Nhìn bằng mắt thường, nước máy nhà bạn có vẻ trong veo và an toàn. Nhưng bạn có biết, ẩn sau dòng nước đó có thể là Clo dư, kim loại nặng (chì, asen), hay các vi sinh vật "trốn tìm" mà mắt thường không thấy được?
Để bảo vệ sức khỏe, một hệ thống lọc nước là chưa đủ - bạn cần một hệ thống PHÙ HỢP. Hãy cùng Handyman.vn giải mã cách chọn lọc nước đúng chuẩn nhé! 👇
✅ 1. Bạn lọc nước để làm gì?
Để uống ngon hơn? Nếu nước có mùi lạ (thường là mùi Clo khử trùng), bạn cần bộ lọc giúp cải thiện hương vị và mùi (Tiêu chuẩn NSF 42).
Để an toàn tuyệt đối? Nếu lo ngại về chì, asen hay ký sinh trùng, bạn cần bộ lọc chuyên dụng để loại bỏ chất độc hại (Tiêu chuẩn NSF 53).
✅ 2. Hiểu về công nghệ: RO hay UV?
RO (Thẩm thấu ngược): Dùng áp lực cao đẩy nước qua màng lọc siêu nhỏ. Loại bỏ gần như mọi tạp chất. Nước ra tinh khiết (Tiêu chuẩn NSF 58). Nhược điểm: Có nước thải.
UV (Tia cực tím): Dùng ánh sáng năng lượng cao để diệt vi khuẩn, virus. Nhược điểm: Không lọc được hóa chất hay kim loại nặng.
✅ 3. Vị trí lắp đặt
Lọc tổng đầu nguồn: Xử lý nước sinh hoạt cho cả tòa nhà/biệt thự.
Lọc dưới bồn rửa (Under-sink): Xử lý nước ăn uống trực tiếp tại vòi.
⚠️ CẢNH BÁO TỪ CHUYÊN GIA: Theo CDC (Mỹ), một bộ lọc nước không được bảo trì còn nguy hiểm hơn là không dùng lọc! Lõi lọc quá hạn sẽ trở thành "ổ vi khuẩn" và phát tán ngược lại vào nước uống của bạn.
🛠️ Đừng để ma trận máy lọc làm bạn rối trí! Tại Handyman.vn, chúng tôi không chỉ lắp đặt, chúng tôi mang đến giải pháp: 🔹 Kiểm tra nguồn nước, tư vấn công nghệ lọc phù hợp (RO, Nano, UF...). 🔹 Lắp đặt thẩm mỹ, đúng kỹ thuật. 🔹 Nhắc lịch & thay lõi lọc định kỳ - Bạn không bao giờ phải lo quên lịch bảo dưỡng.
👉 Nước sạch là khởi nguồn của sức khỏe. Inbox ngay cho Handyman để được tư vấn hệ thống xử lý nước chuẩn chỉnh nhất!
Clean That Water: Filtration and Purification Guide
Water may look clean, but it can still contain unwanted tastes, odors or contaminants. The right filtration or purification system can help. This guide explains how to choose the best solution based on your specific water quality needs.
Most water isn't just water. It might look like unadulterated H2O when it comes from the tap, but there's probably other stuff hiding in that flow of molecules. In fact, the EPA confirms that you can expect that water from public systems will have small amounts of some contaminants.
Whether you want purified water for health reasons, you need it for a manufacturing process or you just think it tastes better, you can use a water filtration and purification system to get rid of some of the stuff that might be in your tap water.
The type of water filtration system you'll need depends on what you're trying to accomplish. Do you just want to make sure your water doesn't taste bad? Or is there harmful stuff in your water that you want to remove?
Improving the Taste and Smell
Water treatment plants use a long series of steps to remove unwanted material and make water safe to drink. As a final measure, some systems add disinfecting chemicals to kill any pathogens that remain. That's why some tap water has a "chlorine" taste.
Many water filters can reduce chlorine taste and odor. In fact, according to the Centers for Disease Control and Prevention (CDC), improving the taste is the main purpose of popular refrigerator water filters.
Reducing Contaminants and Pathogens
Some water problems are more serious than undesirable taste and smell. There are harmful chemicals and microorganisms that can be present in your water. Lead, arsenic and Cryptosporidium cysts are examples of contaminants that can some water filters and purification systems can remove.
If eliminating a harmful chemical or microorganism is your goal, it's important to look for a water filter that's effective against the specific thing you want to remove, because no single filter can remove everything.
Knowing What's in Your Water
So how do you know what contaminants your water filters should target? To get a better idea of what's in the water from your community's system, you can consult its consumer confidence report (CCR).
The Environmental Protection Agency (EPA) requires that public systems provide these reports on drinking water quality to their customers, and the CDC explains how to interpret them. You'll learn about any EPA-recognized contaminants that have been found in your public system's water.
If you get your water from a private well, the CDC recommends testing its water at least once per year. Private wells are not regulated by the EPA.
Comparing Water Filters Using NSF Certifications
One way to make sure a water purification system can do what you want it to do is to look at its NSF certification. NSF International establishes public health standards and tests products, and several of its standards are related to water treatment and safety. Here's a good rule of thumb:
If you only care about the taste, you can look for NSF 42 certification. This indicates a filter that reduces impurities that can make water taste and smell bad.
If you're trying to eliminate unhealthy stuff from your water, you can also look for NSF 53 certification. This indicates a filter certified to reduce a contaminant with a health effect. For example, if you want to eliminate lead, you can look for a filter with NSF 53 certification for lead removal.
Understanding RO and UV Systems
Filtration is the most common way to clean water, but there are other water purification technologies to consider.
Reverse osmosis (RO) systems pass water through semipermeable membranes using high pressure. They're effective at removing a wide range of contaminants, and most bottled water is processed using RO systems. But RO systems also produce a significant amount of water waste. NSF 58 indicates a system certified as using reverse osmosis.
Ultraviolet (UV) light systems use high-energy light to kill microorganisms like protozoa, bacteria and viruses. However, UV systems don't remove any chemical contaminants on their own. NSF 55 indicates a system certified as decontaminating water with UV light.
Getting the Water Where You Need it
There are different kinds of water filtration systems for use in different places:
In commercial facilities and homes, whole-building systems treat the water after it comes in from the service line. Under-the-sink systems treat only the water that flows through the connected tap.
For appliances like ice machines, refrigerators and water bottle filling stations, water filters may be integrated into the unit or installed on the line leading to it.
In industrial facilities, process filters treat the water before it's used by processing and manufacturing equipment.
Getting the Most out of Your Water Filtration System
If your water filter isn't properly maintained, it can actually do more harm than good, according to the CDC. Make sure to change the filter regularly and follow the manufacturer's maintenance instructions.
Frequently Asked Questions
What is hard water?
Hard water has calcium and magnesium ions dissolved in it. It's not toxic, but it can have undesirable consequences, like making detergents less effective or depositing scale in pipes, boilers and other equipment.
Water softeners work by exchanging calcium and magnesium ions for sodium and potassium ions. They don't use filtration, so they don't remove other chemicals or microorganisms
Is purified water the same as distilled water?
Distilled water is one type of purified water. The Food and Drug Administration (FDA) regulates how bottled water manufacturers can describe their products, and "purified water" means bottled water that has been processed to meet the U.S. Pharmacopeia definition of purified water. Distillation is one way to produce purified water for bottling—but not all purified water is distilled, so the two are not necessarily interchangeable.
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