# Mesa Del Toro Mwc, CA — Drinking Water Quality (2026)

> Contaminant levels for the Mesa Del Toro Mwc, CA public water system from its 2026 Consumer Confidence Report, compared to federal limits.

- Page: https://www.thewatermap.com/water/ca/mesa-del-toro-mwc/2026
- JSON API: https://www.thewatermap.com/api/water/ca/mesa-del-toro-mwc/2026
- Source: the utility's annual Consumer Confidence Report (CCR)
- Verification: transcribed by a model, cross-checked by a second model, approved before publishing
- Reporting year: 2026
- Contaminants measured: 3
- Contaminants with a federal limit: 3
- Contaminants at or above the federal limit: 1
- Part of The Water Map — https://www.thewatermap.com

## Contaminants measured

| Contaminant | Category | Measured level | Sampling context | Federal limit | Status |
|---|---|---|---|---|---|
| Manganese | Metals | 50 UG/L (Average) | Source water | 50 UG/L (MCL) | At or above the limit |
| Specific Conductance | Physical & aggregate | 1240 UMHO/CM (Average) | Source water | 1600 UMHO/CM (MCL) | Within the limit |
| Total Dissolved Solids | Physical & aggregate | 775 MG/L (Average) | Source water | 1000 MG/L (MCL) | Within the limit |

## What these contaminants are

- **Manganese** — A naturally occurring metal from soil and rock. No enforceable federal limit; high levels stain fixtures and laundry and can affect taste, with a health advisory for infants.
- **Specific Conductance** — A measure of how well water conducts electricity, which tracks dissolved mineral content. Not federally regulated for health; used as a proxy for total dissolved solids.
- **Total Dissolved Solids** — Total dissolved solids — the combined content of all dissolved minerals and salts. Regulated only as a secondary (cosmetic) standard; high levels affect taste and hardness.

## How to read this

- A water-quality report covers an entire service area, not a single address.
- 'Federal limit' is the EPA standard (MCL, action level, treatment technique, etc.) that the measured level is compared against.
- 'At or above the federal limit' means the utility's own reported figure met or exceeded that standard.

_Figures are the utility's own published numbers. Generated 2026-05-26 from thewatermap.com._