Actionable guides and explainers to help people understand drinking water quality data.
Guide · 2026-07-07
A sulfur smell in tap water is usually hydrogen sulfide gas, not a health emergency. Learn how to tell a water-heater problem from a well or municipal water issue, and how to fix each.
Read article →Guide · 2026-07-07
Brown, yellow, or rusty tap water is usually iron, manganese, or disturbed sediment. Learn the difference between a temporary city-water disruption and a chronic well water issue.
Read article →Guide · 2026-07-07
Roughly 43 million Americans rely on private wells the EPA does not test. A practical schedule for what to test, how often, and the warning signs that mean test now.
Read article →Guide · 2026-07-07
Most U.S. tap water is safe for pregnancy and formula, but lead, nitrate, PFAS, and fluoride each deserve a specific check. Here is what to look at before you decide.
Read article →Guide · 2026-07-07
Hard water isn't a health risk, but it damages appliances and dries out skin and hair. Learn how to recognize it and why a softener and a filter solve different problems.
Read article →Guide · 2026-07-07
Chlorine taste is usually intentional disinfection working as designed; metallic taste usually points to your home's own plumbing. Here is how to tell them apart.
Read article →Guide · 2026-07-07
A room-by-room checklist for what to boil, what's fine to skip, and how long advisories typically last, based on CDC guidance.
Read article →Contaminant Guide · 2026-06-23
Lead guide: EPA limit of 15 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Arsenic guide: EPA limit of 10 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
PFOA (Perfluorooctanoic Acid) guide: EPA limit of 0.004 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
PFOS (Perfluorooctane Sulfonate) guide: EPA limit of 0.004 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Nitrate guide: EPA limit of 10 mg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Nitrite guide: EPA limit of 1 mg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Fluoride guide: EPA limit of 4 mg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Copper guide: EPA limit of 1.3 mg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Barium guide: EPA limit of 2 mg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Chromium (Total) guide: EPA limit of 100 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Chromium-6 guide: EPA limit of 10 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Mercury guide: EPA limit of 2 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Selenium guide: EPA limit of 50 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Antimony guide: EPA limit of 6 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Beryllium guide: EPA limit of 4 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Cadmium guide: EPA limit of 5 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Cyanide guide: EPA limit of 200 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Thallium guide: EPA limit of 2 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Chlorine guide: EPA limit of 4 mg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Chloramine guide: EPA limit of 4 mg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Chlorine Dioxide guide: EPA limit of 0.8 mg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Total Trihalomethanes guide: EPA limit of 80 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Haloacetic Acids (HAA5) guide: EPA limit of 60 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Bromate guide: EPA limit of 10 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Chlorite guide: EPA limit of 1 mg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Total Coliform guide: EPA limit of 0 presence, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
E. coli guide: EPA limit of 0 presence, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Giardia lamblia guide: EPA limit of 0 organisms/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Cryptosporidium guide: EPA limit of 0 organisms/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Legionella guide: EPA limit of 0 organisms/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Turbidity guide: EPA limit of 1 NTU, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Benzene guide: EPA limit of 5 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Toluene guide: EPA limit of 1000 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Xylene guide: EPA limit of 10000 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Styrene guide: EPA limit of 100 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Vinyl Chloride guide: EPA limit of 2 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Carbon Tetrachloride guide: EPA limit of 5 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Dichloromethane guide: EPA limit of 5 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Trichloroethylene (TCE) guide: EPA limit of 5 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Tetrachloroethylene (PCE) guide: EPA limit of 5 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
1,2-Dichloroethane guide: EPA limit of 5 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
1,1-Dichloroethylene guide: EPA limit of 7 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
cis-1,2-Dichloroethylene guide: EPA limit of 70 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
trans-1,2-Dichloroethylene guide: EPA limit of 100 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
MTBE (Methyl tert-Butyl Ether) guide: EPA limit of 20 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Atrazine guide: EPA limit of 3 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Simazine guide: EPA limit of 4 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Alachlor guide: EPA limit of 2 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Glyphosate guide: EPA limit of 700 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
2,4-D guide: EPA limit of 70 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Dalapon guide: EPA limit of 200 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Endrin guide: EPA limit of 2 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Lindane guide: EPA limit of 0.2 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Methoxychlor guide: EPA limit of 40 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Toxaphene guide: EPA limit of 3 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Polychlorinated Biphenyls (PCBs) guide: EPA limit of 0.5 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Dioxin (2,3,7,8-TCDD) guide: EPA limit of 0.00003 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Pentachlorophenol guide: EPA limit of 1 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
DBCP (Dibromochloropropane) guide: EPA limit of 0.2 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
EDB (Ethylene Dibromide) guide: EPA limit of 0.05 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Radium-226 guide: EPA limit of 5 pCi/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Radium-228 guide: EPA limit of 5 pCi/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Radon guide: EPA limit of 300 pCi/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Uranium guide: EPA limit of 30 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Gross Alpha Particle Activity guide: EPA limit of 15 pCi/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Gross Beta Particle Activity guide: EPA limit of 50 pCi/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Strontium-90 guide: EPA limit of 8 pCi/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Tritium guide: EPA limit of 20000 pCi/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Asbestos guide: EPA limit of 7 MFL, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Total Hardness guide: EPA limit of 500 mg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Total Dissolved Solids guide: EPA limit of 500 mg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Sulfate guide: EPA limit of 250 mg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Chloride guide: EPA limit of 250 mg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Iron guide: EPA limit of 300 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Manganese guide: EPA limit of 50 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Zinc guide: EPA limit of 5000 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Aluminum guide: EPA limit of 200 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Perchlorate guide: EPA limit of 56 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
1,4-Dioxane guide: EPA limit of 35 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
GenX Chemicals guide: EPA limit of 0.01 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Heptachlor guide: EPA limit of 0.4 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Heptachlor Epoxide guide: EPA limit of 0.2 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Oxamyl (Vydate) guide: EPA limit of 200 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Picloram guide: EPA limit of 500 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Dinoseb guide: EPA limit of 7 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Hexachlorobenzene guide: EPA limit of 1 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Hexachlorocyclopentadiene guide: EPA limit of 50 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
BHC-gamma (Lindane) guide: EPA limit of 0.2 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Di(2-ethylhexyl) adipate guide: EPA limit of 400 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →Contaminant Guide · 2026-06-23
Di(2-ethylhexyl) phthalate guide: EPA limit of 6 μg/L, health effects, common sources, and effective treatment options for US tap water.
