Laguna de Santiaguillo
Laguna de Santiaguillo in Unknown, Mexico has official water-quality measurements, not a LakeQuality A–F grade. Chlorophyll-a (algae): 16.5 µg/L.
Why Laguna de Santiaguillo has no A–F grade
Laguna de Santiaguillo in Mexico is published with the authority's own measurements, not a LakeQuality letter. official authority class; not a LakeQuality A–F letter Sampling here has recorded algae (chlorophyll-a), but not water clarity and phosphorus.
A letter on the LakeQuality scale would be an invention, not an official class. Everything below that has been measured is still reported on this page.
Monitoring: the National Water Commission of Mexico (CONAGUA), via UNEP GEMS/Water.
Laguna de Santiaguillo is a lake in Unknown County, Mexico.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2016-03-15. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Laguna de Santiaguillo
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data. Chlorophyll-a: 16.5 µg/L. Trophic State Index: 58.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | 16.5 µg/L | Not graded |
| Trophic State Index (TSI) | 58 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Laguna de Santiaguillo
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Fishing Laguna de Santiaguillo
Frequently asked questions about Laguna de Santiaguillo
What is the water quality of Laguna de Santiaguillo?
- Laguna de Santiaguillo in Unknown, Mexico has official water-quality measurements, not a LakeQuality A–F grade. Chlorophyll-a (algae): 16.5 µg/L.
Is Laguna de Santiaguillo safe to swim in?
- Laguna de Santiaguillo has official nutrient and clarity measurements, not a bacteria swim class and not a safety clearance. Algal blooms, currents, and depth are not covered. Always check local notices before swimming.
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Where this data comes from
1 measurement from 1 monitoring station, 2016. Retrieved from UNEP GEMS/Water GFQA (not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- Comisión Nacional del Agua
comisionnacionaldelagua1 sample · —
Analytical methods
- GEMStat OPEN / CC BY 4.0
Monitoring station identifiers (1)
MEX00649
Authority classifications are stored separately from LakeQuality A–F letters and are never blended. See methodology and data sources.
Data Sources
Water quality data from the EPA Water Quality Portal
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2016-03-15
Monitoring stations: 1