Company lists · Data refreshed September 2026

Top 19 Water infrastructure engineering firms based in San Diego, United States

Name: Water infrastructure engineering firms based in San Diego, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 27 companies tracked

RevenueBase identified 27 company matches for water infrastructure engineering firms associated with San Diego, United States as of September 2026 and tracks 3,300 professional contacts across them, including 1,837 with verified work emails. Across the United States, Houston is the largest hub for this category (139 companies); San Diego has 27.

This list covers company matches for water infrastructure engineering firms associated with San Diego, 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 September 19, 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 Sep 19, 2026 How this list was built

27Companies

3,300Contacts tracked

1,837Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 19 largest water infrastructure engineering firms based in San Diego, United States

Ranked by team size

Top 19 of 27 company matches for water infrastructure engineering firms based in San Diego, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Kleinfelder	Exact match	San Diego, CA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	2,344 contacts →
	Exact match “At Kleinfelder, we have been connecting great people to the best work since 1961.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2	RICK	Exact match	San Diego, CA, United StatesHQ recorded Sep 19, 2026	201-500	446 contacts →
	Exact match “RICK is an award-winning planning, design, and engineering firm.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3	Underground Solutions	Exact match	San Diego, CA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	101 contacts →
	Exact match “Underground Solutions, Inc- an Azuria Water Solutions company - delivers leading pipeline solutions for water, sewer, and underground conduit and casing for HDD and duct bank…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4	MA Engineers, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 19, 2026	51-200	94 contacts →
	Exact match “MA Engineers delivers innovative, sustainable, energy-saving design solutions.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5	West Consultants, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 19, 2026	51-200	84 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6	Project Design Consultants, A Bowman Company	Exact match	San Diego, CA, United StatesHQ recorded Sep 19, 2026	51-200	52 contacts →
	Exact match “As of July 18, 2022, Project Design Consultants has joined team Bowman.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7	Paradigm An Ulteig Company	Exact match	San Diego, CA, United StatesHQ recorded Sep 19, 2026	11-50	31 contacts →
	Exact match “Ulteig- formerly Paradigm Environmetal - helps our clients protect and enhance the critical environmental, recreational and economic functions water systems provide to communities.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8	WHB Engineers	Exact match	San Diego, CA, United StatesHQ recorded Sep 19, 2026	51-200	22 contacts →
	Exact match “WHB Engineers is a leading engineering and construction management firm working on our country’s most important infrastructure.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9	West Coast Civil, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 19, 2026	11-50	21 contacts →
	Exact match “WEST COAST CIVIL (WCC) is an emerging disadvantaged civil engineering firm in Southern California.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	River Focus, Inc. Certified DBE Firm	Exact match	San Diego, CA, United StatesHQ recorded Sep 19, 2026	1-10	14 contacts →
	Exact match “River Focus is a minority-owned small business firm specializing in FEMA map revisions, hydraulic modeling, hydrology, 2-D floodplain studies, bridge scour, streambank protection…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11	T3 Consulting, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 19, 2026	11-50	12 contacts →
	Exact match “T3 Consulting, Inc.(T3) is a professional services firm that provides exceptional technical solutions focused on value-led service, quality, and dependability.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12	PAL General Engineering	Exact match	San Diego, CA, United StatesHQ recorded Sep 19, 2026	11-50	11 contacts →
	Exact match “PAL General Engineering is a construction company whose principal contracting business is in connection with fixed works requiring specialized engineering knowledge and skill…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13	Enviroapplications, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 19, 2026	11-50	9 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	Blue Lake Civil	Exact match	San Diego, CA, United StatesHQ recorded Sep 19, 2026	1-10	9 contacts →
	Exact match “Blue Lake Civil is a San Diego based engineering consulting firm founded by Maggie Witt and Tim Monroe.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15	Nova Engineering, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 19, 2026	11-50	8 contacts →
	Exact match “NOVA Engineering provides civil engineering, survey, planning, and stormwater services.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16	RT Engineering & Associates INC Rtea	Exact match	San Diego, CA, United StatesHQ recorded Sep 19, 2026	1-10	8 contacts →
	Exact match “RT ENGINEERING & ASSOCIATES, INC -(SBE/DBE/MBE/WBE/WOSB/SLBE/ELBE) In 2011, RT Engineering & Associates, Inc.(RTEA) was founded in the state of California as an S-Corporation by…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17	Proteus Consulting	Exact match	San Diego, CA, United StatesHQ recorded Sep 19, 2026	1-10	2 contacts →
	Exact match “PROTEUS Consulting is a boutique professional services consulting firm for the Water sector, specializing in engineering and management consulting.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18	Watermark Resource Development, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 19, 2026	1-10	1 contacts →
	Exact match “WaterMark Resource Development, Inc.is a specialized project development and finance company that builds, acquires, owns, operates, and finances water infrastructure assets, with…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19	Rosenex	Exact match	San Diego, CA, United StatesHQ recorded Sep 19, 2026	1-10	1 contacts →
	Exact match “ROSENEX founded in 2024 based in San Diego, California.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “water infrastructure engineering firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 19 of 27 water infrastructure engineering firms based in San Diego, United States

See the full list, filter by size, metro and specialty, and access 1,837 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Water infrastructure engineering firms based in San Diego, United States at a glance

As of Sep 19, 2026

55.7%Verified-email coverage

122.2Average contacts per company

11-50Median size (employees)

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for San Diego, so it is reported there. Company counts and contact totals on this page are exact for San Diego, over 27 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 San Diego, United States whose business descriptions match “water infrastructure engineering firms” 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 1,837 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 September 19, 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.

Water infrastructure engineering firms by metro in the United States

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 “water infrastructure engineering firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many water infrastructure engineering firms are there based in San Diego, United States?

RevenueBase identified 27 company matches for water infrastructure engineering firms associated with San Diego, United States as of September 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?

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

Which city in the United States has the most water infrastructure engineering firms?

Houston leads the United States with 139 company records, followed by Austin (59) and New York (58). San Diego has 27.

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 1,837 professional contacts with verified work emails tracked across these 27 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 September 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 27 water infrastructure engineering firms based in San Diego, United States. Start with a free account, no credit card.

Download this list →

Related lists

Water infrastructure engineering firms by geography

Browse the directory

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.