--- title: "NSF 53 vs NSF 58 Water Filter Certs | Dominick Plumbing" description: "NSF 53 vs NSF 58: what each water filter certification covers and how to choose the right one for your Scottsdale home." lang: en json-ld: | [ { "@context": "https://schema.org", "@type": "Plumber", "@id": "https://dominickplumbing.com/#business", "name": "Dominick Plumbing", "legalName": "Dominick Plumbing LLC", "image": "https://dominickplumbing.com/apple-touch-icon.png", "logo": "https://dominickplumbing.com/apple-touch-icon.png", "telephone": "+1-623-323-4538", "email": "info@dominickplumbing.com", "url": "https://dominickplumbing.com", "priceRange": "$$", "foundingDate": "2021-01-01", "identifier": "Arizona ROC 350819", "hasCredential": "Arizona ROC #350819", "address": { "@type": "PostalAddress", "addressLocality": "Scottsdale", "addressRegion": "AZ", "addressCountry": "US" }, "geo": { "@type": "GeoCoordinates", "latitude": 33.4942, "longitude": -111.9261 }, "areaServed": [ { "@type": "City", "name": "Scottsdale, AZ" }, { "@type": "City", "name": "Paradise Valley, AZ" }, { "@type": "City", "name": "Phoenix, AZ" }, { "@type": "City", "name": "Fountain Hills, AZ" }, { "@type": "City", "name": "Cave Creek, AZ" }, { "@type": "City", "name": "Carefree, AZ" }, { "@type": "City", "name": "Tempe, AZ" }, { "@type": "City", "name": "Mesa, AZ" } ], "aggregateRating": { "@type": "AggregateRating", "ratingValue": "5.0", "reviewCount": 200, "bestRating": "5" } }, { "@context": "https://schema.org", "@type": "BlogPosting", "@id": "https://dominickplumbing.com/nsf-53-vs-nsf-58-water-filter-certification#article", "mainEntityOfPage": { "@type": "WebPage", "@id": "https://dominickplumbing.com/nsf-53-vs-nsf-58-water-filter-certification" }, "headline": "NSF 53 vs NSF 58 Water Filter Certs", "name": "NSF 53 vs NSF 58 Water Filter Certs", "description": "NSF 53 vs NSF 58: what each water filter certification covers and how to choose the right one for your Scottsdale home.", "articleSection": "Water Filtration", "datePublished": "2025-09-18", "dateModified": "2025-09-18", "inLanguage": "en-US", "url": "https://dominickplumbing.com/nsf-53-vs-nsf-58-water-filter-certification", "wordCount": 423, "author": { "@type": "Organization", "name": "Dominick Plumbing", "url": "https://dominickplumbing.com" }, "publisher": { "@type": "Organization", "name": "Dominick Plumbing", "url": "https://dominickplumbing.com", "logo": { "@type": "ImageObject", "url": "https://dominickplumbing.com/favicon.ico" } } }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://dominickplumbing.com/" }, { "@type": "ListItem", "position": 2, "name": "Blog", "item": "https://dominickplumbing.com/blog" }, { "@type": "ListItem", "position": 3, "name": "NSF 53 vs NSF 58 Water Filter Certs", "item": "https://dominickplumbing.com/nsf-53-vs-nsf-58-water-filter-certification" } ] } ] --- [![Dominick Plumbing](/assets/dominick-plumbing-logo-kbhHe4U8.png)](/) [Home](/) [Services](/services) - [Water Heater Install & Repair](/services/water-heaters) - [Tankless Water Heater Installation](/services/tankless-water-heater-installation-scottsdale) - [Water Softeners](/services/water-softeners) - [Reverse Osmosis Systems](/services/reverse-osmosis) - [Pipe & Slab Leak Repair](/services/pipe-leak-repair) - [Automatic Leak Detection & Shut-Off](/services/leak-detection-shutoff) - [Drain Cleaning & Hydrojetting](/services/drain-cleaning) - [Toilet Replacement](/services/toilet-replacement) - [Faucet Replacement](/services/faucet-replacement) - [General Plumbing Repair](/services/plumbing-repair) - [View all services →](/services) [Service Areas](/areas) - [Scottsdale](/areas/scottsdale) - [Paradise Valley](/areas/paradise-valley) - [Phoenix](/areas/phoenix) - [Fountain Hills](/areas/fountain-hills) - [Cave Creek](/areas/cave-creek) - [Carefree](/areas/carefree) - [Tempe](/areas/tempe) - [Mesa](/areas/mesa) - [All service areas →](/areas) More - Recommended Products - [TOTO Toilets](/products/toto-toilets) - [Navien Tankless Water Heaters](/products/navien-tankless-water-heaters) - [Trutankless Electric Tankless](/products/trutankless-electric-tankless-water-heaters) - [Encore Reveal Softener](/products/encore-reveal-water-softener) - [Encore IonX5 Conditioner](/products/encore-ionx5-water-conditioner) - [Waterdrop Reverse Osmosis](/products/waterdrop-reverse-osmosis) - [LeakSecure