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Dawson Wastewater Treatment Facility

Sewage treatment plant, Dawson, Nebraska. NPDES permit NE0023914, in force until Jun 30, 2029. Last 12 months: over a limit 10 times (last February 2026), 3 of 13 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 59 days after each period: outfall 001 form M quarterly (26 values), outfall INF form A yearly
Last report on file
September 2026
Oct 2024 – Sep 2025
11 values over a limit, 1 required value missing, 2 of 13 reports late

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

Period endingParameterReportedLimitOver by
October 2025BOD, 5-day, 20 deg. C, monthly average33.6 mg/L≤ 30 mg/L12%
October 2025Nitrogen, ammonia total [as N], daily maximum3.53 kg/d≤ 1.3 kg/d172%
October 2025Nitrogen, ammonia total [as N], daily maximum7.98 mg/L≤ 2.4 mg/L233%
October 2025Nitrogen, ammonia total [as N], monthly average2.06 kg/d≤ .68 kg/d203%
October 2025Nitrogen, ammonia total [as N], monthly average4.65 mg/L≤ 1.2 mg/L288%
October 2025Solids, total suspended, daily maximum933 mg/L≤ 120 mg/L678%
October 2025Solids, total suspended, monthly average502 mg/L≤ 80 mg/L528%
February 2026BOD, 5-day, 20 deg. C, monthly average42.15 mg/L≤ 30 mg/L41%
February 2026Nitrogen, ammonia total [as N], monthly average.57 kg/d≤ .34 kg/d68%
February 2026Nitrogen, ammonia total [as N], monthly average1.89 mg/L≤ 1.32 mg/L43%

Limits in force (41)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. C7-day average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (kg/d)all year001
BOD, 5-day, 20 deg. C7-day averagereport only (kg/d)all year001
pHdaily minimum≥ 6.5 SUall year001
pHdaily maximumreport only (SU)all year001
Solids, total suspendedmonthly average≤ 80 mg/Lall year001
Solids, total suspendeddaily maximum≤ 120 mg/Lall year001
Solids, total suspendedmonthly averagereport only (kg/d)all year001
Solids, total suspendeddaily maximumreport only (kg/d)all year001
Nitrogen, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly average≤ 1.32 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ .65 mg/LMar–May001
Nitrogen, ammonia total [as N]monthly average≤ 1.2 mg/LJun–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 2.65 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 1.3 mg/LMar–May001
Nitrogen, ammonia total [as N]daily maximum≤ 2.4 mg/LJun–Oct001
Nitrogen, ammonia total [as N]monthly average≤ .34 kg/dJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ .147 kg/dMar–May001
Nitrogen, ammonia total [as N]monthly average≤ .68 kg/dJun–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ .68 kg/dJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ .3 kg/dMar–May001
Nitrogen, ammonia total [as N]daily maximum≤ 1.3 kg/dJun–Oct001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
E. coli, MTEC-MFmonthly geometric mean≤ 126 #/100mLMay–Sep001
E. coli, MTEC-MFmonthly geometric meanreport only (#/100mL)Jan, Feb, Mar, Apr, Oct, Nov, Dec001
E. coli, MTEC-MFdaily maximum≤ 298 #/100mLMay–Sep001
E. coli, MTEC-MFdaily maximumreport only (#/100mL)Jan, Feb, Mar, Apr, Oct, Nov, Dec001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Duration of dischargevaluereport only (d)all year001
Flow, totalvaluereport only (Mgal/mo)all year001
BOD, 5-day, 20 deg. Cvaluereport only (mg/L)all yearINF
pHvaluereport only (SU)all yearINF
Solids, total suspendedvaluereport only (mg/L)all yearINF
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearINF
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearINF

New limits from Jan 1, 2029

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Nitrogen, ammonia total [as N], daily maximum1.49 mg/L (Jan, Feb, Nov, Dec)tighter——
Nitrogen, ammonia total [as N], daily maximum0.42 mg/L (Mar, Apr, May, Dec)tighter——
Nitrogen, ammonia total [as N], daily maximum0.08 kg/d (Mar, Apr, May, Dec)tighter——
Nitrogen, ammonia total [as N], daily maximum0.91 mg/L (Mar, Jun, Jul, Aug, Sep, Oct)tighter——
Nitrogen, ammonia total [as N], daily maximum0.31 kg/d (Mar, Jun, Jul, Aug, Sep, Oct)tighter——
Nitrogen, ammonia total [as N], monthly average0.74 mg/L (Jan, Feb, Nov, Dec)tighter——
Nitrogen, ammonia total [as N], monthly average0.21 mg/L (Mar, Apr, May, Dec)tighter——
Nitrogen, ammonia total [as N], monthly average0.04 kg/d (Mar, Apr, May, Dec)tighter——
Nitrogen, ammonia total [as N], monthly average0.16 kg/d (Mar, Jun, Jul, Aug, Sep, Oct)tighter——
Nitrogen, ammonia total [as N], monthly average0.46 mg/L (Mar, Jun, Jul, Aug, Sep, Oct)tighter——

How strict are these limits?

Cited limits by parameter: Nebraska'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/NE0023914 · MCP: https://passage-data.com/mcp