Weirlog is compliance field-ops for contract water and wastewater operators. Readings taken at the lagoon become a computed DMR at the desk — with the policy it applied written beside every number, and a person, never the software, signing.
Position against the limit — never a grade. Illustrative values.
Every reading is appended, never overwritten — corrections supersede with a reason, and both rows stay forever. Field entry works offline at the lagoon and syncs when signal returns, so the record is what actually happened, in the order it happened.
Limits, seasons, monitoring locations, non-detect rules, and averaging windows load from the permit itself. The DMR computes from the ledger against that configuration — and every value carries the policy it was computed under, so it can be explained a year later.
When a reading crosses a watch level you set, Weirlog attaches your own procedure — an exact-match lookup, never generated — and a named person reviews and releases it. Hold-time clocks, operator certifications, and visit records follow the same rule: computed, attributed, honest.
Weirlog computes, produces, and stages — it never files, never signs, and never holds your state credentials. Submission happens in NetDMR, by a certified human, under their own login. The software also never renders a verdict: it shows every number's position against your permit and leaves the compliance judgment where it belongs — with your certified operator.
Weirlog is built for the firm that runs other people's systems — municipal lagoons, utility districts, campgrounds, industrial parks. Multi-client from the first screen: each client's sites, systems, permits, and records stay under one roof, and a new client is a form fill, not a software project. Wastewater and NPDES first; drinking water is on the roadmap.
For Indiana operators, the timing is deliberate: every non-IURC water utility now carries a quadrennial asset-management reporting obligation (HEA 1459), and the operators who keep defensible, continuous records will be the ones their clients lean on. Weirlog is built against 327 IAC and 40 CFR Part 136 record-keeping discipline from the first table.
Weirlog is in pilot with working operators now. If you run systems under NPDES permits and want your field records, DMRs, and procedures in one defensible place, we'll set your first system up with you — permit, parameters, and watch levels — and walk your first month end to end.
Talk to us about a pilotnick.hochstedler@hossautomation.com