Shipvane · 4 AE roles
Marco E. · joined Cargolio
Fleetora · first roles in DEEPA SWMM VS HEC-HMS_
As of 4 November 2026, HEC-HMS is named by 233 companies and EPA SWMM by 182; EPA SWMM skews to companies under 200 people (37% vs 31%), HEC-HMS to companies over 1,000 (34% vs 35%).
As of 4 November 2026 · refreshed daily · counts move as websites, DNS and career sites are re-read.
The website-and-DNS footprint is not comparable between a marketing suite and a CRM: EPA SWMM's script and mail records show on hundreds of thousands of small sites, HEC-HMS rarely leaves a trace outside its own apps. Compare on the job-posting numbers; use the footprint for reach.
- EPA SWMM: 2–200 employees
- 37%
- HEC-HMS: 2–200 employees
- 31%
- EPA SWMM: 1,000+ employees
- 35%
- HEC-HMS: 1,000+ employees
- 34%
- Postings per company, 90 days
- 2.9 · 2.9
- Website or DNS footprint
- 0 · 0
Who chooses which
Share of each tool's companies in every segment. "Leans" marks a gap of more than two points.
| Segment | EPA SWMM | share | HEC-HMS | share | Leans |
|---|---|---|---|---|---|
| Self-employed | 1 | 1% | 2 | 1% | even |
| 2-10 employees | 9 | 5% | 13 | 6% | even |
| 11-50 employees | 18 | 10% | 18 | 8% | EPA SWMM |
| 51-200 employees | 41 | 23% | 42 | 18% | EPA SWMM |
| 201-500 employees | 30 | 16% | 42 | 18% | even |
| 501-1000 employees | 19 | 10% | 36 | 15% | HEC-HMS |
| 1001-5000 employees | 36 | 20% | 52 | 22% | HEC-HMS |
| 5001-10000 employees | 11 | 6% | 10 | 4% | even |
| 10,001+ employees | 17 | 9% | 18 | 8% | even |
| Segment | EPA SWMM | share | HEC-HMS | share | Leans |
|---|---|---|---|---|---|
| Business & finance services | 122 | 67% | 155 | 67% | even |
| Property & construction | 36 | 20% | 45 | 19% | even |
| Public, community & associations | 7 | 4% | 11 | 5% | even |
| Manufacturing & industry | 6 | 3% | 8 | 3% | even |
| Consumer services & leisure | 4 | 2% | 3 | 1% | even |
| Technology & software | 3 | 2% | 4 | 2% | even |
| Utilities & infrastructure | 3 | 2% | 6 | 3% | even |
| Media & content | 1 | 1% | 1 | 0% | even |
| Segment | EPA SWMM | share | HEC-HMS | share | Leans |
|---|---|---|---|---|---|
| United States | 144 | 79% | 187 | 80% | even |
| Canada | 12 | 7% | 9 | 4% | EPA SWMM |
| United Kingdom | 4 | 2% | 6 | 3% | even |
| Australia | 3 | 2% | 3 | 1% | even |
| Italy | 3 | 2% | – | – | outside top 12 |
| Germany | 2 | 1% | 2 | 1% | even |
| Spain | 2 | 1% | 3 | 1% | even |
| France | 2 | 1% | 3 | 1% | even |
| Switzerland | 1 | 1% | – | – | outside top 12 |
| Denmark | 1 | 1% | – | – | outside top 12 |
| Netherlands | 1 | 1% | 2 | 1% | even |
| South Africa | 1 | 1% | 2 | 1% | even |
| United Arab Emirates | – | – | 1 | 0% | outside top 12 |
| Austria | – | – | 1 | 0% | outside top 12 |
| Belgium | – | – | 1 | 0% | outside top 12 |
| Segment | EPA SWMM | share | HEC-HMS | share | Leans |
|---|---|---|---|---|---|
| Engineering (non-software) | 527 | 75% | 743 | 79% | HEC-HMS |
| construction and civil | 76 | 11% | 87 | 9% | even |
| Quality, safety & environment | 16 | 2% | 7 | 1% | even |
| Product, program & project management | 6 | 1% | 7 | 1% | even |
| research and science | 6 | 1% | 8 | 1% | even |
| General management & consulting | 5 | 1% | 1 | 0% | even |
| Data & AI | 1 | 0% | 1 | 0% | even |
| Legal, compliance & risk | 1 | 0% | 1 | 0% | even |
| Unclassified | 1 | 0% | – | – | outside top 12 |
| real estate and property | – | – | 3 | 0% | outside top 12 |
The companies behind each column
Companies using EPA SWMM →
Companies using HEC-HMS →
civil infrastructure water ranked →
Quote the sentence with the date and the link. The numbers change daily; the link always shows the current ones.
HEC-HMS is named by 233 companies in job postings and EPA SWMM by 182; 120 name both. (Breaknorm, 4 November 2026, https://breaknorm.co/compare/epa-swmm-vs-hec-hms)
Read from the source, not self-reported
Every number on this page can be traced to a page we crawled or a posting we read. Full methodology →
- Job postingsRead hourly from career sites. A tool counts when the employer's own text names it as the team's system; both tools can count for one company.
- Website and DNSScripts and embeds on the company's pages, plus SPF, DKIM, MX and CNAME records of its domain that point at the vendor.
- SegmentsCountry, size and industry from the company profile built from its website.
- Not a reviewNo ratings, prices or feature claims. For those, read the vendors.
EPA SWMM vs HEC-HMS: questions
Which is more used, EPA SWMM or HEC-HMS?
By companies naming it in their own job postings, HEC-HMS (233) over EPA SWMM (182). By website-and-DNS footprint, HEC-HMS (0 vs 0), because its scripts and mail records sit on many small company sites.
Who chooses EPA SWMM?
37% of EPA SWMM companies have 2 to 200 employees, against 31% for HEC-HMS. 35% of EPA SWMM companies have over 1,000 employees, against 34% for HEC-HMS.
Do companies run both?
120 companies name both in their postings, usually EPA SWMM in marketing and HEC-HMS in sales, or during a migration.
Where do these numbers come from?
From the employer's own text in job postings read hourly from career sites, and from scripts found on company websites in our crawl. No vendor data, no surveys.
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