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City of Springhill

Sewage treatment plant, major discharger, Springhill, Louisiana. NPDES permit LA0033227, in force until Apr 30, 2029. Last 12 months: over a limit 123 times (last August 2026), 26 of 37 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (17 values), form CE monthly (11 values), form PI monthly (11 values), form Q quarterly (18 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
134 values over a limit, 0 required values missing, 32 of 40 reports late

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

All 123 values over a limit
Period endingParameterReportedLimitOver by
October 2025BOD, carbonaceous [5 day, 20 C], monthly average10.2 mg/L≤ 5 mg/L104%
October 2025BOD, carbonaceous [5 day, 20 C], weekly average10.2 mg/L≤ 8 mg/L28%
October 2025Chlorine, total residual, instantaneous maximum1.02 mg/L≤ .033 mg/L2991%
October 2025Nitrogen, ammonia total [as N], monthly average115 lb/d≤ 13 lb/d785%
October 2025Nitrogen, ammonia total [as N], monthly average40 mg/L≤ 2 mg/L1900%
October 2025Nitrogen, ammonia total [as N], weekly average40.6 mg/L≤ 4 mg/L915%
October 2025Solids, total suspended, monthly average20 mg/L≤ 15 mg/L33%
October 2025Whole Effluent Toxicity [WET] - C. dubia, 7-day minimum39 %≥ 93 %58%
October 2025Whole Effluent Toxicity [WET] - C. dubia, monthly average minimum39 %≥ 93 %58%
October 2025Whole Effluent Toxicity [WET] - P. promelas, 7-day minimum39 %≥ 93 %58%
October 2025Whole Effluent Toxicity [WET] - P. promelas, monthly average minimum39 %≥ 93 %58%
November 2025BOD, carbonaceous [5 day, 20 C], monthly average15.8 mg/L≤ 10 mg/L58%
November 2025Chlorine, total residual, instantaneous maximum1.15 mg/L≤ .033 mg/L3385%
November 2025Coliform, fecal general, monthly geometric mean299 #/100mL≤ 200 #/100mL50%
November 2025Coliform, fecal general, weekly geometric mean1052 #/100mL≤ 400 #/100mL163%
November 2025Nitrogen, ammonia total [as N], monthly average101 lb/d≤ 13 lb/d677%
November 2025Nitrogen, ammonia total [as N], monthly average33.4 mg/L≤ 2 mg/L1570%
November 2025Nitrogen, ammonia total [as N], weekly average28.3 mg/L≤ 4 mg/L608%
November 2025Solids, total suspended, monthly average128 lb/d≤ 100 lb/d28%
November 2025Solids, total suspended, monthly average35 mg/L≤ 15 mg/L133%
November 2025Solids, total suspended, weekly average35.7 mg/L≤ 23 mg/L55%
November 2025Whole Effluent Toxicity [WET] - C. dubia, 7-day minimum69 %≥ 93 %26%
November 2025Whole Effluent Toxicity [WET] - C. dubia, monthly average minimum69 %≥ 93 %26%
November 2025Whole Effluent Toxicity [WET] - P. promelas, 7-day minimum69 %≥ 93 %26%
November 2025Whole Effluent Toxicity [WET] - P. promelas, monthly average minimum69 %≥ 93 %26%
December 2025BOD, carbonaceous [5 day, 20 C], monthly average16.3 mg/L≤ 10 mg/L63%
December 2025BOD, carbonaceous [5 day, 20 C], weekly average15.4 mg/L≤ 15 mg/L3%
December 2025Chlorine, total residual, instantaneous maximum.09 mg/L≤ .033 mg/L173%
December 2025Coliform, fecal general, monthly geometric mean418 #/100mL≤ 200 #/100mL109%
December 2025Coliform, fecal general, weekly geometric mean2004 #/100mL≤ 400 #/100mL401%
December 2025Copper, total [as Cu], monthly average.097 lb/d≤ .09 lb/d8%
December 2025Mercury, total [as Hg], daily maximum.018 lb/d≤ .0005 lb/d3500%
December 2025Mercury, total [as Hg], monthly average.018 lb/d≤ .0002 lb/d8900%
December 2025Nitrogen, ammonia total [as N], monthly average26.4 mg/L≤ 2 mg/L1220%
December 2025Nitrogen, ammonia total [as N], monthly average71.5 lb/d≤ 13 lb/d450%
December 2025Nitrogen, ammonia total [as N], weekly average24.7 mg/L≤ 4 mg/L518%
