WALLKILL (T)

NPDES permit NY0024422 · Major POTW · administratively continued, expires 2017-02-28 · 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.

This permit expired on 2017-02-28 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

1values over a limit
0required values missing, on 0 form(s)
0of 35 forms filed late

Last period with anything received: 2026-07-31. Most often over: Oxygen demand, ultimate (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 (39)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeDAILY MX report only all year
001Oxygen demand, ultimateDAILY MX <= 50.4 mg/L Jun, Jul, Aug, Sep, Oct
001Oxygen demand, ultimateDAILY MX <= 1700 lb/d Jun, Jul, Aug, Sep, Oct
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspended7 DA AVG <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 1000 lb/d all year
001Solids, total suspended7 DA AVG <= 1500 lb/d all year
001Solids, total suspendedMO AVG report only all year
001Solids, settleableDAILY MX <= .1 mL/L all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Arsenic, total [as As]DAILY MX <= .5 lb/d (alert) all year
001Cadmium, total [as Cd]DAILY MX <= 1 lb/d all year
001Chromium, total [as Cr]DAILY MX <= .5 lb/d (alert) all year
001Copper, total [as Cu]DAILY MX <= 3.5 lb/d all year
001Copper, total [as Cu]DAILY MX <= 2 lb/d all year
001Lead, total [as Pb]DAILY MX <= 1.5 lb/d all year
001Nickel, total [as Ni]DAILY MX <= 8.3 lb/d all year
001Silver, total [as Ag]DAILY MX <= .5 lb/d (alert) all year
001Zinc, total [as Zn]DAILY MX <= 2.7 lb/d (alert) all year
001Antimony, total [as Sb]DAILY MX <= 4 lb/d (alert) all year
001Nitrogen, ammonia, total [as NH3]MO AVG <= 8.9 mg/L Jan, Feb, Mar, Apr, May, Nov, Dec
001Nitrogen, ammonia, total [as NH3]MO AVG <= 4.1 mg/L Jun, Jul, Aug, Sep, Oct
001Di[2-ethylhexyl] phthalate [DEHP]DAILY MX <= 1.7 lb/d (alert) all year
001Flow, in conduit or thru treatment plantMO AVG <= 4 MGD 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
001Phenolic compounds, unchlorinatedDAILY MX <= 2.7 lb/d all year
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 report only Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 40 mg/L Jan, Feb, Mar, Apr, May, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 830 lb/d Jan, Feb, Mar, Apr, May, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]DAILY MX report only Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 1300 lb/d Jan, Feb, Mar, Apr, May, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG report only Jan, Feb, Mar, Apr, May, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]DAILY MX report only Jun, Jul, Aug, Sep, Oct
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Carbonaceous oxygen demand, % removalMO AV MN >= 85 % Jan, Feb, Mar, Apr, May, Nov, Dec

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