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Kansas City Southern Railway Company

Railroads, Line-Haul Operating, Artesia, Mississippi. NPDES permit MS0044695, in force until Aug 31, 2029. Last 12 months: over a limit 5 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due: About 28 days after each period: form Q quarterly (8 values)
Last report on file: June 2026
Oct 2024 – Sep 2025: 0 values over a limit, 0 required values missing, 0 of 4 reports late

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

Period ending	Parameter	Reported	Limit	Over by
March 2026	Solids, total suspended, daily maximum	52.7 mg/L	≤ 45 mg/L	17%
March 2026	Solids, total suspended, quarterly average	33.3 mg/L	≤ 30 mg/L	11%
March 2026	pH, maximum	9.3 SU	≤ 9 SU	—
June 2026	Solids, total suspended, daily maximum	77 mg/L	≤ 45 mg/L	71%
June 2026	Solids, total suspended, quarterly average	34.66 mg/L	≤ 30 mg/L	16%

Limits in force (8)

Parameter	Statistic	Limit	Months
pH	minimum	≥ 6 SU	all year
pH	maximum	≤ 9 SU	all year
Solids, total suspended	quarterly average	≤ 30 mg/L	all year
Solids, total suspended	daily maximum	≤ 45 mg/L	all year
Oil & Grease	quarterly average	≤ 10 mg/L	all year
Oil & Grease	daily maximum	≤ 15 mg/L	all year
Flow, in conduit or thru treatment plant	quarterly average	report only (MGD)	all year
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year

How strict are these limits?

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 suspended, quarterly average 30 mg/L — stricter than 29% of 74 other minor industrial and other permits nationwide; 41% have the same limit
Oil & Grease, daily maximum 15 mg/L — stricter than 26% of 45 other minor industrial and other permits in Mississippi; 60% have the same limit

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MS0044695 · MCP: https://passage-data.com/mcp