For water and wastewater utilities
Calibration software for water and wastewater plants
At a treatment plant, the flow meter on the outfall, the chlorine analyzer on the clearwell and the balance in the lab all produce numbers that end up on a permit report or a compliance result. NPDES permittees keep calibration and maintenance records for at least three years. Drinking water rules set short checks for online analyzers. Certified labs follow the calibration schedules in EPA's lab certification manual. Axiospec keeps plant and lab equipment in one list, by site, with each item on its own interval and a record an inspector can follow.
Standards that apply in Water and Wastewater Utilities
Calibration challenges in Water and Wastewater Utilities
Short checks on online analyzers
Continuous chlorine residual analyzers need a grab-sample calibration check at least every five days unless the State approves another protocol (40 CFR 141.74). Individual filter turbidimeters are calibrated to the maker's procedure (40 CFR 141.174). A missed check rarely shows up until someone reads the log.
Flow meters that drift
EPA's NPDES inspection manual expects flow measurement systems to be calibrated by a qualified source at least once a year, with the secondary device reading within 10 percent of the primary device. Inspectors treat a missing program as unacceptable.
Three years of records, strip charts included
NPDES permittees keep all calibration and maintenance records, and the original strip charts from continuous monitors, for at least three years (40 CFR 122.41(j)). Logbooks spread across the plant and the lab are hard to produce on request.
Lab equipment on many schedules
EPA's drinking water lab certification manual sets schedules item by item. Chemistry balances are calibrated at least once a year and checked each day they are used. Microbiology balances are calibrated monthly. pH meters are standardized before each use period.
Field meters that move between crews
EPA expects each field meter's make, model and ID to be logged with its calibrations. Meters move between crews and sites, so the history ends up split across notebooks.
How Axiospec helps Water and Wastewater Utilities teams
Plant and lab in one list, by site
Keep online analyzers, flow meters, field meters and lab equipment in one list, grouped by plant, lift station or lab, with a rollup across every site.
Intervals from a few days to a few years
Set each item's interval in days, months or years. The Due Calendar shows what is due, due soon and overdue, with reminders, so a five-day analyzer check and a yearly flow meter calibration are both in view.
Status where the equipment is
Print a QR label for each instrument. Your team scans it to open the instrument's record. Technicians log a check from the native iOS and Android apps without going back to a desk.
Records kept and ready to export
Each calibration keeps its readings, result, certificate and the person who made it, on a tamper-evident audit trail. Export the records when a state inspector or permit writer asks for them.
Traceable references
Record the reference standard behind each calibration, such as a reference thermometer or certified weights. If one turns out to be off, trace it to every calibration it stood behind.
An easy start, free for small programs
Import your equipment list from Excel or CSV, or send us what you have in any format and we load it for you at no cost, usually within a couple of business days. The Free plan covers up to 50 active instruments with unlimited users.
Water and Wastewater Utilities calibration software: common questions
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Does Axiospec make us compliant with our NPDES permit or the Safe Drinking Water Act?
No software can. Axiospec keeps the calibration records those rules ask for, such as the calibration and maintenance records 40 CFR 122.41(j) asks permittees to keep for three years. Compliance is decided by your permit authority and your state program.
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Can it handle a check every few days next to yearly calibrations?
Yes. Each instrument has its own interval in days, months or years, so a chlorine analyzer checked every five days and a flow meter calibrated once a year sit in the same list, each with its own due date and reminders.
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Does it work for a certified drinking water or wastewater lab?
Yes. Balances, thermometers, pH meters and other support equipment each get their own schedule, readings and reference standard. The records support labs working to TNI or ISO/IEC 17025. Accreditation is decided by your accreditation body.
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Is there a free way to try Axiospec?
Yes. The live demo opens a working calibration record with no signup and no credit card. A new workspace takes no card and runs on Professional for its first 45 days, so you can load your own equipment, and the Free plan then covers up to 50 active instruments with unlimited users and no per-seat fee.
Axiospec is a documentation and workflow tool. It helps Water and Wastewater Utilities teams produce clean, traceable, audit-ready calibration records; certification and conformance depend on your own processes, scope, and assessor.
Audit-ready from day one
Each instrument gets a tamper-evident calibration record.
Got a gage list? Send it over and we load it for you, usually in a couple of business days. Free on every plan.
Free plan, no credit card · Unlimited users · Nothing to install