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Gallup, City of

Sewerage Systems, major discharger, Gallup, New Mexico. NPDES permit NM0020672, in force until Oct 31, 2030. Last 12 months: over a limit 113 times (last August 2026), 209 required values missing, 10 of 23 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A monthly (49 values), outfall TX1 form A monthly (16 values), outfall 001 form S twice a year
Last report on file
August 2026
Oct 2024 – Sep 2025
29 values over a limit, 0 required values missing, 4 of 16 reports late

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

All 113 values over a limit
Period endingOutfallParameterReportedLimitOver by
October 2025001BOD, 5-day, 20 deg. C, 30-day average74.7 mg/L≤ 30 mg/L149%
October 2025001Di[2-ethylhexyl] phthalate [DEHP], daily maximum.037 lb/d≤ .035 lb/d6%
October 2025001Di[2-ethylhexyl] phthalate [DEHP], daily maximum2 ug/L≤ 1.2 ug/L67%
October 2025001Solids, total suspended, 30-day average280 mg/L≤ 30 mg/L833%
October 2025001Solids, total suspended, 30-day average2892.72 lb/d≤ 876 lb/d230%
October 2025001Solids, total suspended, 7-day average219.5 mg/L≤ 45 mg/L388%
November 2025001BOD, 5-day, 20 deg. C, 30-day average1246.5 lb/d≤ 789 lb/d58%
November 2025001BOD, 5-day, 20 deg. C, 30-day average78.5 mg/L≤ 27 mg/L191%
November 2025001BOD, 5-day, 20 deg. C, 7-day average1027.2 lb/d≤ 964 lb/d7%
November 2025001BOD, 5-day, 20 deg. C, 7-day average65.2 mg/L≤ 33 mg/L98%
November 2025001BOD, 5-day, percent removal, monthly average minimum77.4 %≥ 85 %51%
November 2025001Di[2-ethylhexyl] phthalate [DEHP], 30-day average1.8 ug/L≤ 1.2 ug/L50%
November 2025001Di[2-ethylhexyl] phthalate [DEHP], daily maximum.036 lb/d≤ .035 lb/d3%
November 2025001Di[2-ethylhexyl] phthalate [DEHP], daily maximum2.5 ug/L≤ 1.2 ug/L108%
November 2025001Nitrogen, ammonia total [as N], 30-day average36.5 mg/g≤ 11.8 mg/L—
November 2025001Solids, suspended percent removal, monthly average minimum66.9 %≥ 85 %121%
November 2025001Solids, total suspended, 30-day average1370.5 lb/d≤ 876 lb/d56%
November 2025001Solids, total suspended, 30-day average87 mg/L≤ 30 mg/L190%
November 2025001Solids, total suspended, 7-day average75 mg/L≤ 45 mg/L67%
December 2025001BOD, 5-day, 20 deg. C, 30-day average31.6 mg/L≤ 27 mg/L17%
December 2025001BOD, 5-day, 20 deg. C, 7-day average36.5 mg/L≤ 33 mg/L11%
December 2025001Copper, total [as Cu], 30-day average19 ug/L≤ 14.5 ug/L31%
December 2025001Di[2-ethylhexyl] phthalate [DEHP], daily maximum2.2 ug/L≤ 1.2 ug/L83%
December 2025001Nitrogen, ammonia total [as N], 30-day average42 mg/g≤ 11.8 mg/L—
December 2025001Solids, suspended percent removal, monthly average minimum84.4 %≥ 85 %4%
December 2025001Solids, total suspended, 30-day average38.2 mg/L≤ 30 mg/L27%
December 2025TX1Whole Effluent Toxicity [WET] - C. dubia, minimum value≥ 80 %≥ 88 %9%
December 2025TX1Whole Effluent Toxicity [WET] - P. promelas, minimum value≥ 80 %≥ 88 %9%
January 2026001E. coli, daily maximum689 MPN/100mL≤ 235 MPN/100mL193%
January 2026001Nitrogen, ammonia total [as N], 30-day average33 mg/g≤ 11.8 mg/L—
January 2026001Solids, suspended percent removal, monthly average minimum68.5 %≥ 85 %110%
