Metro Water Recovery — NPDES permit CO0048959: limits, due date and EPA's record

Sewage treatment plant, major discharger, Brighton, Colorado. NPDES permit CO0048959 expired Apr 30, 2021; its limits still apply. Last 12 months: no values over a limit, 4 of 56 reports late. Source: EPA ECHO, Oct 22, 2026.

Limits in force (170)

Parameter	Statistic	Limit	Months	Outfall
pH	minimum	≥ 6 SU	all year	001
pH	maximum	≤ 9 SU	all year	001
Solids, total suspended	30-day average	≤ 30 mg/L	all year	001
Solids, total suspended	maximum 7-day average	≤ 45 mg/L	all year	001
Nitrogen, ammonia total [as N]	30-day average	≤ 15 mg/L	Jan	001
Nitrogen, ammonia total [as N]	30-day average	≤ 15 mg/L	Feb	001
Nitrogen, ammonia total [as N]	30-day average	≤ 14 mg/L	Mar	001
Nitrogen, ammonia total [as N]	30-day average	≤ 13 mg/L	May	001
Nitrogen, ammonia total [as N]	30-day average	≤ 13 mg/L	Jun	001
Nitrogen, ammonia total [as N]	30-day average	≤ 10 mg/L	Jul	001
Nitrogen, ammonia total [as N]	30-day average	≤ 9.7 mg/L	Aug	001
Nitrogen, ammonia total [as N]	30-day average	≤ 10 mg/L	Sep	001
Nitrogen, ammonia total [as N]	30-day average	≤ 10 mg/L	Oct	001
Nitrogen, ammonia total [as N]	30-day average	≤ 14 mg/L	Nov	001
Nitrogen, ammonia total [as N]	30-day average	≤ 15 mg/L	Dec	001
Nitrogen, ammonia total [as N]	30-day average	≤ 14 mg/L	Apr	001
Nitrogen, ammonia total [as N]	30-day average	report only (mg/L)	Jan	001
Nitrogen, ammonia total [as N]	30-day average	≤ 11.45 mg/L	Feb	001
Nitrogen, ammonia total [as N]	30-day average	≤ 9.97 mg/L	Mar	001
Nitrogen, ammonia total [as N]	30-day average	≤ 11.09 mg/L	Apr	001
Nitrogen, ammonia total [as N]	30-day average	≤ 9.61 mg/L	May	001
Nitrogen, ammonia total [as N]	30-day average	report only (mg/L)	Jun	001
Nitrogen, ammonia total [as N]	30-day average	report only (mg/L)	Jul	001
Nitrogen, ammonia total [as N]	30-day average	report only (mg/L)	Aug	001
Nitrogen, ammonia total [as N]	30-day average	report only (mg/L)	Sep	001
Nitrogen, ammonia total [as N]	30-day average	report only (mg/L)	Oct	001
Nitrogen, ammonia total [as N]	30-day average	≤ 14.47 mg/L	Nov	001
Nitrogen, ammonia total [as N]	30-day average	report only (mg/L)	Dec	001
Nitrogen, ammonia total [as N]	daily maximum	report only (mg/L)	Jan	001
Nitrogen, ammonia total [as N]	daily maximum	report only (mg/L)	Feb	001
Nitrogen, ammonia total [as N]	daily maximum	report only (mg/L)	Mar	001
Nitrogen, ammonia total [as N]	daily maximum	report only (mg/L)	May	001
Nitrogen, ammonia total [as N]	daily maximum	report only (mg/L)	Jun	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 21.5 mg/L	Jul	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 23.4 mg/L	Aug	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 26.7 mg/L	Sep	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 24.3 mg/L	Oct	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 24.1 mg/L	Nov	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 27.8 mg/L	Dec	001
Nitrogen, ammonia total [as N]	daily maximum	report only (mg/L)	Apr	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 8.09 mg/L	Jan	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 14.11 mg/L	Feb	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 15.33 mg/L	Mar	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 14.32 mg/L	Apr	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 13.37 mg/L	May	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 7.33 mg/L	Jun	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 7.67 mg/L	Jul	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 7.86 mg/L	Aug	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 7.53 mg/L	Sep	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 7.12 mg/L	Oct	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 15.53 mg/L	Nov	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 9.24 mg/L	Dec	001
Nitrite + Nitrate total [as N]	daily maximum	≤ 18.25 mg/L	all year	001
Nitrite + Nitrate total [as N]	daily maximum	≤ 10 mg/L	all year	001
Nitrogen, inorganic total	daily maximum	≤ 30 mg/L	all year	001
Nitrogen, inorganic total	daily maximum	≤ 18.06 mg/L	Jan	001
Nitrogen, inorganic total	daily maximum	≤ 23.62 mg/L	Feb	001
