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Interlaken (V)

Sewage treatment plant, Interlaken, New York. NPDES permit NY0029289, in force until Nov 30, 2026. Last 12 months: over a limit 32 times (last August 2026), 4 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (22 values)
Renewal application due
Jun 3, 2026 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

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

All 32 values over a limit
Period endingParameterReportedLimitOver by
January 2026Chlorine, total residual, daily maximum.4 mg/L≤ .03 mg/L1233%
February 2026BOD, 5-day, 20 deg. C, daily maximum5.9 mg/L≤ 5 mg/L18%
February 2026Chlorine, total residual, daily maximum.3 mg/L≤ .03 mg/L900%
February 2026Nitrogen, ammonia total [as N], daily maximum22.1 mg/L≤ 1.9 mg/L1063%
February 2026Oxygen, dissolved [DO], daily minimum6.7 mg/L≥ 7 mg/L4%
February 2026Phosphorus, total [as P], monthly average3.48 mg/L≤ .5 mg/L596%
March 2026Chlorine, total residual, daily maximum.4 mg/L≤ .03 mg/L1233%
March 2026Nitrogen, ammonia total [as N], daily maximum8.38 mg/L≤ 1.9 mg/L341%
March 2026Oxygen, dissolved [DO], daily minimum6.63 mg/L≥ 7 mg/L5%
March 2026Phosphorus, total [as P], monthly average2.01 mg/L≤ .5 mg/L302%
April 2026Chlorine, total residual, daily maximum.4 mg/L≤ .03 mg/L1233%
April 2026Coliform, fecal general, 7-day geometric mean791.5 #/100mL≤ 400 #/100mL98%
April 2026Nitrogen, ammonia total [as N], daily maximum10.9 mg/L≤ 1.9 mg/L474%
April 2026Oxygen, dissolved [DO], daily minimum5.63 mg/L≥ 7 mg/L20%
April 2026Phosphorus, total [as P], monthly average1.44 mg/L≤ .5 mg/L188%
May 2026Chlorine, total residual, daily maximum.4 mg/L≤ .03 mg/L1233%
May 2026Coliform, fecal general, 7-day geometric mean980.4 #/100mL≤ 400 #/100mL145%
May 2026Nitrogen, ammonia total [as N], daily maximum11.3 mg/L≤ 1.9 mg/L495%
May 2026Oxygen, dissolved [DO], daily minimum5.63 mg/L≥ 7 mg/L20%
May 2026Phosphorus, total [as P], monthly average2.09 mg/L≤ .5 mg/L318%
June 2026Chlorine, total residual, daily maximum.4 mg/L≤ .03 mg/L1233%
June 2026Nitrogen, ammonia total [as N], daily maximum17.1 mg/L≤ 1.2 mg/L1325%
June 2026Oxygen, dissolved [DO], daily minimum5.36 mg/L≥ 7 mg/L23%
June 2026Phosphorus, total [as P], monthly average2.95 mg/L≤ .5 mg/L490%
July 2026Chlorine, total residual, daily maximum.4 mg/L≤ .03 mg/L1233%
July 2026Coliform, fecal general, 7-day geometric mean2420 #/100mL≤ 400 #/100mL505%
July 2026Nitrogen, ammonia total [as N], daily maximum27.2 mg/L≤ 1.2 mg/L2167%
July 2026Oxygen, dissolved [DO], daily minimum5.71 mg/L≥ 7 mg/L18%
July 2026Phosphorus, total [as P], monthly average4.6 mg/L≤ .5 mg/L820%
August 2026Chlorine, total residual, daily maximum.4 mg/L≤ .03 mg/L1233%
August 2026Oxygen, dissolved [DO], daily minimum5.41 mg/L≥ 7 mg/L23%
August 2026Phosphorus, total [as P], monthly average5.37 mg/L≤ .5 mg/L974%

Limits in force (39)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Oxygen, dissolved [DO]daily minimum≥ 7 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. C7-day average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 5 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 25 lb/dall year
BOD, 5-day, 20 deg. C7-day average≤ 38 lb/dall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 4.2 lb/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year
pHminimum≥ 6.5 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 suspended7-day average≤ 45 mg/Lall year
Solids, total suspendeddaily maximum≤ 10 mg/Lall year
Solids, total suspendedmonthly average≤ 25 lb/dall year
Solids, total suspended7-day average≤ 38 lb/dall year
Solids, total suspendeddaily maximum≤ 8.3 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Solids, settleabledaily maximum≤ .3 mL/Lall year
Solids, settleabledaily maximum≤ .1 mL/Lall year
Solids, settleabledaily maximumreport only (mL/L)all year
Nitrogen, ammonia total [as N]daily maximum≤ 1.9 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 1.2 mg/LJun–Oct
Phosphorus, total [as P]monthly average≤ .5 mg/Lall year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Flow, in conduit or thru treatment plantdaily minimumreport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly average≤ .1 MGDall year
Chlorine, total residualdaily maximum≤ 2 mg/Lall year
Chlorine, total residualdaily maximum≤ .03 mg/Lall year
Coliform, fecal general30-day geometric mean≤ 200 #/100mLall year
Coliform, fecal general7-day geometric mean≤ 400 #/100mLall year
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year

How strict are these limits?

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/NY0029289 · MCP: https://passage-data.com/mcp