January 2026001Solids, total suspended, 30-day average66.8 mg/L≤ 30 mg/L123%
January 2026001Solids, total suspended, 30-day average953.8 lb/d≤ 876 lb/d9%
January 2026001Solids, total suspended, 7-day average59 mg/L≤ 45 mg/L31%
February 2026001BOD, 5-day, 20 deg. C, 30-day average35.3 mg/L≤ 27 mg/L31%
February 2026001BOD, 5-day, 20 deg. C, 7-day average55 mg/L≤ 33 mg/L67%
February 2026001E. coli, daily maximum398 MPN/100mL≤ 235 MPN/100mL69%
February 2026001Nitrogen, ammonia total [as N], 30-day average29.3 mg/g≤ 11.8 mg/L—
February 2026001Solids, suspended percent removal, monthly average minimum65.5 %≥ 85 %130%
February 2026001Solids, total suspended, 30-day average1128.5 lb/d≤ 876 lb/d29%
February 2026001Solids, total suspended, 30-day average82 mg/L≤ 30 mg/L173%
February 2026001Solids, total suspended, 7-day average110 mg/L≤ 45 mg/L144%
February 2026TX1Whole Effluent Toxicity [WET] - C. dubia, minimum value75 %≥ 88 %15%
February 2026TX1Whole Effluent Toxicity [WET] - P. promelas, minimum value42 %≥ 88 %52%
March 2026001Di[2-ethylhexyl] phthalate [DEHP], daily maximum.039 lb/d≤ .035 lb/d11%
March 2026001Di[2-ethylhexyl] phthalate [DEHP], daily maximum2.8 ug/L≤ 1.2 ug/L133%
March 2026001Nitrogen, ammonia total [as N], 30-day average31.67 mg/g≤ 11.8 mg/L—
April 2026001Di[2-ethylhexyl] phthalate [DEHP], daily maximum.037 lb/d≤ .035 lb/d6%
April 2026001Di[2-ethylhexyl] phthalate [DEHP], daily maximum.037 lb/d≤ .035 lb/d6%
April 2026001Di[2-ethylhexyl] phthalate [DEHP], daily maximum2.9 ug/L≤ 1.2 ug/L142%
April 2026001Di[2-ethylhexyl] phthalate [DEHP], daily maximum2.9 ug/L≤ 1.2 ug/L142%
April 2026001Nitrogen, ammonia total [as N], 30-day average33.8 mg/L≤ 11.8 mg/L186%
April 2026001Nitrogen, ammonia total [as N], 30-day average33.8 mg/L≤ 11.8 mg/L186%
April 2026001Solids, total dissolved, 30-day average1200 mg/L≤ 400 mg/L200%
April 2026001Solids, total dissolved, 30-day average1200 mg/L≤ 400 mg/L200%
April 2026001Solids, total dissolved, 30-day average15512.4 lb/d≤ 11683 lb/d33%
April 2026001Solids, total dissolved, 30-day average15512.4 lb/d≤ 11683 lb/d33%
April 2026TX1Whole Effluent Toxicity [WET] - C. dubia, minimum value56 %≥ 88 %36%
April 2026TX1Whole Effluent Toxicity [WET] - C. dubia, minimum value56 %≥ 88 %36%
April 2026TX1Whole Effluent Toxicity [WET] - P. promelas, minimum value42 %≥ 88 %52%
April 2026TX1Whole Effluent Toxicity [WET] - P. promelas, minimum value42 %≥ 88 %52%
May 2026001BOD, 5-day, 20 deg. C, 30-day average38.3 mg/L≤ 27 mg/L42%
May 2026001BOD, 5-day, 20 deg. C, 30-day average38.3 mg/L≤ 27 mg/L42%
May 2026001BOD, 5-day, 20 deg. C, 7-day average3194.2 lb/d≤ 964 lb/d231%
May 2026001BOD, 5-day, 20 deg. C, 7-day average3194.2 lb/d≤ 964 lb/d231%
May 2026001BOD, 5-day, 20 deg. C, 7-day average38.3 mg/L≤ 33 mg/L16%
May 2026001BOD, 5-day, 20 deg. C, 7-day average38.3 mg/L≤ 33 mg/L16%
May 2026001Chloroform, daily maximum.29 lb/d≤ .166 lb/d75%
May 2026001Chloroform, daily maximum.29 lb/d≤ .166 lb/d75%
May 2026001Copper, total [as Cu], 30-day average20 ug/L≤ 14.5 ug/L38%
May 2026001Copper, total [as Cu], 30-day average20 ug/L≤ 14.5 ug/L38%
May 2026001Di[2-ethylhexyl] phthalate [DEHP], daily maximum6.1 ug/L≤ 1.2 ug/L408%
