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

Wellsville (V)

Sewage treatment plant, major discharger, Wellsville, New York. NPDES permit NY0020621 expired May 31, 2020; its limits still apply. Last 12 months: over a limit once (last November 2025), 1 of 27 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (34 values), form V quarterly (4 values), form W monthly (2 values), form T quarterly
Last report on file
August 2026
Oct 2024 – Sep 2025
7 values over a limit, 4 required values missing, 0 of 28 reports late

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

Period endingParameterReportedLimit
November 2025pH, minimum4.8 SU≥ 6 SU

Limits in force (63)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximum≤ 70 deg F (alert, not enforceable)all year
Temperature, water deg. fahrenheitdaily maximumreport only (deg F) (alert, not enforceable)all year
Oxygen demand, ultimatedaily maximum≤ 625 lb/dJun–Oct
Oxygen demand, ultimatedaily maximum≤ 630 lb/dJun–Oct
Oxygen demand, ultimatedaily maximumreport only (lb/d)Jun–Oct
Oxygen, dissolved [DO]daily minimum≥ 5 mg/LJun–Oct
pHminimum≥ 6 SUall year
pHmaximum≤ 8.5 SUall year
pHminimumreport only (SU)all year
pHmaximumreport only (SU)all year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspended7-day average≤ 45 mg/Lall year
Solids, total suspended7-day average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 550 lb/dall year
Solids, total suspendedmonthly average≤ 550 lb/dall year
Solids, total suspended7-day average≤ 826 lb/dall year
Solids, total suspended7-day average≤ 830 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspended7-day averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, total suspended7-day averagereport only (lb/d)all year
Solids, settleabledaily maximum≤ .1 mL/Lall year
Solids, settleabledaily maximumreport only (mL/L)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)Jun–Oct
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year
Copper, total [as Cu]daily maximumreport only (mg/L) (alert, not enforceable)all year
Copper, total [as Cu]daily maximum≤ .4 lb/d (alert, not enforceable)all year
Aluminum, total [as Al]daily maximumreport only (mg/L) (alert, not enforceable)all year
Aluminum, total [as Al]daily maximum≤ 4.5 lb/d (alert, not enforceable)all year
Nitrogen, ammonia, total [as NH3]monthly average≤ 7 mg/LJun–Oct
Nitrogen, ammonia, total [as NH3]monthly averagereport only (mg/L)Jan, Feb, Mar, Apr, May, Nov, Dec
Nitrogen, ammonia, total [as NH3]monthly average≤ 13 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
Nitrogen, ammonia, total [as NH3]monthly averagereport only (mg/L)Jun–Oct
Nitrogen, ammonia, total [as NH3]monthly average≤ 7 mg/LJun–Oct
Nitrogen, ammonia, total [as NH3]monthly average≤ 13 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
Nitrogen, ammonia, total [as NH3]monthly average≤ 128 lb/dJun–Oct
Nitrogen, ammonia, total [as NH3]monthly averagereport only (lb/d)Jan, Feb, Mar, Apr, May, Nov, Dec
Nitrogen, ammonia, total [as NH3]monthly average≤ 239 lb/dJan, Feb, Mar, Apr, May, Nov, Dec
Nitrogen, ammonia, total [as NH3]monthly average≤ 130 lb/dJun–Oct
Nitrogen, ammonia, total [as NH3]monthly average≤ 240 lb/dJan, Feb, Mar, Apr, May, Nov, Dec
Flow, in conduit or thru treatment plantmonthly average≤ 2.2 MGDall year
Toxicity [acute], Ceriodaphnia dubiamaximum≤ .3 tox acute (alert, not enforceable)all year
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 5 tox chronic (alert, not enforceable)all year
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ .3 tox acute (alert, not enforceable)all year
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 5 tox chronic (alert, not enforceable)all year
Phenolic compounds, totalmonthly averagereport only (mg/L)all year
Phenolic compounds, totalmonthly average≤ .46 lb/dall year
Solids, total dissolveddaily maximumreport only (mg/L)all year
Solids, total dissolveddaily maximumreport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 40 mg/Lall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 40 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 459 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 460 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 734 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 730 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]7-day averagereport only (mg/L)all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
Carbonaceous oxygen demand, % removalmonthly average minimum≥ 75 %Jan, Feb, Mar, Apr, May, Nov, Dec
Carbonaceous oxygen demand, % removalmonthly average minimum≥ 85 %Jun–Oct

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/NY0020621 · MCP: https://passage-data.com/mcp