Denver City and County — NPDES permit COS000001: limits, due date and EPA's record

NPDES permit COS000001 · Major NON-POTW · administratively continued, expires 2026-03-31 · EPA's file as of 2026-09-19

This permit expired on 2026-03-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among CO permits in EPA's filings — check your permit).

Limits in force (260)

Outfall	Parameter	Statistic	Limit	Months
001	Temperature, water deg. centigrade	DAILY MX	report only	Dec
001	Temperature, water deg. centigrade	DAILY MX	report only	Dec
001	Conductivity	DAILY MX	report only	Dec
001	Conductivity	DAILY MX	report only	Dec
001	pH	DAILY MX	report only	Dec
001	pH	DAILY MX	report only	Dec
001	Solids, total suspended	DAILY MX	report only	Dec
001	Solids, total suspended	DAILY MX	report only	Dec
001	Nitrogen, inorganic total	DAILY MX	report only	Dec
001	Nitrogen, inorganic total	DAILY MX	report only	Dec
001	Phosphorus, total [as P]	DAILY MX	report only	Dec
001	Phosphorus, total [as P]	DAILY MX	report only	Dec
001	Hardness, total [as CaCO3]	DAILY MX	report only	Dec
001	Hardness, total [as CaCO3]	DAILY MX	report only	Dec
001	Chloride [as Cl]	DAILY MX	report only	Dec
001	Chloride [as Cl]	DAILY MX	report only	Dec
001	Iron, total recoverable	DAILY MX	report only	Dec
001	Iron, total recoverable	DAILY MX	report only	Dec
001	Arsenic, total [as As]	DAILY MX	report only	Dec
001	Arsenic, total [as As]	DAILY MX	report only	Dec
001	Manganese, dissolved [as Mn]	DAILY MX	report only	Dec
001	Manganese, dissolved [as Mn]	DAILY MX	report only	Dec
001	Nickel, total recoverable	DAILY MX	report only	Dec
001	Nickel, total recoverable	DAILY MX	report only	Dec
001	Cadmium, total recoverable	DAILY MX	report only	Dec
001	Cadmium, total recoverable	DAILY MX	report only	Dec
001	Lead, total recoverable	DAILY MX	report only	Dec
001	Lead, total recoverable	DAILY MX	report only	Dec
001	Chromium, total recoverable	DAILY MX	report only	Dec
001	Chromium, total recoverable	DAILY MX	report only	Dec
001	Zinc, potentially dissolved	DAILY MX	report only	Dec
001	Zinc, potentially dissolved	DAILY MX	report only	Dec
001	Copper, potentially dissolved	DAILY MX	report only	Dec
001	Copper, potentially dissolved	DAILY MX	report only	Dec
001	Arsenic, potentially dissolved	DAILY MX	report only	Dec
001	Arsenic, potentially dissolved	DAILY MX	report only	Dec
001	Cadmium, potentially dissolvd	DAILY MX	report only	Dec
001	Cadmium, potentially dissolvd	DAILY MX	report only	Dec
001	Iron, potentially dissolvd	DAILY MX	report only	Dec
001	Iron, potentially dissolvd	DAILY MX	report only	Dec
001	Lead, potentially dissolvd	DAILY MX	report only	Dec
001	Lead, potentially dissolvd	DAILY MX	report only	Dec
001	Nickel, potentially dissolvd	DAILY MX	report only	Dec
001	Nickel, potentially dissolvd	DAILY MX	report only	Dec
001	Selenium, potentially dissolvd	DAILY MX	report only	Dec
001	Selenium, potentially dissolvd	DAILY MX	report only	Dec
001	Oil and grease	DAILY MX	report only	Dec
001	Oil and grease	DAILY MX	report only	Dec
001	Flow, in conduit or thru treatment plant	DAILY MX	report only	Dec
001	Flow, in conduit or thru treatment plant	DAILY MX	report only	Dec
001	E. coli	DAILY MX	report only	Dec
001	E. coli	DAILY MX	report only	Dec
002	Temperature, water deg. centigrade	DAILY MX	report only	Dec
002	Temperature, water deg. centigrade	DAILY MX	report only	Dec
002	Conductivity	DAILY MX	report only	Dec
002	Conductivity	DAILY MX	report only	Dec
002	pH	DAILY MX	report only	Dec
002	pH	DAILY MX	report only	Dec
002	Solids, total suspended	DAILY MX	report only	Dec
002	Solids, total suspended	DAILY MX	report only	Dec
