Partial evidence “At Streamkey Inc, we specialize in custom engineered water and wastewater systems for a variety of commercial and residential applications.” Source: RevenueBase Database · checked Sep 17, 2026
6	Rainwater Management Solutions	Strong evidence	Roanoke, VA, United StatesHQ checked Sep 17, 2026	11-50	18 contacts →
	Strong evidence “RMS provides complete rainwater harvesting systems and solutions for residential, commercial, industrial and agricultural projects.” Source: RevenueBase Database · checked Sep 17, 2026
7	Innovative Water Solutions LLC	Partial evidence	Austin, TX, United StatesHQ checked Sep 17, 2026	11-50	16 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
8	Aquality Trading & Consulting LTD	Strong evidence	London, United KingdomHQ checked Sep 17, 2026	11-50	13 contacts →
	Strong evidence “Aquality Trading & Consulting Ltd is one of the longest established and leading suppliers of Rainwater Harvesting and Greywater Recycling systems in the UK and France.” Source: RevenueBase Database · checked Sep 17, 2026
9	Wahaso	Partial evidence	Hinsdale, IL, United StatesHQ checked Sep 17, 2026	1-10	9 contacts →
	Partial evidence “At Water Harvesting Solutions (Wahaso), we are a team that brings experience, skill and passion about water conservation to every client project.” Source: RevenueBase Database · checked Sep 17, 2026
10	Ecovie Water Management	Indirect evidence	Miami Beach, FL, United StatesHQ checked Sep 17, 2026	1-10	7 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 17, 2026
11	Arcsa International	Partial evidence	Mokena, IL, United StatesHQ checked Sep 17, 2026	11-50	6 contacts →
	Partial evidence “The mission of ARCSA International is to provide resources and information on rainwater collection, promote the advancement of rainwater conservation and work with state, county…” Source: RevenueBase Database · checked Sep 17, 2026
12	3p Technik UK Limited	Strong evidence	Cardigan, United KingdomHQ checked Sep 17, 2026	1-10	5 contacts →
	Strong evidence “Stormwater Treatment, Rainwater Harvesting, Garden Tanks & Water Butts, Pump Controllers and Tank Pumps” Source: RevenueBase Database · checked Sep 17, 2026
13	Sudsplanter LTD	Strong evidence	Abergavenny, United KingdomHQ checked Sep 17, 2026	1-10	5 contacts →
	Strong evidence “SuDSPlanter Ltd provide a range of high-quality rainwater planter products and services to reduce the volume of rainwater entering drainage and sewer systems.” Source: RevenueBase Database · checked Sep 17, 2026
14	Greywater Corps	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 17, 2026	1-10	5 contacts →
	Indirect evidence “Greywater Corps is the only company in the Los Angeles area specializing in water resiliency.” Source: RevenueBase Database · checked Sep 17, 2026
15	Rainharvesting Systems LTD	Strong evidence	Stroud, United KingdomHQ checked Sep 17, 2026	1-10	5 contacts →
	Strong evidence “Experience As the longest established rainwater harvesting company in the UK, Rainharvesting Systems has supplied of domestic and commercial systems.” Source: RevenueBase Database · checked Sep 17, 2026
16	Harvest Rain	Strong evidence	Dripping Springs, TX, United StatesHQ checked Sep 17, 2026	1-10	4 contacts →
	Strong evidence “At Harvest Rain, we build rainwater harvesting systems designed to last.” Source: RevenueBase Database · checked Sep 17, 2026
17	Cqure Water	Strong evidence	Austin, TX, United StatesHQ checked Sep 17, 2026	1-10	4 contacts →
	Strong evidence “Cqure Water provides rainwater collection and water storage systems for homes and ranches in Central Texas.” Source: RevenueBase Database · checked Sep 17, 2026
18	Deepleen	Strong evidence	Austin Tx, United StatesHQ checked Sep 17, 2026	11-50	3 contacts →
	Strong evidence “Deepleen Insta Solutions, based in Mangalore, specializes in Rainwater Harvesting Filters & Systems that promote sustainable groundwater recharge.” Source: RevenueBase Database · checked Sep 17, 2026
19	Commonwealth H2o - Blue Ridge	Indirect evidence	Charlottesville, VA, United StatesHQ checked Sep 17, 2026	11-50	3 contacts →
	Indirect evidence “Commonwealth H2O – Blue Ridge is a full service water conservation and conditioning company.” Source: RevenueBase Database · checked Sep 17, 2026
20	Yeoman Rainguard	Strong evidence	Leeds, United KingdomHQ checked Sep 17, 2026	51-200	2 contacts →
	Strong evidence “Yeoman Rainguard has been providing quality rainwater systems for over 30 years.” Source: RevenueBase Database · checked Sep 17, 2026
21	The Rainwater GUY	Strong evidence	Banbury, United KingdomHQ checked Sep 17, 2026	1-10	2 contacts →
	Strong evidence “The Rainwater Guy offers Maintenance, repairs, tank cleans and install of Rainwater Harveting & Wastewater Treatment System across the UK for both domestic and larger commerical…” Source: RevenueBase Database · checked Sep 17, 2026
22	Catchingh2o	Strong evidence	San Diego, CA, United StatesHQ checked Sep 17, 2026	1-10	2 contacts →
	Strong evidence “At CatchingH2O, we help homeowners, businesses, and organizations create smarter, more resilient water systems through rainwater harvesting and greywater reuse.” Source: RevenueBase Database · checked Sep 17, 2026
23	JRH Water Management Limited	Strong evidence	Lincoln, United KingdomHQ checked Sep 17, 2026	1-10	1 contacts →
	Strong evidence “JRH WATER MANAGEMENT LIMITED is a expert in rainwater harvesting - design, supply and install Covering everything from start to finish, JRH pride themselves that they provide a…” Source: RevenueBase Database · checked Sep 17, 2026
24	Flow Rainwater Systems, LLC	Strong evidence	San Marcos, TX, United StatesHQ checked Sep 17, 2026	1-10	1 contacts →
	Strong evidence “FLOW installs turnkey rainwater harvesting systems across Texas.” Source: RevenueBase Database · checked Sep 17, 2026
25	Rain Harvesting Supplies	Indirect evidence	Willow Park, TX, United StatesHQ checked Sep 17, 2026	1-10	1 contacts →
	Indirect evidence “You need it.” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: rainwater harvesting system construction companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names rainwater harvesting system construction companies.
Partial evidence: Its own public description names part of rainwater harvesting system construction companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name rainwater harvesting system construction companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 71 rainwater harvesting system construction companies worldwide

