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Los Ojos State Fish Hatchery

Fish Hatcheries And Preserves, Los Ojos, New Mexico. NPDES permit NM0030139, in force until Nov 30, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 61 days after each period: outfall 001 form A quarterly (44 values), outfall 002 form A quarterly (44 values), outfall 01B form A quarterly (6 values), outfall 02B form A quarterly (6 values), outfall 001 form T every 60 months, outfall 002 form T every 60 months, and 2 more forms
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 48 reports late

Limits in force (184)

ParameterStatisticLimitMonthsOutfall
pHminimum≥ 6.6 SUall year001
pHminimum≥ 6.6 SUall year001
pHmaximum≤ 8.8 SUall year001
pHmaximum≤ 8.8 SUall year001
Solids, total suspendeddaily average≤ 10 mg/Lall year001
Solids, total suspendeddaily average≤ 10 mg/Lall year001
Solids, total suspendeddaily maximum≤ 15 mg/Lall year001
Solids, total suspendeddaily maximum≤ 15 mg/Lall year001
Solids, total suspendeddaily averagereport only (lb/d)all year001
Solids, total suspendeddaily averagereport only (lb/d)all year001
Solids, total suspendeddaily maximumreport only (lb/d)all year001
Solids, total suspendeddaily maximumreport only (lb/d)all year001
Solids, settleabledaily average≤ .1 mL/Lall year001
Solids, settleabledaily average≤ .1 mL/Lall year001
Solids, settleabledaily maximum≤ .5 mL/Lall year001
Solids, settleabledaily maximum≤ .5 mL/Lall year001
Nitrogen, total [as N]daily average≤ 1.9 mg/Lall year001
Nitrogen, total [as N]daily average≤ 1.9 mg/Lall year001
Nitrogen, total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, total [as N]daily average≤ 52.8 lb/dall year001
Nitrogen, total [as N]daily average≤ 52.8 lb/dall year001
Nitrogen, total [as N]daily maximumreport only (lb/d)all year001
Nitrogen, total [as N]daily maximumreport only (lb/d)all year001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]daily average≤ .4 mg/Lall year001
Phosphorus, total [as P]daily average≤ .4 mg/Lall year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]daily average≤ 11.1 lb/dall year001
Phosphorus, total [as P]daily average≤ 11.1 lb/dall year001
Phosphorus, total [as P]daily maximumreport only (lb/d)all year001
Phosphorus, total [as P]daily maximumreport only (lb/d)all year001
Aluminum, dissolved [as Al]daily maximumreport only (mg/L)all year001
2,4,5-Trichlorophenoxypropionic aciddaily maximumreport only (mg/L)all year001
Bis[chloromethyl] etherdaily maximumreport only (mg/L)all year001
2,4-Dichlorophenoxyacetic aciddaily maximumreport only (mg/L)all year001
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualinstantaneous maximum≤ 11 ug/Lall year001
Chlorine, total residualinstantaneous maximum≤ 11 ug/Lall year001
E. colidaily geometric mean≤ 126 CFU/100mLall year001
E. colidaily geometric mean≤ 126 CFU/100mLall year001
E. colidaily maximum≤ 235 CFU/100mLall year001
E. colidaily maximum≤ 235 CFU/100mLall year001
E. colidaily geometric mean≤ 16 BCFU/dall year001
E. colidaily geometric mean≤ 16 BCFU/dall year001
Nitrosamines daily maximumreport only (mg/L)all year001
2,4,5-Trichlorophenoldaily maximumreport only (mg/L)all year001
1,2,4,5-Tetrachlorobenzenedaily maximumreport only (mg/L)all year001
Pentachlorobenzenedaily maximumreport only (mg/L)all year001
Hexachlorocyclohexane, totaldaily maximumreport only (mg/L)all year001
N-Nitrosodiethylaminedaily maximumreport only (mg/L)all year001
N-Nitrosopyrrolidinedaily maximumreport only (mg/L)all year001
N-Nitrosodibutylaminedaily maximumreport only (mg/L)all year001
p-Chloro-m-cresoldaily maximumreport only (mg/L)all year001
pHminimum≥ 6.6 SUall year002
pHminimum≥ 6.6 SUall year002
pHmaximum≤ 8.8 SUall year002
pHmaximum≤ 8.8 SUall year002
Solids, total suspendeddaily average≤ 10 mg/Lall year002
Solids, total suspendeddaily average≤ 10 mg/Lall year002
Solids, total suspendeddaily maximum≤ 15 mg/Lall year002
Solids, total suspendeddaily maximum≤ 15 mg/Lall year002
Solids, total suspendeddaily averagereport only (lb/d)all year002
Solids, total suspendeddaily averagereport only (lb/d)all year002
Solids, total suspendeddaily maximumreport only (lb/d)all year002
Solids, total suspendeddaily maximumreport only (lb/d)all year002
Solids, settleabledaily average≤ .1 mL/Lall year002
Solids, settleabledaily average≤ .1 mL/Lall year002
Solids, settleabledaily maximum≤ .5 mL/Lall year002
Solids, settleabledaily maximum≤ .5 mL/Lall year002
Nitrogen, total [as N]daily average≤ 1.9 mg/Lall year002
Nitrogen, total [as N]daily average≤ 1.9 mg/Lall year002
Nitrogen, total [as N]daily maximumreport only (mg/L)all year002
Nitrogen, total [as N]daily maximumreport only (mg/L)all year002
Nitrogen, total [as N]daily average≤ 52.8 lb/dall year002
Nitrogen, total [as N]daily average≤ 52.8 lb/dall year002
Nitrogen, total [as N]daily maximumreport only (lb/d)all year002
Nitrogen, total [as N]daily maximumreport only (lb/d)all year002
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year002
Phosphorus, total [as P]daily average≤ .4 mg/Lall year002
Phosphorus, total [as P]daily average≤ .4 mg/Lall year002
Phosphorus, total [as P]daily maximumreport only (mg/L)all year002
Phosphorus, total [as P]daily maximumreport only (mg/L)all year002
Phosphorus, total [as P]daily average≤ 11.1 lb/dall year002
Phosphorus, total [as P]daily average≤ 11.1 lb/dall year002
Phosphorus, total [as P]daily maximumreport only (lb/d)all year002
Phosphorus, total [as P]daily maximumreport only (lb/d)all year002
Aluminum, dissolved [as Al]daily maximumreport only (mg/L)all year002
2,4,5-Trichlorophenoxypropionic aciddaily maximumreport only (mg/L)all year002
