Town of Delhi

NPDES permit LA0039802 · Major POTW · effective, expires 2027-12-14 · EPA's file as of 2026-09-19

Check this month's numbers before you file

EPA's record, 2025-09-01 to 2026-08-31

23values over a limit
0required values missing, on 0 form(s)
23of 59 forms filed late

Last period with anything received: 2026-07-31. Most often over: Solids, total suspended (19), Whole Effluent Toxicity [WET] - C. dubia (2), Coliform, fecal general (1).

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (55)

OutfallParameterStatisticLimitMonths
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]WKLY AVG report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]WKLY AVG report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantWKLY AVG report only all year
001Chlorine, total residualINST MAX <= .033 mg/L all year
001Whole Effluent Toxicity [WET] - C. dubia7 DA MIN >= 20 % all year
001Whole Effluent Toxicity [WET] - C. dubiaMO AV MN >= 20 % all year
001Whole Effluent Toxicity [WET] - P. promelas7 DA MIN >= 20 % all year
001Whole Effluent Toxicity [WET] - P. promelasMO AV MN >= 20 % all year
001Mercury, total [as Hg]MO AVG report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Mercury, total [as Hg]MO AVG <= .002 lb/d all year
001Mercury, total [as Hg]DAILY MX <= .005 lb/d all year
001Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
001Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
001Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7 DA MIN report only all year
001Pass/Fail Static Renewal 7Day Chronic Pimephales promelasMO AV MN report only all year
001Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
001Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
001Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
001Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
001NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
001NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
001NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
001NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
001Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubiaMAXIMUM report only all year
001Coef Of Var Static Renewal 7Day Chronic Pimephales promelasMAXIMUM report only all year
101BOD, 5-day, 20 deg. CMO AVG <= 10 mg/L all year
101BOD, 5-day, 20 deg. CWKLY AVG <= 15 mg/L all year
101BOD, 5-day, 20 deg. CMO AVG <= 58 lb/d all year
101pHINST MIN >= 6 SU all year
101pHINST MAX <= 9 SU all year
101Solids, total suspendedMO AVG <= 15 mg/L all year
101Solids, total suspendedWKLY AVG <= 23 mg/L all year
101Solids, total suspendedMO AVG <= 88 lb/d all year
101Flow, in conduit or thru treatment plantMO AVG report only all year
101Flow, in conduit or thru treatment plantWKLY AVG report only all year
101Coliform, fecal generalMOAV GEO <= 200 #/100mL all year
101Coliform, fecal generalWE <= 400 #/100mL all year
102BOD, 5-day, 20 deg. CMO AVG <= 363 lb/d all year
102BOD, 5-day, 20 deg. CWKLY AVG <= 495 lb/d all year
102pHINST MIN >= 6 SU all year
102pHINST MAX <= 9.5 SU all year
102Solids, total suspendedMO AVG <= 754 lb/d all year
102Solids, total suspendedWKLY AVG <= 930 lb/d all year
102Flow, in conduit or thru treatment plantMO AVG report only all year
102Flow, in conduit or thru treatment plantWKLY AVG report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states