Clark Public Utilities — NPDES permit WA0040932: limits, due date and EPA's record

Electric Services, Vancouver, Washington. NPDES permit WA0040932, in force until Jun 30, 2030. Last 12 months: over a limit 10 times (last June 2026), 20 of 55 reports late. Source: EPA ECHO, Oct 22, 2026.

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

Period ending	Parameter	Reported	Limit	Over by
December 2025	Arsenic, total [as As], daily maximum	5.1	≤ .1 ug/L	5000%
December 2025	Chromium, hexavalent dissolved [as Cr], daily maximum	1.4	≤ .3 ug/L	367%
December 2025	Copper, total [as Cu], daily maximum	2.7	≤ .4 ug/L	575%
December 2025	Di[2-ethylhexyl] phthalate [DEHP], daily maximum	3.8	≤ 2.5 ug/L	52%
December 2025	Lead, total [as Pb], daily maximum	.29	≤ .1 ug/L	190%
December 2025	Mercury, total [as Hg], daily maximum	9.52	≤ .0002 ng/L	—
June 2026	Arsenic, total [as As], daily maximum	2.8	≤ .1 ug/L	2700%
June 2026	Chromium, hexavalent dissolved [as Cr], daily maximum	.92	≤ .3 ug/L	207%
June 2026	Copper, total [as Cu], daily maximum	6.3	≤ .4 ug/L	1475%
June 2026	Mercury, total [as Hg], daily maximum	36.6	≤ .0002 ng/L	—

Limits in force (242)

Parameter	Statistic	Limit	Months	Outfall
Temperature, water deg. centigrade	daily maximum	report only (deg C) (alert, not enforceable)	all year	001
Zinc, total [as Zn]	monthly average	report only (ug/L) (alert, not enforceable)	all year	001
PCB-1016	maximum	≤ .5 ug/L	all year	001
PCB-1221	maximum	≤ .5 ug/L	all year	001
PCB-1232	maximum	≤ .5 ug/L	all year	001
PCB-1242	maximum	≤ .5 ug/L	all year	001
PCB-1248	maximum	≤ .5 ug/L	all year	001
PCB-1254	maximum	≤ .5 ug/L	all year	001
PCB-1260	maximum	≤ .5 ug/L	all year	001
Halogen, total residual	monthly average	report only (mg/L) (alert, not enforceable)	all year	001
pH, maximum	daily maximum	≤ 8.5 SU	all year	001
pH, minimum	daily minimum	≥ 6.5 SU	all year	001
Flow	daily maximum	≤ .701 MGD	all year	001
Cyanide, total [as CN]	daily maximum	≤ 5 ug/L	all year	002
Sulfide, total [as S]	maximum	report only (mg/L) (alert, not enforceable)	all year	002
Chloride [as Cl]	maximum	report only (mg/L) (alert, not enforceable)	all year	002
Arsenic, total [as As]	daily maximum	≤ .1 ug/L	all year	002
Beryllium, total [as Be]	daily maximum	≤ .1 ug/L	all year	002
Cadmium, total [as Cd]	daily maximum	≤ .05 ug/L	all year	002
Chromium, total [as Cr]	daily maximum	≤ 200 ug/L	all year	002
Chromium, total [as Cr]	monthly average	≤ 200 ug/L	all year	002
Copper, total [as Cu]	daily maximum	≤ .4 ug/L	all year	002
Lead, total [as Pb]	daily maximum	≤ .1 ug/L	all year	002
Thallium, total [as Tl]	daily maximum	≤ .09 ug/L	all year	002
Nickel, total [as Ni]	daily maximum	≤ .1 ug/L	all year	002
Silver, total [as Ag]	daily maximum	≤ .04 ug/L	all year	002
Zinc, total [as Zn]	daily maximum	≤ 1000 ug/L	all year	002
Zinc, total [as Zn]	monthly average	≤ 1000 ug/L	all year	002
Antimony, total [as Sb]	daily maximum	≤ .3 ug/L	all year	002
Selenium, total [as Se]	daily maximum	≤ 1 ug/L	all year	002
Chromium, hexavalent dissolved [as Cr]	daily maximum	≤ .3 ug/L	all year	002
Dichlorobromomethane	daily maximum	≤ 2.2 ug/L	all year	002
Carbon tetrachloride	daily maximum	≤ 2.8 ug/L	all year	002
1,2-Dichloroethane	single reading	report only (ug/L) (alert, not enforceable)	all year	002
Bromoform	daily maximum	≤ 4.7 ug/L	all year	002
Dibromochloromethane	daily maximum	≤ 3.1 ug/L	all year	002
Chloroform	daily maximum	≤ 1.6 ug/L	all year	002
Toluene	daily maximum	≤ 6 ug/L	all year	002
Benzene	daily maximum	≤ 4.4 ug/L	all year	002
Phenolics, total	single reading	report only (ug/L) (alert, not enforceable)	all year	002
Acenaphthylene	daily maximum	≤ 3.5 ug/L	all year	002
Acenaphthene	daily maximum	≤ 1.9 ug/L	all year	002
Acrolein	daily maximum	≤ 5 ug/L	all year	002
Acrylonitrile	daily maximum	≤ 1 ug/L	all year	002
Anthracene	daily maximum	≤ 1.9 ug/L	all year	002
Benzo[b]fluoranthene	daily maximum	≤ 4.8 ug/L	all year	002
Benzo[k]fluoranthene	daily maximum	≤ 2.5 ug/L	all year	002
Benzo[a]pyrene	daily maximum	≤ 2.5 ug/L	all year	002
Bis[2-chloroethyl] ether	daily maximum	≤ 5.7 ug/L	all year	002
Bis[2-chloroethoxy]methane	daily maximum	≤ 5.3 ug/L	all year	002
Bis[2-chloroisopropyl] ether	daily maximum	≤ 5.7 ug/L	all year	002
Butyl benzyl phthalate	daily maximum	≤ 2.5 ug/L	all year	002
