Company lists · Data refreshed September 2026

Top 25 Landscape water management consultants based in the United States

Name: Landscape water management consultants based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 2,015 companies tracked

RevenueBase identified 2,015 landscape water management consultants headquartered in the United States as of September 2026 and tracks 31,860 professional contacts across them, including 13,295 with verified work emails. Houston is the largest hub.

This list covers landscape water management consultants headquartered in the United States, 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 28, 2026.

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 28, 2026 86% judged on-target in blind review

2,015Companies

31,860Contacts tracked

13,295Verified emails

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The 25 largest landscape water management consultants based in the United States

Ranked by team size

Top 25 of 2,015 landscape water management consultants based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to landscape water management consultants: 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	Tetra Tech	Partial evidence	Pasadena, CA, United StatesHQ checked Sep 28, 2026	10001+	12,999 contacts →
	Partial evidence “Tetra Tech is the leader in water, environment and sustainable infrastructure, providing high-end technical and engineering services for projects worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
2	Hazen And Sawyer	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,100 contacts →
	Indirect evidence “As Hazen marks 75 years, we celebrate a legacy of absolute commitment to our clients while delivering the best technical work available anywhere.” Source: RevenueBase Database · checked Sep 28, 2026
3	P2s	Indirect evidence	Long Beach, CA, United StatesHQ checked Sep 28, 2026	201-500	375 contacts →
	Indirect evidence “P2S has brought forward-thinking, sustainable engineering solutions to California, the Pacific Northwest, and beyond, for over 30 years.” Source: RevenueBase Database · checked Sep 28, 2026
4	Environmental Consulting & Technology, Inc. ECT	Partial evidence	Gainesville, FL, United StatesHQ checked Sep 28, 2026	201-500	305 contacts →
	Partial evidence “Environmental Consulting & Technology, Inc.(ECT) is a multi-disciplinary environmental and sustainability consulting firm delivering strategy, permitting, design, and management…” Source: RevenueBase Database · checked Sep 28, 2026
5	Down To Earth Landscape & Irrigation	Partial evidence	Maitland, FL, United StatesHQ checked Sep 28, 2026	1,001-5,000	235 contacts →
	Partial evidence “Down To Earth Landscape & Irrigation specializes in large-scale commercial, residential, and resort services for lawns, landscapes, and golf courses.” Source: RevenueBase Database · checked Sep 28, 2026
6	Clean Scapes	Partial evidence	Austin, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	226 contacts →
	Partial evidence “Clean Scapes Landscaping provides full-service commercial landscaping, specializing in the construction and maintenance of softscape, hardscape, and irrigation.” Source: RevenueBase Database · checked Sep 28, 2026
7	Marina Landscape	Partial evidence	Eight Mile, United StatesHQ checked Sep 28, 2026	501-1,000	208 contacts →
	Partial evidence “Marina Landscape is one of the most acclaimed and successful landscape contractors in the United States today, providing state-of-the-art commercial landscaping services to both…” Source: RevenueBase Database · checked Sep 28, 2026
8	Monarch Landscape Companies	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	204 contacts →
	Partial evidence “The name Monarch Landscape Companies may be new, but its tradition and commitment to successful landscaping outcomes is time-honored.” Source: RevenueBase Database · checked Sep 28, 2026
9	Mariani Landscape	Partial evidence	Lake Bluff, IL, United StatesHQ checked Sep 28, 2026	1,001-5,000	196 contacts →
	Partial evidence “For more than 60 years, Mariani Landscape has been the trusted market leader in the residential landscape industry, and has earned a reputation for designing, constructing…” Source: RevenueBase Database · checked Sep 28, 2026
10	Wra, INC	Partial evidence	San Rafael, CA, United StatesHQ checked Sep 28, 2026	51-200	183 contacts →
	Partial evidence “WRA is an environmental consultancy that’s making a net positive impact.” Source: RevenueBase Database · checked Sep 28, 2026
11	Maldonado Nursery & Landscaping INC	Partial evidence	San Antonio, TX, United StatesHQ checked Sep 28, 2026	501-1,000	179 contacts →
	Partial evidence “With over 40 years of experience, Maldonado Nursery and Landscaping is one of the largest privately owned landscape and irrigation contractors in the state of Texas.” Source: RevenueBase Database · checked Sep 28, 2026
12	Mackay Sposito	Partial evidence	Vancouver, WA, United StatesHQ checked Sep 28, 2026	51-200	166 contacts →
	Partial evidence “We’re consultants in energy, public works and land development, and we’re an array of technical disciplines.” Source: RevenueBase Database · checked Sep 28, 2026
13	AAA Landscape	Partial evidence	Phoenix, AZ, United StatesHQ checked Sep 28, 2026	501-1,000	161 contacts →
	Partial evidence “Landscape, an Underwood Brothers Company, is a company that specializes in providing commercial landscaping services.” Source: RevenueBase Database · checked Sep 28, 2026
14	The Bruce Company Of Wi, INC	Partial evidence	Middleton, WI, United StatesHQ checked Sep 28, 2026	201-500	145 contacts →
	Partial evidence “The Bruce Company provides landscape products and landscape services for both residential and commercial clients.” Source: RevenueBase Database · checked Sep 28, 2026