Nitrogen, inorganic total	daily maximum	≤ 24.91 mg/L	Mar	001
Nitrogen, inorganic total	daily maximum	≤ 24.32 mg/L	Apr	001
Nitrogen, inorganic total	daily maximum	≤ 23.37 mg/L	May	001
Nitrogen, inorganic total	daily maximum	≤ 17.07 mg/L	Jun	001
Nitrogen, inorganic total	daily maximum	≤ 17.3 mg/L	Jul	001
Nitrogen, inorganic total	daily maximum	≤ 17.86 mg/L	Aug	001
Nitrogen, inorganic total	daily maximum	≤ 17.53 mg/L	Sep	001
Nitrogen, inorganic total	daily maximum	≤ 17.12 mg/L	Oct	001
Nitrogen, inorganic total	daily maximum	≤ 25.3 mg/L	Nov	001
Nitrogen, inorganic total	daily maximum	≤ 19.05 mg/L	Dec	001
Nitrogen, inorganic total	aggregate rolling median	≤ 15 mg/L	all year	001
Nitrogen, inorganic total	95th percentile	≤ 20 mg/L	all year	001
Phosphorus, total [as P]	aggregate rolling median	≤ 1 mg/L	all year	001
Phosphorus, total [as P]	95th percentile	≤ 2.5 mg/L	all year	001
Cyanide, total [as CN]	daily maximum	report only (ug/L)	all year	001
Chloride [as Cl]	30-day average	report only (mg/L)	all year	001
Arsenic, total recoverable	30-day average	report only (ug/L)	all year	001
Iron, total recoverable	30-day average	report only (ug/L)	all year	001
Arsenic, total [as As]	daily maximum	report only (ug/L)	all year	001
Cadmium, total [as Cd]	daily maximum	report only (ug/L)	all year	001
Chromium, total [as Cr]	daily maximum	report only (ug/L)	all year	001
Copper, total [as Cu]	daily maximum	report only (ug/L)	all year	001
Lead, total [as Pb]	daily maximum	report only (ug/L)	all year	001
Manganese, dissolved [as Mn]	30-day average	report only (ug/L)	all year	001
Molybdenum, total [as Mo]	daily maximum	report only (ug/L)	all year	001
Nickel, total [as Ni]	daily maximum	report only (ug/L)	all year	001
Silver, total [as Ag]	daily maximum	report only (ug/L)	all year	001
Zinc, total [as Zn]	daily maximum	report only (ug/L)	all year	001
Selenium, total [as Se]	daily maximum	report only (ug/L)	all year	001
Chromium, hexavalent dissolved [as Cr]	30-day average	report only (ug/L)	all year	001
Chromium, hexavalent dissolved [as Cr]	daily maximum	report only (ug/L)	all year	001
Zinc, potentially dissolved	30-day average	report only (ug/L)	all year	001
Zinc, potentially dissolved	daily maximum	report only (ug/L)	all year	001
Silver, potentially dissolved	30-day average	report only (ug/L)	all year	001
Silver, potentially dissolved	daily maximum	report only (ug/L)	all year	001
Copper, potentially dissolved	30-day average	report only (ug/L)	all year	001
Copper, potentially dissolved	daily maximum	report only (ug/L)	all year	001
Arsenic, potentially dissolved	daily maximum	report only (ug/L)	all year	001
Cadmium, potentially dissolvd	30-day average	report only (ug/L)	all year	001
Cadmium, potentially dissolvd	daily maximum	report only (ug/L)	all year	001
Lead, potentially dissolvd	30-day average	report only (ug/L)	all year	001
Lead, potentially dissolvd	daily maximum	report only (ug/L)	all year	001
Manganese, potentially dissolvd	daily maximum	report only (ug/L)	all year	001
Nickel, potentially dissolvd	30-day average	report only (ug/L)	all year	001
Nickel, potentially dissolvd	daily maximum	report only (ug/L)	all year	001
Selenium, potentially dissolvd	30-day average	report only (ug/L)	all year	001
Selenium, potentially dissolvd	daily maximum	report only (ug/L)	all year	001
Oil and grease	instantaneous maximum	≤ 10 mg/L	all year	001
Total phenols	daily maximum	report only (ug/L)	all year	001
Total phenols	daily maximum	report only (ug/L)	all year	001
Chromium, trivalent total recoverable	30-day average	report only (ug/L)	all year	001
Chromium, trivalent total recoverable	daily maximum	report only (ug/L)	all year	001
Flow, in conduit or thru treatment plant	30-day average	≤ 28.8 MGD	all year	001
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	001
Chlorine, total residual	30-day average	≤ .054 mg/L	all year	001
Chlorine, total residual	instantaneous maximum	≤ .064 mg/L	all year	001
E. coli	30-day geometric mean	≤ 126 #/100mL	all year	001
E. coli	maximum 7-day geometric mean	≤ 252 #/100mL	all year	001
Cyanide, free available	daily maximum	report only (ug/L)	all year	001
