# Express Water RO5DX: specs and price

**Price (US):** $189.99 (US MSRP $189.99 listed verbatim on the Express Water manufacturer product page (SKU# RO5DX, "$189.99" / data-price-raw="$189.99"). Amazon showed only EUR pricing for German delivery, so the manufacturer USD figure was used.), as of 2026-07-11. Among the 8 reverse osmosis systems we track it is the cheapest; category median $445.
**Brand:** Express Water
**Deskmark:** Gold Deskmark — pay-blind category standing 75/100, #2 of 10 in class (independent, computed from sourced data, never for sale).

## Specifications

| Spec | Value |
| --- | --- |
| Price (US) | $189.99 |
| Brand | Express Water |
| Install type | under-sink |
| Filtration stages | 5 |
| Rated capacity gpd | 50 |
| Pure to drain ratio | — |
| TDS reduction pct | — |
| Remineralization | No |
| Requires electricity | No |
| Storage tank gal | 3.2 |
| Nsf certified standards | 58, 372 |
| Membrane life months | — |
| Annual filter cost usd | — |

## Where it stands

At $190, the Express Water RO5DX is the cheapest of the 8 reverse osmosis systems we track, where the median is $445. On the spec sheet, its filtration stages of 5 is at the median of the 10, its rated capacity gpd of 50 is at the median of the 7, and its storage tank gal of 3.2 is at the median of the 9.

## Frequently asked questions

**How much does the Express Water RO5DX cost?**

The Express Water RO5DX has a US price of $189.99 (US MSRP $189.99 listed verbatim on the Express Water manufacturer product page (SKU# RO5DX, "$189.99" / data-price-raw="$189.99"). Amazon showed only EUR pricing for German delivery, so the manufacturer USD figure was used.), as of 2026-07-11.

**How does the Express Water RO5DX compare on price?**

At $190, the Express Water RO5DX is the cheapest of the 8 reverse osmosis systems we track, where the median is $445.

**What are the Express Water RO5DX's key specs?**

Express Water RO5DX (Express Water): installType under-sink, filtrationStages 5, ratedCapacityGpd 50, remineralization No, requiresElectricity No. Full sourced spec sheet verified 2026-07-11.

Source: https://www.expresswater.com/products/ro-system-ro5dx-with-free-filter-set (expresswater.com, accessed 2026-07-11)
Corroboration: https://www.amazon.com/Express-RO5DX-5-Stage-Certified-Impurities/dp/B00J2DGTD8 (accessed 2026-07-11)
Canonical: https://frontdeskreview.com/product/reverse-osmosis-systems/express-water-ro5dx/
Cite: Per The Front Desk Review, the Express Water RO5DX price of record was $189.99 as of 2026-07-11 — https://frontdeskreview.com/product/reverse-osmosis-systems/express-water-ro5dx/
License: CC BY 4.0. Price history: https://frontdeskreview.com/data/price-history.jsonl