December 2025Solids, total suspended, monthly average31.4 mg/L≤ 15 mg/L109%
December 2025Solids, total suspended, weekly average31.3 mg/L≤ 23 mg/L36%
January 2026BOD, carbonaceous [5 day, 20 C], monthly average17.3 mg/L≤ 10 mg/L73%
January 2026BOD, carbonaceous [5 day, 20 C], weekly average17 mg/L≤ 15 mg/L13%
January 2026Chlorine, total residual, instantaneous maximum.07 mg/L≤ .033 mg/L112%
January 2026Coliform, fecal general, weekly geometric mean1024 #/100mL≤ 400 #/100mL156%
January 2026Nitrogen, ammonia total [as N], monthly average23 mg/L≤ 2 mg/L1050%
January 2026Nitrogen, ammonia total [as N], monthly average56.1 lb/d≤ 13 lb/d332%
January 2026Nitrogen, ammonia total [as N], weekly average19.5 mg/L≤ 4 mg/L388%
January 2026Solids, total suspended, monthly average32.2 mg/L≤ 15 mg/L115%
January 2026Solids, total suspended, weekly average31.8 mg/L≤ 23 mg/L38%
February 2026BOD, carbonaceous [5 day, 20 C], monthly average26.2 mg/L≤ 10 mg/L162%
February 2026BOD, carbonaceous [5 day, 20 C], monthly average86.4 lb/d≤ 67 lb/d29%
February 2026BOD, carbonaceous [5 day, 20 C], weekly average25.5 mg/L≤ 15 mg/L70%
February 2026Nitrogen, ammonia total [as N], monthly average154 lb/d≤ 13 lb/d1085%
February 2026Nitrogen, ammonia total [as N], monthly average45.3 mg/L≤ 2 mg/L2165%
February 2026Nitrogen, ammonia total [as N], weekly average45.5 mg/L≤ 4 mg/L1038%
February 2026Solids, total suspended, monthly average101 lb/d≤ 100 lb/d1%
February 2026Solids, total suspended, monthly average29.6 mg/L≤ 15 mg/L97%
February 2026Solids, total suspended, weekly average29.7 mg/L≤ 23 mg/L29%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average37.7 mg/L≤ 10 mg/L277%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average83.9 lb/d≤ 67 lb/d25%
March 2026BOD, carbonaceous [5 day, 20 C], weekly average38 mg/L≤ 15 mg/L153%
March 2026Coliform, fecal general, weekly geometric mean1714 #/100mL≤ 400 #/100mL329%
March 2026Copper, total [as Cu], monthly average.12 lb/d≤ .09 lb/d33%
March 2026Mercury, total [as Hg], daily maximum.052 lb/d≤ .0005 lb/d10300%
March 2026Mercury, total [as Hg], monthly average.052 lb/d≤ .0002 lb/d25900%
March 2026Nitrogen, ammonia total [as N], monthly average33.8 mg/L≤ 2 mg/L1590%
March 2026Nitrogen, ammonia total [as N], monthly average76.2 lb/d≤ 13 lb/d486%
March 2026Nitrogen, ammonia total [as N], weekly average34.5 mg/L≤ 4 mg/L763%
March 2026Solids, total suspended, monthly average38.5 mg/L≤ 15 mg/L157%
March 2026Solids, total suspended, weekly average37.1 mg/L≤ 23 mg/L61%
April 2026BOD, carbonaceous [5 day, 20 C], monthly average20.6 mg/L≤ 5 mg/L312%
April 2026BOD, carbonaceous [5 day, 20 C], monthly average56.2 lb/d≤ 33 lb/d70%
April 2026BOD, carbonaceous [5 day, 20 C], weekly average20.6 mg/L≤ 8 mg/L158%
April 2026Coliform, fecal general, weekly geometric mean28800 #/100mL≤ 400 #/100mL7100%
April 2026Nitrogen, ammonia total [as N], monthly average100 lb/d≤ 13 lb/d669%
April 2026Nitrogen, ammonia total [as N], monthly average35.9 mg/L≤ 2 mg/L1695%
April 2026Nitrogen, ammonia total [as N], weekly average36.8 mg/L≤ 4 mg/L820%
April 2026Solids, total suspended, monthly average30.6 mg/L≤ 15 mg/L104%
April 2026Solids, total suspended, weekly average30.5 mg/L≤ 23 mg/L33%
April 2026Whole Effluent Toxicity [WET] - C. dubia, 7-day minimum0 %≥ 93 %100%
April 2026Whole Effluent Toxicity [WET] - C. dubia, monthly average minimum0 %≥ 93 %100%
April 2026Whole Effluent Toxicity [WET] - P. promelas, 7-day minimum69 %≥ 93 %26%
April 2026Whole Effluent Toxicity [WET] - P. promelas, monthly average minimum69 %≥ 93 %26%
May 2026BOD, carbonaceous [5 day, 20 C], monthly average18.6 mg/L≤ 5 mg/L272%
