What it is
High-purity calcium carbonate formulated to restore mineral balance and stabilise water chemistry in post-treatment systems, where controlled dissolution determines distribution infrastructure integrity and potable water compliance.
What it does
- Restores mineral balance in treated water post-process
- Stabilises pH and controls corrosion potential within distribution infrastructure
- Improves water clarity, acceptability, and long-term quality
- Enables precise, consistent conditioning dosing
- Supports regulatory compliance with potable water quality standards
Where it’s typically used
Potable water treatment plants, post-treatment conditioning units, and distribution systems where mineral stability, corrosion control, and sustained water quality are operationally essential.
Quality options
- CaCO₃ ≥ 97%
- MgO ≤ 1%
- Fe₂O₃ ≤ 0.05%
- SiO₂ ≤ 1%
- Low moisture
Size
- 0.2 mm - 2 mm granules
- 100 - 200 mesh
- <200 mesh fine grades
- Custom PSD available
Applications
- Mineral balance restoration in post-treatment water systems
- Calcite filtration media for controlled dissolution and pH stabilisation
- Post-treatment conditioning in potable water infrastructure
- Corrosion control across water distribution networks
FAQs
If you have questions about limestone products, specifications, or typical applications, the answers below address some of the most common topics. For anything more specific, our technical team is happy to help.
What makes Cal Hydro the trusted choice for potable water conditioning?
Cal Hydro is engineered where precision is non-negotiable — ≥97% pure CaCO₃, ultra-low iron (≤0.05%), and custom PSD options restore mineral balance and stabilise water chemistry with the consistency that distribution infrastructure demands.
How does Cal Hydro protect water infrastructure while ensuring compliance?
By controlling corrosion potential and stabilising pH at the post-treatment stage, Cal Hydro safeguards pipelines, extends asset life, and keeps operations aligned with potable water regulatory standards — before water ever reaches the end user.
Why do water treatment leaders specify Cal Hydro across conditioning systems?
Because variability is a liability. Cal Hydro's engineered purity and tailored dissolution grades — granular to ultra-fine — give operators exact control over mineral restoration, making it the specification-grade solution for plants, conditioning units, and distribution networks alike.