Bis[chloromethyl] etherdaily maximumreport only (mg/L)all year002
2,4-Dichlorophenoxyacetic aciddaily maximumreport only (mg/L)all year002
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Chlorine, total residualinstantaneous maximum≤ 11 ug/Lall year002
Chlorine, total residualinstantaneous maximum≤ 11 ug/Lall year002
E. colidaily geometric mean≤ 126 CFU/100mLall year002
E. colidaily geometric mean≤ 126 CFU/100mLall year002
E. colidaily maximum≤ 235 CFU/100mLall year002
E. colidaily maximum≤ 235 CFU/100mLall year002
E. colidaily geometric mean≤ 16 BCFU/dall year002
E. colidaily geometric mean≤ 16 BCFU/dall year002
Nitrosamines daily maximumreport only (mg/L)all year002
2,4,5-Trichlorophenoldaily maximumreport only (mg/L)all year002
1,2,4,5-Tetrachlorobenzenedaily maximumreport only (mg/L)all year002
Pentachlorobenzenedaily maximumreport only (mg/L)all year002
Hexachlorocyclohexane, totaldaily maximumreport only (mg/L)all year002
N-Nitrosodiethylaminedaily maximumreport only (mg/L)all year002
N-Nitrosopyrrolidinedaily maximumreport only (mg/L)all year002
N-Nitrosodibutylaminedaily maximumreport only (mg/L)all year002
p-Chloro-m-cresoldaily maximumreport only (mg/L)all year002
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year01B
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year01B
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year01B
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year01B
Chlorine, total residualinstantaneous maximum≤ 11 ug/Lall year01B
Chlorine, total residualinstantaneous maximum≤ 11 ug/Lall year01B
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year02B
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year02B
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year02B
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year02B
Chlorine, total residualinstantaneous maximum≤ 11 ug/Lall year02B
Chlorine, total residualinstantaneous maximum≤ 11 ug/Lall year02B
Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (pass=0;fail=1)all yearTX1
Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (pass=0;fail=1)all yearTX1
Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7-day minimumreport only (pass=0;fail=1)all yearTX1
Pass/Fail Static Renewal 7Day Chronic Pimephales promelasmonthly average minimumreport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (pass=0;fail=1)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (%)all yearTX1
Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX1
Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all yearTX1
Coef Of Var Static Renewal 7Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX1
Coef Of Var Static Renewal 7Day Chronic Pimephales promelasmonthly average minimumreport only (%)all yearTX1
LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX1
LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all yearTX1
LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX1
LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (%)all yearTX1
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX1
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all yearTX1
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX1
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (%)all yearTX1
Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (pass=0;fail=1)all yearTX2
Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (pass=0;fail=1)all yearTX2
Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7-day minimumreport only (pass=0;fail=1)all yearTX2
Pass/Fail Static Renewal 7Day Chronic Pimephales promelasmonthly average minimumreport only (pass=0;fail=1)all yearTX2
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (pass=0;fail=1)all yearTX2
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (pass=0;fail=1)all yearTX2
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (pass=0;fail=1)all yearTX2
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (pass=0;fail=1)all yearTX2
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX2
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all yearTX2
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX2
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (%)all yearTX2
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX2
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all yearTX2
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX2
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (%)all yearTX2
Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX2
Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all yearTX2
Coef Of Var Static Renewal 7Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX2
Coef Of Var Static Renewal 7Day Chronic Pimephales promelasmonthly average minimumreport only (%)all yearTX2
LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX2
LOEC Lethal Survival Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all yearTX2
LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX2
LOEC Lethal Survival Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (%)all yearTX2
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX2
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all yearTX2
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX2
LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (%)all yearTX2

How strict are these limits?

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

Same industry: the 6 Fishing, Hunting and Trapping permits in New Mexico.

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On EPA ECHO: Facility report · DMR history

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