Niagara Low-Flow & WaterSense Toilets

Niagara offers 14 low-flow toilets toilets models in the lineup we track. This page is the Niagara-specific cut of the broader Low-Flow & WaterSense Toilets toilets category — same product class, narrowed to the Niagara catalog only.

About Niagara

Niagara — Niagara commercial water heaters.

For the complete Niagara lineup across all sub-types and capacities, see the Niagara Toilets hub.

Niagara Low-Flow & WaterSense Toilets models we track

• Niagara Stealth Sabre 0.8 GPF Two-Piece Elongated Vacuum-Assist Toilet (N7717) — Niagara Stealth Sabre — the lowest-flow gravity toilet IAPMO-certified in the US. 0.8 GPF vacuum-assist trapway, EPA WaterSense Most Efficient.
• Niagara Stealth 0.8 GPF Two-Piece Round-Front Vacuum-Assist Toilet (N7715) — Niagara Stealth Original — the original 0.8 GPF vacuum-assist Niagara. Round-front bowl + UPC C11.301.01.
• Niagara Liberty 1.28 GPF Two-Piece Elongated Toilet (N2840) — Niagara Liberty — Niagara's 1.28 GPF mainstream toilet. WaterSense, comfort height, value-tier alternative to Stealth Sabre.
• Niagara Phantom 1.6 GPF Two-Piece Elongated Toilet (N2238) — Niagara Phantom — 1.6 GPF traditional gravity flush. Landlord-rebuild grade for installations where rebate eligibility isn't a factor.
• Niagara Steaful 1.28 GPF Two-Piece Round-Front Toilet (N7716) — Niagara Steaful — entry-tier 1.28 GPF Niagara. Round-front, comfort height, value-tier WaterSense compliance.
• Niagara Power One 0.8 GPF Two-Piece Elongated Vacuum-Assist Toilet (N7720) — Niagara Power One — refined ultra-low-flow toilet with upgraded vacuum-assist trapway. The newer flagship Niagara at 0.8 GPF.
• Niagara Stealth Dual-Flush 0.8/1.1 GPF Two-Piece Elongated Toilet (N7718) — Niagara Stealth Dual-Flush — vacuum-assist toilet with 0.8 GPF light flush + 1.1 GPF heavy flush. Average use ~0.95 GPF.
• Niagara One One-Piece Elongated 1.0 GPF Toilet (N7950) — Niagara One — sub-1.0 GPF one-piece toilet. Combines water savings + designer one-piece silhouette + WaterSense Most Efficient.

Other Low-Flow Toilets toilets brands

If you're cross-shopping low-flow toilets toilets beyond Niagara, the following brands also ship in this category:

• Kohler Low-Flow Toilets
• TOTO Low-Flow Toilets
• American Standard Low-Flow Toilets
• Eljer Low-Flow Toilets
• Swiss Madison Low-Flow Toilets
• Woodbridge Low-Flow Toilets
• Delta Low-Flow Toilets
• DeerValley Low-Flow Toilets

About Low-Flow & WaterSense Toilets toilets

If "low-flow toilet" is on your search list, you're probably either (a) noticing your water bill, (b) trying to qualify for a state or municipal rebate, or (c) in a drought-zone where every gallon saved is a long-term hedge. Here's exactly what the numbers mean and how to choose between the three tiers.

• Federal maximum since 1994: 1.6 GPF — the Energy Policy Act standard. Any new toilet sold legally in the US is at most 1.6 GPF.
• EPA WaterSense voluntary spec: 1.28 GPF or lower, plus a flush-performance minimum (MaP-tested at 350g of solid waste). Roughly 70% of toilets at retail today carry the WaterSense label.
• California state requirement (since 2014): all new toilets sold in CA must...

  For the complete low-flow toilets buyer's guide (all brands, full comparison framework), see the Low-Flow & WaterSense Toilets category hub.

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