Fremont Sanitation District

NPDES permit CO0039748 · Major POTW · administratively continued, expires 2020-02-29 · 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 2020-02-29 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

0values over a limit
0required values missing, on 0 form(s)
0of 64 forms filed late

Last period with anything received: 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 (77)

OutfallParameterStatisticLimitMonths
001Selenium, potentially dissolvd30DA AVG report only all year
001Selenium, potentially dissolvdDAILY MX report only all year
001Flow, in conduit or thru treatment plant30DA AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
003Solids, total suspended30DA AVG <= 30 mg/L all year
003Solids, total suspendedMX 7D AV <= 45 mg/L all year
003Selenium, potentially dissolvd30DA AVG report only all year
003Selenium, potentially dissolvdDAILY MX report only all year
003Oil and greaseINST MAX <= 10 mg/L all year
003Flow, in conduit or thru treatment plant30DA AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003Oil and grease visualINST MAX report only all year
004BOD, 5-day, 20 deg. C30DA AVG <= 30 mg/L all year
004BOD, 5-day, 20 deg. CMX 7D AV <= 45 mg/L all year
004pHMINIMUM >= 6.5 SU all year
004pHMAXIMUM <= 9 SU all year
004Solids, total suspended30DA AVG <= 30 mg/L all year
004Solids, total suspendedMX 7D AV <= 45 mg/L all year
004Nitrogen, ammonia total [as N]30DA AVG <= 3.3 mg/L Jun
004Nitrogen, ammonia total [as N]30DA AVG <= 3.1 mg/L Aug
004Nitrogen, ammonia total [as N]30DA AVG <= 2.6 mg/L Sep
004Nitrogen, ammonia total [as N]30DA AVG <= 3.4 mg/L Jul
004Nitrogen, ammonia total [as N]30DA AVG <= 8.1 mg/L Jan
004Nitrogen, ammonia total [as N]30DA AVG <= 3.9 mg/L Mar
004Nitrogen, ammonia total [as N]30DA AVG <= 2.9 mg/L Oct
004Nitrogen, ammonia total [as N]30DA AVG <= 6.2 mg/L Feb
004Nitrogen, ammonia total [as N]30DA AVG <= 3.1 mg/L Nov
004Nitrogen, ammonia total [as N]30DA AVG <= 2.7 mg/L May
004Nitrogen, ammonia total [as N]30DA AVG <= 4 mg/L Apr
004Nitrogen, ammonia total [as N]30DA AVG <= 3.3 mg/L Dec
004Nitrogen, ammonia total [as N]DAILY MX <= 36 mg/L Jun
004Nitrogen, ammonia total [as N]DAILY MX <= 35 mg/L Aug
004Nitrogen, ammonia total [as N]DAILY MX <= 32 mg/L Sep
004Nitrogen, ammonia total [as N]DAILY MX <= 33 mg/L Jul
004Nitrogen, ammonia total [as N]DAILY MX <= 29 mg/L Jan
004Nitrogen, ammonia total [as N]DAILY MX <= 33 mg/L Mar
004Nitrogen, ammonia total [as N]DAILY MX <= 33 mg/L Oct
004Nitrogen, ammonia total [as N]DAILY MX <= 34 mg/L Feb
004Nitrogen, ammonia total [as N]DAILY MX <= 37 mg/L Nov
004Nitrogen, ammonia total [as N]DAILY MX <= 25 mg/L May
004Nitrogen, ammonia total [as N]DAILY MX <= 24 mg/L Apr
004Nitrogen, ammonia total [as N]DAILY MX <= 33 mg/L Dec
004Nitrogen, inorganic totalDAILY MX report only all year
004Nitrogen, inorganic totalROLL AVG report only all year
004Phosphorus, total [as P]RM report only all year
004Phosphorus, total [as P]RM <= 3.2 mg/L all year
004Arsenic, total recoverable30DA AVG report only all year
004Silver, potentially dissolved30DA AVG report only all year
004Silver, potentially dissolvedROLL AVG <= 2.9 ug/L all year
004Selenium, potentially dissolvd30DA AVG <= 9.8 ug/L all year
004Selenium, potentially dissolvdDAILY MX report only all year
004Oil and greaseINST MAX <= 10 mg/L all year
004Flow, in conduit or thru treatment plant30DA AVG <= 8.5 MGD all year
004Flow, in conduit or thru treatment plantDAILY MX report only all year
004Chlorine, total residual30DA AVG <= .03 mg/L all year
004Chlorine, total residualINST MAX <= .19 mg/L all year
004E. coli30DA GM <= 624 #/100mL all year
004E. coliMX 7D GM <= 1248 #/100mL all year
004Nitrogen, Total As NRM <= 45 mg/L all year
004Nonylphenol30DA AVG report only all year
004NonylphenolDAILY MX report only all year
004NonylphenolROLL AVG report only all year
004BOD, 5-day, percent removalMINIMUM >= 85 % all year
004Solids, suspended percent removalMINIMUM >= 85 % all year
004Oil and grease visualINST MAX report only all year
004LC50 Static Renewal 48Hr Acute Ceriodaphnia dubiaMN VALUE >= 100 % all year
004LC50 Static Renewal 96Hr Acute Pimephales promelasMN VALUE >= 100 % all year
300Plant capacity fact. percent of capacity30DA AVG report only all year
300Plant capacity fact. percent of capacity30DA AVG report only all year
300BOD, 5-day, 20 deg. C30DA AVG report only all year
300BOD, 5-day, 20 deg. CMX 7D AV report only all year
300BOD, 5-day, 20 deg. C30DA AVG report only all year
300BOD, 5-day, 20 deg. CMX 7D AV report only all year
300Solids, total suspended30DA AVG report only all year
300Solids, total suspendedMX 7D AV report only all year
300Flow, in conduit or thru treatment plant30DA AVG report only all year
300Flow, in conduit or thru treatment plantDAILY MX report only 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