002	Nitrogen, inorganic total	DAILY MX	report only	Dec
002	Nitrogen, inorganic total	DAILY MX	report only	Dec
002	Phosphorus, total [as P]	DAILY MX	report only	Dec
002	Phosphorus, total [as P]	DAILY MX	report only	Dec
002	Hardness, total [as CaCO3]	DAILY MX	report only	Dec
002	Hardness, total [as CaCO3]	DAILY MX	report only	Dec
002	Chloride [as Cl]	DAILY MX	report only	Dec
002	Chloride [as Cl]	DAILY MX	report only	Dec
002	Iron, total recoverable	DAILY MX	report only	Dec
002	Iron, total recoverable	DAILY MX	report only	Dec
002	Arsenic, total [as As]	DAILY MX	report only	Dec
002	Arsenic, total [as As]	DAILY MX	report only	Dec
002	Manganese, dissolved [as Mn]	DAILY MX	report only	Dec
002	Manganese, dissolved [as Mn]	DAILY MX	report only	Dec
002	Nickel, total recoverable	DAILY MX	report only	Dec
002	Nickel, total recoverable	DAILY MX	report only	Dec
002	Cadmium, total recoverable	DAILY MX	report only	Dec
002	Cadmium, total recoverable	DAILY MX	report only	Dec
002	Lead, total recoverable	DAILY MX	report only	Dec
002	Lead, total recoverable	DAILY MX	report only	Dec
002	Chromium, total recoverable	DAILY MX	report only	Dec
002	Chromium, total recoverable	DAILY MX	report only	Dec
002	Zinc, potentially dissolved	DAILY MX	report only	Dec
002	Zinc, potentially dissolved	DAILY MX	report only	Dec
002	Copper, potentially dissolved	DAILY MX	report only	Dec
002	Copper, potentially dissolved	DAILY MX	report only	Dec
002	Arsenic, potentially dissolved	DAILY MX	report only	Dec
002	Arsenic, potentially dissolved	DAILY MX	report only	Dec
002	Cadmium, potentially dissolvd	DAILY MX	report only	Dec
002	Cadmium, potentially dissolvd	DAILY MX	report only	Dec
002	Iron, potentially dissolvd	DAILY MX	report only	Dec
002	Iron, potentially dissolvd	DAILY MX	report only	Dec
002	Lead, potentially dissolvd	DAILY MX	report only	Dec
002	Lead, potentially dissolvd	DAILY MX	report only	Dec
002	Nickel, potentially dissolvd	DAILY MX	report only	Dec
002	Nickel, potentially dissolvd	DAILY MX	report only	Dec
002	Selenium, potentially dissolvd	DAILY MX	report only	Dec
002	Selenium, potentially dissolvd	DAILY MX	report only	Dec
002	Oil and grease	DAILY MX	report only	Dec
002	Oil and grease	DAILY MX	report only	Dec
002	Flow, in conduit or thru treatment plant	DAILY MX	report only	Dec
002	Flow, in conduit or thru treatment plant	DAILY MX	report only	Dec
002	E. coli	DAILY MX	report only	Dec
002	E. coli	DAILY MX	report only	Dec
003	Temperature, water deg. centigrade	DAILY MX	report only	Dec
003	Temperature, water deg. centigrade	DAILY MX	report only	Dec
003	Conductivity	DAILY MX	report only	Dec
003	Conductivity	DAILY MX	report only	Dec
003	pH	DAILY MX	report only	Dec
003	pH	DAILY MX	report only	Dec
003	Solids, total suspended	DAILY MX	report only	Dec
003	Solids, total suspended	DAILY MX	report only	Dec
003	Nitrogen, inorganic total	DAILY MX	report only	Dec
003	Nitrogen, inorganic total	DAILY MX	report only	Dec
003	Phosphorus, total [as P]	DAILY MX	report only	Dec
003	Phosphorus, total [as P]	DAILY MX	report only	Dec
003	Hardness, total [as CaCO3]	DAILY MX	report only	Dec
003	Hardness, total [as CaCO3]	DAILY MX	report only	Dec
003	Chloride [as Cl]	DAILY MX	report only	Dec
003	Chloride [as Cl]	DAILY MX	report only	Dec
003	Iron, total recoverable	DAILY MX	report only	Dec
003	Iron, total recoverable	DAILY MX	report only	Dec
003	Arsenic, total [as As]	DAILY MX	report only	Dec
003	Arsenic, total [as As]	DAILY MX	report only	Dec
003	Manganese, dissolved [as Mn]	DAILY MX	report only	Dec
003	Manganese, dissolved [as Mn]	DAILY MX	report only	Dec
003	Nickel, total recoverable	DAILY MX	report only	Dec
