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Los Alamos National Laboratory

Federal facility (Crude Petroleum Pipelines), major discharger, Los Alamo, New Mexico. NPDES permit NM0028355, in force until Oct 31, 2028. Last 12 months: over a limit 5 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (17 values), outfall 022 form A monthly (5 values), outfall 022 form Q quarterly (2 values), outfall 027 form A monthly (7 values), outfall 027 form Q quarterly (6 values), outfall 048 form A monthly (5 values), and 33 more forms
Last report on file
August 2026
Oct 2024 – Sep 2025
3 values over a limit, 0 required values missing, 2 of 210 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingOutfallParameterReportedLimitOver by
November 2025199Chlorine, total residual, instantaneous maximum.34 mg/L≤ .011 mg/L2991%
December 2025022Polychlorinated biphenyls [PCBs], daily maximum.013 ug/L≤ .00064 ug/L1931%
December 2025022Polychlorinated biphenyls [PCBs], monthly average.0105 ug/L≤ .00064 ug/L1541%
January 2026001E. coli, daily maximum2419.6 CFU/100mL≤ 410 CFU/100mL490%
July 2026022Chlorine, total residual, instantaneous maximum.05 mg/L≤ .011 mg/L355%

Limits in force (263)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cdaily maximum≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 73 lb/dall year001
BOD, 5-day, 20 deg. Cdaily maximum≤ 109 lb/dall year001
pHminimum≥ 6.6 SUall year001
pHmaximum≤ 8.8 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendeddaily maximum≤ 100 mg/Lall year001
Solids, total suspendedmonthly averagereport only (lb/d)all year001
Solids, total suspendeddaily maximumreport only (lb/d)all year001
Copper, total [as Cu]monthly average≤ .0087 mg/Lall year001
Copper, total [as Cu]daily maximum≤ .0087 mg/Lall year001
Thallium, total [as Tl]monthly average≤ .00047 mg/Lall year001
Thallium, total [as Tl]daily maximum≤ .00047 mg/Lall year001
Zinc, total [as Zn]monthly average≤ .126 mg/Lall year001
Zinc, total [as Zn]daily maximum≤ .126 mg/Lall year001
Aluminum, total recoverablemonthly averagereport only (mg/L)all year001
Aluminum, total recoverabledaily maximumreport only (mg/L)all year001
Polychlorinated biphenyls [PCBs]monthly average≤ .00064 ug/Lall year001
Polychlorinated biphenyls [PCBs]daily maximum≤ .00064 ug/Lall year001
Polychlorinated biphenyls [PCBs]monthly averagereport only (lb/d)all year001
Polychlorinated biphenyls [PCBs]daily maximumreport only (lb/d)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualinstantaneous maximum≤ .011 mg/Lall year001
E. colimonthly geometric mean≤ 126 CFU/100mLall year001
E. colidaily maximum≤ 410 CFU/100mLall year001
6T3 Temperaturevaluereport only (pass=0;fail=1)all year001
6T3 Temperaturevaluereport only (# exceed)all year001
pHminimum≥ 6 SUall year022
pHmaximum≤ 9 SUall year022
Solids, total suspendedmonthly average≤ 30 mg/Lall year022
Solids, total suspendeddaily maximum≤ 100 mg/Lall year022
Copper, total [as Cu]monthly averagereport only (mg/L)all year022
Copper, total [as Cu]daily maximumreport only (mg/L)all year022
Polychlorinated biphenyls [PCBs]monthly average≤ .00064 ug/Lall year022
Polychlorinated biphenyls [PCBs]daily maximum≤ .00064 ug/Lall year022
Polychlorinated biphenyls [PCBs]monthly averagereport only (lb/d)all year022
Polychlorinated biphenyls [PCBs]daily maximumreport only (lb/d)all year022
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year022
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year022
Chlorine, total residualinstantaneous maximum≤ .011 mg/Lall year022
