Company lists · Data refreshed September 2026

Top 25 Irrigation consulting firms based in the United States

Name: Irrigation consulting firms 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 1,162 companies tracked

RevenueBase identified 1,162 irrigation consulting firms headquartered in the United States as of September 2026 and tracks 11,764 professional contacts across them, including 5,266 with verified work emails. Houston is the largest hub.

This list covers irrigation consulting firms 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

1,162Companies

11,764Contacts tracked

5,266Verified emails

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The 25 largest irrigation consulting firms based in the United States

Ranked by team size

Top 25 of 1,162 irrigation consulting firms 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 irrigation consulting firms: 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	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
2	Baxter & Woodman	Indirect evidence	Crystal Lake, IL, United StatesHQ checked Sep 28, 2026	201-500	385 contacts →
	Indirect evidence “Founded in 1946, Baxter & Woodman, Inc.” Source: RevenueBase Database · checked Sep 28, 2026
3	West Yost	Partial evidence	Davis, CA, United StatesHQ checked Sep 28, 2026	201-500	279 contacts →
	Partial evidence “West Yost is a water-focused consulting engineering firm ranked by Fortune Magazine as one of the “Best Small and Medium Workplaces in Consulting and Professional Services” 2023 -…” Source: RevenueBase Database · checked Sep 28, 2026
4	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
5	Marina Landscape	Indirect evidence	Eight Mile, United StatesHQ checked Sep 28, 2026	501-1,000	208 contacts →
	Indirect 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
6	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
7	Keller Associates, INC	Indirect evidence	Meridian, ID, United StatesHQ checked Sep 28, 2026	201-500	174 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
8	Apex Water And Process	Indirect evidence	St Michael, MN, United StatesHQ checked Sep 28, 2026	201-500	143 contacts →
	Indirect evidence “Apex, a trusted leader in water and process management, delivers integrated solutions that empower agricultural, commercial, and industrial customers across the U.S.” Source: RevenueBase Database · checked Sep 28, 2026
9	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
10	Chen Moore And Associates	Indirect evidence	Fort Lauderdale, FL, United StatesHQ checked Sep 28, 2026	51-200	112 contacts →
	Indirect evidence “Founded in 1986, Chen Moore and Associates (CMA) specializes in civil engineering, water resources, water and sewer, landscape architecture, electrical engineering…” Source: RevenueBase Database · checked Sep 28, 2026
11	Weathermatic	Indirect evidence	Garland, TX, United StatesHQ checked Sep 28, 2026	51-200	112 contacts →
	Indirect evidence “Weathermatic is a leading provider of water-conserving technology and services.” Source: RevenueBase Database · checked Sep 28, 2026
12	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
13	Down To Earth Landscaping, INC	Indirect evidence	Jackson, NJ, United StatesHQ checked Sep 28, 2026	201-500	98 contacts →
	Indirect 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
14	LRE Water A Spheros Environmental Company	Indirect evidence	Denver, CO, United StatesHQ checked Sep 28, 2026	51-200	94 contacts →
	Indirect evidence “LRE Water is now Spheros Environmental.” Source: RevenueBase Database · checked Sep 28, 2026
15	Gupta & Associates INC	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 28, 2026	51-200	92 contacts →
	Indirect evidence “Gupta & Associates, Inc.(GAI) was established in Dallas, Texas in January to provide electrical and instrumentation control services for water treatment and wastewater treatment…” Source: RevenueBase Database · checked Sep 28, 2026
16	Lawn Management Company	Indirect evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	201-500	89 contacts →
	Indirect evidence “LMC was incorporated as a landscape management contractor in April of 1980.” Source: RevenueBase Database · checked Sep 28, 2026
17	Mission Landscape Companies	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	201-500	86 contacts →
	Indirect evidence “Mission Landscape Companies are award winning, and one of the largest integrated professional landscape firms in the United States.” Source: RevenueBase Database · checked Sep 28, 2026
18	West Consultants, INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	51-200	84 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
19	Avidwater	Partial evidence	Fresno, CA, United StatesHQ checked Sep 28, 2026	51-200	83 contacts →
	Partial evidence “We Specialize In Drip/Micro Irrigation, Solid-Set Sprinkler Systems, Filtration, Automated Systems, Controlled Environment Agriculture, Concrete, Electrical And Pump Stations.” Source: RevenueBase Database · checked Sep 28, 2026
20	Larry Walker Associates	Indirect evidence	Davis, CA, United StatesHQ checked Sep 28, 2026	51-200	79 contacts →
	Indirect evidence “Larry Walker Associates (LWA) is a privately owned firm headquartered in Davis, California, with offices in Berkeley, Yreka, Santa Monica, Ventura, San Diego, and Seattle, WA.” Source: RevenueBase Database · checked Sep 28, 2026
21	Alliance Consulting Engineers, INC	Partial evidence	Columbia, SC, United StatesHQ checked Sep 28, 2026	11-50	77 contacts →
	Partial evidence “Professional Civil and Environmental Engineering Firm providing Technical Consulting Services to County Governments, Municipalities, Industry, School Districts, Healthcare…” Source: RevenueBase Database · checked Sep 28, 2026
22	Pierre Landscape Construction	Partial evidence	Irwindale, CA, United StatesHQ checked Sep 28, 2026	51-200	75 contacts →
	Partial evidence “Pierre Landscape is a Landscape Construction and Maintenance company providing irrigation installation, plant installation, lighting installation, erosion control, large tree…” Source: RevenueBase Database · checked Sep 28, 2026
23	Spectrum	Indirect evidence	Geismar, LA, United StatesHQ checked Sep 28, 2026	51-200	69 contacts →
	Indirect evidence “At Spectrum, our mission is simple: to provide smarter, more efficient, and sustainable water solutions.” Source: RevenueBase Database · checked Sep 28, 2026
24	Schumacher Companies	Indirect evidence	West Bridgewater, MA, United StatesHQ checked Sep 28, 2026	201-500	66 contacts →
	Indirect evidence “SCHUMACHER Companies is an exclusive landscaping firm serving residential, commercial, and institutional clients throughout New England.” Source: RevenueBase Database · checked Sep 28, 2026
25	Yellowstone Landscape Southwest Region	Indirect evidence	Albuquerque, NM, United StatesHQ checked Sep 28, 2026	201-500	66 contacts →
	Indirect evidence “The people of Yellowstone have designed and built much of the central New Mexico landscape since 1973.” 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: irrigation consulting firms. 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 irrigation consulting firms.
Partial evidence: Its own public description names part of irrigation consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name irrigation consulting firms. 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 1,162 irrigation consulting firms based in the United States

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Irrigation consulting firms based in the United States at a glance

As of Sep 28, 2026

44.8%Verified-email coverage

10.1Average contacts per company

1-10Median size (employees)

1.5%Largest-city concentration · Houston

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

697

11-50

338

51-200

201-500

501-1,000

1,001-5,000

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 1,162 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 irrigation consulting firms, 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 “irrigation consulting firms”. 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 irrigation consulting firms), 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 irrigation consulting firms, 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, 5,266 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.

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 irrigation consulting firms, 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 irrigation consulting firms are there based in the United States?

RevenueBase identified 1,162 irrigation consulting firms 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?

Hazen And Sawyer, headquartered in New York, tops this list with the largest team on record.

Which city has the most irrigation consulting firms?

Houston leads with 18 headquartered companies, followed by Dallas (15) and Austin (14).

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 5,266 verified decision-maker contacts tracked across these 1,162 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.