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Companies using SWMM

We found 3,598 companies that use SWMM. 1,119 of them name it in their own job posts, and the rest through employees' public profiles. Its share of job posts held steady in the three months to August 2026; 2,113 job posts named it from October 2025 to August 2026. Water Resources Engineer is the role that names it most often.

Data as of November 9, 2026 · Markdown version

Which companies name SWMM in the most job posts?

AECOM, WSP and Kimley-Horn mention SWMM in the most job posts. All five companies are in Professional Services.
Company Posts People Recent job post
AECOM Professional Services · first seen Jul 2022 585 71 "Advanced proficiency in CAD software (AutoCAD or equivalent) and hydraulic modeling software (HEC-HMS, SWMM, or similar)"Senior Engineer - Stormwater, Oct 21, 2026
WSP Professional Services · first seen Jul 2022 454 43 "Hydrologic and hydraulic modeling (HEC-RAS, ICPR/StormWise, SWMM)"Deputy Project Manager – Water Resources / Site Civil Engineer, Oct 22, 2026
Kimley-Horn Professional Services · first seen Sep 2022 369 24 "Experience with Microstation/OpenRoads, AutoCAD, ArcGIS, HydroCAD, SWMM, HEC-RAS, HEC-HMS, StormCAD, and other related hydrologic/hydraulic analysis and roadway design software"Water Resources Engineer, Nov 7, 2026
Geosyntec Consultants Professional Services · first seen Sep 2022 340 17 "Experience with hydrologic/hydraulic modeling and GIS tools such as EPA-SWMM, HydroCAD, HEC-HMS, HEC-RAS, and/or ArcGIS."Experienced Civil / Water Resources Engineer, Nov 1, 2026
CDM Smith Professional Services · first seen Sep 2022 301 29 "Use tools such as ArcGIS, HEC-RAS, SWMM, CADD, Excel, and other engineering software to support project design and analysis."Junior Environmental Engineer - Water Services, Nov 7, 2026
Showing 1 to 5 of 1,119 companies with job posts Sign up to see all companies using SWMM ›

What else do we know about SWMM?

Is hiring for SWMM growing?

Since late 2025, job posts mentioning SWMM went from 0.97 to 1.1 in every 10,000 job posts, and the last three months were flat.
Share of job posts naming SWMM by month, October 2025 to August 2026, in job posts in every 10,000 Moves from 0.96 in October 2025 to 1.1 in August 2026, in job posts in every 10,000. 1.4 1.1 0.71 0.35 0 1.1 Oct '25 Nov Dec Jan '26 Feb Mar Apr May Jun Jul Aug
Show the data
MonthJob posts naming SWMMAll job postsPer 10,000
Oct 20251361,413,6730.96
Nov 20251641,822,1190.90
Dec 20251361,236,1031.1
Jan 20262211,828,0021.2
Feb 20262271,856,6471.2
Mar 20261931,850,7111.0
Apr 20262131,728,8861.2
May 20262001,821,5091.1
Jun 20262081,909,4961.1
Jul 20262081,815,1801.1
Aug 20262071,835,6981.1

How many companies named SWMM in a job post for the first time in recent months?

In the three months to August 2026, 58 companies posted about SWMM for the first time. From March to May, 70 did. The 58 from June to August are 5.2% of all 1,119 companies whose job posts name it.
March to May 2026 70
June to August 2026 58
October 2025 to August 2026 208

Companies whose first job post naming it appeared in that period. Recruiters, staffing firms and job boards are left out.

How do we know which companies use SWMM?

Most of these companies come from employees' profiles: 69% have no job post naming SWMM. 1,119 name it in their own job posts.
How we know Companies Share
Job posts name SWMM
1,119 31%
Employees' profiles list SWMM
2,479 69%

3,598 companies. Each is counted once, under the strongest evidence we have for it.

What size are the companies that use SWMM?

45% of SWMM users are companies with 50 to 999 employees, the largest size group. The second-largest group is companies with fewer than 50 employees, at 25%.

Share of its companies Typical tech page

ShareTypical
Under 50 employees
25% 22%
50 to 999
45% 38%
1,000 to 5,000
17% 17%
Over 5,000
13% 23%

Where are SWMM companies based?