Alpha, gross adjustedmonthly averagereport only (pCi/L)all year022
Alpha, gross adjusteddaily maximumreport only (pCi/L)all year022
Mercury, total [as Hg]monthly averagereport only (mg/L)all year022
Mercury, total [as Hg]daily maximumreport only (mg/L)all year022
Temperature, water deg. centigrademonthly averagereport only (deg C)all year027
Temperature, water deg. centigradedaily maximumreport only (deg C)all year027
pHminimum≥ 6.6 SUall year027
pHmaximum≤ 8.8 SUall year027
Solids, total suspendedmonthly average≤ 30 mg/Lall year027
Solids, total suspendeddaily maximum≤ 100 mg/Lall year027
Phosphorus, total [as P]monthly average≤ 20 mg/Lall year027
Phosphorus, total [as P]daily maximum≤ 40 mg/Lall year027
Copper, total [as Cu]monthly average≤ .0087 mg/Lall year027
Copper, total [as Cu]daily maximum≤ .0087 mg/Lall year027
Aluminum, total recoverablemonthly averagereport only (mg/L)all year027
Aluminum, total recoverabledaily maximumreport only (mg/L)all year027
Polychlorinated biphenyls [PCBs]monthly average≤ .00064 ug/Lall year027
Polychlorinated biphenyls [PCBs]daily maximum≤ .000642 ug/Lall year027
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year027
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year027
Chlorine, total residualinstantaneous maximum≤ .011 mg/Lall year027
E. colimonthly geometric mean≤ 548 CFU/100mLall year027
E. colidaily maximum≤ 2507 CFU/100mLall year027
Mercury, total [as Hg]monthly average≤ .126 mg/Lall year027
Mercury, total [as Hg]daily maximum≤ .126 mg/Lall year027
pHminimum≥ 6 SUall year048
pHmaximum≤ 9 SUall year048
Solids, total suspendedmonthly average≤ 30 mg/Lall year048
Solids, total suspendeddaily maximum≤ 100 mg/Lall year048
Phosphorus, total [as P]monthly average≤ 20 mg/Lall year048
Phosphorus, total [as P]daily maximum≤ 40 mg/Lall year048
Cyanide, total [as CN]monthly averagereport only (mg/L)all year048
Cyanide, total [as CN]daily maximumreport only (mg/L)all year048
Chromium, hexavalent [as Cr]monthly average≤ .016 mg/Lall year048
Chromium, hexavalent [as Cr]daily maximum≤ .016 mg/Lall year048
Selenium, total [as Se]monthly averagereport only (mg/L)all year048
Selenium, total [as Se]daily maximumreport only (mg/L)all year048
Polychlorinated biphenyls [PCBs]monthly average≤ .00064 ug/Lall year048
Polychlorinated biphenyls [PCBs]daily maximum≤ .00064 ug/Lall year048
Polychlorinated biphenyls [PCBs]monthly averagereport only (lb/d)all year048
Polychlorinated biphenyls [PCBs]daily maximumreport only (lb/d)all year048
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year048
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year048
Chlorine, total residualinstantaneous maximum≤ .011 mg/Lall year048
Alpha, gross adjustedmonthly averagereport only (pCi/L)all year048
Alpha, gross adjusteddaily maximumreport only (pCi/L)all year048
Mercury, total [as Hg]monthly averagereport only (mg/L)all year048
Mercury, total [as Hg]daily maximumreport only (mg/L)all year048
Oxygen demand, chem. [high level] [COD]monthly average≤ 125 mg/Lall year051
Oxygen demand, chem. [high level] [COD]daily maximum≤ 125 mg/Lall year051
pHminimum≥ 6 SUall year051
pHmaximum≤ 9 SUall year051
Solids, total suspendedmonthly average≤ 30 mg/Lall year051
Solids, total suspendeddaily maximum≤ 45 mg/Lall year051
Solids, total suspendedmonthly average≤ 73 lb/dall year051
Solids, total suspendeddaily maximum≤ 109 lb/dall year051
Hardness, total [as CaCO3]monthly average minimum≥ 50 mg/Lall year051
Copper, total [as Cu]monthly average≤ .0105 mg/Lall year051
Copper, total [as Cu]daily maximum≤ .0105 mg/Lall year051
