Passage Data · Check a report · Use it from your AI

Helmsburg Regional Sewer District

Sewage treatment plant, Helmsburg, Indiana. NPDES permit IN0058416, in force until Oct 31, 2030. Last 12 months: over a limit 17 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (23 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
8 values over a limit, 3 required values missing, 3 of 12 reports late

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

All 17 values over a limit
Period endingParameterReportedLimitOver by
November 2025Nitrogen, ammonia total [as N], monthly average.4 lb/d≤ .27 lb/d48%
November 2025Nitrogen, ammonia total [as N], monthly average14 mg/L≤ 1.3 mg/L977%
November 2025Nitrogen, ammonia total [as N], maximum weekly average.8 lb/d≤ .4 lb/d100%
November 2025Nitrogen, ammonia total [as N], maximum weekly average31 mg/L≤ 1.9 mg/L1532%
November 2025Solids, total suspended, monthly average27 mg/L≤ 18 mg/L50%
November 2025Solids, total suspended, maximum weekly average45 mg/L≤ 27 mg/L67%
December 2025Nitrogen, ammonia total [as N], monthly average13 mg/L≤ 1.9 mg/L584%
December 2025Nitrogen, ammonia total [as N], maximum weekly average1.2 lb/d≤ .61 lb/d97%
December 2025Nitrogen, ammonia total [as N], maximum weekly average36 mg/L≤ 2.9 mg/L1141%
February 2026Nitrogen, ammonia total [as N], monthly average2.3 mg/L≤ 1.9 mg/L21%
February 2026Nitrogen, ammonia total [as N], maximum weekly average.8 lb/d≤ .61 lb/d31%
February 2026Nitrogen, ammonia total [as N], maximum weekly average9 mg/L≤ 2.9 mg/L210%
May 2026E. coli, colony forming units [CFU], daily maximum792 CFU/100mL≤ 235 CFU/100mL237%
May 2026Nitrogen, ammonia total [as N], maximum weekly average3 mg/L≤ 1.9 mg/L58%
June 2026E. coli, colony forming units [CFU], daily maximum816 CFU/100mL≤ 235 CFU/100mL247%
June 2026Nitrogen, ammonia total [as N], maximum weekly average3.8 mg/L≤ 1.9 mg/L100%
July 2026E. coli, colony forming units [CFU], daily maximum285 CFU/100mL≤ 235 CFU/100mL21%

Limits in force (36)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily average minimum≥ 6 mg/LMay–Nov
Oxygen, dissolved [DO]daily average minimum≥ 5 mg/LJan, Feb, Mar, Apr, Dec
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Dec
Solids, total suspendedmonthly average≤ 18 mg/LMay–Nov
Solids, total suspendedmaximum weekly average≤ 45 mg/LJan, Feb, Mar, Apr, Dec
Solids, total suspendedmaximum weekly average≤ 27 mg/LMay–Nov
Solids, total suspendedmonthly average≤ 6.3 lb/dJan, Feb, Mar, Apr, Dec
Solids, total suspendedmonthly average≤ 3.8 lb/dMay–Nov
Solids, total suspendedmaximum weekly average≤ 9.4 lb/dJan, Feb, Mar, Apr, Dec
Solids, total suspendedmaximum weekly average≤ 5.6 lb/dMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 1.3 mg/LMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 1.9 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 1.9 mg/LMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 2.9 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]monthly average≤ .27 lb/dMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ .4 lb/dJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ .4 lb/dMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ .61 lb/dJan, Feb, Mar, Apr, Dec
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Chlorine, total residualmonthly average< .06 mg/LApr–Oct
Chlorine, total residualdaily maximum< .06 mg/LApr–Oct
Chlorine, total residualdaily minimum≥ .5 mg/LApr–Oct
Chlorine, total residualdaily maximumreport only (mg/L)Apr–Oct
E. coli, colony forming units [CFU]monthly geometric mean≤ 125 CFU/100mLApr–Oct
E. coli, colony forming units [CFU]daily maximum≤ 235 CFU/100mLApr–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/LMay–Nov
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 40 mg/LJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 23 mg/LMay–Nov
BOD, carbonaceous [5 day, 20 C]monthly average≤ 5.2 lb/dJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 3.1 lb/dMay–Nov
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 8.3 lb/dJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 4.8 lb/dMay–Nov
Flow, totalmonthly totalreport only (Mgal/mo)all year

New limits from Oct 1, 2030

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Nitrogen, ammonia total [as N], monthly average0.14 lb/d (May–Nov)tighter0.0175 lb/d (6 values)0.125×
Nitrogen, ammonia total [as N], monthly average1.1 mg/L (May–Nov)tighter0.1 mg/L (6 values)0.0909×
Nitrogen, ammonia total [as N], monthly average1.6 mg/L (Jan, Feb, Mar, Apr, Dec)tighter0.1 mg/L (5 values)0.0625×
Nitrogen, ammonia total [as N], monthly average0.2 lb/d (Jan, Feb, Mar, Apr, Dec)tighter0.005 lb/d (5 values)0.025×
Nitrogen, ammonia total [as N], weekly average0.2 lb/d (May–Nov)tighter——
Nitrogen, ammonia total [as N], weekly average0.3 lb/d (Jan, Feb, Mar, Apr, Dec)tighter——

How strict are these limits?

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

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

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IN0058416 · MCP: https://passage-data.com/mcp