15	Aqualis	Strong evidence	Morrisville, NC, United StatesHQ checked Sep 28, 2026	501-1,000	136 contacts →
	Strong evidence “AQUALIS is the national leader in water management, compliance and engineering, helping businesses meet complex water regulations while protecting long-term infrastructure.” Source: RevenueBase Database · checked Sep 28, 2026
16	R. P. Marzilli & Company, INC	Indirect evidence	Medway, MA, United StatesHQ checked Sep 28, 2026	51-200	130 contacts →
	Indirect evidence “R.” Source: RevenueBase Database · checked Sep 28, 2026
17	David J. Frank Landscape Contracting	Indirect evidence	Germantown, WI, United StatesHQ checked Sep 28, 2026	201-500	130 contacts →
	Indirect evidence “David J.” Source: RevenueBase Database · checked Sep 28, 2026
18	CMS Environmental Solutions	Strong evidence	Greenwood Village, CO, United StatesHQ checked Sep 28, 2026	51-200	126 contacts →
	Strong evidence “CMS Environmental Solutions is a stormwater compliance consultant providing NOI permitting, development, dewatering planning, site inspections, and custom stormwater management…” Source: RevenueBase Database · checked Sep 28, 2026
19	Montgomery & Associates	Partial evidence	Tucson, AZ, United StatesHQ checked Sep 28, 2026	51-200	126 contacts →
	Partial evidence “M&A is a water resource consulting firm that partners with clients to address their evolving water resource challenges.” Source: RevenueBase Database · checked Sep 28, 2026
20	O'connell Landscape Maintenance	Partial evidence	Rancho Santa Margarita, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	114 contacts →
	Partial evidence “Maintaining the Beauty and Function of the Urban Landscape" Starting with $60 and a borrowed truck, George O’Connell and his brother Michael established O’Connell Landscape…” Source: RevenueBase Database · checked Sep 28, 2026
21	Taylor Engineering	Indirect evidence	Jacksonville, FL, United StatesHQ checked Sep 28, 2026	51-200	105 contacts →
	Indirect evidence “Since 1987, Taylor Engineering, Inc, with headquarters in Jacksonville, Florida; branch offices in Destin and Tampa, Florida; and regional staff throughout Florida and the North…” Source: RevenueBase Database · checked Sep 28, 2026
22	Gachina Landscape Management	Indirect evidence	Menlo Park, CA, United StatesHQ checked Sep 28, 2026	201-500	100 contacts →
	Indirect evidence “Gachina is a family-owned, women-owned and minority-owned business.” Source: RevenueBase Database · checked Sep 28, 2026
23	Level Green Landscaping	Indirect evidence	Upper Marlboro, MD, United StatesHQ checked Sep 28, 2026	201-500	99 contacts →
	Indirect evidence “Trees, plants and hardscapes play a vital role in beautifying your property.” Source: RevenueBase Database · checked Sep 28, 2026
24	Aqua DOC Lake & Pond Management, INC	Indirect evidence	Chardon, OH, United StatesHQ checked Sep 28, 2026	51-200	98 contacts →
	Indirect evidence “AQUA DOC's Mission: A winning team, striving for excellence in environmental stewardship and sustainability.” Source: RevenueBase Database · checked Sep 28, 2026
25	Down To Earth Landscaping, INC	Partial evidence	Jackson, NJ, United StatesHQ checked Sep 28, 2026	201-500	98 contacts →
	Partial evidence “Down To Earth Landscaping has been providing high quality landscape services to New Jersey, DC, Pennsylvania, Maryland and Virginia since 1986.” Source: RevenueBase Database · checked Sep 28, 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: landscape water management consultants. 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 landscape water management consultants.
Partial evidence: Its own public description names part of landscape water management consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name landscape water management consultants. 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 2,015 landscape water management consultants based in the United States

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Landscape water management consultants based in the United States at a glance

As of Sep 28, 2026

41.7%Verified-email coverage

15.8Average contacts per company

1-10Median size (employees)

1.5%Largest-city concentration · Houston

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

1,190

11-50

571

51-200

186

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 2,015 companies.

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 landscape water management consultants, 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “landscape water management consultants”. 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 landscape water management consultants), 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 landscape water management consultants, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
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, 13,295 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 28, 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.

Landscape water management consultants by metro

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 landscape water management consultants, 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 landscape water management consultants are there based in the United States?

RevenueBase identified 2,015 landscape water management consultants headquartered in the United States 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?

Tetra Tech, headquartered in Pasadena, tops this list with the largest team on record.

Which city has the most landscape water management consultants?

Houston leads with 31 headquartered companies, followed by Portland (26) and Austin (23).

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 13,295 verified decision-maker contacts tracked across these 2,015 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 28, 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.