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Exploratorium, The

Noncommercial Research Organizations, San Francisco, California. NPDES permit CA0030198 expired Mar 31, 2026; its limits still apply. Last 12 months: no values over a limit, 11 of 38 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 62 days after each period: outfall 001 form A quarterly (1 value), outfall 002 form A quarterly (2 values), outfall INF1 form A quarterly (3 values), outfall INF2 form A quarterly (3 values), outfall INF3 form A quarterly (2 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 60 reports late

Limits in force (11)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitinstantaneous maximumreport only (deg F)all year001
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year002
Flow, totaltotalreport only (Mgal)all year002
Temperature, water deg. fahrenheitinstantaneous maximumreport only (deg F)all yearINF1
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all yearINF1
Flow, totaltotalreport only (Mgal)all yearINF1
Temperature, water deg. fahrenheitinstantaneous maximumreport only (deg F)all yearINF2
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all yearINF2
Flow, totaltotalreport only (Mgal)all yearINF2
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all yearINF3
Flow, totaltotalreport only (Mgal)all yearINF3

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/CA0030198 · MCP: https://passage-data.com/mcp