Water Safety
Understanding contaminants in your water: PFAS, lead, hard water, TDS, well water testing, and how to protect your home.
Visit Blog
Subcategory
75 articles
General ContaminantsWhy Does My Water Smell Like Chlorine? What to Check
A chlorine or pool smell is usually your utility's disinfectant. Here's when it's normal, why it can suddenly get stronger, and how to measure or remove it.
Well WaterRadium in Well Water: Gross Alpha, Testing and Removal
Gross alpha can't see radium-228, and a high result may be uranium. How to read the radium lines on a well report, what to test next and what removes it.
General ContaminantsWhy Is My Tap Water Cloudy? The 2 Minute Glass Test
Cloudy or milky tap water is usually harmless air. A two minute glass test tells air from particles, with what each result means for city water and wells.
General ContaminantsBlack Specks in Water: Causes and How to Find the Source
Black specks in your water? Three quick questions separate manganese, carbon fines, rubber and sediment.
Well WaterHow to Remove Sulfate From Well Water
Reverse osmosis, distillation and anion exchange remove sulfate. Softeners, carbon and sediment filters do not.
General ContaminantsHow Is Tap Water Treated? Steps From Plant to Faucet
Coagulation, settling, filtration, disinfection and pH control: what each step does, how groundwater systems differ and what can change in city pipes.
General ContaminantsWhat Is Brackish Water? Salinity Ranges Explained
Brackish water sits between fresh and seawater; in wells it means 1,000 to 10,000 mg/L of dissolved solids. Can you drink it, and how is it treated?
General ContaminantsIs School Water Safe to Drink? What Parents Can Check
Lead usually gets into school water from pipes and fixtures. Who tests school taps, what changes in 2027, how to read results and what to ask meanwhile.
Well WaterSaltwater Intrusion in Well Water: Signs and Fixes
Coastal well tasting salty? Learn how saltwater intrusion happens, which lab tests show it, what chloride and sodium numbers mean and how to treat it.
General ContaminantsWhat Does Water Taste Like? What You're Really Tasting
Pure water tastes like almost nothing. Here's what gives your water its flavor, the levels where salty, metallic or chlorine tastes show up, and what to do.
General ContaminantsHow to Read Your Water Quality Report (CCR)
What MCL, MCLG and action level mean, how to read the detected contaminants table and lead results, and what your water report can't tell you.
Well WaterWell Water Test When Buying a House: What to Order
Buying a home with a private well? See when FHA and state rules require a water test, what to test for, who can collect the sample and what to do if it fails.
General ContaminantsIs Rainwater Safe to Drink? How to Treat Roof Water
Rainwater isn't safe to drink straight from the barrel. See how roofs, gutters and PFAS contaminate it and what filtration, UV and testing it needs.
Well WaterRadon in Well Water: Levels, Testing and Treatment
Radon in well water is mostly a breathing risk. See what a pCi/L result adds to indoor air, why to test air first, and how aeration and carbon compare.
General ContaminantsHow to Purify Water: Emergency and Off-Grid Methods
Boil, bleach, tablets or a filter? How to purify water of unknown quality, EPA's bleach dose by strength, and when no home method makes water safe.
General ContaminantsIn-Home Water Test Demonstrations: What They Show
Brown water from metal rods, sludge from drops, a big TDS number, a red dye trick. What each in-home water demonstration shows and how to get a real test.
General ContaminantsGlyphosate in Drinking Water: Risks, Limits & Testing
USGS found glyphosate in 66 of 70 streams it sampled. What that means for your tap, what EPA and IARC concluded, and what removal research shows.
General ContaminantsWhy Tap Water Tastes Salty or Metallic in Summer
Drought concentrates minerals and heat speeds chlorine decay, which can change how tap water tastes. Match salty, chalky, or metallic flavors to the right fix.
Well WaterUranium in Well Water: What Your Test Result Means
Got a uranium result? How to read µg/L, ppb and pCi/L against EPA's 30 µg/L limit, when drinking-water treatment is enough and what to test next.
General ContaminantsWhy Is My Water Brown? How to Read the Color
Brown, yellow or rusty tap water explained: what each color points to, whether it is safe, and the free checks that name the cause before you buy anything.
PFASNJ PFAS Settlement: What It Means for Your Tap Water
New Jersey's PFAS settlements are valued at about $2.5 billion. Here's the real timeline, which limit your utility answers to, and what you can do today.
General ContaminantsChlorine Injection vs Hydrogen Peroxide for Wells
Continuous dosing for well water: when chlorine injection beats hydrogen peroxide, what each does to your softener and RO, and how to order the stages.
General ContaminantsWhat Is Pink Mold? Causes, Removal, and Prevention
Pink mold is not mold. It is a bacterium called Serratia marcescens.
General ContaminantsBest Water Filters for Microplastics (2026)
Compare the best water filters for microplastics: RO, ultrafiltration, ceramic, and carbon, with pore-size specs, honest picks, and prices for every budget.
