Boone County PSD — NPDES permit WV0035939: limits, due date and EPA's record

Sewage treatment plant, Danville, West Virginia. NPDES permit WV0035939, in force until Apr 11, 2027. Last 12 months: over a limit 4 times (last March 2026). Source: EPA ECHO, Oct 22, 2026.

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

Period ending	Outfall	Parameter	Reported	Limit	Over by
December 2025	001	Solids, total suspended, monthly average	537 lb/d	≤ 125.1 lb/d	329%
March 2026	003	Coliform, fecal general, daily maximum	1550 #/100mL	≤ 400 #/100mL	288%
March 2026	003	Coliform, fecal general, monthly geometric mean	1550 #/100mL	≤ 200 #/100mL	675%
March 2026	IU01	Chloride [as Cl], daily maximum	1030 mg/L	≤ 500 mg/L	106%

Limits in force (122)

Parameter	Statistic	Limit	Months	Outfall
Oxygen, dissolved [DO]	instantaneous minimum	≥ 6 mg/L	all year	001
BOD, 5-day, 20 deg. C	monthly average	≤ 15 mg/L	all year	001
BOD, 5-day, 20 deg. C	daily maximum	≤ 30 mg/L	all year	001
BOD, 5-day, 20 deg. C	monthly average	≤ 62.55 lb/d	all year	001
BOD, 5-day, 20 deg. C	daily maximum	≤ 125.1 lb/d	all year	001
pH	instantaneous minimum	≥ 6 SU	all year	001
pH	instantaneous maximum	≤ 9 SU	all year	001
Solids, total suspended	monthly average	≤ 30 mg/L	all year	001
Solids, total suspended	daily maximum	≤ 60 mg/L	all year	001
Solids, total suspended	monthly average	≤ 125.1 lb/d	all year	001
Solids, total suspended	daily maximum	≤ 250.2 lb/d	all year	001
Nitrogen, ammonia total [as N]	monthly average	≤ 2 mg/L	all year	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 4 mg/L	all year	001
Nitrogen, ammonia total [as N]	monthly average	≤ 8.34 lb/d	all year	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 16.68 lb/d	all year	001
Zinc, total recoverable	monthly average	report only (mg/L)	all year	001
Zinc, total recoverable	daily maximum	report only (mg/L)	all year	001
Lead, total recoverable	monthly average	report only (mg/L)	all year	001
Lead, total recoverable	daily maximum	report only (mg/L)	all year	001
Copper, total recoverable	monthly average	report only (mg/L)	all year	001
Copper, total recoverable	daily maximum	report only (mg/L)	all year	001
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	001
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	001
BOD, 5 day percent removal, dry	monthly average minimum	≥ 85 %	all year	001
BOD, 5 day percent removal, wet	monthly average minimum	report only (%)	all year	001
Solids, suspended percent removal, dry	monthly average minimum	≥ 85 %	all year	001
Solids, suspended percent removal, wet	monthly average minimum	report only (%)	all year	001
Coliform, fecal general	monthly geometric mean	≤ 200 #/100mL	all year	001
Coliform, fecal general	daily maximum	≤ 400 #/100mL	all year	001
Oxygen, dissolved [DO]	instantaneous minimum	≥ 7.25 mg/L	all year	002
BOD, 5-day, 20 deg. C	monthly average	≤ 10 mg/L	Jan, Feb, Mar, Apr, Nov, Dec	002
BOD, 5-day, 20 deg. C	monthly average	≤ 5 mg/L	May–Oct	002
BOD, 5-day, 20 deg. C	daily maximum	≤ 20 mg/L	Jan, Feb, Mar, Apr, Nov, Dec	002
BOD, 5-day, 20 deg. C	daily maximum	≤ 10 mg/L	May–Oct	002
BOD, 5-day, 20 deg. C	monthly average	≤ 12.6 lb/d	Jan, Feb, Mar, Apr, Nov, Dec	002
BOD, 5-day, 20 deg. C	monthly average	≤ 6.3 lb/d	May–Oct	002
BOD, 5-day, 20 deg. C	daily maximum	≤ 25.2 lb/d	Jan, Feb, Mar, Apr, Nov, Dec	002
BOD, 5-day, 20 deg. C	daily maximum	≤ 12.6 lb/d	May–Oct	002
pH	instantaneous minimum	≥ 6 SU	all year	002
pH	instantaneous maximum	≤ 9 SU	all year	002
Solids, total suspended	monthly average	≤ 30 mg/L	all year	002
Solids, total suspended	daily maximum	≤ 60 mg/L	all year	002
Solids, total suspended	monthly average	≤ 37.6 lb/d	all year	002
Solids, total suspended	daily maximum	≤ 75.1 lb/d	all year	002
Nitrogen, ammonia total [as N]	monthly average	≤ 1 mg/L	May–Oct	002
Nitrogen, ammonia total [as N]	monthly average	≤ 2 mg/L	Jan, Feb, Mar, Apr, Nov, Dec	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 2 mg/L	May–Oct	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 4 mg/L	Jan, Feb, Mar, Apr, Nov, Dec	002
Nitrogen, ammonia total [as N]	monthly average	≤ 1.25 lb/d	May–Oct	002
Nitrogen, ammonia total [as N]	monthly average	≤ 2.5 lb/d	Jan, Feb, Mar, Apr, Nov, Dec	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 2.5 lb/d	May–Oct	002
Nitrogen, ammonia total [as N]	daily maximum	≤ 5 lb/d	Jan, Feb, Mar, Apr, Nov, Dec	002
Zinc, total recoverable	monthly average	report only (mg/L)	all year	002
Zinc, total recoverable	daily maximum	report only (mg/L)	all year	002
