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Building the MVP · early access open

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.

OF-01 · BOD5 · mg/LSAMPLE DATA
BOD5
61
limit 50
COD
238
limit 250
pH
7.4
6–9
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
  1. Day 1
    Sample collected at the outfall
    Composite sample sent to an external laboratory.
  2. Day 6
    Lab certificate arrives by email
    A scanned PDF with a results table and handwritten corrections.
  3. Day 9
    Someone retypes it
    Values copied into a spreadsheet; units converted manually.
  4. Day 28
    Monthly report preparation
    BOD exceedance from Day 1 is spotted for the first time.
  5. Day 30
    Report filed, breach explained
    Corrective action is now retrospective — and the trend was visible on Day 6.
  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
ReportFacility / outfallExceedancesSampledStatus
LR-1184
Coastline Analytical Labs
Ikeja Beverage Plant
OF-01 Final effluent
BOD5
2026-11-10Needs review
LR-1183
Delta EnviroLab
Agbara Textile Mill
OF-02 Dye-house discharge
pH
2026-11-09Needs review
LR-1181
Coastline Analytical Labs
Onne Metal Finishing
OF-01 Treated rinse water
Total chromium
2026-11-07Needs review
LR-1179
Coastline Analytical Labs
Ikeja Beverage Plant
OF-01 Final effluent
None2026-11-03Approved
LR-1176
Delta EnviroLab
Agbara Textile Mill
OF-01 Combined outfall
None2026-11-02Approved
LR-1172
Coastline Analytical Labs
Onne Metal Finishing
OF-01 Treated rinse water
None2026-10-31Approved
MAN-0207
Manual entry · on-site meter
Ikeja Beverage Plant
OF-01 Final effluent
None2026-10-29Approved
LR-1168
Delta EnviroLab
Agbara Textile Mill
OF-02 Dye-house discharge
None2026-10-26Returned

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.

  • 1 facility, up to 3 outfalls
  • Lab report extraction
  • Permit limit checks and alerts
  • Monthly compliance summaries
Request early access

Growth

Most sites
₦30,000/ month

For multi-outfall operations that want early warning.

  • Up to 3 facilities
  • Everything in Starter
  • Exceedance prediction and trends
  • Review queue with audit trail
Request early access

Enterprise

₦40,000/ month

For groups and consultants managing many sites.

  • Multiple facilities and clients
  • Everything in Growth
  • Risk assessments per facility
  • Custom report templates and onboarding
Request early access

Team

The Team Behind Weirledger

LO

Lawal Omobola

Founder

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.

Contact

Talk to the team.

omo@weirledger.site Weirledger on LinkedIn