Italy is 5.3 times as common among SWMM companies as on the typical tech page, at 7.8%. The United States leads overall with 38%. India is less common than usual, at 3% against 6.9% on the typical tech page.
ShareTypical
United States
38% 43%
Spain
8.1% 1.8%
Canada
8% 3.6%
Italy
7.8% 1.5%
France
4.1% 4.6%
India
3% 6.9%

Companies in 94 countries and territories. Shares are of companies with a known headquarters country.

Show the data
CountryCompaniesShareTypical tech page
United States1,30638%43%
Spain2818.1%1.8%
Canada2778%3.6%
Italy2697.8%1.5%
France1424.1%4.6%
India1033%6.9%

Which teams work with SWMM?

At 67 companies, the team named in SWMM job posts is water resources, at least twice the next. Water and civil engineering teams come next, at 21 and 18 companies.
Team Companies
Water resources
67
Water
21
Civil engineering
18
Engineering
17
Transportation
16
Infrastructure
13

What else do SWMM companies use?

Compared with companies of the same size, SWMM companies stand out for using XPSWMM and TR-55. SRH-2D comes third, 185 times as common as usual, at 6.8%.

Share of the 923 SWMM companies counted here whose job posts also name the tool Typical for companies the same size

Tool Also name it Typical Times as common
XPSWMM 119 companies
13% 0.07% 195x
TR-55 63 companies
6.8% 0.04% 185x
SRH-2D 63 companies
6.8% 0.04% 185x
StormCAD 174 companies
19% 0.11% 173x
Tool Also name it Typical Times as common
FLO-2D 68 companies
7.4% 0.04% 167x
SewerCAD 75 companies
8.1% 0.05% 161x
HEC-HMS 493 companies
53% 0.33% 161x
PondPack 54 companies
5.9% 0.04% 155x

Which companies started naming SWMM in job posts recently?

Between April and August 2026, 51 companies with 50 or more employees first named SWMM in a job post, 9 of them with more than 5,000 employees.
AI native any size · 1 new
Company Posts
SpaceXAI 1
Commercial 50 to 999 employees · 37 new
Company Posts
AAA Life Insurance Company 5
IBTS - Institute for Building Technology and Safety 5
gbc engineers 5
Egis in ANZ 3
Assystem in India 3
Mid-market 1,000 to 5,000 employees · 5 new
Company Posts
GFT 1
UM6P - University Mohammed VI Polytechnic 1
IPS-Mehtalia Pvt. Ltd 1
Zutari 1
Metro Vancouver 1
Enterprise over 5,000 employees · 9 new
Company Posts
US Army Corps of Engineers 2
Technip Energies 2
City of Calgary 2
American Electric Power 2
Larsen & Toubro 1

Companies that named SWMM in a job post for the first time between April and August 2026, ranked by their job posts in those months. AI-native companies get a group of their own, whatever their size. Recruiters and job boards are left out.

Which roles mention SWMM most?

Water Resources Engineer roles make up 42% of the job posts that name SWMM. The top four roles cover 69% of these job posts.
Role Share Posts
Water Resources Engineer
42% 882
Civil Engineer
14% 300
Skilled Trades
7.1% 149
Program Manager
5.8% 123
Environmental Engineer
3.2% 68
Engineer
3.1% 66
Show the data
RoleShareOct 2025 to Aug 2026Mar to May 2026Jun to Aug 2026
Water Resources Engineer42%882234256
Civil Engineer14%3008279
Skilled Trades7.1%1494644
Program Manager5.8%1234230
Environmental Engineer3.2%681421
Engineer3.1%662212
About this data

Sumble built this page. Sumble gives sales, marketing and other GTM teams technographics and hiring signals for the companies they sell to: the technologies each company uses, which teams are hiring and for what, and who reports to whom. That helps a team know who to contact, why now, and what to say.

Sumble covers more than 3.6 million companies, 93 million job posts collected since 2022 and 194 million employee profiles, and tracks more than 37,000 technologies. It finds which technologies a company uses by reading its job posts and its employees' public profiles.

Sumble has a free plan, and the same data is available through its API and MCP server.

A company counts when its own job posts or its employees' public profiles name the technology. Hiring is that technology's share of all job posts collected each month. Quotes are copied word for word from the companies' job posts.

Every figure on this page comes from Sumble's own analysis, and you won't find it outside Sumble.