What this is
What is a water discharge record?
What is a water discharge record?
A water discharge record is the periodic log of what a trade effluent or surface water discharge consent controls: volume, period, whether volume and quality parameters sat within limits, and whether the treatment plant conditioning the discharge was operating as designed.
How is it different from an effluent sampling record?
The discharge record is the operating log: volume, period, treatment plant status and a working read of parameters. The sampling record is the laboratory result from a sample analysed externally. The two feed each other but answer different questions.
Who keeps a water discharge record?
The environmental lead, or whoever the permit schedule names, working from the site's own flow meters and process checks. A spot-reading record is only as good as when that reading was taken.
Scope
When is a water discharge record required?
This record is the operating log behind a discharge consent. It is not a substitute for the lab-analysed sample, and it is not the right place to plan or evidence a capital change to the treatment plant.
Use this template when
- A discharge event or period covered by the permit schedule has occurred, or is about to
- Volume, quality parameters or treatment plant status need to be logged against consent limits
- A flow meter reading or calibration check needs recording alongside the discharge it relates to
- An exceedance has occurred and needs cause, notification and any linked breach recorded
- The Environmental Management programme requires this record as one of its steps
Do not use it for
- Effluent Sampling Record, the laboratory analysis of a sample, not the operating log
- Water Consumption Log, water taken in by area or process rather than discharged
- Interceptor Maintenance Record, emptying and inspecting an interceptor as an asset, not a discharge
- Air Emissions Log, a different discharge medium with its own consent limits
- Anything outside KnowEnviro, which belongs in the workspace that owns that process
Compliance mapping
Which EPA NPDES requirements does this satisfy?
The consent is issued against a specific permit, and its conditions set what this record has to demonstrate. The form's sections map onto that structure: what was discharged, whether the plant that conditions it was working, and what happened when a limit was not met.
| Clause | Requirement | Where it lands |
|---|---|---|
| Clean Water Act NPDES programme (40 CFR Part 122) | Permit conditions setting discharge limits by parameter, with monitoring and recording of the discharge that occurred | Quality parameters |
| 40 CFR 122.41(j) | Monitoring results recorded and retained, including the measurement method and its reliability | Volume |
| Water Industry Act 1991, s.118 (trade effluent consents, GB) | Consent conditions specifying the discharge point, nature and volume of trade effluent permitted to sewer | Header |
| Environmental Permitting (England and Wales) Regulations 2016 | Permit conditions for discharge to controlled waters, including plant operation and maintenance standards | Treatment |
| 40 CFR 122.41(l) | Noncompliance reporting: instances of noncompliance reported to the permitting authority within the period specified | Exceedances |
| ISO 14001:2015 cl.10.2 | Nonconformity and corrective action following an identified breach of a compliance obligation | Exceedances |
What it does not cover
- Effluent Sampling Record, the laboratory-analysed sample result against consent parameters, not the operating log of volume and period.
- Water Consumption Log, which records intake and use, the opposite side of the water balance from discharge.
- Interceptor Maintenance Record, an asset maintenance record for the interceptor rather than a discharge log.
- Emissions Permit Compliance Review, which addresses the air discharge medium under its own permit conditions.
- Permit Condition Compliance Log, the register-level view across all permit conditions rather than a single discharge event.
Global
Water Discharge Record requirements by country
The duty to hold a discharge consent and log against it is close to universal, but what counts as the consent, who issues it and what triggers mandatory notification differs by regime.
Clean Water Act NPDES programme, 40 CFR Part 122
Discharges to surface water require an NPDES permit with parameter-specific limits and monitoring conditions.
Noncompliance instances must be reported to the permitting authority within the timeframe the permit specifies, not held for the next routine return.
Water Industry Act 1991 s.118 (trade effluent to sewer); Environmental Permitting Regulations 2016 (controlled waters)
Discharge to sewer needs a trade effluent consent from the water company; discharge to a watercourse needs an environmental permit.
The two routes carry different regulators and limit-setting logic, so the discharge type recorded here has to match the consent actually held.
ISO 14001:2015
Compliance obligations, including discharge consents, must be monitored and evaluated, with nonconformities corrected.
A certification audit checks that an exceedance produced a documented corrective action, not just that limits were recorded.
How to complete it
How to complete a water discharge record, step by step
The template prompts for a number against a limit. What separates a defensible record from a compliant-looking one is whether the plant and the metering behind that number were actually in the state the record implies.
A volume figure is only as trustworthy as the meter that produced it. Recording the meter as working and in calibration alongside the reading is what lets someone later trust the trend, not just the latest figure.
Consent limits are set per parameter, and a site can be well inside limits on most while breaching one. Rate each result against its own limit, not a general impression, since that is what the consent requires.
Pre-treatment, screening, fat trap or DAF, balancing capacity and pH correction determine what reaches the discharge point before any parameter is checked. A plant logged partly working warns the next result may fail, not a note added after it does.
An exceedance recorded as yes with no cause, no notification decision and no linked breach has stated a fact without acting on it. Cause, who was told, and the permit condition affected make the record usable if the regulator asks.
