NSF Standards

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NSF/ANSI Standards with ANGEL

Discover what NSF/ANSI standards mean for water filtration—and how independent SGS testing helps verify ANGEL product performance.

KNOW THE STANDARDS

UNDERSTANDING NSF/ANSI STANDARDS

Different standards evaluate different aspects of drinking water treatment systems. Here’s what NSF/ANSI 42, 58 and 372 are designed to address.

42

TASTE & ODOR

Covers aesthetic effects such as chlorine taste and odor reduction.

58

RO PERFORMANCE

Evaluates reverse osmosis systems, including applicable performance requirements.

372

LEAD CONTENT

Addresses lead-content requirements for drinking water system components.

58

NSF/ANSI 58

REVERSE OSMOSIS DRINKING WATER TREATMENT SYSTEMS

NSF/ANSI 58 establishes requirements for reverse osmosis drinking water treatment systems, covering system performance, materials, structural integrity and verified reduction claims.

WHAT DOES NSF/ANSI 58 EVALUATE?

01

M

MATERIAL SAFETY

Evaluates materials that come into contact with drinking water.

02

S

STRUCTURAL INTEGRITY

Evaluates whether the system can withstand specified operating conditions.

03

T

TDS REDUCTION

Evaluates the system’s ability to reduce total dissolved solids.

04

E

EFFICIENCY & RECOVERY

Evaluates purified-water production and water-use performance.

REDUCTION CLAIMS

WHAT CAN BE TESTED?

NSF/ANSI 58 includes a required TDS reduction claim and allows additional contaminant reduction claims to be verified when applicable.

REQUIRED CLAIM

TDS REDUCTION

OPTIONAL REDUCTION CLAIMS MAY INCLUDE

Lead Arsenic Fluoride Chromium Copper Perchlorate Nitrate / Nitrite VOCs Cadmium Selenium

IMPORTANT: Individual contaminant reduction claims must be specifically tested and verified. Meeting NSF/ANSI 58 requirements does not automatically mean that every optional reduction claim has been verified.

42

NSF/ANSI 42

AESTHETIC EFFECTS TASTE, ODOR & CHLORINE

NSF/ANSI 42 addresses aesthetic effects in drinking water, focusing on characteristics that may affect taste, odor and appearance.

WHAT DOES NSF/ANSI 42 COMMONLY ADDRESS?

01

C

CHLORINE REDUCTION

Can include claims related to chlorine taste and odor reduction.

02

T

TASTE & ODOR

Evaluates improvements to aesthetic characteristics of drinking water.

03

P

PARTICULATE REDUCTION

May include particulate reduction claims when specifically tested.

THE KEY IDEA

BETTER-TASTING, BETTER-SMELLING WATER

NSF/ANSI 42 is primarily associated with aesthetic water quality. It should not be interpreted as automatically verifying health-related contaminant reduction claims.

NOTE: Specific reduction claims depend on the product and the parameters actually tested and verified.

372

NSF/ANSI/CAN 372

LEAD CONTENT DRINKING WATER SYSTEM COMPONENTS

NSF/ANSI/CAN 372 addresses lead-content requirements for products and components that come into contact with drinking water.

WHAT IT MEANS

MATERIAL LEAD CONTENT

The standard evaluates the lead content of applicable drinking-water contact materials and components.

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WHAT IT DOES NOT MEAN

LEAD REDUCTION

NSF/ANSI/CAN 372 does not evaluate a filter’s ability to remove lead already present in drinking water.

WHAT DOES NSF/ANSI/CAN 372 FOCUS ON?

01

WATER-CONTACT MATERIALS

Applies to relevant materials and components that may come into contact with drinking water.

02

LEAD CONTENT REQUIREMENTS

Evaluates compliance with applicable limits for lead content in drinking-water system components.

03

PRODUCT COMPONENTS

Can apply to parts such as fittings, faucets, housings and other applicable water-contact components.

THE KEY DISTINCTION

372 Lead content in materials

→

58 / 53 Lead reduction claims may be evaluated separately

IMPORTANT: A product meeting NSF/ANSI/CAN 372 requirements should not automatically be described as reducing lead in drinking water. Lead reduction is a separate performance claim that must be specifically tested and verified.

FROM STANDARDS TO RESULTS

HOW ANGEL PRODUCTS ARE TESTED

Independent testing helps verify product performance against applicable industry standards.

01

NSF/ANSI

STANDARDS

→

02
Independent
SGS TESTING

→

03

Performance

VERIFICATION

→

04

ANGEL

TEST RESULTS

Testing against applicable NSF/ANSI requirements is not the same as NSF certification.

PRODUCT TEST REPORTS

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View independent test reports and testing information by product.