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Fox Valley Park District

Amusement And Recreation, Aurora, Illinois. NPDES permit IL0072338, in force until Mar 31, 2029. Last 12 months: over a limit once (last May 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due: About 25 days after each period: form 0 monthly (6 values)
Last report on file: September 2026
Oct 2024 – Sep 2025: 5 values over a limit, 0 required values missing, 0 of 12 reports late

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

Period ending	Parameter	Reported	Limit	Over by
May 2026	Chlorine, total residual, daily maximum	.12 mg/L	≤ .05 mg/L	140%

Limits in force (6)

Parameter	Statistic	Limit	Months
pH	monthly minimum	≥ 6.5 SU	all year
pH	monthly maximum	≤ 9 SU	all year
Solids, total suspended	30-day average	≤ 15 mg/L	all year
Solids, total suspended	daily maximum	≤ 30 mg/L	all year
Flow, in conduit or thru treatment plant	monthly maximum	report only (MGD)	all year
Chlorine, total residual	daily maximum	≤ .05 mg/L	all year

How strict are these limits?

pH, monthly minimum at least 6.5 SU — stricter than 38% of 286 other minor industrial and other permits in Illinois; 61% have the same limit
Solids, total suspended, 30-day average 15 mg/L — stricter than 37% of 259 other minor industrial and other permits in Illinois; 48% have the same limit
Solids, total suspended, daily maximum 30 mg/L — stricter than 20% of 508 other minor industrial and other permits in Illinois; 24% have the same limit

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

Same industry: the 15 Amusement and Recreation Services permits in Illinois.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IL0072338 · MCP: https://passage-data.com/mcp