TDSHow to Use a TDS Meter (and What It Can't Tell You)
How to use a TDS meter correctly, what the ppm number means, and the health contaminants a TDS meter can't detect. A low reading is not a safety test.
PFASPFAS Limits by State (2026): Enforceable MCL Table
See PFAS limits by state for 2026 and how PFAS regulations by state layer with EPA's 4.0 ppt PFOA and PFOS rule, plus what you can do at home.
General ContaminantsSilica in Water: What It Is and How to Remove It
Silica in water is harmless to drink but ruins fixtures, fouls RO membranes, and causes scale. Here's how to test for it and remove it.
General ContaminantsDoes Boiling Water Actually Purify It?
Boiling water kills germs but doesn't remove lead, arsenic, nitrate, or PFAS, and can concentrate them. See what boiling removes and what filtration does.
General ContaminantsHow to Remove Boron From Water
Boron slips through standard filters and single-pass RO. Learn why boron is so hard to remove and the methods that work, from pH-adjusted RO to ion exchange.
General ContaminantsOzone Water Treatment: How It Works (2026)
How ozone water treatment works, what it removes (bacteria, cyanotoxins, iron, odor, and taste), and how to choose a home ozone system.
General ContaminantsWaterborne Diseases: Causes, Symptoms & Prevention
Learn the most common waterborne diseases, their symptoms, and the filtration technologies proven to stop each pathogen at home. A water expert's guide.
General ContaminantsStates With the Worst Tap Water (2026 Data)
See the 10 states with the worst tap water in 2026, drawn from EPA violations, lead service lines, and federal PFAS data, plus how to protect your home.
General ContaminantsWhy Tap Water Tastes Earthy or Musty (Is It Safe?)
Earthy or musty tap water is almost always safe. Learn why geosmin and 2-MIB cause that dirt-like taste in summer, and how carbon filtration fixes it.
Well WaterHow to Shock Chlorinate a Well Safely
How to shock chlorinate a well to clear coliform and E. coli without ruining your RO system or softener. A CDC-backed, step-by-step safe disinfection guide.
General ContaminantsCopper in Drinking Water: Risks and How to Remove It
Copper in drinking water usually comes from corroding pipes. Learn the health risks, the EPA limits, and how to remove copper with RO and pH correction.
Well WaterIs Well Water Safe After Flooding? What to Do
Was your well flooded? Learn the exact steps after flooding or heavy rain, and how to test your well water before drinking it again.
Well WaterHow to Remove Manganese From Well Water
Manganese in well water leaves black stains and is tougher to remove than iron. Learn how to test for it and choose the right removal system.
General ContaminantsChromium-6 in Drinking Water: Risks and Removal
Chromium-6 is a colorless, odorless carcinogen found in tap and well water. Learn the health risks, how it is regulated, and how to remove it.
General ContaminantsCyanotoxins in Drinking Water: Algal Blooms Explained
Cyanotoxins in drinking water come from harmful algal blooms. Learn why you must not boil, what the EPA advisory levels mean, and exactly what to do.
General ContaminantsNitrates in Drinking Water: Risks & How to Remove
Nitrate is invisible in drinking water but risky for infants. Learn the sources, the EPA limit, and how reverse osmosis and ion exchange remove it.
Well WaterWhy Does Well Water Smell Like Rotten Eggs?
Well water that smells like rotten eggs is hydrogen sulfide gas. Learn what causes the sulfur smell, whether it is safe, and how to remove it for good.
General ContaminantsDisinfection Byproducts in Drinking Water: Are They Safe?
Disinfection byproducts in drinking water form when chlorine reacts with organic matter. Learn what THMs are, the EPA limits, and how to reduce them.
Well WaterHow to Remove Iron From Well Water
Iron in well water comes in three forms. Learn how to test for ferrous, ferric, and bacterial iron and pick the right removal system for your home.
General ContaminantsHow to Remove Chlorine From Water (2026 Guide)
Compare 7 proven ways to remove chlorine and chloramine from tap and shower water, from free DIY fixes to whole-house filtration. Find what fits your home.
LeadLead and Copper Rule: What It Requires
The Lead and Copper Rule lowered the lead action level to 10 ppb and requires lead pipe replacement within 10 years. Here is what it means for your home.
General ContaminantsIs Hot Tap Water Safe to Drink?
Hot water pulls more lead from pipes and your heater. Here's why, who's most at risk, and the simple fix.
General ContaminantsData Center Water Usage and Your Drinking Water
Data center water usage is rising fast. Here is what it means for your drinking water and how to protect what comes out of your tap.
PFASWhat Are Forever Chemicals? PFAS Explained
Forever chemicals are PFAS, thousands of synthetic chemicals that resist breaking down. Learn what they are, where they hide, and how to filter them out.
PFASPFAS in Bottled Water: Is It Cleaner Than Tap?
FDA testing found PFAS in some bottled water, and it isn't held to tap water's federal limits. Here's what that means and how to reduce PFAS at home.
General ContaminantsWhat Is the EPA Contaminant Candidate List (CCL 6)?