Nonylphenol	30-day average	report only (ug/L)	all year	001
Nonylphenol	daily maximum	report only (ug/L)	all year	001
Mercury, total [as Hg]	30-day average	≤ .045 ug/L	all year	001
Mercury, total [as Hg]	daily maximum	report only (ug/L)	all year	001
BOD, carbonaceous [5 day, 20 C]	30-day average	≤ 17 mg/L	all year	001
BOD, carbonaceous [5 day, 20 C]	maximum 7-day average	≤ 25 mg/L	all year	001
BOD, carb-5 day, 20 deg C, percent removal	monthly average minimum	≥ 85 %	all year	001
BOD, carb-5 day, 20 deg C, percent removal	monthly average minimum	≥ 85 %	all year	001
Solids, suspended percent removal	monthly average minimum	≥ 85 %	all year	001
Solids, suspended percent removal	monthly average minimum	≥ 85 %	all year	001
Sulfate	30-day average	report only (mg/L)	all year	001
Oil and grease visual	instantaneous maximum	report only (abst=0;prst=1)	all year	001
Static Renewal 7 Day Chronic Ceriodaphnia dubia	single sample	report only (tox chronic)	all year	001
Static Renewal 7 Day Chronic Ceriodaphnia dubia	minimum value	report only (tox chronic)	all year	001
Static Renewal 7 Day Chronic Ceriodaphnia dubia	minimum value	≥ 20 tox chronic	all year	001
Static Renewal 7 Day Chronic Pimephales promelas	single sample	report only (tox chronic)	all year	001
Static Renewal 7 Day Chronic Pimephales promelas	minimum value	report only (tox chronic)	all year	001
Static Renewal 7 Day Chronic Pimephales promelas	minimum value	≥ 20 tox chronic	all year	001
Temperature, water deg. centigrade	maximum weekly average	report only (deg C)	all year	002
Temperature, water deg. centigrade	daily maximum	report only (deg C)	all year	002
Oxygen, dissolved [DO]	minimum	report only (mg/L)	all year	002
Oxygen, dissolved [DO]	daily minimum	≥ 3 mg/L	all year	002
Oxygen, dissolved [DO]	7-day average	report only (mg/L)	all year	002
Oxygen, dissolved [DO]	minimum 7-day average	≥ 5 mg/L	all year	002
Oxygen, dissolved [DO]	maximum	report only (mg/L)	all year	002
Oil and grease	instantaneous maximum	≤ 10 mg/L	all year	002
Oil and grease visual	instantaneous maximum	report only (abst=0;prst=1)	all year	002
Plant capacity fact. percent of capacity	30-day average	report only (%)	all year	300
Plant capacity fact. percent of capacity	30-day average	report only (%)	all year	300
BOD, 5-day, 20 deg. C	30-day average	report only (mg/L)	all year	300
BOD, 5-day, 20 deg. C	maximum 7-day average	report only (mg/L)	all year	300
BOD, 5-day, 20 deg. C	30-day average	report only (lb/d)	all year	300
BOD, 5-day, 20 deg. C	maximum 7-day average	report only (lb/d)	all year	300
Solids, total suspended	30-day average	report only (mg/L)	all year	300
Solids, total suspended	maximum 7-day average	report only (mg/L)	all year	300
Cyanide, total [as CN]	daily maximum	report only (ug/L)	all year	300
Arsenic, total [as As]	daily maximum	report only (ug/L)	all year	300
Cadmium, total [as Cd]	daily maximum	report only (ug/L)	all year	300
Chromium, total [as Cr]	daily maximum	report only (ug/L)	all year	300
Copper, total [as Cu]	daily maximum	report only (ug/L)	all year	300
Lead, total [as Pb]	daily maximum	report only (ug/L)	all year	300
Molybdenum, total [as Mo]	daily maximum	report only (ug/L)	all year	300
Nickel, total [as Ni]	daily maximum	report only (ug/L)	all year	300
Silver, total [as Ag]	daily maximum	report only (ug/L)	all year	300
Zinc, total [as Zn]	daily maximum	report only (ug/L)	all year	300
Selenium, total [as Se]	daily maximum	report only (ug/L)	all year	300
Total phenols	daily maximum	report only (ug/L)	all year	300
Flow, in conduit or thru treatment plant	30-day average	report only (MGD)	all year	300
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	300
Mercury, total [as Hg]	daily maximum	report only (ug/L)	all year	300
BOD, carbonaceous [5 day, 20 C]	30-day average	report only (mg/L)	all year	300
BOD, carbonaceous [5 day, 20 C]	maximum 7-day average	report only (mg/L)	all year	300
Temperature, water deg. centigrade	maximum weekly average	report only (deg C)	all year	UST1
Temperature, water deg. centigrade	daily maximum	report only (deg C)	all year	UST1

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/CO0048959 · MCP: https://passage-data.com/mcp