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Centerpoint Engery Resources Corporation

Gas Transmission And Distribution, Evansville, Indiana. NPDES permit IN0058521, in force until Aug 31, 2028. Last 12 months: no values over a limit, 1 of 15 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 28 days after each period: form A monthly (9 values)
Renewal application due: Mar 4, 2028 · 180 days before expiry; your permit may set another date
Last report on file: August 2026
Oct 2024 – Sep 2025: 1 value over a limit, 0 required values missing, 1 of 12 reports late

Limits in force (9)

Parameter	Statistic	Limit	Months
pH	daily minimum	≥ 6 SU	all year
pH	daily maximum	≤ 9 SU	all year
Solids, total suspended	daily maximum	≤ 45 mg/L	all year
Oil and grease, hexane extr method	daily maximum	≤ 15 mg/L	all year
Benzene	daily maximum	≤ .005 mg/L	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
Chlorine, total residual	daily maximum	< .06 mg/L	all year
Flow, total	monthly total	report only (Mgal/mo)	all year

How strict are these limits?

Benzene, daily maximum .005 mg/L — stricter than 76% of 147 other minor industrial and other permits nationwide; 15% have the same limit
Solids, total suspended, daily maximum 45 mg/L — stricter than 31% of 259 other minor industrial and other permits in Indiana; 8% have the same limit

Cited limits by parameter: Indiana'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/IN0058521 · MCP: https://passage-data.com/mcp