Germantown Hills, Village of — NPDES permit IL0028916: limits, due date and EPA's record

Sewage treatment plant, Metamora, Illinois. NPDES permit IL0028916, in force until Nov 30, 2027. Last 12 months: over a limit 2 times (last December 2025). Source: EPA ECHO, Oct 22, 2026.

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

Period ending	Parameter	Reported	Limit	Over by
December 2025	BOD, carbonaceous [5 day, 20 C], daily maximum	35 mg/L	≤ 20 mg/L	75%
December 2025	BOD, carbonaceous [5 day, 20 C], monthly average	10.5 mg/L	≤ 10 mg/L	5%

Limits in force (74)

Parameter	Statistic	Limit	Months	Outfall
Oxygen, dissolved [DO]	monthly average minimum	≥ 5.5 mg/L	Jan, Feb, Aug, Sep, Oct, Nov, Dec	001
Oxygen, dissolved [DO]	minimum weekly average	≥ 4 mg/L	Jan, Feb, Aug, Sep, Oct, Nov, Dec	001
Oxygen, dissolved [DO]	minimum weekly average	≥ 6 mg/L	Mar–Jul	001
Oxygen, dissolved [DO]	daily minimum	≥ 3.5 mg/L	Jan, Feb, Aug, Sep, Oct, Nov, Dec	001
Oxygen, dissolved [DO]	daily minimum	≥ 5 mg/L	Mar–Jul	001
pH	minimum	≥ 6 SU	all year	001
pH	maximum	≤ 9 SU	all year	001
Solids, total suspended	monthly average	≤ 12 mg/L	all year	001
Solids, total suspended	daily maximum	≤ 24 mg/L	all year	001
Solids, total suspended	monthly average	≤ 50 lb/d	all year	001
Solids, total suspended	daily maximum	≤ 100 lb/d	all year	001
Nitrogen, ammonia total [as N]	monthly average	≤ 1.4 mg/L	Mar	001
Nitrogen, ammonia total [as N]	monthly average	≤ .9 mg/L	Apr–Oct	001
Nitrogen, ammonia total [as N]	monthly average	≤ 3.4 mg/L	Jan, Feb, Nov, Dec	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 4.2 mg/L	Mar	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 3 mg/L	Apr–Oct	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 4.3 mg/L	Jan, Feb, Nov, Dec	001
Nitrogen, ammonia total [as N]	monthly average	≤ 5.8 lb/d	Mar	001
Nitrogen, ammonia total [as N]	monthly average	≤ 3.8 lb/d	Apr–Oct	001
Nitrogen, ammonia total [as N]	monthly average	≤ 14 lb/d	Jan, Feb, Nov, Dec	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 18 lb/d	Mar	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 13 lb/d	Apr–Oct	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 18 lb/d	Jan, Feb, Nov, Dec	001
Nitrogen, ammonia total [as N]	weekly average	≤ 3.5 mg/L	Mar	001
Nitrogen, ammonia total [as N]	weekly average	≤ 15 lb/d	Mar	001
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	001
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	001
Chlorine, total residual	daily maximum	≤ .05 mg/L	all year	001
Coliform, fecal general	daily maximum	report only (#/100mL)	May–Oct	001
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 10 mg/L	all year	001
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 20 mg/L	all year	001
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 42 lb/d	all year	001
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 83 lb/d	all year	001
Oxygen, dissolved [DO]	monthly average minimum	≥ 5.5 mg/L	Jan, Feb, Aug, Sep, Oct, Nov, Dec	002
Oxygen, dissolved [DO]	minimum weekly average	≥ 6 mg/L	Mar–Jul	002
Oxygen, dissolved [DO]	minimum weekly average	≥ 4 mg/L	Jan, Feb, Aug, Sep, Oct, Nov, Dec	002
Oxygen, dissolved [DO]	daily minimum	≥ 5 mg/L	Mar–Jul	002
Oxygen, dissolved [DO]	daily minimum	≥ 3.5 mg/L	Jan, Feb, Aug, Sep, Oct, Nov, Dec	002
pH	minimum	≥ 6 SU	all year	002
pH	maximum	≤ 9 SU	all year	002
Solids, total suspended	monthly average	≤ 12 mg/L	all year	002
Solids, total suspended	daily maximum	≤ 24 mg/L	all year	002
Solids, total suspended	monthly average	≤ 50 lb/d	all year	002
Solids, total suspended	daily maximum	≤ 100 lb/d	all year	002
Nitrogen, ammonia total [as N]	monthly average	≤ 1.4 mg/L	Mar	002
Nitrogen, ammonia total [as N]	monthly average	≤ .9 mg/L	Apr–Oct	002
Nitrogen, ammonia total [as N]	monthly average	≤ 3.4 mg/L	Jan, Feb, Nov, Dec	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 4.2 mg/L	Mar	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 3 mg/L	Apr–Oct	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 4.3 mg/L	Jan, Feb, Nov, Dec	002
Nitrogen, ammonia total [as N]	monthly average	≤ 5.8 lb/d	Mar	002
Nitrogen, ammonia total [as N]	monthly average	≤ 3.8 lb/d	Apr–Oct	002
Nitrogen, ammonia total [as N]	monthly average	≤ 14 lb/d	Jan, Feb, Nov, Dec	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 18 lb/d	Mar	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 13 lb/d	Apr–Oct	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 18 lb/d	Jan, Feb, Nov, Dec	002
Nitrogen, ammonia total [as N]	weekly average	≤ 3.5 mg/L	Mar	002
Nitrogen, ammonia total [as N]	weekly average	≤ 15 lb/d	Mar	002
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	002
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	002
Chlorine, total residual	daily maximum	≤ .05 mg/L	all year	002
Coliform, fecal general	daily maximum	report only (#/100mL)	May–Oct	002
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 10 mg/L	all year	002
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 20 mg/L	all year	002
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 42 lb/d	all year	002
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 83 lb/d	all year	002
BOD, 5-day, 20 deg. C	daily maximum	report only (mg/L)	all year	003
Solids, total suspended	daily maximum	report only (mg/L)	all year	003
Coliform, fecal general	daily maximum	report only (#/100mL)	all year	003
Flow	monthly total	report only (#/mo)	all year	003
BOD, 5-day, 20 deg. C	monthly average	report only (mg/L)	all year	INF
Solids, total suspended	monthly average	report only (mg/L)	all year	INF
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	INF
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	INF

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/IL0028916 · MCP: https://passage-data.com/mcp