LAS CRUCES, CITY OF

NPDES permit NM0023311 · Major POTW · administratively continued, expires 2026-06-30 · 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 2026-06-30 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

5values over a limit
0required values missing, on 0 form(s)
0of 28 forms filed late

Last period with anything received: 2026-07-31. Most often over: Whole Effluent Toxicity [WET] - C. dubia (5).

Reporting

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

Limits in force (58)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. C30DA AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. C7 DA AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. C30DA AVG <= 3379 lb/d all year
001BOD, 5-day, 20 deg. C7 DA AVG <= 5069 lb/d all year
001pHMINIMUM >= 6.6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspended30DA AVG <= 30 mg/L all year
001Solids, total suspended7 DA AVG <= 45 mg/L all year
001Solids, total suspended30DA AVG <= 3379 lb/d all year
001Solids, total suspended7 DA AVG <= 5069 lb/d all year
001AcroleinDAILY MX report only all year
001AcrylonitrileDAILY MX report only all year
001Benzo[k]fluorantheneDAILY MX report only all year
001Benzo[a]pyreneDAILY MX report only all year
001ChryseneDAILY MX report only all year
0011,2-DiphenylhydrazineDAILY MX report only all year
001Indeno[1,2,3-cd]pyreneDAILY MX report only all year
001Benzo[a]anthraceneDAILY MX report only all year
001Dibenzo[a,h]anthracene, dry weightDAILY MX report only all year
001BenzidineDAILY MX report only all year
001EndrinDAILY MX report only all year
001HeptachlorDAILY MX report only all year
001Polychlorinated biphenyls [PCBs]30DA AVG <= .00064 ug/L all year
001Polychlorinated biphenyls [PCBs]30DA AVG <= .00064 ug/L all year
001Polychlorinated biphenyls [PCBs]DAILY MX <= .0006711 ug/L all year
001Polychlorinated biphenyls [PCBs]DAILY MX <= .0006711 ug/L all year
001Polychlorinated biphenyls [PCBs]30DA AVG report only all year
001Polychlorinated biphenyls [PCBs]30DA AVG <= .00007205 lb/d all year
001Polychlorinated biphenyls [PCBs]DAILY MX report only all year
001Polychlorinated biphenyls [PCBs]DAILY MX <= .00007556 lb/d all year
001DiazinonDAILY MX report only all year
001HexachlorobenzeneDAILY MX report only all year
001Flow, in conduit or thru treatment plant30DA AVG report only all year
001Flow, in conduit or thru treatment plant7 DA AVG report only all year
001Chlorine, total residualINST MAX <= 11 ug/L all year
001E. coli30DAVGEO <= 126 CFU/100mL all year
001E. coliDAILY MX <= 410 CFU/100mL all year
001E. coli30DAVGEO <= 42.5 BCFU/d all year
0013,4-BenzofluorantheneDAILY MX report only all year
001MethylmercuryDAILY MX report only all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
TX1Whole Effluent Toxicity [WET] - C. dubiaMN VALUE >= 95 % all year
TX1Whole Effluent Toxicity [WET] - C. dubiaMN VALUE >= 95 % all year
TX1Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiaVALUE report only all year
TX1Pass/Fail Static Renewal 7Day Chronic Pimephales promelasVALUE report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubiaVALUE report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelasVALUE report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaVALUE report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelasVALUE report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaVALUE report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasVALUE report only all year
TX1Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubiaVALUE report only all year
TX1Coef Of Var Static Renewal 7Day Chronic Pimephales promelasVALUE report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubiaVALUE report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelasVALUE report only all year
TX1LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubiaVALUE report only all year
TX1LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelasVALUE 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