See the exceedance before it reaches the outfall report.
Weirledger turns laboratory reports and monitoring data into a live compliance ledger for industrial wastewater. It reads the lab certificate, checks every result against your discharge permit, and forecasts which parameters are drifting toward a breach.
LR-1184 extracted from a 3-page lab certificate · 1 exceedance · COD trending to limit in ~2 samples
01
Read
Lab certificates to structured results
02
Check
Every value against its permit limit
03
Predict
Drift toward exceedance, per parameter
04
Report
Audit-ready summaries from confirmed data
The problem
Discharge compliance still runs on PDFs, spreadsheets and memory.
An industrial site can receive dozens of lab certificates a month, each from a different lab, format and unit convention. Results are retyped, compared to permit limits by hand, and only reviewed in aggregate when the monthly report is due — usually after the breach has already happened.
Late detection
Exceedances found weeks after sampling
Transcription errors
One mistyped value changes a report
No early warning
Trends hidden across separate files
Audit risk
Weak link between result and source
Day 1
Sample collected at the outfall
Composite sample sent to an external laboratory.
Day 6
Lab certificate arrives by email
A scanned PDF with a results table and handwritten corrections.
Day 9
Someone retypes it
Values copied into a spreadsheet; units converted manually.
Day 28
Monthly report preparation
BOD exceedance from Day 1 is spotted for the first time.
Day 30
Report filed, breach explained
Corrective action is now retrospective — and the trend was visible on Day 6.
With Weirledger
Day 6: certificate extracted, BOD flagged against the permit, reviewer notified, trend forecast updated.
The platform
One ledger from lab certificate to signed-off report.
01
Lab report extraction
Upload laboratory certificates as PDFs or scans. Weirledger reads sample IDs, sampling dates, outfalls, parameters, units and results into structured records, with a confidence score on every value.
No more retyping certificates into spreadsheets.
02
Permit limit engine
Enter the limits from each discharge permit once — per outfall, per parameter, with ranges such as pH 6–9. Every result is checked against the right limit automatically.
Exceedances are visible the day the result arrives.
03
Exceedance prediction
Models trained on your historical discharge records forecast where each parameter is heading, so rising BOD, COD or metals show up before they cross a limit.
Time to adjust treatment instead of explaining a breach.
04
Human review queue
Low-confidence values and exceedances go to a named reviewer beside the source page. Results are confirmed or returned to the lab — nothing is filed without a person signing off.
An audit trail for every number you report.
05
Risk assessments and recommendations
Each facility gets a pollution risk view by outfall and parameter, with plain-language suggestions tied to the data — for example, linking a COD spike to a cleaning cycle.
Operators know where to look first.
06
Compliance reporting
Draft monthly and quarterly discharge summaries from confirmed results only: sampling events, exceedances, trends and corrective actions, ready for sign-off and export.
Reporting days become reporting hours.
How it works
Four steps, every time a result comes in.
1
Submit
Upload a lab report or enter field readings for an outfall.
2
Extract and check
Values are extracted, units normalised and compared with permit limits.
3
Review
A reviewer confirms flagged or low-confidence values against the source page.
4
Act and report
Alerts, forecasts and compliance summaries update from confirmed data.
Interactive preview
Try the discharge workspace.
Open a lab report, confirm or return results, switch facilities, view the BOD trend and draft a report. Fictional sample data; the platform itself is in development.
