Yes, but we recommend using identical filters for best performance. Mixing filter types can create uneven flow and inconsistent filtration.

Most gravity filters are sold two per order. Check the product listing to confirm.

Imperial filters have more surface area and typically a higher flow rate. Both are effective. Imperial filters are a better fit for larger systems or higher daily use.

It depends on your water and usage. Most gravity filters are replaced every 6–12 months. Follow the guidance on your specific product listing.

Yes. Our gravity filters are compatible with most Berkey systems and similar gravity-fed units.

They are optional flow enhancers. If flow remains slow after proper flushing and 1–2 weeks of use, installing the tubes may improve flow. They are not required.

New gravity filters may take up to two weeks to reach optimal flow. Sediment-heavy water, air pockets, and clogging can also slow filtration. See your troubleshooting guide for steps.

Discoloration is normal and indicates the filter is capturing contaminants. Clean gently as outlined in the maintenance instructions.

A temporary “new filter” taste can occur from harmless manufacturing residues. This typically resolves within a few days to two weeks after proper flushing.

Ceramic filters can crack if dropped. If a filter is damaged, replace it to ensure safe and effective filtration.

A major drop in flow, persistent off taste, or visible damage can indicate the need for cleaning or replacement.

No. Our systems are designed to reduce contaminants while preserving naturally occurring, beneficial minerals.

No. We do not offer reverse osmosis systems. Our approach focuses on effective filtration that preserves beneficial minerals without harsh treatment or excessive wastewater.

No. Water chemistry is complex and no system removes 100% of everything. Our goal is meaningful contaminant reduction to safe, responsible levels, supported by testing and real-world performance.

We do not recommend it. TDS meters measure dissolved solids, including healthy minerals. Because our systems preserve minerals, TDS may stay the same or increase and does not reflect filtration performance.

For accurate results, use comprehensive lab testing such as SimpleLab Tap Score. Chlorine strip tests can be a helpful spot check for certain systems. Order a test here.

Reach out to our team. We can help you interpret results and recommend a practical next step based on your water source and goals.

No. Red dye tests are unreliable, do not represent real-world filtration performance, and can damage filters.

Yes. We offer well-water-suitable options in under-sink, countertop, and gravity-fed configurations. Always confirm suitability in the product details.

Because well water varies widely and can involve complex dynamics, we require a consult before recommending a whole home setup for well water. Please email angel@greenfieldwater.com or complete our free Whole Home Consult Form so we can review your water and discuss options.

Many are NSF certified. Others use NSF-tested media or have third-party lab testing. We are transparent about certifications and testing on each product listing.

Yes. Inline remineralizers or mineral bags can be added if desired. Our systems are designed to preserve beneficial minerals naturally, so remineralization is optional.

Yes. Gravity-fed systems operate without electricity when paired with the appropriate filters. We are also developing an emergency gravity filtration kit planned for 2025–2026.

Some filters reduce fluoride. Please refer to individual product listings for fluoride reduction capability.

Yes. We offer replacement filters, priming tubes, accessories, and key system components.

Yes. Greenfield Water Solutions remains family-owned. Our CEO, Ængel Greenfield, is the daughter of founder Gary Greenfield.