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

Amherst Town

Sewage treatment plant, Amherst, Virginia. NPDES permit VA0031321, in force until Nov 30, 2029. Last 12 months: over a limit 8 times (last August 2026), 12 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 10 days after each period: form M1 monthly (15 values), form Q1 quarterly (6 values), form A1 yearly, form S1 twice a year
Last report on file
August 2026
Oct 2024 – Sep 2025
7 values over a limit, 0 required values missing, 2 of 16 reports late

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

Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], monthly average9.5≤ 9.1 mg/L4%
October 2025Nitrogen, ammonia total [as N], maximum weekly average15.4≤ 9.1 mg/L69%
November 2025Solids, total suspended, maximum weekly average87.1≤ 45 mg/L94%
December 2025Nitrogen, Total As N, year-to-date total4697.5≤ 8 lb/yr58619%
December 2025Phosphorus, Total As P, year-to-date total449.86≤ 1 lb/yr44886%
May 2026Nitrogen, ammonia total [as N], monthly average7.6≤ 6.6 mg/L15%
May 2026Nitrogen, ammonia total [as N], weekly average11.3≤ 6.6 mg/L71%
August 2026Nitrogen, ammonia total [as N], maximum weekly average11.5≤ 9.1 mg/L26%

Limits in force (43)

ParameterStatisticLimitMonths
BOD, 5-day, 20 deg. Cmonthly average≤ 7.4 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 7.4 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 11.1 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 11.1 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 16.8 kg/dall year
BOD, 5-day, 20 deg. Cmonthly average≤ 16.8 kg/dall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 25.2 kg/dall year
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 25.2 kg/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cweekly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cweekly averagereport only (mg/L)all year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 68.1 kg/dall year
Solids, total suspendedmonthly average≤ 68.1 kg/dall year
Solids, total suspendedmaximum weekly average≤ 102.1 kg/dall year
Solids, total suspendedmaximum weekly average≤ 102.1 kg/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedweekly averagereport only (mg/L)all year
Solids, total suspendedweekly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly average≤ 9.1 mg/LJun–Nov
Nitrogen, ammonia total [as N]monthly average≤ 6.6 mg/LJan, Feb, Mar, Apr, May, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 9.1 mg/LJun–Nov
Nitrogen, ammonia total [as N]weekly average≤ 6.6 mg/LJan, Feb, Mar, Apr, May, Dec
Copper, dissolved [as Cu]monthly averagereport only (ug/L)all year
Copper, dissolved [as Cu]weekly averagereport only (ug/L)all year
Lead, dissolved [as Pb]monthly averagereport only (ug/L)all year
Lead, dissolved [as Pb]weekly averagereport only (ug/L)all year
Zinc, dissolved [as Zn]monthly averagereport only (ug/L)all year
Zinc, dissolved [as Zn]weekly averagereport only (ug/L)all year
Flow, in conduit or thru treatment plantmonthly average≤ .6 MGD (alert, not enforceable)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD) (alert, not enforceable)all year
BOD, percent removal [total]monthly average minimum≥ 85 %all year
E. colimonthly average≤ 126 #/100mLall year
Nitrogen, Total As Nyear-to-date total≤ 8 lb/yrall year
Phosphorus, Total As Pyear-to-date total≤ 1 lb/yrall year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year

How strict are these limits?

Cited limits by parameter: Virginia'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/VA0031321 · MCP: https://passage-data.com/mcp