Bottle Filler Filter Replacement Guide | Elkay, Oasis, Halsey Taylor

How Often Should You Replace Bottle Filler Filters? (Elkay, Oasis, Halsey Taylor, Haws, and Murdock)

How often should you replace the filter in a bottle filling station? The answer depends on the filter installed in the unit. Some commercial filters are rated for 3,000 gallons, while others are rated for 4,750, 6,000, or even more. Many manufacturers also specify a maximum service period, such as one year.

That is why a generic replacement schedule does not work for every bottle filler. The correct interval depends on the filter model, gallon capacity, water usage, and manufacturer recommendations.

If you are trying to identify the correct filter for your unit, see our complete Water Fountain Filter Guide.

Why Replacing Your Filter on Time Matters

Bottle filler filters can reduce contaminants and other substances such as lead, chlorine taste and odor, particulates, cysts, microplastics, and PFAS, depending on the specific filter and its certifications. Not every filter is certified for the same reduction claims, so it is important to match the filter to both the unit and your facility's filtration needs.

As a filter approaches its rated capacity, flow can decrease and the filter may no longer provide its certified contaminant reduction performance. Following the manufacturer's replacement schedule helps maintain water quality and proper bottle filler performance.

You can browse our selection of bottle filler and drinking fountain filters by manufacturer and model.

What Do Bottle Filler Filters Remove?

Modern bottle filler filters can do much more than improve taste. Filters from Elkay, Oasis, Halsey Taylor, Haws, and Murdock are available with different certifications and contaminant reduction capabilities. Always check the specifications for the exact cartridge you are using.

Lead

Many commercial bottle filler filters are certified to NSF/ANSI 53 for lead reduction. Examples include the Elkay 51300C and 51600C, Halsey Taylor 55898C, Oasis VersaFilter III, and Haws 6428.

Chlorine Taste and Odor

Activated carbon is commonly used to reduce chlorine taste and odor. This is one of the most common filtration functions found in commercial bottle filling station filters.

PFAS (Forever Chemicals)

PFAS reduction is filter-specific. For example, the Elkay 71300C is certified to reduce PFOA and PFOS, while the Murdock WF3000 is designed and certified for reduction of multiple PFAS compounds. Do not assume that every filter from a manufacturer provides PFAS reduction.

Cysts and Bacteria

Some filters are certified for cyst reduction, while certain specialized filters provide additional bacteria reduction or removal. These claims vary considerably by filter. For example, the Murdock WF3000 uses a two-stage filtration system and is third-party certified for cyst reduction and tested for bacteria removal.

Microplastics and Sediment

Some newer commercial filters are certified to reduce microplastics in addition to particulates and sediment. Elkay's 51300C, 51600C, and 71300C are examples of filters with NSF/ANSI 401 microplastics reduction certification.

The important point is that filter compatibility and filtration performance are not the same thing. A cartridge may physically fit a system while having different capacity or contaminant reduction capabilities. Always verify the exact filter specification.

Bottle Filler Filter Replacement Schedule by Brand

Newer Elkay Pro Filtration Systems

Elkay has introduced a newer Pro Filtration platform for compatible Pro Filtration bottle fillers. Current options include the FLP4 Total PFAS filter rated for 4,000 gallons, FL6 high-capacity filter rated for 6,000 gallons, and FL10 ultra-capacity filter rated for 10,000 gallons.

These filters belong to the newer Pro Filtration system and should not be treated as direct replacements for traditional Elkay WaterSentry cartridges. If you have a newer Elkay bottle filler, identify which filtration system it uses before ordering a replacement.

How to Tell It Is Time for a Filter Change

Many modern bottle filling stations include a filter status indicator, but the colors, monitoring method, and reset procedure can vary by manufacturer and generation.

For many Elkay ezH2O systems, green indicates the filter is operating normally, yellow indicates the filter should be changed, and red indicates that the filter has reached the end of its monitored life and may no longer be effective. Other brands and models may use different indicators.

If your unit does not have a filter monitor, keep a maintenance record and follow the gallon capacity and service-life recommendation for the exact cartridge. A noticeable reduction in water flow can also be a reason to inspect the filter and system.

