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Amphenol Corporation

Industrial Organic Chemicals, Columbia, South Carolina. NPDES permit SC0046264 expired Dec 31, 2018; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 29 days after each period: form 1 monthly (9 values)
Last report on file: August 2026
Oct 2024 – Sep 2025: 5 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (9)

Parameter	Statistic	Limit	Months
pH	instantaneous minimum	report only (SU)	all year
pH	instantaneous maximum	report only (SU)	all year
pH	instantaneous minimum	≥ 6 SU	all year
pH	instantaneous maximum	≤ 8.5 SU	all year
pH	instantaneous maximum	≤ 0 SU	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
Trichloroethene	monthly average	report only (mg/L)	all year
Trichloroethene	daily maximum	≤ .005 mg/L	all year

How strict are these limits?

pH, instantaneous maximum 0 SU — stricter than 100% of 62 other minor industrial and other permits in South Carolina

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

Same industry: the 24 Chemicals and Allied Products permits in South Carolina.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/SC0046264 · MCP: https://passage-data.com/mcp