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Lonoke County Property Owners' Multipurpose Improvement District No. 12

Subdividers And Developers, Scott, Arkansas. NPDES permit AR0050831, in force until Nov 30, 2030. Last 12 months: over a limit 9 times (last May 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form A monthly (21 values), form Y yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
3 values over a limit, 3 required values missing, 1 of 13 reports late

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

Period endingParameterReportedLimitOver by
October 2025Chlorine, total residual, instantaneous maximum1.08 mg/L≤ .011 mg/L9718%
December 2025Chlorine, total residual, instantaneous maximum1.63 mg/L≤ .011 mg/L14718%
January 2026Chlorine, total residual, instantaneous maximum8.8 mg/L≤ .011 mg/L79900%
April 2026Nitrogen, ammonia total [as N], 7-day average30.7 mg/L≤ 5.2 mg/L490%
April 2026Nitrogen, ammonia total [as N], monthly average26.6 mg/L≤ 5.2 mg/L412%
April 2026Oxygen, dissolved [DO], instantaneous minimum2.79 mg/L≥ 5 mg/L44%
April 2026Solids, total suspended, 7-day average41.7 mg/L≤ 22.5 mg/L85%
April 2026Solids, total suspended, monthly average23.3 mg/L≤ 15 mg/L55%
May 2026Nitrogen, ammonia total [as N], monthly average6.4 mg/L≤ 5 mg/L28%

Limits in force (32)

ParameterStatisticLimitMonths
Flow ratemonthly averagereport only (%)all year
Flow rate7-day averagereport only (%)all year
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/Lall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 15 mg/Lall year
Solids, total suspended7-day average≤ 22.5 mg/Lall year
Solids, total suspendedmonthly average≤ 3.6 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 5.2 mg/LApr
Nitrogen, ammonia total [as N]monthly average≤ 5 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 8 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]7-day average≤ 5.2 mg/LApr
Nitrogen, ammonia total [as N]7-day average≤ 7.5 mg/LMay–Oct
Nitrogen, ammonia total [as N]7-day average≤ 12 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 1.2 lb/dApr
Nitrogen, ammonia total [as N]monthly average≤ 1.2 lb/dMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 1.9 lb/dJan, Feb, Mar, Nov, Dec
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]7-day averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualinstantaneous maximum≤ .011 mg/Lall year
Coliform, fecal general30-day geometric mean≤ 200 #/100mLMay–Sep
Coliform, fecal general30-day geometric mean≤ 1000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
Coliform, fecal general7-day geometric mean≤ 400 #/100mLMay–Sep
Coliform, fecal general7-day geometric mean≤ 2000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
Overflowsmonthly totalreport only (occur/mo)all year
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (gal)all year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 15 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 2.4 lb/dall year

How strict are these limits?

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

Same industry: the 50 Real Estate permits in Arkansas.

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Your permit document is the final word. As JSON: /api/v1/permits/AR0050831 · MCP: https://passage-data.com/mcp