What auditors find
Most common water discharge record findings
The discharge record almost always exists where a consent is held. The findings concern whether it reflects the plant and meter behind the number.
| Finding | Clause | What fixes it |
|---|---|---|
| Volume logged against a flow meter recorded as unreliable or overdue for calibration. | 40 CFR 122.41(j) | Recalibrate or repair the meter before relying on its reading; flag that period's volume as an estimate. |
| Quality parameters averaged or summarised instead of rated individually against their own limit. | Clean Water Act NPDES programme (40 CFR Part 122) | Rate each parameter against its own limit; one failing parameter is a breach regardless of the others. |
| Treatment plant element logged as partly working with no follow-up action raised. | Environmental Permitting Regulations 2016 | Raise a maintenance record the moment a treatment element is anything less than fully operating. |
| Exceedance recorded with no cause identified. | ISO 14001:2015 cl.10.2 | Require a cause before the record can close; a cause-less exceedance cannot be prevented from recurring. |
| Water company or regulator not informed where the consent requires notification. | 40 CFR 122.41(l) | Check the notification requirement against the specific consent, not a general minor-exceedance assumption. |
| Breach of a permit condition not linked forward to the permit register or compliance log. | ISO 14001:2015 cl.9.1.1 | Enter the permit register ID and compliance log ID as soon as a breach is confirmed. |
Case in point
Case in point: the discharge that passed on paper for a year
A meat processing site logged its trade effluent discharge weekly against a sewer consent covering pH, BOD, suspended solids and fats, oils and grease. Every record showed all four parameters within limit, the balancing tank and fat trap both logged as working, and the annual regulatory return came back clean.
An unannounced water company inspection found the fat trap's skimmer had seized eight months earlier: the fats, oils and grease figure had been entered from a template default because the site's test kit had run out of reagent and nobody flagged it. Every field had an answer, but one was not a measurement. The fix was a rule that a missing measurement blocks the record rather than defaulting to the last good figure.
The template
The template, field by field
The form exactly as it installs. Every field, option, score and conditional rule is editable, and the links to other templates come with it.
5 sections
- Reference
- ENV-027
- Archetype
- Record
- Record ID
- WDR2-2026-000
- Scoring
- Result against limit
- Direction
- High is bad
- Singleton
- No
- Basis
- EPA NPDES, local sewer bylaws
- Links
- Links Site, Permit
- Tags
- Environment, Water
- Sections
- 5
- Fields
- 44
- Follow up fields
- 6
- Repeating sections
- 1
- Links out
- 5
Header
11 fieldsRecord ID*
Auto sequence. Format WDR-2026-000.
The record's own ID. Other templates point at this value.
Status*
Drives who this goes to next.
- Planned2 pts
- In progress2 pts
- Complete3 pts
- Deferred0 pts
- Open0 pts
- Closed3 pts
- Overdue0 pts
Date and Time*
Completed By*
Site*
Site ID*
Format SITE-000.
Links to FDN-001 Site ID
Area
The area within the site.
Exact Location
Drop a pin for anything hard to find.
Discharge Point*
Discharge Type*
Trade effluent to sewer, treated effluent to watercourse, cooling water, or surface water.
Consent Number
Volume
6 fieldsVolume Discharged*
Period*
Consent Volume Limit
Within Volume Limit*
- Yes3 pts
- Marginal1 pt
- No0 pts
Flow Meter Working*
- Yes3 pts
- Unreliable1 pt
- No0 pts
Meter Calibration Current*
- Yes3 pts
- Overdue0 pts
Quality parameters
Repeats6 fieldsParameter*
pH, COD, BOD, suspended solids, fats oils and grease, ammoniacal nitrogen, phosphorus, temperature.
Result*
Consent Limit*
Within Limit*
- Yes3 pts
- Marginal1 pt
- No0 pts
Percent Of Limit
Trend Versus Last Period
- Improving3 pts
- Stable2 pts
- Worsening0 pts
Treatment
6 fieldsPre-Treatment Operating*
- Yes3 pts
- Partly1 pt
- No0 pts
Screening Working*
- Yes3 pts
- Partly1 pt
- No0 pts
Fat Trap Or DAF Working*
- Yes3 pts
- Partly1 pt
- No0 pts
Balancing Capacity Adequate*
A single CIP discharge can breach a pH consent instantly without balancing.
- Yes3 pts
- Marginal1 pt
- No0 pts
pH Correction Operating
- Yes3 pts
- Partly1 pt
- No0 pts
Sludge Removed On Schedule*
- Yes3 pts
- Overdue1 pt
- No0 pts
Exceedances
15 fieldsAny Exceedance*
- No3 pts
- Yes0 pts
Cause Identified
Water Company Or Regulator Informed
- Yes3 pts
- No0 pts
Charges Or Penalties Incurred
Notification Record ID
Links to ENV-003 Record ID
Permit Condition Affected*
Discharge consent, emissions permit, waste licence or abstraction licence.
- No3 pts
- Yes0 pts
Permit Register ID
Links to ENV-039 Register ID
Breach Of Permit Condition*
- No3 pts
- Yes0 pts
Compliance Log ID
Links to ENV-040 Log ID
Action Required*
Raise the action record, then enter its reference here.