Chlorobenzene	daily maximum	≤ 6 ug/L	all year	002
Chrysene	daily maximum	≤ 2.5 ug/L	all year	002
Diethyl phthalate	daily maximum	≤ 1.9 ug/L	all year	002
Dimethyl phthalate	daily maximum	≤ 1.6 ug/L	all year	002
1,2-Diphenylhydrazine	daily maximum	≤ 5 ug/L	all year	002
Ethylbenzene	daily maximum	≤ 7.2 ug/L	all year	002
Fluoranthene	daily maximum	≤ 2.2 ug/L	all year	002
Fluorene	daily maximum	≤ 1.9 ug/L	all year	002
Hexachlorocyclopentadiene	daily maximum	≤ 2 ug/L	all year	002
Hexachloroethane	daily maximum	≤ 1.6 ug/L	all year	002
Indeno[1,2,3-cd]pyrene	daily maximum	≤ 3.7 ug/L	all year	002
Isophorone	daily maximum	≤ 2.2 ug/L	all year	002
Methyl bromide [Bromomethane]	daily maximum	≤ 5 ug/L	all year	002
Methyl chloride [Chloromethane]	daily maximum	≤ 1 ug/L	all year	002
Methylene chloride	daily maximum	≤ 2.8 ug/L	all year	002
N-Nitrosodi-N-propylamine	daily maximum	≤ .5 ug/L	all year	002
N-Nitrosodiphenylamine	daily maximum	≤ 1 ug/L	all year	002
N-Nitrosodimethylamine [NDMA]	daily maximum	≤ 2 ug/L	all year	002
Nitrobenzene	daily maximum	≤ 1.9 ug/L	all year	002
Phenanthrene	daily maximum	≤ 5.4 ug/L	all year	002
Pyrene	daily maximum	≤ 1.9 ug/L	all year	002
Tetrachloroethylene	daily maximum	≤ 4.1 ug/L	all year	002
1,1-Dichloroethane	daily maximum	≤ 4.7 ug/L	all year	002
1,1-Dichloroethylene	daily maximum	≤ 2.8 ug/L	all year	002
1,1,1-Trichloroethane	daily maximum	≤ 3.8 ug/L	all year	002
1,1,2-Trichloroethane	daily maximum	≤ 5 ug/L	all year	002
1,1,2,2-Tetrachloroethane	daily maximum	≤ 6.9 ug/L	all year	002
Benzo[ghi]perylene	daily maximum	≤ 4.1 ug/L	all year	002
Benzo[a]anthracene	daily maximum	≤ 7.8 ug/L	all year	002
1,2-Dichlorobenzene	daily maximum	≤ 1.9 ug/L	all year	002
1,2-Dichloropropane	daily maximum	≤ 6 ug/L	all year	002
trans-1,2-Dichloroethylene	daily maximum	≤ 1.6 ug/L	all year	002
1,2,4-Trichlorobenzene	daily maximum	≤ 1.9 ug/L	all year	002
Dibenz[a,h]anthracene	daily maximum	≤ 2.5 ug/L	all year	002
1,3-Dichlorobenzene	daily maximum	≤ 1.9 ug/L	all year	002
1,4-Dichlorobenzene	daily maximum	≤ 4.4 ug/L	all year	002
2-Chloroethyl vinyl ether, [mixed]	daily maximum	≤ 1 ug/L	all year	002
2-Chloronaphthalene	daily maximum	≤ 1.9 ug/L	all year	002
2-Chlorophenol	daily maximum	≤ 3.3 ug/L	all year	002
Di-n-octyl phthalate	daily maximum	≤ 2.5 ug/L	all year	002
2,4-Dimethylphenol	daily maximum	≤ 2.7 ug/L	all year	002
2,4-Dinitrotoluene	daily maximum	≤ 5.7 ug/L	all year	002
2,4,6-Trichlorophenol	daily maximum	≤ 2.7 ug/L	all year	002
2,6-Dinitrotoluene	daily maximum	≤ 1.9 ug/L	all year	002
3,3'-Dichlorobenzidine	daily maximum	≤ 16.5 ug/L	all year	002
4-Bromophenyl phenyl ether	daily maximum	≤ 1.9 ug/L	all year	002
4-Chlorophenyl phenyl ether	daily maximum	≤ 4.2 ug/L	all year	002
4-Nitrophenol	single reading	report only (ug/L) (alert, not enforceable)	all year	002
4,6-Dinitro-o-cresol	daily maximum	≤ 24 ug/L	all year	002
2,3,7,8-Tetrachlorodibenzo-p-dioxin	daily maximum	≤ 1.3 pg/L	all year	002
Naphthalene	daily maximum	≤ 1.6 ug/L	all year	002
Pentachlorophenol	daily maximum	≤ 3.6 ug/L	all year	002
Di[2-ethylhexyl] phthalate [DEHP]	daily maximum	≤ 2.5 ug/L	all year	002
Di-n-butyl phthalate	daily maximum	≤ 2.5 ug/L	all year	002
Benzidine	daily maximum	≤ 44 ug/L	all year	002
Vinyl chloride	daily maximum	≤ 1 ug/L	all year	002
Hexachlorobenzene	daily maximum	≤ 1.9 ug/L	all year	002
Hexachlorobutadiene	daily maximum	≤ .9 ug/L	all year	002
Phenols	daily maximum	≤ 1.5 ug/L	all year	002
Dibenz[a,h]acridine	daily maximum	≤ 2.5 ug/L	all year	002
Dibenzo[a,e]pyrene	daily maximum	≤ 2.5 ug/L	all year	002
Dibenzo[a,h]pyrene	daily maximum	≤ 2.5 ug/L	all year	002
Halogen, total residual	daily maximum	≤ .5 mg/L	all year	002
Halogen, total residual	monthly average	≤ .2 mg/L	all year	002
3-Methylcholanthrene	daily maximum	≤ 2 ug/L	all year	002
4-Chloro-3-methylphenol	daily maximum	≤ 3 ug/L	all year	002
Mercury, total [as Hg]	daily maximum	≤ .0002 ng/L	all year	002
Dibenz[a,j]acridine	daily maximum	≤ 2.5 ug/L	all year	002
Benzo[rst]pentaphene	daily maximum	≤ 1.3 ug/L	all year	002
1,3-Dichloropropene	daily maximum	≤ 5 ug/L	all year	002
Perylene	daily maximum	≤ 1.9 ug/L	all year	002
Benzo[j]fluoranthene	daily maximum	≤ .5 ug/L	all year	002
Trichloroethene	daily maximum	≤ 1.9 ug/L	all year	002
Chloroethane	daily maximum	≤ 1 ug/L	all year	002