003	Nickel, total recoverable	DAILY MX	report only	Dec
003	Cadmium, total recoverable	DAILY MX	report only	Dec
003	Cadmium, total recoverable	DAILY MX	report only	Dec
003	Lead, total recoverable	DAILY MX	report only	Dec
003	Lead, total recoverable	DAILY MX	report only	Dec
003	Chromium, total recoverable	DAILY MX	report only	Dec
003	Chromium, total recoverable	DAILY MX	report only	Dec
003	Zinc, potentially dissolved	DAILY MX	report only	Dec
003	Zinc, potentially dissolved	DAILY MX	report only	Dec
003	Copper, potentially dissolved	DAILY MX	report only	Dec
003	Copper, potentially dissolved	DAILY MX	report only	Dec
003	Arsenic, potentially dissolved	DAILY MX	report only	Dec
003	Arsenic, potentially dissolved	DAILY MX	report only	Dec
003	Cadmium, potentially dissolvd	DAILY MX	report only	Dec
003	Cadmium, potentially dissolvd	DAILY MX	report only	Dec
003	Iron, potentially dissolvd	DAILY MX	report only	Dec
003	Iron, potentially dissolvd	DAILY MX	report only	Dec
003	Lead, potentially dissolvd	DAILY MX	report only	Dec
003	Lead, potentially dissolvd	DAILY MX	report only	Dec
003	Nickel, potentially dissolvd	DAILY MX	report only	Dec
003	Nickel, potentially dissolvd	DAILY MX	report only	Dec
003	Selenium, potentially dissolvd	DAILY MX	report only	Dec
003	Selenium, potentially dissolvd	DAILY MX	report only	Dec
003	Oil and grease	DAILY MX	report only	Dec
003	Oil and grease	DAILY MX	report only	Dec
003	Flow, in conduit or thru treatment plant	DAILY MX	report only	Dec
003	Flow, in conduit or thru treatment plant	DAILY MX	report only	Dec
003	E. coli	DAILY MX	report only	Dec
003	E. coli	DAILY MX	report only	Dec
004	Temperature, water deg. centigrade	DAILY MX	report only	Dec
004	Temperature, water deg. centigrade	DAILY MX	report only	Dec
004	Conductivity	DAILY MX	report only	Dec
004	Conductivity	DAILY MX	report only	Dec
004	pH	DAILY MX	report only	Dec
004	pH	DAILY MX	report only	Dec
004	Solids, total suspended	DAILY MX	report only	Dec
004	Solids, total suspended	DAILY MX	report only	Dec
004	Nitrogen, inorganic total	DAILY MX	report only	Dec
004	Nitrogen, inorganic total	DAILY MX	report only	Dec
004	Phosphorus, total [as P]	DAILY MX	report only	Dec
004	Phosphorus, total [as P]	DAILY MX	report only	Dec
004	Hardness, total [as CaCO3]	DAILY MX	report only	Dec
004	Hardness, total [as CaCO3]	DAILY MX	report only	Dec
004	Chloride [as Cl]	DAILY MX	report only	Dec
004	Chloride [as Cl]	DAILY MX	report only	Dec
004	Iron, total recoverable	DAILY MX	report only	Dec
004	Iron, total recoverable	DAILY MX	report only	Dec
004	Arsenic, total [as As]	DAILY MX	report only	Dec
004	Arsenic, total [as As]	DAILY MX	report only	Dec
004	Manganese, dissolved [as Mn]	DAILY MX	report only	Dec
004	Manganese, dissolved [as Mn]	DAILY MX	report only	Dec
004	Nickel, total recoverable	DAILY MX	report only	Dec
004	Nickel, total recoverable	DAILY MX	report only	Dec
004	Cadmium, total recoverable	DAILY MX	report only	Dec
004	Cadmium, total recoverable	DAILY MX	report only	Dec
004	Lead, total recoverable	DAILY MX	report only	Dec
004	Lead, total recoverable	DAILY MX	report only	Dec
004	Chromium, total recoverable	DAILY MX	report only	Dec
004	Chromium, total recoverable	DAILY MX	report only	Dec
004	Zinc, potentially dissolved	DAILY MX	report only	Dec
004	Zinc, potentially dissolved	DAILY MX	report only	Dec
004	Copper, potentially dissolved	DAILY MX	report only	Dec
004	Copper, potentially dissolved	DAILY MX	report only	Dec
004	Arsenic, potentially dissolved	DAILY MX	report only	Dec
004	Arsenic, potentially dissolved	DAILY MX	report only	Dec
004	Cadmium, potentially dissolvd	DAILY MX	report only	Dec
