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Callaway County Sewer District

Mobile Home Site Operators, Fulton, Missouri. NPDES permit MO0049590 expired Mar 31, 2025; its limits still apply. Last 12 months: over a limit 6 times (last March 2026), 12 required values missing, 1 of 3 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due: About 28 days after each period: form Q quarterly (12 values)
Last report on file: March 2026
Oct 2024 – Sep 2025: 14 values over a limit, 0 required values missing, 0 of 4 reports late

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

Period ending	Parameter	Reported	Limit	Over by
December 2025	E. coli, 30-day geometric mean	476000	≤ 206 #/100mL	—
December 2025	E. coli, daily maximum	476000	≤ 1030 #/100mL	46114%
December 2025	Nitrogen, ammonia total [as N], daily maximum	36.9	≤ 7.5 mg/L	392%
December 2025	Nitrogen, ammonia total [as N], monthly average	36.9	≤ 2.9 mg/L	1172%
March 2026	Nitrogen, ammonia total [as N], daily maximum	33.8	≤ 7.5 mg/L	351%
March 2026	Nitrogen, ammonia total [as N], monthly average	33.8	≤ 2.9 mg/L	1066%

Limits in force (14)

Parameter	Statistic	Limit	Months
BOD, 5-day, 20 deg. C	weekly average	≤ 65 mg/L	all year
BOD, 5-day, 20 deg. C	monthly average	≤ 45 mg/L	all year
pH	minimum	≥ 6.5 SU	all year
pH	maximum	≤ 9 SU	all year
Solids, total suspended	weekly average	≤ 120 mg/L	all year
Solids, total suspended	monthly average	≤ 80 mg/L	all year
Nitrogen, ammonia total [as N]	daily maximum	≤ 3.6 mg/L	Apr–Sep
Nitrogen, ammonia total [as N]	daily maximum	≤ 7.5 mg/L	Jan, Feb, Mar, Oct, Nov, Dec
Nitrogen, ammonia total [as N]	monthly average	≤ 1.4 mg/L	Apr–Sep
Nitrogen, ammonia total [as N]	monthly average	≤ 2.9 mg/L	Jan, Feb, Mar, Oct, Nov, Dec
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year
E. coli	daily maximum	≤ 1030 #/100mL	Apr–Dec
E. coli	30-day geometric mean	≤ 206 #/100mL	Apr–Dec

How strict are these limits?

Nitrogen, ammonia total [as N], daily maximum 3.6 mg/L — stricter than 80% of 758 other minor industrial and other permits in Missouri; 15% have the same limit
Nitrogen, ammonia total [as N], monthly average 1.4 mg/L — stricter than 41% of 753 other minor industrial and other permits in Missouri; 17% have the same limit
pH, minimum at least 6.5 SU — stricter than 16% of 973 other minor industrial and other permits in Missouri; 84% have the same limit

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

Same industry: the 188 Real Estate permits in Missouri.

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Your permit document is the final word. As JSON: /api/v1/permits/MO0049590 · MCP: https://passage-data.com/mcp