Solids, total suspended	daily maximum	≤ 30 mg/L	all year	003
Solids, total suspended	monthly average	≤ 30 mg/L	all year	003
Oil and grease, hexane extr method	daily maximum	≤ 20 mg/L	all year	003
Oil and grease, hexane extr method	monthly average	≤ 15 mg/L	all year	003
Cyanide, total [as CN]	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Sulfide, total [as S]	maximum	report only (mg/L) (alert, not enforceable)	all year	WELL
Chloride [as Cl]	maximum	report only (mg/L) (alert, not enforceable)	all year	WELL
Arsenic, total [as As]	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Beryllium, total [as Be]	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Cadmium, total [as Cd]	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Chromium, total [as Cr]	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Copper, total [as Cu]	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Lead, total [as Pb]	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Thallium, total [as Tl]	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Nickel, total [as Ni]	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Silver, total [as Ag]	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Zinc, total [as Zn]	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Antimony, total [as Sb]	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Selenium, total [as Se]	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Chromium, hexavalent dissolved [as Cr]	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Dichlorobromomethane	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Carbon tetrachloride	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
1,2-Dichloroethane	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Bromoform	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Dibromochloromethane	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Chloroform	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Toluene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Benzene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Phenolics, total	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Acenaphthylene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Acenaphthene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Acrolein	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Acrylonitrile	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Anthracene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Benzo[b]fluoranthene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Benzo[k]fluoranthene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Benzo[a]pyrene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Bis[2-chloroethyl] ether	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Bis[2-chloroethoxy]methane	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Bis[2-chloroisopropyl] ether	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Butyl benzyl phthalate	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Chlorobenzene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Chrysene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Diethyl phthalate	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Dimethyl phthalate	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
1,2-Diphenylhydrazine	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Ethylbenzene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Fluoranthene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Fluorene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Hexachlorocyclopentadiene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Hexachloroethane	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Indeno[1,2,3-cd]pyrene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Isophorone	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Methyl bromide [Bromomethane]	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Methyl chloride [Chloromethane]	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Methylene chloride	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
N-Nitrosodi-N-propylamine	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
N-Nitrosodiphenylamine	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
