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City of Cheney

Sewage treatment plant, major discharger, Cheney, Washington. NPDES permit WA0020842 expired Aug 31, 2021; its limits still apply. Last 12 months: no values over a limit, 6 of 36 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 15 days after each period: outfall 002 form MM monthly (2 values), outfall 003 form MM monthly (1 value), outfall 004 form MM monthly (1 value)
Last report on file: September 2026
Oct 2024 – Sep 2025: 0 values over a limit, 0 required values missing, 0 of 36 reports late

Limits in force (8)

Parameter	Statistic	Limit	Months	Outfall
Solids, total suspended	weekly average	≤ 23 mg/L	all year	002
Solids, total suspended	weekly average	≤ 23 mg/L	all year	002
Solids, total suspended	weekly average	≤ 585 lb/d	all year	002
Solids, total suspended	weekly average	≤ 585 lb/d	all year	002
Coliform, fecal general	monthly geometric mean	≤ 50 #/100mL	all year	003
Coliform, fecal general	monthly geometric mean	≤ 50 #/100mL	all year	003
Coliform, fecal general	weekly geometric mean	≤ 100 #/100mL	all year	004
Coliform, fecal general	weekly geometric mean	≤ 100 #/100mL	all year	004

How strict are these limits?

Coliform, fecal general, weekly geometric mean 100 #/100mL — stricter than 94% of 56 other major POTWs in Washington; 4% have the same limit
Solids, total suspended, weekly average 23 mg/L — stricter than 93% of 65 other major POTWs in Washington; 2% have the same limit
Coliform, fecal general, monthly geometric mean 50 #/100mL — stricter than 92% of 52 other major POTWs in Washington

Cited limits by parameter: Washington'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/WA0020842 · MCP: https://passage-data.com/mcp