004	Cadmium, potentially dissolvd	DAILY MX	report only	Dec
004	Iron, potentially dissolvd	DAILY MX	report only	Dec
004	Iron, potentially dissolvd	DAILY MX	report only	Dec
004	Lead, potentially dissolvd	DAILY MX	report only	Dec
004	Lead, potentially dissolvd	DAILY MX	report only	Dec
004	Nickel, potentially dissolvd	DAILY MX	report only	Dec
004	Nickel, potentially dissolvd	DAILY MX	report only	Dec
004	Selenium, potentially dissolvd	DAILY MX	report only	Dec
004	Selenium, potentially dissolvd	DAILY MX	report only	Dec
004	Oil and grease	DAILY MX	report only	Dec
004	Oil and grease	DAILY MX	report only	Dec
004	Flow, in conduit or thru treatment plant	DAILY MX	report only	Dec
004	Flow, in conduit or thru treatment plant	DAILY MX	report only	Dec
004	E. coli	DAILY MX	report only	Dec
004	E. coli	DAILY MX	report only	Dec
005	Temperature, water deg. centigrade	DAILY MX	report only	Dec
005	Temperature, water deg. centigrade	DAILY MX	report only	Dec
005	Conductivity	DAILY MX	report only	Dec
005	Conductivity	DAILY MX	report only	Dec
005	pH	DAILY MX	report only	Dec
005	pH	DAILY MX	report only	Dec
005	Solids, total suspended	DAILY MX	report only	Dec
005	Solids, total suspended	DAILY MX	report only	Dec
005	Nitrogen, inorganic total	DAILY MX	report only	Dec
005	Nitrogen, inorganic total	DAILY MX	report only	Dec
005	Phosphorus, total [as P]	DAILY MX	report only	Dec
005	Phosphorus, total [as P]	DAILY MX	report only	Dec
005	Hardness, total [as CaCO3]	DAILY MX	report only	Dec
005	Hardness, total [as CaCO3]	DAILY MX	report only	Dec
005	Chloride [as Cl]	DAILY MX	report only	Dec
005	Chloride [as Cl]	DAILY MX	report only	Dec
005	Iron, total recoverable	DAILY MX	report only	Dec
005	Iron, total recoverable	DAILY MX	report only	Dec
005	Arsenic, total [as As]	DAILY MX	report only	Dec
005	Arsenic, total [as As]	DAILY MX	report only	Dec
005	Manganese, dissolved [as Mn]	DAILY MX	report only	Dec
005	Manganese, dissolved [as Mn]	DAILY MX	report only	Dec
005	Nickel, total recoverable	DAILY MX	report only	Dec
005	Nickel, total recoverable	DAILY MX	report only	Dec
005	Cadmium, total recoverable	DAILY MX	report only	Dec
005	Cadmium, total recoverable	DAILY MX	report only	Dec
005	Lead, total recoverable	DAILY MX	report only	Dec
005	Lead, total recoverable	DAILY MX	report only	Dec
005	Chromium, total recoverable	DAILY MX	report only	Dec
005	Chromium, total recoverable	DAILY MX	report only	Dec
005	Zinc, potentially dissolved	DAILY MX	report only	Dec
005	Zinc, potentially dissolved	DAILY MX	report only	Dec
005	Copper, potentially dissolved	DAILY MX	report only	Dec
005	Copper, potentially dissolved	DAILY MX	report only	Dec
005	Arsenic, potentially dissolved	DAILY MX	report only	Dec
005	Arsenic, potentially dissolved	DAILY MX	report only	Dec
005	Cadmium, potentially dissolvd	DAILY MX	report only	Dec
005	Cadmium, potentially dissolvd	DAILY MX	report only	Dec
005	Iron, potentially dissolvd	DAILY MX	report only	Dec
005	Iron, potentially dissolvd	DAILY MX	report only	Dec
005	Lead, potentially dissolvd	DAILY MX	report only	Dec
005	Lead, potentially dissolvd	DAILY MX	report only	Dec
005	Nickel, potentially dissolvd	DAILY MX	report only	Dec
005	Nickel, potentially dissolvd	DAILY MX	report only	Dec
005	Selenium, potentially dissolvd	DAILY MX	report only	Dec
005	Selenium, potentially dissolvd	DAILY MX	report only	Dec
005	Oil and grease	DAILY MX	report only	Dec
005	Oil and grease	DAILY MX	report only	Dec
005	Flow, in conduit or thru treatment plant	DAILY MX	report only	Dec
005	Flow, in conduit or thru treatment plant	DAILY MX	report only	Dec
005	E. coli	DAILY MX	report only	Dec
005	E. coli	DAILY MX	report only	Dec