# Zenco Laboratories: TCEQ notice of violation, 8 waste violations (Category B) in Stafford, TX

**Score:** 65/100

| Field | Value |
|---|---|
| Site | Zenco Laboratories |
| Program | Solid, used-oil and hazardous waste |
| Highest severity | Category B (moderate) |
| Violations | 8 |
| Rules cited | 262.11; 262.18(d)(1); 335.474(2); 335.475; 335.504; 335.53(a); 335.53(g); 262.16(b)(2)(iv); 262.20(a); 262.40(a); 335.53(e); 335.54 |
| Location | Stafford, Fort Bend County, TX |
| TCEQ region | Houston |
| Investigation approved | 2026-08-26 |
| Regulated entity (RN) | RN110662624 |

## Why this score
- Category B (moderate) violation.
- 8 violations in one investigation.
- Program with paid testing and remediation work.

Source: Texas Commission on Environmental Quality (TCEQ) Notices of Violation (data.texas.gov) (https://data.texas.gov/d/mwzi-gyw7). Last refreshed: 2026-10-28T20:51:00.471Z.
From TCEQ notice of violation data. A notice of violation is an investigator's finding that the site must correct; it is not a final enforcement order or penalty, and many are resolved quickly. Septic (OSSF) cases at homes, residences and sites named after a person are excluded. Verify with TCEQ (Central Registry and compliance history).