Plumbing Greywater System Size Calculator
Reconcile actual independent recoverable greywater and compatible reuse daily budgets under caller recovery, no carryover; no wastewater quality, cross-connection or safe reuse approval.
Description
Greywater reuse budgets compare recovered daily volume with compatible demand.
Greywater reuse budgets compare recovered daily volume with compatible demand. Without carryover, unused supply and unmet demand are separate.1
The returned values include Modeled recoverable greywater liters day, Modeled unmet reuse demand liters day, Modeled unused greywater liters day. The How section below explains the calculation, input rules and interpretation.
When to use Plumbing Greywater System Size Calculator
Use Plumbing Greywater System Size Calculator when you need to evaluate the supplied records under the calculation and evidence rules below. No storage carryover, water quality, cross-connection or safe-reuse approval is supplied.
Prepare measured flows, pressures, temperatures or inventories with consistent units. For catalog tools, use independently verified capacities at the stated operating conditions and supply the explicit design demand.
How to use Plumbing Greywater System Size Calculator and understand its results
- Prepare measured flows, pressures, temperatures or inventories with consistent units. For catalog tools, use independently verified capacities at the stated operating conditions and supply the explicit design demand.
- Enter observedRecoverableGreywaterLitersDay, callerCompatibleReuseDemandLitersDay, callerTreatmentRecoveryFraction using the field table and calculation rules, then run the tool.
- Read modeledRecoverableGreywaterLitersDay, modeledUnmetReuseDemandLitersDay, modeledUnusedGreywaterLitersDay. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| observedRecoverableGreywaterLitersDay | Observed recoverable greywater liters day | list of number | Required |
| callerCompatibleReuseDemandLitersDay | Caller compatible reuse demand liters day | list of number | Required |
| callerTreatmentRecoveryFraction | Caller treatment recovery fraction | number | Required |
Enter aligned nonempty nonnegative recoverable and reuse-demand liters/day plus recovery fraction 0–1. Return recovered, unmet and unused daily volumes.
recovered_i=raw_i×recovery; unmet_i=max(0,demand_i−recovered_i); unused_i=max(0,recovered_i−demand_i) Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| modeledRecoverableGreywaterLitersDay | Modeled recoverable greywater liters day | list of number |
| modeledUnmetReuseDemandLitersDay | Modeled unmet reuse demand liters day | list of number |
| modeledUnusedGreywaterLitersDay | Modeled unused greywater liters day | list of number |
{
"input": {
"observedRecoverableGreywaterLitersDay": [
100,
150
],
"callerCompatibleReuseDemandLitersDay": [
80,
200
],
"callerTreatmentRecoveryFraction": 0.8
},
"output": {
"modeledRecoverableGreywaterLitersDay": [
80,
120
],
"modeledUnmetReuseDemandLitersDay": [
0,
80
],
"modeledUnusedGreywaterLitersDay": [
0,
0
]
}
}Limitations and assumptions
No storage carryover, water quality, cross-connection or safe-reuse approval is supplied.
Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Numeric lists are limited to 10,000 entries; string lists to 128 strings of at most 128 characters each. The rules above may impose smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use Plumbing Rainwater Harvesting Tank Size Calculator: Rainwater inventory depends on the chronological collection and withdrawal ledger. Starting empty exposes withdrawals that cannot be served. For a complementary task, use Plumbing Septic Tank Size Calculator: Septic storage combines liquid retention with separate sludge and emergency reserves. Measured mean daily wastewater sets the liquid budget.
References
Similar or alternative tools
- Plumbing Rainwater Harvesting Tank Size Calculator
Rainwater inventory depends on the chronological collection and withdrawal ledger. Starting empty exposes withdrawals that cannot be served.
- Plumbing Septic Tank Size Calculator
Septic storage combines liquid retention with separate sludge and emergency reserves. Measured mean daily wastewater sets the liquid budget.