Operating signal within 12 months from two or more independent sources.
What they make
All Other Miscellaneous Chemical Product and Preparation Manufacturing325998- chemical
- industrial water treatment
- cooling water treatment
- closed loop systems
- cleaning agents
- automotive
- TXMAS Information
NAMED ON THE COMPANY’S OWN WEBSITE, READ JUL 29, 2026
Products
Recorded against the company rather than this address. Federal award and drug records name the company, not the plant, so we cannot say which of its sites makes these.
Where these came from
Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Polychemie INC | Pearlington | All Other Miscellaneous Chemical Product and Preparation Manufacturing 325998 | LIKELY ACTIVE | 16.4 KM |
| Calgon Carbon Corporation | Bay St Louis | Other Basic Inorganic Chemical Manufacturing 325188 | ACTIVE | 17.5 KM |
| Apollo Petroleum | Picayune | All Other Miscellaneous Chemical Product and Preparation Manufacturing 325998 | LIKELY ACTIVE | 27.2 KM |
| Heritage Plastics INC | Picayune | Custom Compounding of Purchased Resins 325991 | LIKELY ACTIVE | 28.0 KM |
| Mackenzie Transition LLC - Mackenzie Company | Bush | All Other Basic Organic Chemical Manufacturing 325199 | UNVERIFIED | 35.9 KM |
Also at this address
No other federal record shares this street address.
Where this record comes from
3 sources hold this plant, and 11 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.
- The company’s own websiteOPERATINGfirst seen JUL 2026 · last seen OCT 2026
- SAM.gov entity registrationOPERATINGRecord NV5NXFP9SJJ9 · first seen AUG 2025 · last seen JUL 2026
- SBA Paycheck Protection Program loan recordsEXISTENCERecord LA|slidell|39478 hwy 190 · first seen APR 2020 · last seen APR 2020
IN ST. TAMMANY COUNTY1 other plant shares this one’s industry (Other Chemical Product and Preparation Manufacturing, NAICS 3259); 0 of them have a size band on record.
What each source says
Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.
- Name
- SAM.gov: SWE INC · JUL 2026
- Street address
- SAM.gov: 39478 HIGHWAY 190 E · JUL 2026
- City
- SAM.gov: SLIDELL · JUL 2026
- State
- SAM.gov: LA · JUL 2026
- Coordinates
- Census geocoder: 30.267176789448,-89.740463154384 · JUL 2026
- Employees (band)
- SBA PPP: 20-99 · APR 2020
- Website
- SAM.gov: http://www.southwestengineers.com · JUL 2026
- CAGE code
- SAM.gov: 05EJ2 · JUL 2026
- PPP loan
- SBA PPP: PPP loan x1, approved 2020-04-15, 48 jobs reported · APR 2020
- SAM registration expires
- SAM.gov: 2027-07-20 · JUL 2026
- State business registration
- MS SOS: SWE, Inc., registered with the Mississippi Secretary of State; Corporation; registered 2020-02-06; revoked · FEB 2020


