Southern Alleghenies LDFL Inc — NPDES permit PA0093866: limits, due date and EPA's record

Sewerage Systems, Davidsville, Pennsylvania. NPDES permit PA0093866, in force until Jan 31, 2031. Last 12 months: over a limit 61 times (last June 2026), 71 required values missing. Source: EPA ECHO, Oct 22, 2026.

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

Limits in force (175)

Period ending	Outfall	Parameter	Reported	Limit	Over by
October 2025	001	BOD, 5-day, 20 deg. C, monthly average	< 42.5 mg/L	≤ 37 mg/L	15%
October 2025	001	BOD, carbonaceous [5 day, 20 C], monthly average	< 19 mg/L	≤ 15 mg/L	27%
October 2025	001	Nitrogen, ammonia total [as N], daily maximum	34.6 mg/L	≤ 10 mg/L	246%
October 2025	001	Nitrogen, ammonia total [as N], monthly average	31.2 mg/L	≤ 4.9 mg/L	537%
November 2025	001	BOD, carbonaceous [5 day, 20 C], monthly average	< 21.5 mg/L	≤ 15 mg/L	43%
November 2025	001	Boron, total [as B], monthly average	16 mg/L	≤ 13.7 mg/L	17%
November 2025	001	Cyanide, total [as CN], daily maximum	.09 mg/L	≤ .04 mg/L	125%
November 2025	001	Cyanide, total [as CN], monthly average	.07 mg/L	≤ .02 mg/L	250%
November 2025	001	Iron, total [as Fe], monthly average	4.6 mg/L	≤ 2.7 mg/L	70%
November 2025	001	Nitrogen, ammonia total [as N], daily maximum	17.2 mg/L	≤ 10 mg/L	72%
November 2025	001	Nitrogen, ammonia total [as N], monthly average	9 mg/L	≤ 4.9 mg/L	84%
November 2025	001	Solids, total suspended, monthly average	41 mg/L	≤ 27 mg/L	52%
December 2025	001	4,4'-DDT, annual average	< .0099 mg/L	≤ .00001 mg/L	98900%
December 2025	001	4,4'-DDT, daily maximum	< .0099 mg/L	≤ .00002 mg/L	49400%
December 2025	001	BOD, 5-day, 20 deg. C, monthly average	47.2 mg/L	≤ 37 mg/L	28%
December 2025	001	BOD, carbonaceous [5 day, 20 C], monthly average	< 17.5 mg/L	≤ 15 mg/L	17%
December 2025	001	Boron, total [as B], monthly average	16.2 mg/L	≤ 13.7 mg/L	18%
December 2025	001	Cyanide, total [as CN], daily maximum	.062 mg/L	≤ .04 mg/L	55%
December 2025	001	Cyanide, total [as CN], monthly average	.041 mg/L	≤ .02 mg/L	105%
December 2025	001	Hexachlorobenzene, annual average	< .0001 mg/L	≤ .00007 mg/L	43%
December 2025	001	Nitrogen, ammonia total [as N], daily maximum	16 mg/L	≤ 10 mg/L	60%
December 2025	001	Nitrogen, ammonia total [as N], monthly average	14.7 mg/L	≤ 4.9 mg/L	200%
January 2026	001	BOD, carbonaceous [5 day, 20 C], monthly average	< 26 mg/L	≤ 15 mg/L	73%
January 2026	001	Boron, total [as B], monthly average	15.5 mg/L	≤ 13.7 mg/L	13%
January 2026	001	Cyanide, total [as CN], daily maximum	.07 mg/L	≤ .04 mg/L	75%
January 2026	001	Cyanide, total [as CN], monthly average	.05 mg/L	≤ .02 mg/L	150%
January 2026	001	Nitrogen, ammonia total [as N], daily maximum	23.7 mg/L	≤ 10 mg/L	137%
January 2026	001	Nitrogen, ammonia total [as N], monthly average	18.9 mg/L	≤ 4.9 mg/L	286%
February 2026	001	Cyanide, total [as CN], daily maximum	.11 mg/L	≤ .04 mg/L	175%
February 2026	001	Cyanide, total [as CN], monthly average	< .048 mg/L	≤ .02 mg/L	140%
February 2026	001	Iron, total [as Fe], monthly average	1.87 mg/L	≤ 1.5 mg/L	25%
February 2026	001	Nitrogen, ammonia total [as N], daily maximum	29.3 mg/L	≤ 10 mg/L	193%
February 2026	001	Nitrogen, ammonia total [as N], monthly average	27.1 mg/L	≤ 4.9 mg/L	453%
February 2026	002	Aluminum, total [as Al], daily maximum	2.8 mg/L	≤ .75 mg/L	273%