Thallium, total [as Tl]monthly averagereport only (mg/L)all year051
Thallium, total [as Tl]daily maximumreport only (mg/L)all year051
Radium 226 + radium 228, totalmonthly average≤ 30 pCi/Lall year051
Radium 226 + radium 228, totaldaily maximum≤ 30 pCi/Lall year051
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year051
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year051
Chlorine, total residualinstantaneous maximum≤ .011 mg/Lall year051
Perchlorate [ClO4]monthly averagereport only (mg/L)all year051
Perchlorate [ClO4]daily maximumreport only (mg/L)all year051
Organics, total toxic [TTO]monthly average≤ 1 mg/Lall year051
Organics, total toxic [TTO]daily maximum≤ 1 mg/Lall year051
Alpha gross radioactivitymonthly averagereport only (pCi/L)all year051
Alpha gross radioactivitydaily maximumreport only (pCi/L)all year051
Oxygen demand, chem. [high level] [COD]monthly average≤ 125 mg/Lall year055
Oxygen demand, chem. [high level] [COD]daily maximum≤ 125 mg/Lall year055
pHminimum≥ 6 SUall year055
pHmaximum≤ 9 SUall year055
Solids, total suspendedmonthly average≤ 30 mg/Lall year055
Solids, total suspendeddaily maximum≤ 45 mg/Lall year055
Oil & Greasemonthly average≤ 15 mg/Lall year055
Oil & Greasedaily maximum≤ 15 mg/Lall year055
Selenium, total recoverablemonthly average≤ .005 mg/Lall year055
Selenium, total recoverabledaily maximum≤ .005 mg/Lall year055
Copper, total [as Cu]monthly average≤ .0009 mg/Lall year055
Copper, total [as Cu]daily maximum≤ .0009 mg/Lall year055
Lead, total [as Pb]monthly average≤ .004 mg/Lall year055
Lead, total [as Pb]daily maximum≤ .004 mg/Lall year055
Zinc, total [as Zn]monthly average≤ .013 mg/Lall year055
Zinc, total [as Zn]daily maximum≤ .013 mg/Lall year055
Aluminum, total recoverablemonthly average≤ .027 mg/Lall year055
Aluminum, total recoverabledaily maximum≤ .027 mg/Lall year055
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year055
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year055
Perchlorate [ClO4]monthly averagereport only (mg/L)all year055
Perchlorate [ClO4]daily maximumreport only (mg/L)all year055
Organics, total toxic [TTO]monthly average≤ 1 mg/Lall year055
Organics, total toxic [TTO]daily maximum≤ 1 mg/Lall year055
Trinitrotoluene [TNT], totalmonthly average≤ .02 mg/Lall year055
Trinitrotoluene [TNT], totaldaily maximumreport only (mg/L)all year055
RDX, totalmonthly average≤ .2 mg/Lall year055
RDX, totaldaily maximum≤ .66 mg/Lall year055
pHminimum≥ 6 SUall year113
pHmaximum≤ 9 SUall year113
Solids, total suspendedmonthly average≤ 30 mg/Lall year113
Solids, total suspendeddaily maximum≤ 100 mg/Lall year113
Phosphorus, total [as P]monthly average≤ 20 mg/Lall year113
Phosphorus, total [as P]daily maximum≤ 40 mg/Lall year113
Chromium, hexavalent [as Cr]monthly average≤ .016 mg/Lall year113
Chromium, hexavalent [as Cr]daily maximum≤ .016 mg/Lall year113
Aluminum, total recoverablemonthly averagereport only (mg/L)all year113
Aluminum, total recoverabledaily maximumreport only (mg/L)all year113
Polychlorinated biphenyls [PCBs]monthly average≤ .00064 ug/Lall year113
Polychlorinated biphenyls [PCBs]daily maximum≤ .00064 ug/Lall year113
Polychlorinated biphenyls [PCBs]monthly averagereport only (lb/d)all year113
Polychlorinated biphenyls [PCBs]daily maximumreport only (lb/d)all year113
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year113
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year113
Chlorine, total residualinstantaneous maximum≤ .011 mg/Lall year113
Alpha, gross adjustedmonthly averagereport only (pCi/L)all year113