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Rainwater harvesting system construction companies worldwide at a glance

As of Sep 17, 2026

37.5%Verified-email coverage

6.4Average contacts per company

1-10Median size (employees)

4.2%Largest-city concentration · Austin

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among rainwater harvesting system construction companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: 2 countries, largest first: the United States, the United Kingdom. Country and city lists for rainwater harvesting system construction companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “rainwater harvesting system construction companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names rainwater harvesting system construction companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among rainwater harvesting system construction companies, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 171 across the full list. 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 September 17, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Rainwater harvesting system construction companies by location

2 lists · largest first

Every Rainwater harvesting system construction companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names rainwater harvesting system construction companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many rainwater harvesting system construction companies are there worldwide?

RevenueBase identified 71 rainwater harvesting system construction companies worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Stormsaver LTD, headquartered in Worldwide, tops this list with the largest team on record.

Which country has the most rainwater harvesting system construction companies?

The United States leads with 43 companies, followed by the United Kingdom (28). Every rainwater harvesting system construction companies list by country and city is linked on this page.

Which city has the most rainwater harvesting system construction companies?

Austin leads with 3 headquartered companies, followed by Banbury (2) and Cincinnati (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 171 verified decision-maker contacts tracked across these 71 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 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 Smart Search, 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.