Operating signal within 24 months, or from a single source.
What they make
All Other Miscellaneous Chemical Product and Preparation Manufacturing325998Southwest Engineers is a chemical company specializing in industrial water treatment, serving industries including automotive and paint, biocides, commercial and institutional, power, process and manufacturing, pulp and paper, refinery and process, sugar science, and wastewater. The company manufactures and provides boiler and cooling water treatment chemicals, closed loop systems, cleaning agents, polymer and wastewater products, and potable water treatment, along with equipment and services including analytical laboratory work, equipment inspections, turnkey solutions, training, and toll manufacturing. Southwest Engineers holds ISO 9001:2015 certification.
SUMMARIZED FROM THE COMPANY’S OWN WEBSITE
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 Saint Louis | Other Basic Inorganic Chemical Manufacturing 325188 | ACTIVE | 17.5 KM |
| Polychemie INC | Pearlington | All Other Miscellaneous Chemical Product and Preparation Manufacturing 325998 | UNVERIFIED | 18.1 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 |
Also at this address
No other federal record shares this street address.
WHERE THIS RECORD COMES FROM — 2 FEDERAL SOURCES, 8 FIELDS
Every fact on this page traces to a public federal filing. The table below names which register holds this facility, whether that register proves the plant operates or only that it exists, and when each of them last saw it.
| Source | Evidence | First seen | Last seen |
|---|---|---|---|
| COMPANY SITE | OPERATING | JUL 2026 | JUL 2026 |
| SAM GOV | OPERATING | AUG 2025 | AUG 2025 |
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
| FIELD | SOURCE | SIGNAL |
|---|---|---|
| ADDRESS LINE1 | SAM GOV | AUG 2025 |
| CAGE CODE | SAM GOV | AUG 2025 |
| CITY | SAM GOV | AUG 2025 |
| GEOM | CENSUS GEOCODER | JUL 2026 |
| NAME | SAM GOV | AUG 2025 |
| REGISTRATION EXPIRATION | SAM GOV | AUG 2025 |
| STATE | SAM GOV | AUG 2025 |
| WEBSITE | SAM GOV | AUG 2025 |
Status is computed from independent sources; nothing here is self-reported unless marked Claimed.