March 2026	001	BOD, carbonaceous [5 day, 20 C], daily maximum	> 70.6 mg/L	≤ 30 mg/L	—
March 2026	001	BOD, carbonaceous [5 day, 20 C], monthly average	> 37.8 mg/L	≤ 15 mg/L	—
March 2026	001	Cyanide, total [as CN], daily maximum	.066 mg/L	≤ .04 mg/L	65%
March 2026	001	Cyanide, total [as CN], monthly average	.057 mg/L	≤ .02 mg/L	185%
March 2026	001	Iron, total [as Fe], monthly average	1.81 mg/L	≤ 1.5 mg/L	21%
March 2026	001	Nitrogen, ammonia total [as N], daily maximum	92.4 mg/L	≤ 10 mg/L	824%
March 2026	001	Nitrogen, ammonia total [as N], monthly average	53.5 mg/L	≤ 4.9 mg/L	992%
April 2026	001	BOD, 5-day, 20 deg. C, monthly average	101 mg/L	≤ 37 mg/L	173%
April 2026	001	BOD, carbonaceous [5 day, 20 C], daily maximum	123 mg/L	≤ 30 mg/L	310%
April 2026	001	BOD, carbonaceous [5 day, 20 C], monthly average	117.5 mg/L	≤ 15 mg/L	683%
April 2026	001	Cyanide, total [as CN], daily maximum	.13 mg/L	≤ .04 mg/L	225%
April 2026	001	Cyanide, total [as CN], monthly average	.099 mg/L	≤ .02 mg/L	395%
April 2026	001	Iron, total [as Fe], monthly average	1.73 mg/L	≤ 1.5 mg/L	15%
April 2026	001	Nitrogen, ammonia total [as N], monthly average	6.2 mg/L	≤ 4.9 mg/L	27%
May 2026	001	BOD, 5-day, 20 deg. C, monthly average	39 mg/L	≤ 37 mg/L	5%
May 2026	001	BOD, carbonaceous [5 day, 20 C], daily maximum	> 68.6 mg/L	≤ 30 mg/L	—
May 2026	001	BOD, carbonaceous [5 day, 20 C], monthly average	> 46.3 mg/L	≤ 15 mg/L	—
May 2026	001	Cyanide, total [as CN], daily maximum	.123 mg/L	≤ .04 mg/L	208%
May 2026	001	Cyanide, total [as CN], monthly average	.2 mg/L	≤ .02 mg/L	900%
May 2026	001	Iron, total [as Fe], monthly average	2.36 mg/L	≤ 1.5 mg/L	57%
May 2026	001	Mercury, total [as Hg], daily maximum	.039 mg/L	≤ .0018 mg/L	2067%
May 2026	001	Mercury, total [as Hg], monthly average	< .0099 mg/L	≤ .0009 mg/L	1000%
June 2026	001	Cyanide, total [as CN], daily maximum	.066 mg/L	≤ .04 mg/L	65%
June 2026	001	Cyanide, total [as CN], monthly average	< .058 mg/L	≤ .02 mg/L	190%
June 2026	001	Iron, total [as Fe], monthly average	1.69 mg/L	≤ 1.5 mg/L	13%
June 2026	001	Mercury, total [as Hg], daily maximum	.0276 mg/L	≤ .0018 mg/L	1433%
June 2026	001	Mercury, total [as Hg], monthly average	< .0061 mg/L	≤ .0009 mg/L	578%

Parameter	Statistic	Limit	Months	Outfall
BOD, 5-day, 20 deg. C	monthly average	≤ 37 mg/L	all year	001
BOD, 5-day, 20 deg. C	daily maximum	≤ 140 mg/L	all year	001
pH	instantaneous minimum	≥ 6 SU	all year	001
pH	instantaneous maximum	≤ 9 SU	all year	001
Solids, total suspended	monthly average	≤ 27 mg/L	all year	001
Solids, total suspended	daily maximum	≤ 88 mg/L	all year	001
Oil & Grease	quarterly average	≤ 15 mg/L	all year	001
Oil & Grease	instantaneous maximum	≤ 30 mg/L	all year	001
Nitrogen, total [as N]	monthly average	report only (mg/L)	all year	001
Nitrogen, total [as N]	daily maximum	report only (mg/L)	all year	001
Nitrogen, ammonia total [as N]	monthly average	≤ 4.9 mg/L	all year	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 10 mg/L	all year	001
Cyanide, total [as CN]	monthly average	≤ .02 mg/L	all year	001
Cyanide, total [as CN]	daily maximum	≤ .04 mg/L	all year	001
Arsenic, total [as As]	quarterly average	≤ .05 mg/L	all year	001
Arsenic, total [as As]	daily maximum	≤ .1 mg/L	all year	001
Barium, total [as Ba]	monthly average	≤ .1 mg/L	all year	001
Barium, total [as Ba]	daily maximum	≤ .2 mg/L	all year	001
