Jonesboro, City of — NPDES permit IL0029319: limits, due date and EPA's record

Sewage treatment plant, Jonesboro, Illinois. NPDES permit IL0029319, in force until Feb 28, 2029. Last 12 months: over a limit 2 times (last February 2026). Source: EPA ECHO, Oct 22, 2026.

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

Period ending	Parameter	Reported	Limit	Over by
February 2026	Solids, total suspended, monthly average	47 mg/L	≤ 37 mg/L	27%
February 2026	Solids, total suspended, weekly average	47 mg/L	≤ 45 mg/L	4%

Limits in force (44)

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	≤ 37 mg/L	all year	001
Solids, total suspended	weekly average	≤ 45 mg/L	all year	001
Solids, total suspended	monthly average	≤ 154 lb/d	all year	001
Solids, total suspended	weekly average	≤ 188 lb/d	all year	001
Nitrogen, ammonia total [as N]	daily maximum	report only (mg/L)	all year	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	≤ 25 mg/L	all year	001
BOD, carbonaceous [5 day, 20 C]	weekly average	≤ 40 mg/L	all year	001
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 104 lb/d	all year	001
BOD, carbonaceous [5 day, 20 C]	weekly average	≤ 167 lb/d	all year	001
Oxygen, dissolved [DO]	monthly average minimum	≥ 6 mg/L	Jan, Feb, Aug, Sep, Oct, Nov, Dec	002
Oxygen, dissolved [DO]	minimum weekly average	≥ 4.5 mg/L	Jan, Feb, Aug, Sep, Oct, Nov, Dec	002
Oxygen, dissolved [DO]	minimum weekly average	≥ 6.25 mg/L	Mar–Jul	002
Oxygen, dissolved [DO]	daily minimum	≥ 4 mg/L	Jan, Feb, Aug, Sep, Oct, Nov, Dec	002
Oxygen, dissolved [DO]	daily minimum	≥ 5 mg/L	Mar–Jul	002
pH	minimum	≥ 6 SU	all year	002
pH	maximum	≤ 9 SU	all year	002
Solids, total suspended	monthly average	≤ 37 mg/L	all year	002
Solids, total suspended	weekly average	≤ 45 mg/L	all year	002
Solids, total suspended	monthly average	≤ 154 lb/d	all year	002
Solids, total suspended	weekly average	≤ 188 lb/d	all year	002
Nitrogen, ammonia total [as N]	daily maximum	report only (mg/L)	all year	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	≤ 25 mg/L	all year	002
BOD, carbonaceous [5 day, 20 C]	weekly average	≤ 40 mg/L	all year	002
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 104 lb/d	all year	002
BOD, carbonaceous [5 day, 20 C]	weekly average	≤ 167 lb/d	all year	002
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/IL0029319 · MCP: https://passage-data.com/mcp