COMPASS MINERALS CORPORATION

NPDES permit UT0000647 · Minor NON-POTW · effective, expires 2026-10-04 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

4values over a limit
0required values missing, on 0 form(s)
29of 114 forms filed late

Last period with anything received: 2026-07-31. Most often over: BOD, 5-day (2), Solids, total suspended (2).

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (81)

OutfallParameterStatisticLimitMonths
001Flow rate30DA AVG report only all year
001Flow rate30DA AVG report only all year
001Flow rateDAILY MX report only all year
001Flow rateDAILY MX report only all year
001Oxygen, dissolved [DO]DAILY MN >= 4.5 mg/L all year
001BOD, 5-dayMX MO AV <= 25 mg/L all year
001BOD, 5-dayMX 7D AV <= 35 mg/L all year
001pHMINIMUM >= 6.5 SU all year
001pHDAILY MN >= 6.5 SU all year
001pHMAXIMUM <= 9 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedMX MO AV <= 25 mg/L all year
001Solids, total suspendedDAILY MX <= 35 mg/L all year
001Oil & GreaseDAILY MX <= 10 mg/L all year
001Cyanide, total [as CN]MX MO AV report only all year
001Arsenic, total [as As]MX MO AV report only all year
001Cadmium, total [as Cd]MX MO AV report only all year
001Chromium, total [as Cr]MX MO AV <= .2 mg/L all year
001Chromium, total [as Cr]MX MO AV report only all year
001Chromium, total [as Cr]DAILY MX <= .2 mg/L all year
001Copper, total [as Cu]MX MO AV report only all year
001Lead, total [as Pb]MX MO AV report only all year
001Nickel, total [as Ni]MX MO AV report only all year
001Silver, total [as Ag]MX MO AV report only all year
001Zinc, total [as Zn]MX MO AV <= 1 mg/L all year
001Zinc, total [as Zn]MX MO AV report only all year
001Zinc, total [as Zn]DAILY MX <= 1 mg/L all year
001Oil and greaseDAILY MX <= 10 mg/L all year
001Chlorine, total residualMX MO AV <= .2 mg/L all year
001Chlorine, total residualDAILY MX <= .5 mg/L all year
001Mercury, total [as Hg]MX MO AV report only all year
001Oil and grease visualDAILY MX report only all year
001Oil and grease visualMO AVG report only all year
002Flow rate30DA AVG report only all year
002Flow rateDAILY MX report only all year
002pHMINIMUM >= 6.5 SU all year
002pHMAXIMUM <= 9 SU all year
002Oil & GreaseDAILY MX <= 10 mg/L all year
002Oil and grease visualDAILY MX report only all year
003Flow rate30DA AVG report only all year
003Flow rateDAILY MX report only all year
003pHMINIMUM >= 6.5 SU all year
003pHMAXIMUM <= 9 SU all year
003Oil & GreaseDAILY MX <= 10 mg/L all year
003Oil and grease visualDAILY MX report only all year
004Flow rate30DA AVG report only all year
004Flow rateDAILY MX report only all year
004pHMINIMUM >= 6.5 SU all year
004pHMAXIMUM <= 9 SU all year
004Oil & GreaseDAILY MX <= 10 mg/L all year
004Oil and grease visualDAILY MX report only all year
005Flow rate30DA AVG report only all year
005Flow rateDAILY MX report only all year
005pHMINIMUM >= 6.5 SU all year
005pHMAXIMUM <= 9 SU all year
005Oil & GreaseDAILY MX <= 10 mg/L all year
005Oil and grease visualDAILY MX report only all year
006Flow rate30DA AVG report only all year
006Flow rateDAILY MX report only all year
006pHMINIMUM >= 6.5 SU all year
006pHMAXIMUM <= 9 SU all year
006Oil & GreaseDAILY MX <= 10 mg/L all year
006Oil and grease visualDAILY MX report only all year
007Flow rate30DA AVG report only all year
007Flow rateDAILY MX report only all year
007pHMINIMUM >= 6.5 SU all year
007pHMAXIMUM <= 9 SU all year
007Oil & GreaseDAILY MX <= 10 mg/L all year
007Oil and grease visualDAILY MX report only all year
008Flow rate30DA AVG report only all year
008Flow rateDAILY MX report only all year
008pHMINIMUM >= 6.5 SU all year
008pHMAXIMUM <= 9 SU all year
008Oil & GreaseDAILY MX <= 10 mg/L all year
008Oil and grease visualDAILY MX report only all year
009Flow rate30DA AVG report only all year
009Flow rateDAILY MX report only all year
009pHMINIMUM >= 6.5 SU all year
009pHMAXIMUM <= 9 SU all year
009Oil & GreaseDAILY MX <= 10 mg/L all year
009Oil and grease visualDAILY 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