Beryllium, total [as Be]	annual average	≤ .001 mg/L	all year	001
Beryllium, total [as Be]	daily maximum	≤ .002 mg/L	all year	001
Boron, total [as B]	monthly average	≤ 13.7 mg/L	all year	001
Boron, total [as B]	daily maximum	≤ 27.4 mg/L	all year	001
Chromium, hexavalent [as Cr]	quarterly average	≤ .15 mg/L	all year	001
Chromium, hexavalent [as Cr]	daily maximum	≤ .23 mg/L	all year	001
Cobalt, total [as Co]	monthly average	≤ .05 mg/L	all year	001
Cobalt, total [as Co]	daily maximum	≤ .1 mg/L	all year	001
Iron, total [as Fe]	monthly average	≤ 1.5 mg/L	all year	001
Iron, total [as Fe]	daily maximum	≤ 3 mg/L	all year	001
Manganese, total [as Mn]	monthly average	≤ 1 mg/L	all year	001
Manganese, total [as Mn]	daily maximum	≤ 2 mg/L	all year	001
Nickel, total [as Ni]	monthly average	≤ .3 mg/L	all year	001
Nickel, total [as Ni]	daily maximum	≤ .6 mg/L	all year	001
Silver, total [as Ag]	annual average	≤ .01 mg/L	all year	001
Silver, total [as Ag]	daily maximum	≤ .02 mg/L	all year	001
Vanadium, total [as V]	annual average	≤ .009 mg/L	all year	001
Vanadium, total [as V]	daily maximum	≤ .018 mg/L	all year	001
Zinc, total [as Zn]	monthly average	≤ .11 mg/L	all year	001
Zinc, total [as Zn]	daily maximum	≤ .2 mg/L	all year	001
Tin, total [as Sn]	annual average	≤ .8 mg/L	all year	001
Tin, total [as Sn]	daily maximum	≤ 1.6 mg/L	all year	001
Aluminum, total [as Al]	monthly average	≤ .275 mg/L	all year	001
Aluminum, total [as Al]	daily maximum	≤ .55 mg/L	all year	001
Selenium, total [as Se]	annual average	≤ .075 mg/L	all year	001
Selenium, total [as Se]	daily maximum	≤ .15 mg/L	all year	001
Chloroform	annual average	≤ .01 mg/L	all year	001
Chloroform	daily maximum	≤ .02 mg/L	all year	001
Toluene	annual average	≤ .05 mg/L	all year	001
Toluene	daily maximum	≤ .1 mg/L	all year	001
Benzene	annual average	≤ .05 mg/L	all year	001
Benzene	daily maximum	≤ .1 mg/L	all year	001
Butyl benzyl phthalate	annual average	≤ .01 mg/L	all year	001
Butyl benzyl phthalate	daily maximum	≤ .02 mg/L	all year	001
Chlorobenzene	annual average	≤ .05 mg/L	all year	001
Chlorobenzene	daily maximum	≤ .1 mg/L	all year	001
Diethyl phthalate	annual average	≤ .025 mg/L	all year	001
Diethyl phthalate	daily maximum	≤ .05 mg/L	all year	001
Isophorone	annual average	≤ .05 mg/L	all year	001
Isophorone	daily maximum	≤ .1 mg/L	all year	001
Methyl chloride [Chloromethane]	annual average	≤ .1 mg/L	all year	001
Methyl chloride [Chloromethane]	daily maximum	≤ .2 mg/L	all year	001
Methylene chloride	quarterly average	≤ .1 mg/L	all year	001
Methylene chloride	daily maximum	≤ .2 mg/L	all year	001
1,1-Dichloroethane	annual average	≤ .09 mg/L	all year	001
1,1-Dichloroethane	daily maximum	≤ .18 mg/L	all year	001
1,1,1-Trichloroethane	annual average	≤ .1 mg/L	all year	001
1,1,1-Trichloroethane	daily maximum	≤ .2 mg/L	all year	001
trans-1,2-Dichloroethylene	annual average	≤ .03 mg/L	all year	001
trans-1,2-Dichloroethylene	daily maximum	≤ .06 mg/L	all year	001
2-Chloronaphthalene	annual average	≤ .01 mg/L	all year	001
2-Chloronaphthalene	daily maximum	≤ .02 mg/L	all year	001
Phenol	monthly average	≤ .015 mg/L	all year	001
Phenol	daily maximum	≤ .026 mg/L	all year	001
Dibromomethane [Methylene Bromide]	annual average	≤ .01 mg/L	all year	001
Dibromomethane [Methylene Bromide]	daily maximum	≤ .02 mg/L	all year	001