Lead, total recoverable	monthly average	report only (mg/L)	all year	002
Lead, total recoverable	daily maximum	report only (mg/L)	all year	002
Copper, total recoverable	monthly average	report only (mg/L)	all year	002
Copper, total recoverable	daily maximum	report only (mg/L)	all year	002
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	002
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	002
Coliform, fecal general	monthly geometric mean	≤ 200 #/100mL	all year	002
Coliform, fecal general	daily maximum	≤ 400 #/100mL	all year	002
BOD, 5-day, percent removal	monthly average minimum	≥ 85 %	all year	002
Solids, suspended percent removal	monthly average minimum	≥ 85 %	all year	002
BOD, 5-day, 20 deg. C	monthly average	≤ 30 mg/L	all year	003
BOD, 5-day, 20 deg. C	monthly average	≤ 30 mg/L	all year	003
BOD, 5-day, 20 deg. C	daily maximum	≤ 60 mg/L	all year	003
BOD, 5-day, 20 deg. C	daily maximum	≤ 60 mg/L	all year	003
BOD, 5-day, 20 deg. C	monthly average	≤ 3.75 lb/d	all year	003
BOD, 5-day, 20 deg. C	monthly average	≤ 3.75 lb/d	all year	003
BOD, 5-day, 20 deg. C	daily maximum	≤ 7.5 lb/d	all year	003
BOD, 5-day, 20 deg. C	daily maximum	≤ 7.5 lb/d	all year	003
pH	instantaneous minimum	≥ 6 SU	all year	003
pH	instantaneous minimum	≥ 6 SU	all year	003
pH	instantaneous maximum	≤ 9 SU	all year	003
pH	instantaneous maximum	≤ 9 SU	all year	003
Solids, total suspended	monthly average	≤ 30 mg/L	all year	003
Solids, total suspended	monthly average	≤ 30 mg/L	all year	003
Solids, total suspended	daily maximum	≤ 60 mg/L	all year	003
Solids, total suspended	daily maximum	≤ 60 mg/L	all year	003
Solids, total suspended	monthly average	≤ 3.75 lb/d	all year	003
Solids, total suspended	monthly average	≤ 3.75 lb/d	all year	003
Solids, total suspended	daily maximum	≤ 7.5 lb/d	all year	003
Solids, total suspended	daily maximum	≤ 7.5 lb/d	all year	003
Nitrogen, ammonia total [as N]	monthly average	≤ 15 mg/L	all year	003
Nitrogen, ammonia total [as N]	monthly average	≤ 15 mg/L	all year	003
Nitrogen, ammonia total [as N]	daily maximum	≤ 30 mg/L	all year	003
Nitrogen, ammonia total [as N]	daily maximum	≤ 30 mg/L	all year	003
Nitrogen, ammonia total [as N]	monthly average	≤ 1.9 lb/d	all year	003
Nitrogen, ammonia total [as N]	monthly average	≤ 1.9 lb/d	all year	003
Nitrogen, ammonia total [as N]	daily maximum	≤ 3.8 lb/d	all year	003
Nitrogen, ammonia total [as N]	daily maximum	≤ 3.8 lb/d	all year	003
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	003
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	003
Flow, in conduit or thru treatment plant	daily maximum	≤ .015 MGD	all year	003
Flow, in conduit or thru treatment plant	daily maximum	≤ .015 MGD	all year	003
Chlorine, total residual	monthly average	≤ .028 mg/L	all year	003
Chlorine, total residual	monthly average	≤ .028 mg/L	all year	003
Chlorine, total residual	daily maximum	≤ .057 mg/L	all year	003
Chlorine, total residual	daily maximum	≤ .057 mg/L	all year	003
Coliform, fecal general	monthly geometric mean	≤ 200 #/100mL	all year	003
Coliform, fecal general	monthly geometric mean	≤ 200 #/100mL	all year	003
Coliform, fecal general	daily maximum	≤ 400 #/100mL	all year	003
Coliform, fecal general	daily maximum	≤ 400 #/100mL	all year	003
Flow rate	daily maximum	≤ 200 gal/d	all year	IU01
Flow rate	daily maximum	≤ 200 gal/d	all year	IU01
pH	instantaneous minimum	≥ 5 SU	all year	IU01
pH	instantaneous minimum	≥ 5 SU	all year	IU01
pH	instantaneous maximum	≤ 10 SU	all year	IU01
pH	instantaneous maximum	≤ 10 SU	all year	IU01
Solids, total suspended	monthly average	report only (mg/L)	all year	IU01
Solids, total suspended	monthly average	report only (mg/L)	all year	IU01
Solids, total suspended	daily maximum	≤ 200 mg/L	all year	IU01
Solids, total suspended	daily maximum	≤ 200 mg/L	all year	IU01
Oil and grease, hexane extr method	monthly average	report only (mg/L)	all year	IU01
Oil and grease, hexane extr method	monthly average	report only (mg/L)	all year	IU01
Oil and grease, hexane extr method	daily maximum	≤ 100 mg/L	all year	IU01
Oil and grease, hexane extr method	daily maximum	≤ 100 mg/L	all year	IU01
Chloride [as Cl]	monthly average	report only (mg/L)	all year	IU01
Chloride [as Cl]	monthly average	report only (mg/L)	all year	IU01
Chloride [as Cl]	daily maximum	≤ 500 mg/L	all year	IU01
Chloride [as Cl]	daily maximum	≤ 500 mg/L	all year	IU01

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/WV0035939 · MCP: https://passage-data.com/mcp