Step-by-Step Filter Replacement

Replacement procedures vary by model, so always follow the instructions for your specific bottle filler and filter system. A typical replacement involves:

1. Confirm the correct replacement filter before removing the old cartridge.
2. Follow the manufacturer's instructions for shutting off the water supply or relieving pressure when required.
3. Remove the access panel if necessary.
4. Remove the old cartridge according to the filter manufacturer's instructions.
5. Install the new cartridge securely in the filter head.
6. Restore water flow and inspect the connections for leaks.
7. Flush the new filter according to the manufacturer's instructions.
8. Reset the filter monitor if your unit requires a manual reset.
9. Record the installation date for future maintenance.

Do You Need to Reset the Filter Light?

It depends on the bottle filler. Some systems require a manual filter-monitor reset, while newer systems may recognize a replacement automatically. For example, Elkay enhanced bottle filling stations with FillSafe technology can detect a new compatible Elkay filter and automatically reset the filter monitor.

Because reset procedures vary by model and generation, use the instructions for your specific bottle filler rather than relying on a universal button sequence.

Choosing the Right Replacement Filter

Do not choose a replacement filter based only on brand or gallon capacity. Filters that look similar can have different contaminant reduction certifications, capacities, dimensions, filter heads, and compatibility requirements.

Before ordering, check:

• Bottle filler model number: Usually found on the product label or inside the service area.
• Existing filter part number: Often the fastest way to identify the correct replacement.
• Rated capacity: Make sure you are following the replacement schedule for that cartridge.
• Contaminant reduction requirements: Lead, PFAS, microplastics, cysts, chlorine taste and odor, and other claims vary by filter.

Using genuine manufacturer filters also makes it easier to verify compatibility and certified performance. If you are unsure, our Water Fountain Filter Guide can help narrow down the correct cartridge.

Maintenance Tips

• Record the filter part number and installation date when installing a new cartridge.
• Check the filter monitor regularly if your bottle filler has one.
• Keep a replacement cartridge on hand in high-use facilities where gallon capacity can be reached quickly.
• Follow manufacturer flushing instructions after installing a new filter.
• After periods of extended inactivity, follow the bottle filler manufacturer's recommissioning and flushing instructions.
• Do not assume that a higher-capacity filter is compatible simply because it is made by the same manufacturer.

A Note for Michigan Schools

Michigan schools and child care centers have additional requirements under the state's Filter First program. If you are maintaining drinking water equipment in a Michigan school or child care facility, see our Michigan Filter First Law Compliance Guide for information specific to those facilities.

FAQs

How long does an Elkay ezH2O filter last?
It depends on the filter. The Elkay 51300C is rated for 3,000 gallons or 12 months, the 51600C for 6,000 gallons or 12 months, and the 71300C for 2,250 gallons or 12 months. Replace the filter when the applicable gallon or time limit is reached.

How long does an Oasis VersaFilter III last?
The current Oasis 041145-001 VersaFilter III has a rated capacity of 4,750 gallons and a service life of up to 12 months. Older Oasis filtration systems may use different cartridges and capacities.

Which filter does a Halsey Taylor bottle filler use?
Many Halsey Taylor bottle filling stations with WaterSentry filtration use the 55898C replacement filter, rated for 3,000 gallons or one year. Always verify the bottle filler model because older and different Halsey Taylor systems may use another cartridge.

Can I replace my bottle filler filter with a higher-capacity filter?
Only if the manufacturer lists the filter as compatible with your filtration system. A higher gallon rating does not automatically mean the cartridge will fit or provide the same contaminant reduction performance.

Do all bottle filler filters remove PFAS?
No. PFAS reduction is specific to the filter and its certifications. Verify the reduction claims for the exact cartridge if PFAS filtration is required.

How do I reset the filter light after changing the filter?
Reset procedures depend on the bottle filler model. Some require a manual reset, while newer systems may automatically recognize a compatible replacement filter. Follow the instructions for your specific unit.

Why is my filter light still red after replacing the filter?
The filter monitor may still need to be reset, or the unit may require a compatible filter that can be recognized by the monitoring system. Check the instructions for your specific bottle filler and replacement cartridge.