Leak Detection](/products/leaksecure-leak-detection) - [All recommended products →](/products) - Company - [Blog](/blog) - [About](/#trust) - [Contact](/contact) [(623) 323-4538 Call ](tel:6233234538) [All articles](/blog)Water Filtration # NSF 53 vs NSF 58 Water Filter Certs September 18, 2025 5 min read When shopping for a water filter, you’ll often see labels like “NSF 53” or “NSF 58.” These certifications are important because they tell you exactly what kind of protection your filter provides. Let’s break down what these standards mean and why they matter for your family’s health. ## NSF 53: Protecting Against Health-Related Contaminants NSF 53 is a certification that ensures a water filter can reduce or remove specific contaminants that may have health effects. Filters with this certification are tested to remove substances like lead, mercury, volatile organic compounds (VOCs), and cysts such as Giardia and Cryptosporidium. These are the kinds of contaminants that can cause real health problems if they’re present in your drinking ​ If your home has older plumbing, well water, or you’re concerned about lead exposure, an NSF 53 certified filter is a smart choice. These filters use advanced technologies like carbon block or ceramic to trap or neutralize harmful substances, giving you peace of mind that your water is ​ ## NSF 58: Reverse Osmosis Systems for Maximum Purity NSF 58 is specifically for reverse osmosis (RO) systems. These systems use a semi-permeable membrane to remove even the smallest particles and dissolved solids from your water, including things like nitrates, fluoride, and certain radioactive elements. NSF 58 certification means the RO system has been tested for its ability to reduce total dissolved solids (TDS) and other contaminants, ensuring your water is as pure as ​ RO systems are ideal if you want the highest level of filtration, especially in areas with hard water or where water quality is a concern. NSF 58 certification also covers the safety and structural integrity of the system, so you know it’s built to last and perform as ​ ## Why Certification Matters Choosing a filter with NSF 53 or NSF 58 certification means you’re getting a product that’s been independently tested and verified. These certifications ensure that the filter does what it claims—whether that’s removing lead, reducing TDS, or protecting against other contaminants. Always look for the NSF mark when buying a water filter to make sure you’re getting reliable, safe protection for your ​ * * * This blog post is designed to be clear, informative, and reassuring for homeowners who want to understand how water filter certifications protect their families. \_help\_understanding\_nsf\_standards\_and\_reverse/ ## Related services from Dominick Plumbing Need help putting this into practice? Dominick Plumbing offers: - [reverse osmosis system installation](/services/reverse-osmosis) - [whole-house water softener service](/services/water-softeners) Licensed in Arizona (ROC #350819). Call (623) 323-4538 for a free estimate. ### Need a licensed Scottsdale plumber? Dominick Plumbing — Arizona ROC #350819. Honest estimates, no surprises. [Call (623) 323-4538](tel:6233234538) ## Keep reading - [Water Filtration ### Best Water Filter for Brewing Coffee Filtered water makes better coffee. 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What hydrojetting is, the kitchen drain problems it actually fixes, and 2026 costs to hydrojet individual drains in Scottsdale — from a licensed AZ plumber. ](/what-is-hydrojetting-and-when-do-you-need-it) - [Leak Detection ### Whole House Leak Detection System Installation Guide How whole house leak detection system installation works in Scottsdale: placement, prep, 2026 costs, timeline, and calibration from a licensed plumber. ](/whole-house-leak-detection-system-installation) - [Leak Repair ### Main Water Line Repair in Scottsdale: Costs & Signs Main water line repair in Scottsdale: 2026 costs, leak warning signs, repair vs. replace, and trenchless options from a licensed AZ plumber. ](/main-water-line-repair-scottsdale) ![Dominick Plumbing](/assets/dominick-plumbing-logo-kbhHe4U8.png) Family-owned, licensed plumbers serving Scottsdale and the entire Valley. Clean water. Pure confidence. 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