Carroll County Public Service Authority — NPDES permit VA0092312: limits, due date and EPA's record

Carroll County Public Service Authority

Sewage treatment plant, Lambsburg, Virginia. NPDES permit VA0092312, in force until Mar 31, 2028. Last 12 months: over a limit 32 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due

About 11 days after each period: form M1 monthly (16 values), form A1 yearly

Renewal application due

Oct 3, 2027 · 180 days before expiry; your permit may set another date

Last report on file

August 2026

Oct 2024 – Sep 2025

35 values over a limit, 4 required values missing, 1 of 13 reports late

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

All 32 values over a limit

Period ending	Parameter	Reported	Limit	Over by
October 2025	BOD, 5-day, 20 deg. C, monthly average	15.5	≤ 10 mg/L	55%
October 2025	BOD, 5-day, 20 deg. C, weekly average	15.5	≤ 15 mg/L	3%
October 2025	E. coli, geometric mean	128	≤ 126 #/100mL	2%
October 2025	Oxygen, dissolved [DO], daily minimum	6	≥ 6.5 mg/L	8%
November 2025	BOD, 5-day, 20 deg. C, monthly average	17.4	≤ 10 mg/L	74%
November 2025	BOD, 5-day, 20 deg. C, weekly average	17.4	≤ 15 mg/L	16%
November 2025	E. coli, geometric mean	344	≤ 126 #/100mL	173%
December 2025	BOD, 5-day, 20 deg. C, monthly average	19	≤ 10 mg/L	90%
December 2025	BOD, 5-day, 20 deg. C, weekly average	19	≤ 15 mg/L	27%
December 2025	Oxygen, dissolved [DO], daily minimum	6.1	≥ 6.5 mg/L	6%
January 2026	BOD, 5-day, 20 deg. C, monthly average	16.7	≤ 10 mg/L	67%
January 2026	BOD, 5-day, 20 deg. C, weekly average	16.7	≤ 15 mg/L	11%
February 2026	BOD, 5-day, 20 deg. C, monthly average	23.2	≤ 10 mg/L	132%
February 2026	BOD, 5-day, 20 deg. C, weekly average	23.2	≤ 15 mg/L	55%
February 2026	Nitrogen, ammonia total [as N], monthly average	9.86	≤ 3 mg/L	229%
February 2026	Nitrogen, ammonia total [as N], weekly average	9.86	≤ 3 mg/L	229%
February 2026	Solids, total suspended, monthly average	34.5	≤ 30 mg/L	15%
March 2026	BOD, 5-day, 20 deg. C, monthly average	.95	≤ .76 kg/d	25%
March 2026	BOD, 5-day, 20 deg. C, monthly average	37.7	≤ 10 mg/L	277%
March 2026	BOD, 5-day, 20 deg. C, weekly average	1.24	≤ 1.1 kg/d	13%
March 2026	BOD, 5-day, 20 deg. C, weekly average	40.8	≤ 15 mg/L	172%
April 2026	BOD, 5-day, 20 deg. C, monthly average	15.7	≤ 10 mg/L	57%
April 2026	BOD, 5-day, 20 deg. C, weekly average	15.7	≤ 15 mg/L	5%
May 2026	BOD, 5-day, 20 deg. C, monthly average	13.2	≤ 10 mg/L	32%
June 2026	Oxygen, dissolved [DO], daily minimum	6.2	≥ 6.5 mg/L	5%
July 2026	BOD, 5-day, 20 deg. C, monthly average	16.6	≤ 10 mg/L	66%
July 2026	BOD, 5-day, 20 deg. C, weekly average	16.8	≤ 15 mg/L	12%
July 2026	Oxygen, dissolved [DO], daily minimum	6	≥ 6.5 mg/L	8%
August 2026	BOD, 5-day, 20 deg. C, monthly average	.84	≤ .76 kg/d	11%
August 2026	BOD, 5-day, 20 deg. C, monthly average	17	≤ 10 mg/L	70%
August 2026	BOD, 5-day, 20 deg. C, weekly average	17	≤ 15 mg/L	13%
August 2026	Oxygen, dissolved [DO], daily minimum	6.3	≥ 6.5 mg/L	3%

Limits in force (20)

Parameter	Statistic	Limit	Months
Oxygen, dissolved [DO]	daily minimum	≥ 6.5 mg/L	all year
BOD, 5-day, 20 deg. C	monthly average	≤ 10 mg/L	all year
BOD, 5-day, 20 deg. C	weekly average	≤ 15 mg/L	all year
BOD, 5-day, 20 deg. C	monthly average	≤ .76 kg/d	all year
BOD, 5-day, 20 deg. C	weekly average	≤ 1.1 kg/d	all year
BOD, 5-day, 20 deg. C	monthly average	report only (mg/L)	all year
pH	daily minimum	≥ 6 SU	all year
pH	daily maximum	≤ 9 SU	all year
Solids, total suspended	monthly average	≤ 30 mg/L	all year
Solids, total suspended	weekly average	≤ 45 mg/L	all year
Solids, total suspended	monthly average	≤ 2.3 kg/d	all year
Solids, total suspended	weekly average	≤ 3.4 kg/d	all year
Solids, total suspended	monthly average	report only (mg/L)	all year
Nitrogen, ammonia total [as N]	monthly average	≤ 3 mg/L	all year
Nitrogen, ammonia total [as N]	weekly average	≤ 3 mg/L	all year
Flow, in conduit or thru treatment plant	monthly average	≤ .02 MGD (alert, not enforceable)	all year
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD) (alert, not enforceable)	all year
BOD, percent removal [total]	monthly average minimum	≥ 85 %	all year
E. coli	geometric mean	≤ 126 #/100mL	all year
Solids, suspended percent removal	monthly average minimum	≥ 85 %	all year

How strict are these limits?

BOD, 5-day, 20 deg. C, monthly average 10 mg/L — stricter than 93% of 149 other minor POTWs in Virginia; 1% have the same limit

BOD, 5-day, 20 deg. C, weekly average 15 mg/L — stricter than 93% of 76 other minor POTWs in Virginia; 3% have the same limit

Oxygen, dissolved [DO], daily minimum at least 6.5 mg/L — stricter than 61% of 83 other minor POTWs in Virginia; 20% have the same limit

Your permit document is the final word. As JSON: /api/v1/permits/VA0092312 · MCP: https://passage-data.com/mcp