May 2026001Di[2-ethylhexyl] phthalate [DEHP], daily maximum6.1 ug/L≤ 1.2 ug/L408%
May 2026001Nitrogen, ammonia total [as N], 30-day average31.1 mg/L≤ 11.8 mg/L164%
May 2026001Nitrogen, ammonia total [as N], 30-day average31.1 mg/L≤ 11.8 mg/L164%
May 2026001Solids, total suspended, 30-day average53.7 mg/L≤ 30 mg/L79%
May 2026001Solids, total suspended, 30-day average53.7 mg/L≤ 30 mg/L79%
May 2026001Solids, total suspended, 7-day average120 mg/L≤ 45 mg/L167%
May 2026001Solids, total suspended, 7-day average120 mg/L≤ 45 mg/L167%
May 2026TX1Whole Effluent Toxicity [WET] - C. dubia, minimum value0 %≥ 88 %100%
May 2026TX1Whole Effluent Toxicity [WET] - P. promelas, minimum value0 %≥ 88 %100%
June 2026001BOD, 5-day, 20 deg. C, 30-day average29.2 mg/L≤ 27 mg/L8%
June 2026001BOD, 5-day, 20 deg. C, 7-day average41 mg/L≤ 33 mg/L24%
June 2026001Chloroform, daily maximum.26 lb/d≤ .166 lb/d57%
June 2026001Di[2-ethylhexyl] phthalate [DEHP], 30-day average2.6 ug/L≤ 1.2 ug/L117%
June 2026001Di[2-ethylhexyl] phthalate [DEHP], daily maximum.052 lb/d≤ .035 lb/d49%
June 2026001Di[2-ethylhexyl] phthalate [DEHP], daily maximum4.2 ug/L≤ 1.2 ug/L250%
June 2026001Nitrogen, ammonia total [as N], 30-day average33.1 mg/L≤ 11.8 mg/L181%
June 2026001Solids, suspended percent removal, monthly average minimum79.8 %≥ 85 %35%
June 2026001Solids, total dissolved, 30-day average1200 mg/L≤ 400 mg/L200%
June 2026001Solids, total dissolved, 30-day average15012 lb/d≤ 11683 lb/d28%
June 2026001Solids, total suspended, 30-day average53.7 mg/L≤ 30 mg/L79%
June 2026001Solids, total suspended, 7-day average74 mg/L≤ 45 mg/L64%
June 2026TX1Whole Effluent Toxicity [WET] - C. dubia, minimum value56 %≥ 88 %36%
June 2026TX1Whole Effluent Toxicity [WET] - P. promelas, minimum value42 %≥ 88 %52%
July 2026TX1Whole Effluent Toxicity [WET] - C. dubia, minimum value42 %≥ 88 %52%
July 2026TX1Whole Effluent Toxicity [WET] - P. promelas, minimum value42 %≥ 88 %52%
August 2026001BOD, 5-day, 20 deg. C, 30-day average151 mg/L≤ 27 mg/L459%
August 2026001BOD, 5-day, 20 deg. C, 30-day average1889 lb/d≤ 789 lb/d139%
August 2026001BOD, 5-day, 20 deg. C, 7-day average250 mg/L≤ 33 mg/L658%
August 2026001BOD, 5-day, 20 deg. C, 7-day average3127 lb/d≤ 964 lb/d224%
August 2026001BOD, 5-day, percent removal, monthly average minimum60 %≥ 85 %167%
August 2026001Di[2-ethylhexyl] phthalate [DEHP], 30-day average.04 lb/d≤ .035 lb/d14%
August 2026001Di[2-ethylhexyl] phthalate [DEHP], daily maximum.105 lb/d≤ .035 lb/d200%
August 2026001Di[2-ethylhexyl] phthalate [DEHP], daily maximum2 ug/L≤ 1.2 ug/L67%
August 2026001Nitrogen, ammonia total [as N], 30-day average29.6 mg/L≤ 11.8 mg/L151%
August 2026001Solids, suspended percent removal, monthly average minimum59.1 %≥ 85 %173%
August 2026001Solids, total dissolved, 30-day average1200 mg/L≤ 400 mg/L200%
August 2026001Solids, total dissolved, 30-day average15012 lb/d≤ 11683 lb/d28%
August 2026001Solids, total suspended, 30-day average228 mg/L≤ 30 mg/L660%
August 2026001Solids, total suspended, 30-day average2960 lb/d≤ 876 lb/d238%
August 2026001Solids, total suspended, 7-day average510 mg/L≤ 45 mg/L1033%
August 2026001Solids, total suspended, 7-day average6380.1 lb/d≤ 1314 lb/d386%