Alpha, gross adjusteddaily maximumreport only (pCi/L)all year113
Mercury, total [as Hg]monthly averagereport only (mg/L)all year113
Mercury, total [as Hg]daily maximumreport only (mg/L)all year113
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year13S
BOD, 5-day, 20 deg. Cdaily maximum≤ 45 mg/Lall year13S
BOD, 5-day, 20 deg. Cmonthly average≤ 73 lb/dall year13S
BOD, 5-day, 20 deg. Cdaily maximum≤ 109 lb/dall year13S
pHminimum≥ 6 SUall year13S
pHmaximum≤ 9 SUall year13S
Solids, total suspendedmonthly average≤ 30 mg/Lall year13S
Solids, total suspendeddaily maximum≤ 45 mg/Lall year13S
Solids, total suspendedmonthly average≤ 73 lb/dall year13S
Solids, total suspendeddaily maximum≤ 109 lb/dall year13S
Thallium, total [as Tl]monthly average≤ .00047 mg/Lall year13S
Thallium, total [as Tl]daily maximum≤ .00047 mg/Lall year13S
Polychlorinated biphenyls [PCBs]monthly average≤ .00064 ug/Lall year13S
Polychlorinated biphenyls [PCBs]daily maximum≤ .00064 ug/Lall year13S
Polychlorinated biphenyls [PCBs]monthly averagereport only (lb/d)all year13S
Polychlorinated biphenyls [PCBs]daily maximumreport only (lb/d)all year13S
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year13S
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year13S
Chlorine, total residualinstantaneous maximum≤ .011 mg/Lall year13S
E. colimonthly geometric mean≤ 548 CFU/100mLall year13S
E. colidaily maximum≤ 2507 CFU/100mLall year13S
Alpha, gross adjustedmonthly averagereport only (pCi/L)all year13S
Alpha, gross adjusteddaily maximumreport only (pCi/L)all year13S
pHminimum≥ 6 SUall year160
pHmaximum≤ 9 SUall year160
Solids, total suspendedmonthly average≤ 30 mg/Lall year160
Solids, total suspendeddaily maximum≤ 100 mg/Lall year160
Phosphorus, total [as P]monthly average≤ 20 mg/Lall year160
Phosphorus, total [as P]daily maximum≤ 40 mg/Lall year160
Thallium, total [as Tl]monthly average≤ .00047 mg/Lall year160
Thallium, total [as Tl]daily maximum≤ .00047 mg/Lall year160
Polychlorinated biphenyls [PCBs]monthly average≤ .00064 ug/Lall year160
Polychlorinated biphenyls [PCBs]daily maximum≤ .00064 ug/Lall year160
Polychlorinated biphenyls [PCBs]monthly averagereport only (lb/d)all year160
Polychlorinated biphenyls [PCBs]daily maximumreport only (lb/d)all year160
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year160
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year160
Chlorine, total residualinstantaneous maximum≤ .011 mg/Lall year160
Alpha, gross adjustedmonthly averagereport only (pCi/L)all year160
Alpha, gross adjusteddaily maximumreport only (pCi/L)all year160
pHminimum≥ 6 SUall year181
pHmaximum≤ 9 SUall year181
Solids, total suspendedmonthly average≤ 30 mg/Lall year181
Solids, total suspendeddaily maximum≤ 100 mg/Lall year181
Phosphorus, total [as P]monthly average≤ 20 mg/Lall year181
Phosphorus, total [as P]daily maximum≤ 40 mg/Lall year181
Copper, total [as Cu]monthly averagereport only (mg/L)all year181
Copper, total [as Cu]daily maximumreport only (mg/L)all year181
Polychlorinated biphenyls [PCBs]monthly average≤ .00064 ug/Lall year181
Polychlorinated biphenyls [PCBs]daily maximum≤ .00064 ug/Lall year181
Polychlorinated biphenyls [PCBs]monthly averagereport only (lb/d)all year181
Polychlorinated biphenyls [PCBs]daily maximumreport only (lb/d)all year181
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year181
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year181
Chlorine, total residualinstantaneous maximum≤ .011 mg/Lall year181
Alpha, gross adjustedmonthly averagereport only (pCi/L)all year181
Alpha, gross adjusteddaily maximumreport only (pCi/L)all year181
