Facility & maintenance
Needs clear controls and logs for stable operations.
Guide: buildings & Barcelona ordinance
Greywater
Greywater reuse for buildings & hotels
EvalAgua turns RD 1085/2024 and local rules into verifiable decisions for your basic project.
- ·Incoming quality bounded with explicit assumptions.
- ·Reuse applications aligned with real operations.
- ·Documented comparison when multiple routes are plausible.
Start with Evaluation Inicial
A comparative baseline for your operation.
No site visit required. Same input data, same evaluation framework across all relevant technologies and manufacturers — whether you already have proposals or haven't asked for any yet.
Use cases
Four common greywater realities
Hotels & resorts
High laundry/shower volumes with clear peaks.
Offices
More stable streams when sanitary separation is credible.
Gyms
Many showers; variability driven by peak occupancy.
Residential
Mix of new towers and retrofits with imperfect separation.
Teams
Who needs evidence before buying equipment
Engineering & PM
Must defend the baseline during internal technical review.
Sustainability
Requires a narrative backed by comparable data.
Procurement
Needs comparable specs across vendors.
Process
Four moves to align decisions
- 01
Regulatory translation
From legal requirements to checkable project parameters.
- 02
Baseline data
Plan how to close gaps without late improvisation.
- 03
Comparison
Relevant routes on identical inputs.
- 04
Decision package
Recommendation plus documented rejections for the basic project.
Start with Evaluation Inicial
A comparative baseline for your operation.
No site visit required. Same input data, same evaluation framework across all relevant technologies and manufacturers — whether you already have proposals or haven't asked for any yet.
Why it matters
Friction shows up without comparability
Split interpretations
Without a shared baseline every reviewer starts from different assumptions.
Ignored operations
The best train fails when controls aren’t feasible day-to-day.
Early vendor lock
Committing to a vendor before comparing weakens defensibility.
Late rework
Fixing uncertainty during construction costs more than closing it early.
Next steps
What to prepare before requesting Eval
- 1.Greywater capture diagram vs sanitary drains.
- 2.Draft list of reuse applications on site.
- 3.Existing quality data (or known gaps).
- 4.Internal approval milestones and signatories.
- 5.Vendor-mentioned technology routes (if any).
If you mostly need ordinance-specific orientation, start from the dedicated guide too.
When multiple routes are on the table, compare before you commit.
Start with Evaluation Inicial
A comparative baseline for your operation.
No site visit required. Same input data, same evaluation framework across all relevant technologies and manufacturers — whether you already have proposals or haven't asked for any yet.