N-Nitrosodimethylamine [NDMA]	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Nitrobenzene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Phenanthrene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Pyrene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Tetrachloroethylene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
1,1-Dichloroethane	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
1,1-Dichloroethylene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
1,1,1-Trichloroethane	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
1,1,2-Trichloroethane	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
1,1,2,2-Tetrachloroethane	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Benzo[ghi]perylene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Benzo[a]anthracene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
1,2-Dichlorobenzene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
1,2-Dichloropropane	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
trans-1,2-Dichloroethylene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
1,2,4-Trichlorobenzene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Dibenz[a,h]anthracene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
1,3-Dichlorobenzene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
1,4-Dichlorobenzene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
2-Chloroethyl vinyl ether, [mixed]	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
2-Chloronaphthalene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
2-Chlorophenol	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
2-Nitrophenol	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Di-n-octyl phthalate	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
2,4-Dichlorophenol	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
2,4-Dimethylphenol	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
2,4-Dinitrotoluene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
2,4-Dinitrophenol	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
2,4,6-Trichlorophenol	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
2,6-Dinitrotoluene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
3,3'-Dichlorobenzidine	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
4-Bromophenyl phenyl ether	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
4-Chlorophenyl phenyl ether	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
4-Nitrophenol	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
4,6-Dinitro-o-cresol	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
2,3,7,8-Tetrachlorodibenzo-p-dioxin	single reading	report only (pg/L) (alert, not enforceable)	all year	WELL
Naphthalene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Pentachlorophenol	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Di[2-ethylhexyl] phthalate [DEHP]	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Di-n-butyl phthalate	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Benzidine	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Vinyl chloride	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Hexachlorobenzene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Hexachlorobutadiene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Phenols	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Dibenz[a,h]acridine	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Dibenzo[a,e]pyrene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Dibenzo[a,h]pyrene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
3-Methylcholanthrene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
4-Chloro-3-methylphenol	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Mercury, total [as Hg]	single reading	report only (ng/L) (alert, not enforceable)	all year	WELL
Dibenz[a,j]acridine	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Benzo[rst]pentaphene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
1,3-Dichloropropene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Perylene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Benzo[j]fluoranthene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Trichloroethene	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL
Chloroethane	single reading	report only (ug/L) (alert, not enforceable)	all year	WELL

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/WA0040932 · MCP: https://passage-data.com/mcp