Benzidine	annual average	≤ .0005 mg/L	all year	001
Benzidine	daily maximum	≤ .001 mg/L	all year	001
4,4'-DDT	annual average	≤ .00001 mg/L	all year	001
4,4'-DDT	daily maximum	≤ .00002 mg/L	all year	001
.gamma.-BHC	annual average	≤ .01 mg/L	all year	001
.gamma.-BHC	daily maximum	≤ .02 mg/L	all year	001
Hexachlorobenzene	annual average	≤ .00007 mg/L	all year	001
Hexachlorobenzene	daily maximum	≤ .000175 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
Chlorine, total residual	monthly average	≤ .5 mg/L	all year	001
Chlorine, total residual	daily maximum	≤ 1 mg/L	all year	001
Acrylamide	monthly average	report only (mg/L)	all year	001
Acrylamide	daily maximum	report only (mg/L)	all year	001
Perfluorooctanoic acid (PFOA)	daily maximum	report only (ng/L)	all year	001
Perfluorooctanesulfonate	daily maximum	report only (ng/L)	all year	001
Perfluorobutanesulfonic acid (PFBS)	daily maximum	report only (ng/L)	all year	001
Hexafluoropropylene oxide dimer acid (HFPO-DA)	daily maximum	report only (ng/L)	all year	001
Solids, total dissolved	monthly average	report only (mg/L)	all year	001
Solids, total dissolved	daily maximum	report only (mg/L)	all year	001
Mercury, total [as Hg]	monthly average	≤ .0009 mg/L	all year	001
Mercury, total [as Hg]	daily maximum	≤ .0018 mg/L	all year	001
Coliform, fecal general	geometric mean	≤ 200 #/100mL	May–Sep	001
Coliform, fecal general	geometric mean	≤ 2000 #/100mL	Jan, Feb, Mar, Apr, Oct, Nov, Dec	001
p-Cresol	monthly average	≤ .014 mg/L	all year	001
p-Cresol	daily maximum	≤ .025 mg/L	all year	001
Benzoic acids, total	monthly average	≤ .071 mg/L	all year	001
Benzoic acids, total	daily maximum	≤ .12 mg/L	all year	001
1,2,3-Trichloropropane	annual average	≤ .1 mg/L	all year	001
1,2,3-Trichloropropane	daily maximum	≤ .2 mg/L	all year	001
.alpha.-Terpineol	monthly average	≤ .016 mg/L	all year	001
.alpha.-Terpineol	daily maximum	≤ .033 mg/L	all year	001
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 15 mg/L	all year	001
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 30 mg/L	all year	001
Xylene [mix of m+o+p]	annual average	≤ .01 mg/L	all year	001
Xylene [mix of m+o+p]	daily maximum	≤ .02 mg/L	all year	001
Oxygen demand, chem. [high level] [COD]	daily maximum	report only (mg/L)	all year	002
pH	daily maximum	report only (SU)	all year	002
Solids, total suspended	daily maximum	report only (mg/L)	all year	002
Nitrogen, total [as N]	daily maximum	report only (mg/L)	all year	002
Nitrogen, ammonia total [as N]	daily maximum	report only (mg/L)	all year	002
Nitrite + Nitrate total [as N]	daily maximum	report only (mg/L)	all year	002
Phosphorus, total [as P]	daily maximum	report only (mg/L)	all year	002
Barium, total [as Ba]	daily maximum	report only (mg/L)	all year	002
Iron, total [as Fe]	daily maximum	≤ 3 mg/L	all year	002
Manganese, total [as Mn]	daily maximum	≤ 1 mg/L	all year	002
Aluminum, total [as Al]	daily maximum	≤ .75 mg/L	all year	002
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	002
Solids, total dissolved	daily maximum	report only (mg/L)	all year	002
Oxygen demand, chem. [high level] [COD]	daily maximum	report only (mg/L)	all year	003
pH	daily maximum	report only (SU)	all year	003
Solids, total suspended	daily maximum	report only (mg/L)	all year	003
Nitrogen, total [as N]	daily maximum	report only (mg/L)	all year	003
