The short answer
One of the most practical ways to protect a Cabo water system is to keep suspended dirt and debris out of the cistern — or capture it immediately downstream — before it reaches pumps, valves and finer treatment equipment.
That does not mean every property should install the same sock filter or the same micron rating. Pipa fill rates, pipe size, pressure, overflow configuration and municipal-vs-delivery supply all affect the design.
MirAqua principle: sediment protection should be simple, visible and sized for the way the property actually receives water.
What sediment filtration does
A sediment filter targets suspended particles such as sand, silt, rust flakes and other debris according to the filter’s actual rating and configuration.
It can help:
- reduce particulate accumulation in the cistern;
- protect pump impellers, valves and small passages;
- reduce loading on downstream cartridge filters;
- make maintenance more predictable;
- provide visible evidence of incoming particulate load.
It does not:
- soften water;
- remove dissolved calcium or magnesium;
- remove all dissolved contaminants;
- disinfect water;
- prove that water is microbiologically safe.
Where to put sediment protection
There are several valid locations.
At the cistern inlet
This can be effective when the property has an accessible fill point and the filter can safely handle the delivery flow without backing up or overflowing.
Possible approaches include:
- coarse removable basket/mesh screens;
- bag/sock-style filters designed for the expected flow;
- purpose-built housings on a dedicated fill line.
After the cistern pump
For many properties, a main-line spin-down or cartridge filter after the pump is easier to service and control. The water is pressurized, housings can be bypassed, and differential pressure can eventually be monitored.
This protects downstream plumbing and treatment, although it does not prevent sediment from accumulating in the cistern itself.
Two-stage approach
Where particulate loading is high, a useful architecture can be:
- coarse washable protection first;
- finer cartridge filtration downstream.
The exact micron sequence should be chosen from observed loading, flow and downstream equipment requirements rather than a universal Cabo rule.
Why we are not prescribing a universal 100-micron sock
The previous version of this page treated a 100-micron sock as the default Cabo answer and claimed it would not meaningfully affect a pipa fill.
That is too broad.
A high-flow delivery can overwhelm an undersized bag or housing. Restriction depends on:
- filter area;
- micron rating;
- how quickly the filter loads;
- hose diameter and delivery flow;
- available head/pressure;
- fill-port geometry;
- whether the cistern can overflow safely if flow backs up.
A filter that works perfectly on one property can create a fill problem on another.
A practical decision guide
If water arrives by pipa at high flow
Start by inspecting the fill point and delivery rate. Use a coarse, high-area solution only if it can safely pass the actual flow. If inlet filtration is impractical, capture sediment immediately after the cistern pump instead.
If water enters slowly from a municipal connection
A properly sized inline sediment housing can be more practical because flow is lower and continuous.
If the property already has visible cistern sediment
A new inlet filter will not remove what is already inside. Pair prevention with a documented cistern cleaning where appropriate.
If downstream filters clog rapidly
That is useful diagnostic information. Inspect the first-stage cartridge or spin-down screen, document what it captures and consider increasing upstream coarse filtration area before simply installing finer cartridges.
What a strong Cabo installation looks like
A well-designed sediment stage should have:
- sufficient flow capacity;
- isolation/bypass where practical;
- serviceable placement;
- pressure gauges before and after a pressurized cartridge stage when useful;
- a washable first stage where loading is heavy;
- a defined cleaning/replacement trigger;
- no unsupported claim that a specific micron rating makes the water safe.
For cartridge systems, differential pressure can be more informative than replacing filters only by calendar. As the filter loads, pressure drop rises. That creates an opportunity for simple gauges now and connected monitoring later.
What the used filter can tell you
A dirty filter is excellent visual evidence that suspended material was captured.
But it should not be over-interpreted.
A brown or black cartridge does not tell you by appearance alone:
- which minerals are present;
- whether bacteria are present;
- whether the water is unsafe;
- whether the source was municipal or a particular well.
The strongest MirAqua evidence will pair photos with dates, delivery/source information when known and, where useful, measurements.
Sediment vs. hardness
This distinction matters throughout the site.
Sediment is suspended material that can be physically filtered.
Hardness is dissolved calcium/magnesium and passes through ordinary sediment filters.
If your complaint is white mineral scale, measure hardness. If your complaint is visible sand, debris or rapidly clogged filters, sediment protection is the relevant starting point.
What about carbon?
Carbon is not simply a “better sediment filter.” It is media used for specific taste, odor, chlorine and other product-specific chemical-removal objectives.
Whole-house carbon also removes disinfectant residual, so placement should be intentional in a stored-water system. Do not automatically place carbon upstream simply because it is sold as a premium second stage.
Cost and ROI: what we can say safely
Sediment filtration can be inexpensive relative to the pumps, valves, heaters and downstream treatment it helps protect. The exact return depends on:
- incoming particulate load;
- filter cost and replacement frequency;
- pump/equipment value;
- service labor;
- how often the cistern otherwise requires cleaning.
We do not currently claim that inlet filtration universally removes 60–80% of Cabo sediment, saves MXN 5,000–15,000 per year or produces a 10–30x annual return. Those numbers require documented field data.
A better sales proposition is observable:
Install the right first-stage filter, document what it captures and measure how long it lasts. Then optimize from evidence.
Frequently asked questions
Will an inlet filter slow a pipa delivery?
It can. The effect depends on the filter’s surface area, micron rating, loading and the delivery flow. Never assume a filter is safe at full pipa flow without sizing it.
What micron rating should I use?
There is no universal Cabo number. Use a coarse-first approach when loading is heavy and size the filter around actual flow and the downstream equipment you are protecting.
Will a sediment filter reduce TDS or hardness?
No. Ordinary sediment filtration removes suspended particles, not dissolved ions.
Does a dirty filter mean the water was unsafe?
No. It proves particulate material was captured. Microbiological and chemical safety require the appropriate tests.
Should filtration go before or after the cistern?
Either can be appropriate. Before-storage filtration reduces material entering the tank; after-pump filtration is often easier to engineer and service. Some properties benefit from both.
Do I need to clean the cistern if I install a filter?
If sediment and deposits are already present, filtration will not remove them. Prevention and cleaning solve different parts of the problem.
Start with the minimum Cabo system
Sediment protection is one of four questions every Cabo property should understand alongside storage condition, hardness and drinking water.