Passage Data · Check a report · Use it from your AI

Oil Dri Production Company

Minerals, Ground Or Treated, Ripley, Mississippi. NPDES permit MS0033812, in force until Mar 31, 2028. Last 12 months: over a limit once (last October 2025), 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 28 days after each period: form A monthly (12 values)
Renewal application due: Oct 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file: August 2026
Oct 2024 – Sep 2025: 0 values over a limit, 0 required values missing, 1 of 12 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period ending	Parameter	Reported	Limit	Over by
October 2025	Solids, total dissolved, monthly average	1043 mg/L	≤ 750 mg/L	39%

Limits in force (12)

Parameter	Statistic	Limit	Months
pH	minimum	≥ 6 SU	all year
pH	maximum	≤ 9 SU	all year
Solids, total suspended	monthly average	≤ 30 mg/L	all year
Solids, total suspended	daily maximum	≤ 45 mg/L	all year
Solids, total suspended	monthly average	report only (lb/d)	all year
Solids, total suspended	daily maximum	report only (lb/d)	all year
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year
Solids, total dissolved	monthly average	≤ 750 mg/L	all year
Solids, total dissolved	daily maximum	≤ 1500 mg/L	all year
Solids, total dissolved	monthly average	report only (lb/d)	all year
Solids, total dissolved	daily maximum	report only (lb/d)	all year

How strict are these limits?

Solids, total dissolved, monthly average 750 mg/L — stricter than 68% of 134 other minor industrial and other permits nationwide; 4% have the same limit
Solids, total suspended, daily maximum 45 mg/L — stricter than 60% of 582 other minor industrial and other permits in Mississippi; 38% have the same limit
Solids, total dissolved, daily maximum 1500 mg/L — stricter than 53% of 362 other minor industrial and other permits nationwide; 4% have the same limit

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

Same industry: the 10 Stone, Clay, Glass and Concrete Products permits in Mississippi.

Check this month's numbers Email me before each report is due

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MS0033812 · MCP: https://passage-data.com/mcp