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Town of Hartford

Sewage treatment plant, Hartford, Vermont. NPDES permit VT0100978 expired Sep 30, 2024; its limits still apply. Last 12 months: over a limit 26 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (28 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
42 values over a limit, 0 required values missing, 0 of 12 reports late

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

All 26 values over a limit
Period endingParameterReportedLimitOver by
October 2025E. coli, thermotol, MF, MTEC, instantaneous maximum690≤ 77 CFU/100mL796%
December 2025E. coli, thermotol, MF, MTEC, instantaneous maximum2400≤ 77 CFU/100mL3017%
January 2026E. coli, thermotol, MF, MTEC, instantaneous maximum2400≤ 77 CFU/100mL3017%
February 2026E. coli, thermotol, MF, MTEC, instantaneous maximum2400≤ 77 CFU/100mL3017%
March 2026BOD, 5-day, percent removal, monthly minimum83.1≥ 85 %13%
March 2026E. coli, thermotol, MF, MTEC, instantaneous maximum2400≤ 77 CFU/100mL3017%
March 2026Solids, settleable, instantaneous maximum68≤ 1 mL/L6700%
March 2026Solids, suspended percent removal, monthly minimum47.5≥ 85 %250%
March 2026Solids, total suspended, daily maximum119.4≤ 50 mg/L139%
March 2026Solids, total suspended, monthly average150.2≤ 75 lb/d100%
March 2026Solids, total suspended, monthly average67.7≤ 30 mg/L126%
March 2026Solids, total suspended, weekly average119.4≤ 45 mg/L165%
March 2026Solids, total suspended, weekly average263.3≤ 113 lb/d133%
April 2026BOD, 5-day, percent removal, monthly minimum84≥ 85 %7%
April 2026E. coli, thermotol, MF, MTEC, instantaneous maximum2400≤ 77 CFU/100mL3017%
April 2026Solids, settleable, instantaneous maximum10≤ 1 mL/L900%
April 2026Solids, suspended percent removal, monthly minimum22.5≥ 85 %417%
April 2026Solids, total suspended, daily maximum228.2≤ 50 mg/L356%
April 2026Solids, total suspended, monthly average185.4≤ 75 lb/d147%
April 2026Solids, total suspended, monthly average67.3≤ 30 mg/L124%
April 2026Solids, total suspended, weekly average228.2≤ 45 mg/L407%
April 2026Solids, total suspended, weekly average681.2≤ 113 lb/d503%
July 2026E. coli, thermotol, MF, MTEC, instantaneous maximum770≤ 77 CFU/100mL900%
July 2026Solids, total suspended, monthly average10.52≤ 10 mg/L5%
August 2026E. coli, thermotol, MF, MTEC, instantaneous maximum1100≤ 77 CFU/100mL1329%
August 2026Solids, total suspended, monthly average12.23≤ 10 mg/L22%

Limits in force (42)

ParameterStatisticLimitMonths
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/LJun–Sep
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, May, Oct, Nov, Dec
BOD, 5-day, 20 deg. Cweekly average≤ 15 mg/LJun–Sep
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/LJan, Feb, Mar, Apr, May, Oct, Nov, Dec
BOD, 5-day, 20 deg. Cdaily maximum≤ 20 mg/LJun–Sep
BOD, 5-day, 20 deg. Cdaily maximum≤ 50 mg/LJan, Feb, Mar, Apr, May, Oct, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 25 lb/dJun–Sep
BOD, 5-day, 20 deg. Cmonthly average≤ 75 lb/dJan, Feb, Mar, Apr, May, Oct, Nov, Dec
BOD, 5-day, 20 deg. Cweekly average≤ 37.5 lb/dJun–Sep
BOD, 5-day, 20 deg. Cweekly average≤ 113 lb/dJan, Feb, Mar, Apr, May, Oct, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 8.5 SUall year
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, May, Oct, Nov, Dec
Solids, total suspendedmonthly average≤ 10 mg/LJun–Sep
Solids, total suspendedweekly average≤ 45 mg/LJan, Feb, Mar, Apr, May, Oct, Nov, Dec
Solids, total suspendedweekly average≤ 15 mg/LJun–Sep
Solids, total suspendeddaily maximum≤ 50 mg/LJan, Feb, Mar, Apr, May, Oct, Nov, Dec
Solids, total suspendeddaily maximum≤ 20 mg/LJun–Sep
Solids, total suspendedmonthly average≤ 75 lb/dJan, Feb, Mar, Apr, May, Oct, Nov, Dec
Solids, total suspendedmonthly average≤ 25 lb/dJun–Sep
Solids, total suspendedweekly average≤ 113 lb/dJan, Feb, Mar, Apr, May, Oct, Nov, Dec
Solids, total suspendedweekly average≤ 37.5 lb/dJun–Sep
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, settleableinstantaneous maximum≤ 1 mL/Lall year
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (lb/d)all year
Nitrogen, total [as N]monthly averagereport only (mg/L)Jul–Sep
Nitrogen, total [as N]annual average≤ 22.5 lb/dDec
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)Jul–Sep
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)Jul–Sep
Phosphorus, total [as P]monthly average≤ 1 mg/LJan, Feb, Mar, Apr, May, Oct, Nov, Dec
Phosphorus, total [as P]monthly average≤ 1 mg/LJun–Sep
Phosphorus, total [as P]monthly average≤ 2.5 lb/dJan, Feb, Mar, Apr, May, Oct, Nov, Dec
Phosphorus, total [as P]monthly average≤ 2.5 lb/dJun–Sep
E. coli, thermotol, MF, MTECinstantaneous maximum≤ 77 CFU/100mLall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantannual average≤ .475 MGDDec
BOD, 5-day, percent removalmonthly minimum≥ 85 %all year
Solids, suspended percent removalmonthly minimum≥ 85 %all year

How strict are these limits?

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

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