Limits in force (69)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. C30-day average≤ 27 mg/Lall year001
BOD, 5-day, 20 deg. C7-day average≤ 33 mg/Lall year001
BOD, 5-day, 20 deg. C30-day average≤ 789 lb/dall year001
BOD, 5-day, 20 deg. C7-day average≤ 964 lb/dall year001
BOD, 5-day, 20 deg. C30-day averagereport only (lb/d)all year001
pHminimum≥ 6.6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspended30-day average≤ 30 mg/Lall year001
Solids, total suspended7-day average≤ 45 mg/Lall year001
Solids, total suspended30-day average≤ 876 lb/dall year001
Solids, total suspended7-day average≤ 1314 lb/dall year001
Solids, total suspended30-day averagereport only (lb/d)all year001
Nitrogen, ammonia total [as N]30-day average≤ 11.8 mg/Lall year001
Fluoride, total [as F]30-day average≤ 1750 ug/Lall year001
Copper, total [as Cu]30-day average≤ 14.5 ug/Lall year001
Copper, total [as Cu]daily maximum≤ 21.8 ug/Lall year001
Copper, total [as Cu]30-day average≤ .42 lb/dall year001
Copper, total [as Cu]daily maximum≤ .64 lb/dall year001
Chloroform30-day average≤ 5.7 ug/Lall year001
Chloroformdaily maximum≤ 5.7 ug/Lall year001
Chloroform30-day average≤ .166 lb/dall year001
Chloroformdaily maximum≤ .166 lb/dall year001
Chlorodibromomethane30-day average≤ .4 ug/Lall year001
Chlorodibromomethanedaily maximum≤ .4 ug/Lall year001
Chlorodibromomethane30-day average≤ .012 lb/dall year001
Chlorodibromomethanedaily maximum≤ .012 lb/dall year001
Di[2-ethylhexyl] phthalate [DEHP]30-day average≤ 1.2 ug/Lall year001
Di[2-ethylhexyl] phthalate [DEHP]daily maximum≤ 1.2 ug/Lall year001
Di[2-ethylhexyl] phthalate [DEHP]30-day average≤ .035 lb/dall year001
Di[2-ethylhexyl] phthalate [DEHP]daily maximum≤ .035 lb/dall year001
Flow, in conduit or thru treatment plant30-day averagereport only (MGD)all year001
Flow, in conduit or thru treatment plant7-day averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualinstantaneous maximum≤ 11 ug/Lall year001
E. coli30-day geometric mean≤ 126 MPN/100mLall year001
E. colidaily maximum≤ 235 MPN/100mLall year001
PER-AND POLYFLUOROALKYL SUBSTANCESdaily maximumreport only (ng/L)all year001
PER-AND POLYFLUOROALKYL SUBSTANCESdaily maximumreport only (ng/L)all year001
PER-AND POLYFLUOROALKYL SUBSTANCESdaily maximumreport only (ng/g)all year001
Solids, total dissolved30-day averagereport only (mg/L)all year001
Solids, total dissolveddaily maximumreport only (mg/L)all year001
Solids, total dissolved30-day averagereport only (lb/d)all year001
Solids, total dissolved30-day average≤ 400 mg/Lall year001
Solids, total dissolveddaily maximumreport only (mg/L)all year001
Solids, total dissolved30-day average≤ 11683 lb/dall year001
Solids, total dissolveddaily maximumreport only (lb/d)all year001
Solids, total dissolved30-day averagereport only (mg/L)all year001
Solids, total dissolveddaily maximumreport only (mg/L)all year001
Solids, total dissolved30-day averagereport only (lb/d)all year001
Mercury, total [as Hg]7-day averagereport only (mg/L)all year001
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
PFAS Sumdaily maximumreport only (ng/L)all year001
Whole Effluent Toxicity [WET] - C. dubiaminimum value≥ 88 %all yearTX1
Whole Effluent Toxicity [WET] - P. promelasminimum value≥ 88 %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 Nov 1, 2028

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Fluoride, total [as F], 30-day average1512 ug/Ltighter910 ug/L (7 values)0.602×
Nitrogen, ammonia total [as N], 30-day average0.15 mg/Ltighter29300 mg/L (9 values)check the permit

Check the permit: no written limit or plant report supports these values of EPA's. Each is a nutrient limit under 0.0005 mg/L, a unit the parameter is not measured in, or a median over 1,000 times the limit. Read the permit before relying on it.

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/NM0020672 · MCP: https://passage-data.com/mcp