May 2026BOD, carbonaceous [5 day, 20 C], monthly average61.4 lb/d≤ 33 lb/d86%
May 2026BOD, carbonaceous [5 day, 20 C], weekly average18 mg/L≤ 8 mg/L125%
May 2026Nitrogen, ammonia total [as N], monthly average19.5 mg/L≤ 2 mg/L875%
May 2026Nitrogen, ammonia total [as N], monthly average62.7 lb/d≤ 13 lb/d382%
May 2026Nitrogen, ammonia total [as N], weekly average18.4 mg/L≤ 4 mg/L360%
May 2026Solids, total suspended, monthly average27.3 mg/L≤ 15 mg/L82%
May 2026Solids, total suspended, weekly average28.8 mg/L≤ 23 mg/L25%
May 2026Whole Effluent Toxicity [WET] - C. dubia, 7-day minimum0 %≥ 93 %100%
May 2026Whole Effluent Toxicity [WET] - C. dubia, monthly average minimum0 %≥ 93 %100%
June 2026BOD, carbonaceous [5 day, 20 C], monthly average15 mg/L≤ 5 mg/L200%
June 2026BOD, carbonaceous [5 day, 20 C], monthly average51.5 lb/d≤ 33 lb/d56%
June 2026BOD, carbonaceous [5 day, 20 C], weekly average12.3 mg/L≤ 8 mg/L54%
June 2026Chlorine, total residual, instantaneous maximum.27 mg/L≤ .033 mg/L718%
June 2026Coliform, fecal general, monthly geometric mean560 #/100mL≤ 200 #/100mL180%
June 2026Coliform, fecal general, weekly geometric mean1953 #/100mL≤ 400 #/100mL388%
June 2026Nitrogen, ammonia total [as N], monthly average14.2 mg/L≤ 2 mg/L610%
June 2026Nitrogen, ammonia total [as N], monthly average49.8 lb/d≤ 13 lb/d283%
June 2026Nitrogen, ammonia total [as N], weekly average11.9 mg/L≤ 4 mg/L198%
June 2026Solids, total suspended, monthly average27.7 mg/L≤ 15 mg/L85%
June 2026Solids, total suspended, weekly average23.6 mg/L≤ 23 mg/L3%
July 2026BOD, carbonaceous [5 day, 20 C], monthly average11.6 mg/L≤ 5 mg/L132%
July 2026BOD, carbonaceous [5 day, 20 C], monthly average49 lb/d≤ 33 lb/d48%
July 2026BOD, carbonaceous [5 day, 20 C], weekly average11.8 mg/L≤ 8 mg/L48%
July 2026Coliform, fecal general, monthly geometric mean283 #/100mL≤ 200 #/100mL42%
July 2026Coliform, fecal general, weekly geometric mean986 #/100mL≤ 400 #/100mL147%
July 2026Nitrogen, ammonia total [as N], monthly average14.5 mg/L≤ 2 mg/L625%
July 2026Nitrogen, ammonia total [as N], monthly average58.6 lb/d≤ 13 lb/d351%
July 2026Nitrogen, ammonia total [as N], weekly average14.2 mg/L≤ 4 mg/L255%
July 2026Solids, total suspended, monthly average19.2 mg/L≤ 15 mg/L28%
July 2026Whole Effluent Toxicity [WET] - P. promelas, 7-day minimum39 %≥ 93 %58%
July 2026Whole Effluent Toxicity [WET] - P. promelas, monthly average minimum39 %≥ 93 %58%
August 2026BOD, carbonaceous [5 day, 20 C], monthly average10.1 mg/L≤ 5 mg/L102%
August 2026BOD, carbonaceous [5 day, 20 C], weekly average10.7 mg/L≤ 8 mg/L34%
August 2026Coliform, fecal general, monthly geometric mean219 #/100mL≤ 200 #/100mL10%
August 2026Coliform, fecal general, weekly geometric mean1006 #/100mL≤ 400 #/100mL152%
August 2026Nitrogen, ammonia total [as N], monthly average17.3 mg/L≤ 2 mg/L765%
August 2026Nitrogen, ammonia total [as N], monthly average42.5 lb/d≤ 13 lb/d227%
August 2026Nitrogen, ammonia total [as N], weekly average17.2 mg/L≤ 4 mg/L330%
August 2026Solids, total suspended, monthly average19.8 mg/L≤ 15 mg/L32%
August 2026Whole Effluent Toxicity [WET] - P. promelas, 7-day minimum69 %≥ 93 %26%
August 2026Whole Effluent Toxicity [WET] - P. promelas, monthly average minimum69 %≥ 93 %26%

Limits in force (60)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly average minimum≥ 5 mg/Lall year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 8.5 SUall year
Solids, total suspendedmonthly average≤ 15 mg/Lall year
Solids, total suspendedweekly average≤ 23 mg/Lall year