Temperature, water deg. centigrademonthly averagereport only (deg C)all year199
Temperature, water deg. centigradedaily maximumreport only (deg C)all year199
pHminimum≥ 6.6 SUall year199
pHmaximum≤ 8.8 SUall year199
Solids, total suspendedmonthly average≤ 30 mg/Lall year199
Solids, total suspendeddaily maximum≤ 100 mg/Lall year199
Phosphorus, total [as P]monthly average≤ 20 mg/Lall year199
Phosphorus, total [as P]daily maximum≤ 40 mg/Lall year199
Copper, total [as Cu]monthly averagereport only (mg/L)all year199
Copper, total [as Cu]daily maximumreport only (mg/L)all year199
Thallium, total [as Tl]monthly average≤ .00047 mg/Lall year199
Thallium, total [as Tl]daily maximum≤ .00047 mg/Lall year199
Polychlorinated biphenyls [PCBs]monthly average≤ .00064 ug/Lall year199
Polychlorinated biphenyls [PCBs]daily maximum≤ .00064 ug/Lall year199
Polychlorinated biphenyls [PCBs]monthly averagereport only (lb/d)all year199
Polychlorinated biphenyls [PCBs]daily maximumreport only (lb/d)all year199
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year199
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year199
Chlorine, total residualinstantaneous maximum≤ .011 mg/Lall year199
Whole effluent toxicity - retest #1valuereport only (pass=0;fail=1)all yearT051
Whole effluent toxicity - retest #2valuereport only (pass=0;fail=1)all yearT051
Whole Effluent Toxicity [WET] - D. pulexminimum value≥ 100 %all yearT051
Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulexvaluereport only (pass=0;fail=1)all yearT051
NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulexvaluereport only (%)all yearT051
Coef Of Var Static Renewal 48Hr Acute D. pulexvaluereport only (%)all yearT051
Whole effluent toxicity - retest #1valuereport only (pass=0;fail=1)all yearTX1
Whole effluent toxicity - retest #2valuereport only (pass=0;fail=1)all yearTX1
Whole Effluent Toxicity - Retest #3valuereport only (pass=0;fail=1)all yearTX1
Whole Effluent Toxicity [WET] - C. dubiaminimum value≥ 100 %all yearTX1
Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiavaluereport only (pass=0;fail=1)all yearTX1
Pass/Fail Static Renewal 7Day Chronic Pimephales promelasvaluereport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubiavaluereport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelasvaluereport only (pass=0;fail=1)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiavaluereport only (%)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelasvaluereport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiavaluereport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasvaluereport only (%)all yearTX1
Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubiavaluereport only (%)all yearTX1
Coef Of Var Static Renewal 7Day Chronic Pimephales promelasvaluereport only (%)all yearTX1
LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubiavaluereport only (%)all yearTX1
LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelasvaluereport only (%)all yearTX1
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubiavaluereport only (%)all yearTX1
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelasvaluereport only (%)all yearTX1

New limits from Jan 1, 2027

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Thallium, total [as Tl], daily maximum0.00047 mg/Lnew——
Thallium, total [as Tl], monthly average0.00047 mg/Lnew——

How strict are these limits?

Cited limits by parameter: New Mexico's rules and the federal ones.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/NM0028355 · MCP: https://passage-data.com/mcp