4 sources hold this plant, and 12 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.

EPA cross-references this facility in RCRAINFO · EPA site type STATIONARY.

The company’s own websiteOPERATING
first seen JUL 2026 · last seen OCT 2026
SAM.gov entity registrationOPERATING
Record SWLKT49XK2R7 · first seen AUG 2025 · last seen SEP 2026
EPA Facility Registry ServiceEXISTENCE
Record 110072007913 · first seen SEP 2025 · last seen SEP 2025
DOL Form 5500 retirement plan filingsOPERATING
Record 822424459|CA|93257|1343 s main st · first seen DEC 2024 · last seen DEC 2024

IN TULARE COUNTY5 other plants share this one’s industry (Motor Vehicle Parts Manufacturing, NAICS 3363); 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: EPA: ZERO NOX INC · JUL 2026 · ON THIS PAGE; SAM.gov: ZERO NOX INC · SEP 2026 · ON THIS PAGE
Street addressSOURCES DISAGREE: EPA: 1343 S MAIN ST · JUL 2026 · ON THIS PAGE; SAM.gov: 15228 ROAD 192 · SEP 2026
City: EPA: PORTERVILLE · JUL 2026 · ON THIS PAGE; SAM.gov: PORTERVILLE · SEP 2026 · ON THIS PAGE
State: EPA: CA · JUL 2026 · ON THIS PAGE; SAM.gov: CA · SEP 2026 · ON THIS PAGE
County (FIPS code): EPA: 06107 · SEP 2026
Coordinates: EPA: 36.041483,-119.017501 · JUL 2026
Employees (band): DOL: 20-99 · DEC 2024
Website: SAM.gov: www.zeronox.com · SEP 2026
Year established: Company website: 2017 · SEP 2026
CAGE code: SAM.gov: 9SK86 · SEP 2026
Retirement plan filing (Form 5500): DOL: 28 active participants, plan year ending 2024-12-31, 1 plan(s) · DEC 2024
SAM registration expires: SAM.gov: 2027-08-19 · SEP 2026

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