Brighton City of

NPDES permit CO0046728 · Minor NON-POTW · administratively continued, expires 2021-04-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2021-04-30 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

3values over a limit
0required values missing, on 0 form(s)
0of 19 forms filed late

Last period with anything received: 2026-07-31. Most often over: LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia (3).

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 (48)

OutfallParameterStatisticLimitMonths
001Conductivity30DA AVG report only all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 9 SU all year
001Bicarbonate ion- [as HCO3]30DA AVG report only all year
001Bicarbonate ion- [as HCO3]DAILY MX report only all year
001Solids, total suspended30DA AVG <= 30 mg/L all year
001Solids, total suspendedMX 7D AV <= 45 mg/L all year
001Nitrogen, inorganic totalDAILY MX report only all year
001Nitrogen, inorganic totalRM report only all year
001Nitrogen, inorganic total95th % report only all year
001Phosphorus, total [as P]RM report only all year
001Phosphorus, total [as P]95th % report only all year
001Cyanide, weak acid, dissociableDAILY MX report only all year
001Calcium, total recoverable30DA AVG report only all year
001Calcium, total recoverableDAILY MX report only all year
001Magnesium, total recoverable30DA AVG report only all year
001Magnesium, total recoverableDAILY MX report only all year
001Sodium, total recoverable30DA AVG report only all year
001Sodium, total recoverableDAILY MX report only all year
001Sodium adsorption ratio30DA AVG report only all year
001Sodium adsorption ratioDAILY MX report only all year
001Sodium adsorption ratio30DA AVG report only all year
001Sodium adsorption ratioDAILY MX report only all year
001Chloride [as Cl]30DA AVG report only all year
001Arsenic, total recoverable30DA AVG report only all year
001Molybdenum, total recoverable30DA AVG report only all year
001Selenium, potentially dissolvd30DA AVG report only all year
001Selenium, potentially dissolvdDAILY MX report only all year
001Oil and greaseINST MAX <= 10 mg/L all year
001Flow, in conduit or thru treatment plant30DA AVG <= 1.7 MGD all year
001Flow, in conduit or thru treatment plant30DA AVG <= .99 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residual30DA AVG <= .051 mg/L all year
001Chlorine, total residual30DA AVG <= .058 mg/L all year
001Chlorine, total residualINST MAX <= .062 mg/L all year
001Chlorine, total residualINST MAX <= .072 mg/L all year
001Sulfide-hydrogen sulfide [undissociated]30DA AVG report only all year
001Sulfide-hydrogen sulfide [undissociated]30DA AVG <= .013 mg/L all year
001Sodium Absorption RatioDAILY MX report only all year
001Sodium Absorption Ratio30DA AVG report only all year
001Sodium Absorption Ratio30DA AVG report only all year
001Sodium Absorption RatioDAILY MX report only all year
001Mercury, total [as Hg]30DA AVG report only all year
001Sulfate30DA AVG <= 1700 mg/L all year
001Oil and grease visualINST MAX report only all year
001LC50 Static Renewal 48Hr Acute Ceriodaphnia dubiaMN VALUE >= 100 % all year
001LC50 Static Renewal 96Hr Acute Pimephales promelasMN VALUE >= 100 % all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states