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Oasis Splash Pad

Amusement And Recreation, Michigan City, Indiana. NPDES permit IN0064924, in force until Jun 30, 2028. Last 12 months: over a limit 2 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due: About 28 days after each period: form A monthly (8 values)
Renewal application due: Jan 2, 2028 · 180 days before expiry; your permit may set another date
Last report on file: September 2026
Oct 2024 – Sep 2025: 0 values over a limit, 1 required value missing, 1 of 12 reports late

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

Period ending	Parameter	Reported	Limit	Over by
June 2026	Chlorine, total residual, daily maximum	.59 mg/L	< .06 mg/L	883%
June 2026	Chlorine, total residual, monthly average	.45 mg/L	< .06 mg/L	650%

Limits in force (8)

Parameter	Statistic	Limit	Months
pH	daily minimum	≥ 6 SU	all year
pH	daily maximum	≤ 9 SU	all year
Solids, total suspended	daily maximum	≤ 30 mg/L	all year
Oil and grease, hexane extr method	daily maximum	report only (mg/L)	all year
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year
Chlorine, total residual	monthly average	< .06 mg/L	all year
Chlorine, total residual	daily maximum	< .06 mg/L	all year
Flow, total	monthly total	report only (Mgal/mo)	all year

How strict are these limits?

Solids, total suspended, daily maximum 30 mg/L — stricter than 84% of 259 other minor industrial and other permits in Indiana; 10% have the same limit

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

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

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IN0064924 · MCP: https://passage-data.com/mcp