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Tronox LLC, Hamilton Facility

Inorganic Pigments, major discharger, Hamilton, Mississippi. NPDES permit MS0002232, in force until Nov 30, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due

About 28 days after each period: outfall 101 form A monthly (23 values), outfall 201 form A monthly (30 values), outfall 201 form S twice a year, outfall 201 form Y yearly, outfall 301 form Y yearly

Last report on file

August 2026

Oct 2024 – Sep 2025

0 values over a limit, 0 required values missing, 2 of 25 reports late

Limits in force (65)

How strict are these limits?

• Chromium, total [as Cr], monthly average .042 mg/L — stricter than 97% of 90 other major industrial and other permits nationwide
• Chlorine, total residual, daily maximum .019 mg/L — stricter than 86% of 420 other major industrial and other permits nationwide; 8% have the same limit
• Chlorine, total residual, monthly average .011 mg/L — stricter than 84% of 221 other major industrial and other permits nationwide; 10% have the same limit

Cited limits by parameter: Mississippi's rules and the federal ones.

Same industry: the 23 Chemicals and Allied Products permits in Mississippi.

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MS0002232 · MCP: https://passage-data.com/mcp