- No2 pts
- Yes0 pts
Priority
- High0 pts
- Medium1 pt
- Low3 pts
CAPA ID
Format CAPA-2026-00000.
Links to FDN-014 CAPA ID
Action Owner
Environmental Lead*
Signature*
ENV-027 · record IDs look like WDR2-2026-000 · Links Site, Permit
Open in KnowellaRun it with agents
From a document you fill in to a programme that runs itself
The record depends on machinery nobody sees on the page: whether the meter behind a figure was trustworthy, whether a partly-working plant element got an action, and whether an exceedance reached the people the consent names.
Holds the discharge record against the site's consent and permit register, and flags when a quality parameter or treatment element has drifted across successive records.
Tracks the flow meter's calibration status and the treatment plant's maintenance history, so a meter or fat trap logged unreliable produces a work order rather than a footnote.
Connects the environmental lead's competency and any sampling or metering technique to the training records behind them.
Watches exceedances and unresolved plant issues across records, and raises notification and permit-linkage steps rather than waiting for the next scheduled review.
This template lives in KnowEnviro — environment and energy. Aspects, permits, waste, emissions, spills and sustainability reporting.
Meet KnowEnviro→Glossary
Water Discharge Record definitions and key terms
- Trade effluent
- Liquid discharged from industrial or commercial premises to a sewer, other than surface water or domestic sewage, controlled under its own consent.
- Consent limit
- The maximum value permitted for a parameter under a discharge consent, breached the moment any single result exceeds it, regardless of other parameters.
- Balancing capacity
- Storage that evens out variation in flow or quality before treatment, preventing a short, concentrated discharge such as a CIP batch from breaching a limit instantly.
- Fat trap / DAF
- Pre-treatment equipment removing fats, oils, grease or suspended solids by gravity separation or dissolved air flotation ahead of the discharge point.
- Discharge consent
- The permit or agreement, issued by a regulator or sewerage undertaker, setting what may be discharged, at what volume and quality, and to where.
FAQ
Frequently asked questions about water discharge record
How is a water discharge record different from an effluent sampling record?+
The discharge record is the operating log: volume, period, treatment plant condition and a working check of quality parameters. The sampling record is the laboratory-analysed result. A site typically runs both, with the sampling result feeding back into the quality parameters here.
What happens if only one parameter exceeds its limit?+
That is a breach. A discharge inside limits on pH, BOD and suspended solids but over on fats, oils and grease has still breached its consent. Each parameter is rated individually, not as an overall impression.
Does a flow meter fault need its own record?+
Log it here at the point the reading is entered, and raise a maintenance record if it is unreliable or overdue for calibration. A figure from a flagged meter should be treated as an estimate until fixed.
Who has to be told about an exceedance?+
Depends on the consent: a trade effluent consent to sewer names the water company, while discharge to a watercourse under an environmental permit names the regulator. The specific consent decides who and by when.
Does treatment plant condition belong on a discharge record?+
Yes. Pre-treatment, screening, fat trap or DAF, balancing capacity and pH correction determine what reaches the discharge point, and a plant element logged as partly working is a leading indicator of a parameter about to fail.
Can this record be adapted to a site's specific consent parameters?+
Yes. Parameters, limits, discharge types and notification logic are all editable to match the consent a site holds, and links to the permit register and compliance log travel with those edits.
Keep going
Related templates and programmes
Industries this is written for
Programmes this belongs to
Used together in Environmental Management
Legal and Other Requirements Register
Lists every law, regulation, permit and commitment that applies to your operation
Compliance Evaluation Record
Records the periodic evaluation of whether you actually comply with each obligation
Waste Stream Register
Lists every waste stream produced on site, with its classification, container and disposal route
Waste Transfer Record
Records waste leaving site, including type, quantity, carrier and destination
Hazardous Waste Record
Records generation, storage and disposal of hazardous waste
Waste Area Inspection
Checks waste storage areas for correct segregation, labelling, containment and housekeeping
Written and reviewed by
Siddarth Singh
Founder & Chief Executive Officer, Knowella
Certified Safety Professional and industrial and systems engineer with more than a decade inside food supply chain, freight and manufacturing operations. This page was written against the current text of the standards it cites, not against secondary summaries of them.
- Certified Safety Professional (CSP), Board of Certified Safety Professionals
- MBA, University of Chicago Booth School of Business
- MS and BS, The Ohio State University, Industrial and Systems Engineering
- Six Sigma Black Belt
Sources and last review. Reviewed 16 August 2026 against:
- Clean Water Act NPDES programme, 40 CFR Part 122 (US)
- 40 CFR 122.41, monitoring, recording and noncompliance reporting conditions (US)
- Water Industry Act 1991, section 118, trade effluent consents (GB)
- Environmental Permitting (England and Wales) Regulations 2016
- ISO 14001:2015, clauses 9.1.1 and 10.2
This page is general guidance, not legal advice. Confirm requirements with your jurisdiction’s regulator.