Check your discharge report before you file it

Type your NPDES permit number. You get the limits EPA holds for it, EPA's record of your last twelve months, and — once you type this month's numbers — exactly what EPA will record as a violation and which required values are missing. Free. What you type never leaves this page.

Several permits? See them all on one board.

What did you come to do?

Fill it from your file

The plant's daily log, the state's supplemental form or monthly operating report as you keep it (days down or across, a sheet per month or per week, several outfalls), or a laboratory's results. Each value is computed over the monitoring period and names the cells it came from; every cell not used is listed with the reason. Change any value before you check.

Before you file: where your file carries your own statistics (a state export such as Washington's PARIS), or a box already holds your number, or you type over the page's, your number is held against the rule, and a number that departs says how: a weekly average that is the month's, a < dropped, a result below detection counted another way.

What leaves this page: a CSV or an Excel workbook (.xlsx, .xlsm) is read here and never sent. An older Excel file (.xls) or a PDF is sent once to Passage Data's reader, which returns its rows and keeps nothing and learns nothing from it. What you type is never sent.

This period's values due as a spreadsheet for the month's results: a Status formula on each row, the totals, the due date, and any number already typed here. Made in this page; nothing is sent.

The next 12 months for Google, Outlook or Apple Calendar: each form due, each sampling frequency in EPA's file, the renewal application and the expiry. A form sits on its due day only where this permit's own filings show it; otherwise on the period's end.

The NetDMR import file follows EPA's published import format; it has not yet been validated against NetDMR's own import check. Read it before you upload it.

Watch this permit — $79 a month

Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

Sign-ups are not open yet. We counted that someone asked — not who, and not which permit — and we open them once enough people do. The check above stays free.