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

T & R Electric Supply Co., Inc.

Transformers, Except Electronic, Colman, South Dakota. NPDES permit SD0025437 expired Mar 31, 2019; its limits still apply. Last 12 months: over a limit 2 times (last July 2026), 2 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (14 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimit
June 2026pH, daily maximum9.29 SU≤ 9 SU
July 2026pH, daily maximum9.41 SU≤ 9 SU

Limits in force (14)

ParameterStatisticLimitMonths
Flow rate30-day averagereport only (MGD)all year
Flow ratedaily maximumreport only (MGD)all year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspended30-day average≤ 90 mg/Lall year
Solids, total suspendeddaily maximum≤ 135 mg/Lall year
Oil and grease, hexane extr methoddaily maximum≤ 10 mg/Lall year
Polychlorinated biphenyls [PCBs]daily maximum≤ .014 ug/Lall year
Polychlorinated biphenyls [PCBs]daily maximumreport only (ug/L)all year
Polychlorinated biphenyls [PCBs]daily maximum< .5 ug/Lall year
Floating solids, waste or visible foam-visualdaily maximum≤ 0 abst=0;prst=1all year
Flow, totalmonthly totalreport only (Mgal)all year
Duration of dischargemonthly totalreport only (d)all year
Oil and grease visualdaily maximum≤ 0 abst=0;prst=1all year

How strict are these limits?

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

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/SD0025437 · MCP: https://passage-data.com/mcp