DARIEN (T)

NPDES permit NY0228346 · Minor POTW · effective, expires 2030-06-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

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

2values over a limit
0required values missing, on 0 form(s)
0of 15 forms filed late

Last period with anything received: 2026-07-31. Most often over: BOD, carbonaceous [5 day, 20 C] (1), Solids, total suspended (1).

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among NY permits in EPA's filings — check your permit).

Limits in force (48)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitDAILY MX report only all year
001Temperature, water deg. fahrenheitDAILY MX report only all year
001Flow rateMO AVG <= 64500 gal/d all year
001Oxygen, dissolved [DO]DAILY MN >= 7 mg/L all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 8.5 SU all year
001pHMINIMUM report only all year
001pHMAXIMUM report only all year
001Solids, total suspendedMO AVG <= 30 mg/L Jan, Feb, Mar, Apr, May, Nov, Dec
001Solids, total suspendedDAILY MX <= 10 mg/L all year
001Solids, total suspendedDAILY MX <= 20 mg/L Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedDAILY MX <= 10 mg/L Jan, Feb, Mar, Apr, May, Nov, Dec
001Solids, total suspendedDAILY MX <= 45 mg/L Jan, Feb, Mar, Apr, May, Nov, Dec
001Solids, total suspendedMO AVG <= 16.1 lb/d Jan, Feb, Mar, Apr, May, Nov, Dec
001Solids, total suspendedDAILY MX <= 5.4 lb/d all year
001Solids, total suspendedDAILY MX <= 10.8 lb/d Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedDAILY MX <= 5.4 lb/d Jan, Feb, Mar, Apr, May, Nov, Dec
001Solids, total suspendedDAILY MX <= 24.2 lb/d Jan, Feb, Mar, Apr, May, Nov, Dec
001Solids, total suspendedDAILY MX report only all year
001Solids, settleableDAILY MX <= .1 mL/L all year
001Solids, settleableDAILY MX report only all year
001Nitrogen, ammonia, total [as NH3]MO AVG <= 1.2 mg/L Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia, total [as NH3]MO AVG report only Jan, Feb, Mar, Apr, May, Nov, Dec
001Nitrogen, ammonia, total [as NH3]DAILY MX <= 7 mg/L (alert) Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia, total [as NH3]DAILY MX <= 31 mg/L (alert) Jan, Feb, Mar, Apr, May, Nov, Dec
001Nitrogen, ammonia, total [as NH3]MO AVG <= .65 lb/d Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia, total [as NH3]MO AVG report only Jan, Feb, Mar, Apr, May, Nov, Dec
001Nitrogen, ammonia, total [as NH3]DAILY MX report only (alert) Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia, total [as NH3]DAILY MX report only (alert) Jan, Feb, Mar, Apr, May, Nov, Dec
001Nitrogen, ammonia, total [as NH3]MO AVG report only all year
001Chlorine, total residualDAILY MX <= 30 ug/L May, Jun, Jul, Aug, Sep, Oct
001Solids, total dissolvedDAILY MX report only all year
001Solids, total dissolvedDAILY MX report only all year
001Coliform, fecal general30DA GEO <= 200 #/100mL May, Jun, Jul, Aug, Sep, Oct
001Coliform, fecal general7 DA GEO <= 400 #/100mL May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L Jan, Feb, Mar, Apr, May, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 5 mg/L Jan, Feb, Mar, Apr, May, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 38 mg/L Jan, Feb, Mar, Apr, May, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 5 mg/L all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 30 mg/L Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 13.5 lb/d Jan, Feb, Mar, Apr, May, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 2.7 lb/d Jan, Feb, Mar, Apr, May, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 20.5 lb/d Jan, Feb, Mar, Apr, May, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 2.7 lb/d all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 16.1 lb/d Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Carbonaceous oxygen demand, % removalMO AV MN >= 85 % 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