Solids, total suspendedmonthly average≤ 100 lb/dall year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]weekly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (lb/d)all year
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/Lall year
Nitrogen, ammonia total [as N]weekly average≤ 4 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 13 lb/dall year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]weekly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
Copper, total [as Cu]monthly averagereport only (mg/L)all year
Copper, total [as Cu]daily maximumreport only (mg/L)all year
Copper, total [as Cu]monthly average≤ .09 lb/dall year
Copper, total [as Cu]daily maximum≤ .22 lb/dall year
Silver, total [as Ag]monthly averagereport only (mg/L)all year
Silver, total [as Ag]daily maximumreport only (mg/L)all year
Silver, total [as Ag]monthly average≤ 2.2 lb/dall year
Silver, total [as Ag]daily maximum≤ 4.4 lb/dall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantweekly averagereport only (MGD)all year
Chlorine, total residualinstantaneous maximum≤ .033 mg/Lall year
Whole Effluent Toxicity [WET] - C. dubia7-day minimum≥ 93 %all year
Whole Effluent Toxicity [WET] - C. dubiamonthly average minimum≥ 93 %all year
Whole Effluent Toxicity [WET] - P. promelas7-day minimum≥ 93 %all year
Whole Effluent Toxicity [WET] - P. promelasmonthly average minimum≥ 93 %all year
Mercury, total [as Hg]monthly averagereport only (mg/L)all year
Mercury, total [as Hg]daily maximumreport only (mg/L)all year
Mercury, total [as Hg]monthly average≤ .0002 lb/dall year
Mercury, total [as Hg]daily maximum≤ .0005 lb/dall year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal generalweekly geometric mean≤ 400 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LJan, Feb, Mar, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 5 mg/LApr–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/LJan, Feb, Mar, Nov, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 8 mg/LApr–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 67 lb/dJan, Feb, Mar, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 33 lb/dApr–Oct
Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (pass=0;fail=1)all year
Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (pass=0;fail=1)all year
Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7-day minimumreport only (pass=0;fail=1)all year
Pass/Fail Static Renewal 7Day Chronic Pimephales promelasmonthly average minimumreport only (pass=0;fail=1)all year
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (pass=0;fail=1)all year
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (pass=0;fail=1)all year
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (pass=0;fail=1)all year
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (pass=0;fail=1)all year
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all year
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all year
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all year
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (%)all year
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all year
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly average minimumreport only (%)all year
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all year
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasmonthly average minimumreport only (%)all year
Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubiamaximumreport only (%)all year
Coef Of Var Static Renewal 7Day Chronic Pimephales promelasmaximumreport only (%)all year

How strict are these limits?

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/LA0033227 · MCP: https://passage-data.com/mcp