The EPA's CCL 6 put microplastics and pharmaceuticals on its drinking water watch list. Here is what the contaminant candidate list means for your tap.
General ContaminantsThe Environmental Impact of Bottled Water
The environmental impact of bottled water adds up fast, from plastic waste to nanoplastics. Here is the real cost and how home filtration helps.
PFASPFAS in Well Water: Risks, Testing, and Removal
PFAS in well water is your responsibility to find and fix. Learn how forever chemicals reach private wells, how to test, and which filters remove them.
PFASPFAS Water Testing: How to Check Your Water
Learn how PFAS water testing works, which EPA lab methods detect forever chemicals, and how to read your results in parts per trillion.
PFASPFAS Health Effects: What the Research Shows
PFAS health effects explained: what research links to cholesterol, immune, cancer, and pregnancy, who is most at risk, and how to remove PFAS from water.
General ContaminantsBoil Water Advisory: What to Do
A boil water advisory means your tap water may be unsafe. Learn what to do during one, what to skip, and how to restart your filters after it lifts.
PFASEPA PFAS Drinking Water Regulations 2026
The EPA proposed two changes to PFAS drinking water regulations in 2026: PFOA and PFOS limits stay at 4 ppt, deadlines may move to 2031, four limits may end.
General ContaminantsPharmaceuticals in Water: What's in Your Tap and How to Remove It
Pharmaceutical medications in water affect millions of Americans. Learn how drugs get in your tap water and how to remove them with proven filtration.
PFASPFAS Contamination Map by Zip Code | Check Your Area
Search nearly 10,000 PFAS contamination sites by zip code. See military bases, drinking water systems, and EPA data for your area.
General ContaminantsEPA RealWaterTA Initiative: What It Means for You (2026)
The EPA's new RealWaterTA initiative refocuses support for water systems nationwide. Here's what changed, who it affects, and how to protect your water at home.
General ContaminantsHow to Test Your Water at Home | Complete Guide
Learn how to test your well water or city water at home. Find out what to test for, how to read results, and which filtration system fixes each problem.
General ContaminantsPennsylvania Water Crisis 2025: PFAS, Lead & Safe Solutions
PFAS, lead, and toxic runoff contaminate Pennsylvania water in 2025. Learn health risks, latest advisories, and safe filtration solutions.
Well WaterHow to Test Your Well Water: A Complete Testing Guide
Learn how to test your well water for bacteria, nitrates, arsenic, and more. Sample collection, lab vs home kits, and what your results mean.
PFASHow to Detect PFAS in Tap Water: 5 Warning Signs
PFAS are invisible in tap water. Learn 5 risk factors that signal contamination, how to test with certified labs, and which filters actually remove forever chemicals.
PFASPFAS in Tap Water: Health Risks & How to Remove Them
PFAS are 'forever chemicals' found in 45% of US tap water. Learn the health risks and the filters proven to remove up to 99%.
General ContaminantsTap Water Contaminants: What They Are and How to Remove Them
What is in your tap water? A complete guide to common contaminants, their health risks, EPA limits, and the filtration that removes each one.
Hard WaterWhat Causes Hard Water? 5 Natural Causes
Hard water comes from calcium and magnesium in rock and soil. Learn the 5 natural causes, test your hardness, and find the right Crystal Quest fix.
Hard WaterHow to Test Water Hardness at Home: 4 Easy Methods
Test your water hardness at home with strips, your city report, the soap bottle test, or a lab. Learn what GPG means and which treatment system you need.
Hard Water10 Signs You Have Hard Water (and How to Fix It)
Spotty dishes, dry skin, rising energy bills? Learn the 10 most common signs of hard water in your home and how Crystal Quest systems fix them.
TDSTDS vs Water Hardness: Key Differences & Treatment
TDS counts all dissolved solids. Hardness counts only calcium and magnesium.
TDSTDS in Water: What It Is and Why It Matters
TDS stands for Total Dissolved Solids. Learn what TDS means, how to test it, ideal ranges for drinking water, and how Crystal Quest RO systems reduce TDS.
Hard WaterHard Water Guide: Understanding and Treating Water Hardness
Wondering what hard water really is? Get a clear breakdown of causes, health & appliance impacts, and Crystal Quest solutions to get rid scale and save money.
ArsenicArsenic in Drinking Water: Risks, Testing & Removal
Arsenic in water is tasteless and invisible. Learn the health risks, how to test, and which filters remove Arsenic III and V.
TanninsUnderstanding Tannins in Drinking Water
: The Complete Guide You turn on the faucet and the water looks like weak tea. It might have a faint yellow tinge, a deep amber hue, or an outright brown color.
LeadLead in Drinking Water: Risks, Testing & Removal
Lead enters water through aging pipes, not the source. Learn how to test for lead, what the EPA action levels mean, and which filters actually remove it.
FluorideFluoride in Tap Water: What to Know & How to Filter It
73% of US tap water contains fluoride. Learn what the research says, which filters actually remove fluoride, and how to test your water.