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Colonial Beach Town

Sewage treatment plant, major discharger, Colonial Beach, Virginia. NPDES permit VA0026409, in force until Jun 30, 2028. Last 12 months: over a limit 10 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 10 days after each period: form M1 monthly (19 values), form Q1 quarterly (4 values), form A1 yearly
Renewal application due
Jan 2, 2028 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
13 values over a limit, 0 required values missing, 0 of 17 reports late

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

Period endingParameterReportedLimitOver by
December 2025Nitrogen, Total As N, annual average6.61≤ 3 mg/L120%
January 2026Nitrogen, ammonia total [as N], weekly average3.2≤ 1.62 mg/L98%
February 2026Coliform, fecal general, geometric mean1690≤ 200 #/100mL745%
February 2026Enterococci, geometric mean> 208≤ 35 #/100mL—
February 2026Nitrogen, ammonia total [as N], monthly average9.09≤ 1.19 mg/L664%
February 2026Nitrogen, ammonia total [as N], weekly average14.44≤ 1.62 mg/L791%
March 2026Nitrogen, ammonia total [as N], monthly average2.99≤ 1.19 mg/L151%
March 2026Nitrogen, ammonia total [as N], weekly average6.22≤ 1.62 mg/L284%
May 2026Nitrogen, ammonia total [as N], weekly average1.87≤ 1.62 mg/L15%
July 2026Coliform, fecal general, geometric mean> 102≤ 200 #/100mL—

Limits in force (27)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Oxygen, dissolved [DO]daily minimum≥ 6.5 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 21 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 32 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 160 kg/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 240 kg/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 28 mg/Lall year
Solids, total suspendedweekly average≤ 42 mg/Lall year
Solids, total suspendedmonthly average≤ 210 kg/dall year
Solids, total suspendedweekly average≤ 320 kg/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly average≤ 1.19 mg/Lall year
Nitrogen, ammonia total [as N]weekly average≤ 1.62 mg/Lall year
Flow, in conduit or thru treatment plantmonthly average≤ 2 MGD (alert, not enforceable)all year
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD) (alert, not enforceable)all year
BOD, percent removal [total]monthly average minimum≥ 85 %all year
Nitrogen, Total As Nannual average≤ 3 mg/Lall year
Phosphorus, Total As Pannual average≤ .3 mg/Lall year
Enterococcigeometric mean≤ 35 #/100mLall year
Coliform, fecal generalgeometric mean≤ 200 #/100mLall year
Coliform, fecal generalmaximumreport only (#/100mL)all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
TU Static Renewal 7-Day Chronic Americamysis bahia (formerly Mysidopsis bahia)daily maximumreport only (tox chronic)all year
TU Static Renewal 7-Day Chronic Cyprinodon variegatus daily maximumreport only (tox chronic)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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/VA0026409 · MCP: https://passage-data.com/mcp