- Durable HWTS devices offer two years of service life for a representative family. Product safety (due to leaks or worn fittings, for example) is not compromised by normal wear over the two-year product life.
- Product appearance (external surfaces, decoration, and transparent components) is not significantly degraded over service life.
- Products and components pass durability and drop tests, as established by conditions within user households.
- Durability test protocol defined.
- Durability test results.
- Drop test results.
Notes and exceptions
- Durability test criteria required for:
- Interconnect fittings.
- Interconnect seals.
- Upper and lower containers (abrasion resistance and impact resistance).
- External surfaces (abrasion resistance, staining, color fade, and UV resistance).
- Flow limiters/diverters, end-of-life indicators.
- Structural features (feet, handles, flanges, tabs, and stops).
- Relevant national product quality standards.
- PATH Reference Design Product Test Protocols. PATH. Unpublished data, 2010.
- NSF/ANSI Standard 42-2007: Drinking water treatment units—aesthetic effects.
- NSF/ANSI Standard 53-2007: Drinking water treatment units—health effects.
- Full list of supporting evidence and additional materials.
Devices must withstand considerable wear and tear. Photo: PATH.