Passage Data · Check a report · Use it from your AI

Wallkill (T)

Sewage treatment plant, major discharger, Middletown, New York. NPDES permit NY0024422 expired Feb 28, 2017; its limits still apply. Last 12 months: over a limit once (last July 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (20 values), form M monthly (5 values), form V monthly (6 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 39 reports late

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

Period endingParameterReportedLimitOver by
July 2026Oxygen demand, ultimate, daily maximum98.4 mg/L≤ 50.4 mg/L95%

Limits in force (39)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Oxygen demand, ultimatedaily maximum≤ 50.4 mg/LJun–Oct
Oxygen demand, ultimatedaily maximum≤ 1700 lb/dJun–Oct
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspended7-day average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 1000 lb/dall year
Solids, total suspended7-day average≤ 1500 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, settleabledaily maximum≤ .1 mL/Lall year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year
Arsenic, total [as As]daily maximum≤ .5 lb/d (alert, not enforceable)all year
Cadmium, total [as Cd]daily maximum≤ 1 lb/dall year
Chromium, total [as Cr]daily maximum≤ .5 lb/d (alert, not enforceable)all year
Copper, total [as Cu]daily maximum≤ 3.5 lb/dall year
Copper, total [as Cu]daily maximum≤ 2 lb/dall year
Lead, total [as Pb]daily maximum≤ 1.5 lb/dall year
Nickel, total [as Ni]daily maximum≤ 8.3 lb/dall year
Silver, total [as Ag]daily maximum≤ .5 lb/d (alert, not enforceable)all year
Zinc, total [as Zn]daily maximum≤ 2.7 lb/d (alert, not enforceable)all year
Antimony, total [as Sb]daily maximum≤ 4 lb/d (alert, not enforceable)all year
Nitrogen, ammonia, total [as NH3]monthly average≤ 8.9 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
Nitrogen, ammonia, total [as NH3]monthly average≤ 4.1 mg/LJun–Oct
Di[2-ethylhexyl] phthalate [DEHP]daily maximum≤ 1.7 lb/d (alert, not enforceable)all year
Flow, in conduit or thru treatment plantmonthly average≤ 4 MGDall year
Coliform, fecal general30-day geometric mean≤ 200 #/100mLMay–Oct
Coliform, fecal general7-day geometric mean≤ 400 #/100mLMay–Oct
Phenolic compounds, unchlorinateddaily maximum≤ 2.7 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)Jun–Oct
BOD, carbonaceous [5 day, 20 C]7-day average≤ 40 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 830 lb/dJan, Feb, Mar, Apr, May, Nov, Dec
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (lb/d)Jun–Oct
BOD, carbonaceous [5 day, 20 C]7-day average≤ 1300 lb/dJan, Feb, Mar, Apr, May, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)Jan, Feb, Mar, Apr, May, Nov, Dec
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)Jun–Oct
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
Carbonaceous oxygen demand, % removalmonthly average minimum≥ 85 %Jan, Feb, Mar, Apr, May, Nov, Dec

How strict are these limits?

Cited limits by parameter: New York's rules and the federal ones.

Check this month's numbers Email me before each report is due

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/NY0024422 · MCP: https://passage-data.com/mcp