app.weirledger.site / northwind-industries / dischargeSAMPLE DATA
Lab reports
8
Awaiting review
3
Reports with exceedances
3
Confirmed
4
Report
Facility / outfall
Exceedances
Sampled
Status
LR-1184
Coastline Analytical Labs
Ikeja Beverage Plant
OF-01 Final effluent
BOD5
2026-11-10
Needs review
LR-1183
Delta EnviroLab
Agbara Textile Mill
OF-02 Dye-house discharge
pH
2026-11-09
Needs review
LR-1181
Coastline Analytical Labs
Onne Metal Finishing
OF-01 Treated rinse water
Total chromium
2026-11-07
Needs review
LR-1179
Coastline Analytical Labs
Ikeja Beverage Plant
OF-01 Final effluent
None
2026-11-03
Approved
LR-1176
Delta EnviroLab
Agbara Textile Mill
OF-01 Combined outfall
None
2026-11-02
Approved
LR-1172
Coastline Analytical Labs
Onne Metal Finishing
OF-01 Treated rinse water
None
2026-10-31
Approved
MAN-0207
Manual entry · on-site meter
Ikeja Beverage Plant
OF-01 Final effluent
None
2026-10-29
Approved
LR-1168
Delta EnviroLab
Agbara Textile Mill
OF-02 Dye-house discharge
None
2026-10-26
Returned
Who it's for
Built for sites that discharge industrial effluent under a permit.
Food and beverage plants
Challenge: High-BOD effluent from CIP cycles, syrup losses and bottle washing.
With Weirledger: Track BOD, COD and TSS per outfall and see cleaning-cycle spikes before the monthly report.
Textile and dye houses
Challenge: Colour, pH swings and COD from batch dyeing.
With Weirledger: Flag out-of-range pH the day the lab result lands and forecast COD across batches.
Metal finishing and chemicals
Challenge: Heavy metals with tight limits and costly breaches.
With Weirledger: Watch chromium, lead and zinc against limits and route low-confidence values for checking.
Environmental consultants
Challenge: Many client sites, many labs, many report formats.
With Weirledger: Manage several facilities in one workspace and produce consistent reports for each client.
Typical users: environmental and HSE managers, plant and utilities engineers, compliance officers and the consultants who support them.
Technology
How We Use Amazon Web Services
Weirledger's architecture is designed on AWS so that a lab certificate can move from upload to an exceedance forecast without manual handling: Amazon Textract reads the document, AWS Lambda runs validation and permit checks, Amazon SageMaker models discharge history, and Amazon Bedrock turns findings into language an operator can act on.
STAGE 1
Data collection
Amazon API Gateway
Receives lab report uploads and manually entered readings from the web app.
STAGE 2
Secure storage
Amazon S3
Holds original lab certificates, permits and extracted records.
STAGE 3
Processing
AWS Lambda + Amazon Textract
Lambda runs each step; Textract pulls tables and values from scans.
STAGE 4
AI intelligence
Amazon SageMaker + Amazon Bedrock
SageMaker forecasts exceedances; Bedrock writes findings and reports.
STAGE 5
Application experience
Weirledger web app
Dashboards, review queue, alerts and report exports.
Amazon Textract:Extracts tables, parameters, units and results from uploaded laboratory reports and scanned certificates.
Amazon Bedrock:Normalises parameter names and units, explains anomalies in plain language and drafts compliance report narratives.
Amazon SageMaker:Trains and hosts models on historical discharge records to detect anomalies and predict likely permit exceedances.
Amazon S3:Stores original lab reports, permit documents and extracted result records with encryption at rest.
AWS Lambda:Runs the processing pipeline: validation, limit checks, model calls and report generation on each upload.
Amazon API Gateway:Provides the secure API between the web application and the processing services for uploads and data entry.
Where we are
Building the MVP. Looking for early-access sites.
Weirledger was founded in 2026. The first release focuses on uploaded laboratory reports and manually entered monitoring data — the records every permitted site already has.
DoneProduct design, data model and interactive preview
In progressMVP: lab report extraction, permit limits, review queue
NextExceedance prediction and compliance reporting with early-access sites
Request early access
Tell us about your site and the monitoring data you work with.
Pricing
Monthly plans by number of facilities.
Starter
₦20,000/ month
For a single facility starting to digitise discharge records.
Lawal Omobola founded Weirledger to give industrial operators a clearer, earlier view of their wastewater compliance. They lead product direction, the MVP build and work with early-access sites.