Island Utilities LLC — NPDES permit VA0091049: limits, due date and EPA's record

Sewerage Systems, Chincoteague, Virginia. NPDES permit VA0091049, in force until Sep 30, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Limits in force (54)

Parameter	Statistic	Limit	Months	Outfall
Oxygen, dissolved [DO]	minimum	≥ 5 mg/L	all year	001
pH	minimum	≥ 6 SU	all year	001
pH	maximum	≤ 9 SU	all year	001
Solids, total suspended	monthly average	≤ 10 mg/L	all year	001
Solids, total suspended	weekly average	≤ 15 mg/L	all year	001
Solids, total suspended	monthly average	≤ .9 kg/d	all year	001
Solids, total suspended	weekly average	≤ 1.4 kg/d	all year	001
Solids, total suspended	monthly average	report only (mg/L)	all year	001
Nitrogen, ammonia total [as N]	monthly average	report only (mg/L)	all year	001
Nitrogen, Kjeldahl, total [as N]	monthly average	≤ 3 mg/L	all year	001
Nitrogen, Kjeldahl, total [as N]	weekly average	≤ 4.5 mg/L	all year	001
Nitrogen, Kjeldahl, total [as N]	monthly average	≤ .3 kg/d	all year	001
Nitrogen, Kjeldahl, total [as N]	weekly average	≤ .4 kg/d	all year	001
Flow, in conduit or thru treatment plant	average	≤ .025 MGD (alert, not enforceable)	all year	001
Flow, in conduit or thru treatment plant	maximum	report only (MGD) (alert, not enforceable)	all year	001
Chlorine, total residual	monthly average	≤ .005 mg/L	all year	001
Chlorine, total residual	weekly average	≤ .007 mg/L	all year	001
Chlorine, total residual	minimum	≥ .6 mg/L	all year	001
Enterococci	monthly average	≤ 35 #/100mL	all year	001
Coliform, fecal general	geometric mean	≤ 200 #/100mL	all year	001
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 10 mg/L	all year	001
BOD, carbonaceous [5 day, 20 C]	weekly average	≤ 15 mg/L	all year	001
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ .9 kg/d	all year	001
BOD, carbonaceous [5 day, 20 C]	weekly average	≤ 1.4 kg/d	all year	001
BOD, carbonaceous [5 day, 20 C]	monthly average	report only (mg/L)	all year	001
BOD, carb-5 day, 20 deg C, percent removal	monthly average minimum	≥ 85 %	all year	001
Solids, suspended percent removal	monthly average minimum	≥ 85 %	all year	001
Oxygen, dissolved [DO]	minimum	≥ 5 mg/L	all year	002
pH	minimum	≥ 6 SU	all year	002
pH	maximum	≤ 9 SU	all year	002
Solids, total suspended	monthly average	≤ 10 mg/L	all year	002
Solids, total suspended	weekly average	≤ 15 mg/L	all year	002
Solids, total suspended	monthly average	≤ .45 kg/d	all year	002
Solids, total suspended	weekly average	≤ .68 kg/d	all year	002
Solids, total suspended	monthly average	report only (mg/L)	all year	002
Nitrogen, ammonia total [as N]	monthly average	report only (mg/L)	all year	002
Nitrogen, Kjeldahl, total [as N]	monthly average	≤ 3 mg/L	all year	002
Nitrogen, Kjeldahl, total [as N]	weekly average	≤ 4.5 mg/L	all year	002
Nitrogen, Kjeldahl, total [as N]	monthly average	≤ .14 kg/d	all year	002
Nitrogen, Kjeldahl, total [as N]	weekly average	≤ .2 kg/d	all year	002
Flow, in conduit or thru treatment plant	average	≤ .012 MGD (alert, not enforceable)	all year	002
Flow, in conduit or thru treatment plant	maximum	report only (MGD) (alert, not enforceable)	all year	002
Chlorine, total residual	monthly average	≤ .005 mg/L	all year	002
Chlorine, total residual	weekly average	≤ .007 mg/L	all year	002
Chlorine, total residual	minimum	≥ .6 mg/L	all year	002
Enterococci	monthly average	≤ 35 #/100mL	all year	002
Coliform, fecal general	geometric mean	≤ 200 #/100mL	all year	002
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 10 mg/L	all year	002
BOD, carbonaceous [5 day, 20 C]	weekly average	≤ 15 mg/L	all year	002
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ .45 kg/d	all year	002
BOD, carbonaceous [5 day, 20 C]	weekly average	≤ .68 kg/d	all year	002
BOD, carbonaceous [5 day, 20 C]	monthly average	report only (mg/L)	all year	002
BOD, carb-5 day, 20 deg C, percent removal	monthly average minimum	≥ 85 %	all year	002
Solids, suspended percent removal	monthly average minimum	≥ 85 %	all year	002

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/VA0091049 · MCP: https://passage-data.com/mcp