Nitrogen, ammonia total [as N]	daily maximum	report only (mg/L)	all year	003
Nitrite + Nitrate total [as N]	daily maximum	report only (mg/L)	all year	003
Phosphorus, total [as P]	daily maximum	report only (mg/L)	all year	003
Barium, total [as Ba]	daily maximum	report only (mg/L)	all year	003
Iron, total [as Fe]	daily maximum	≤ 3 mg/L	all year	003
Manganese, total [as Mn]	daily maximum	≤ 1 mg/L	all year	003
Aluminum, total [as Al]	daily maximum	≤ .75 mg/L	all year	003
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	003
Solids, total dissolved	daily maximum	report only (mg/L)	all year	003
Oxygen demand, chem. [high level] [COD]	daily maximum	report only (mg/L)	all year	004
pH	daily maximum	report only (SU)	all year	004
Solids, total suspended	daily maximum	report only (mg/L)	all year	004
Nitrogen, total [as N]	daily maximum	report only (mg/L)	all year	004
Nitrogen, ammonia total [as N]	daily maximum	report only (mg/L)	all year	004
Nitrite + Nitrate total [as N]	daily maximum	report only (mg/L)	all year	004
Phosphorus, total [as P]	daily maximum	report only (mg/L)	all year	004
Barium, total [as Ba]	daily maximum	report only (mg/L)	all year	004
Iron, total [as Fe]	daily maximum	≤ 3 mg/L	all year	004
Manganese, total [as Mn]	daily maximum	≤ 1 mg/L	all year	004
Aluminum, total [as Al]	daily maximum	≤ .75 mg/L	all year	004
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	004
Solids, total dissolved	daily maximum	report only (mg/L)	all year	004
Oxygen demand, chem. [high level] [COD]	daily maximum	report only (mg/L)	all year	005
pH	daily maximum	report only (SU)	all year	005
Solids, total suspended	daily maximum	report only (mg/L)	all year	005
Nitrogen, total [as N]	daily maximum	report only (mg/L)	all year	005
Nitrogen, ammonia total [as N]	daily maximum	report only (mg/L)	all year	005
Nitrite + Nitrate total [as N]	daily maximum	report only (mg/L)	all year	005
Phosphorus, total [as P]	daily maximum	report only (mg/L)	all year	005
Barium, total [as Ba]	daily maximum	report only (mg/L)	all year	005
Iron, total [as Fe]	daily maximum	≤ 3 mg/L	all year	005
Manganese, total [as Mn]	daily maximum	≤ 1 mg/L	all year	005
Aluminum, total [as Al]	daily maximum	≤ .75 mg/L	all year	005
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	005
Solids, total dissolved	daily maximum	report only (mg/L)	all year	005
Oxygen demand, chem. [high level] [COD]	daily maximum	report only (mg/L)	all year	006
pH	daily maximum	report only (SU)	all year	006
Solids, total suspended	daily maximum	report only (mg/L)	all year	006
Nitrogen, total [as N]	daily maximum	report only (mg/L)	all year	006
Nitrogen, ammonia total [as N]	daily maximum	report only (mg/L)	all year	006
Nitrite + Nitrate total [as N]	daily maximum	report only (mg/L)	all year	006
Phosphorus, total [as P]	daily maximum	report only (mg/L)	all year	006
Barium, total [as Ba]	daily maximum	report only (mg/L)	all year	006
Iron, total [as Fe]	daily maximum	≤ 3 mg/L	all year	006
Manganese, total [as Mn]	daily maximum	≤ 1 mg/L	all year	006
Aluminum, total [as Al]	daily maximum	≤ .75 mg/L	all year	006
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	006
Solids, total dissolved	daily maximum	report only (mg/L)	all year	006

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/PA0093866 · MCP: https://passage-data.com/mcp