Read article →State Rankings · 2026-06-23
North Dakota ranks 2nd nationally for drinking water quality in 2026, with an average score of 93/100 (Grade A) across 92 public water systems.
Read article →State Rankings · 2026-06-23
Delaware ranks 3rd nationally for drinking water quality in 2026, with an average score of 91/100 (Grade A) across 62 public water systems.
Read article →State Rankings · 2026-06-23
Maryland ranks 4th nationally for drinking water quality in 2026, with an average score of 91/100 (Grade A) across 165 public water systems.
Read article →State Rankings · 2026-06-23
Nebraska ranks 5th nationally for drinking water quality in 2026, with an average score of 91/100 (Grade A) across 140 public water systems.
Read article →State Rankings · 2026-06-23
South Dakota ranks 6th nationally for drinking water quality in 2026, with an average score of 91/100 (Grade A) across 115 public water systems.
Read article →State Rankings · 2026-06-23
South Carolina ranks 10th nationally for drinking water quality in 2026, with an average score of 89/100 (Grade B) across 249 public water systems.
Read article →State Rankings · 2026-06-23
Wyoming ranks 11th nationally for drinking water quality in 2026, with an average score of 89/100 (Grade B) across 74 public water systems.
Read article →State Rankings · 2026-06-23
New Hampshire ranks 12th nationally for drinking water quality in 2026, with an average score of 88/100 (Grade B) across 99 public water systems.
Read article →State Rankings · 2026-06-23
Maine ranks 13th nationally for drinking water quality in 2026, with an average score of 87/100 (Grade B) across 93 public water systems.
Read article →State Rankings · 2026-06-23
Oregon ranks 15th nationally for drinking water quality in 2026, with an average score of 87/100 (Grade B) across 233 public water systems.
Read article →State Rankings · 2026-06-23
Virginia ranks 16th nationally for drinking water quality in 2026, with an average score of 87/100 (Grade B) across 343 public water systems.
Read article →State Rankings · 2026-06-23
Alabama ranks 17th nationally for drinking water quality in 2026, with an average score of 86/100 (Grade B) across 441 public water systems.
Read article →State Rankings · 2026-06-23
Montana ranks 18th nationally for drinking water quality in 2026, with an average score of 86/100 (Grade B) across 124 public water systems.
Read article →State Rankings · 2026-06-23
Indiana ranks 19th nationally for drinking water quality in 2026, with an average score of 85/100 (Grade B) across 431 public water systems.
Read article →State Rankings · 2026-06-23
Idaho ranks 22nd nationally for drinking water quality in 2026, with an average score of 84/100 (Grade B) across 126 public water systems.
Read article →State Rankings · 2026-06-23
Tennessee ranks 24th nationally for drinking water quality in 2026, with an average score of 84/100 (Grade B) across 389 public water systems.
Read article →State Rankings · 2026-06-23
Vermont ranks 25th nationally for drinking water quality in 2026, with an average score of 84/100 (Grade B) across 85 public water systems.
Read article →State Rankings · 2026-06-23
Arkansas ranks 26th nationally for drinking water quality in 2026, with an average score of 82/100 (Grade B) across 374 public water systems.
Read article →State Rankings · 2026-06-23
Connecticut ranks 28th nationally for drinking water quality in 2026, with an average score of 80/100 (Grade B) across 104 public water systems.
Read article →State Rankings · 2026-06-23
Kansas ranks 29th nationally for drinking water quality in 2026, with an average score of 80/100 (Grade B) across 284 public water systems.
Read article →State Rankings · 2026-06-23
Missouri ranks 30th nationally for drinking water quality in 2026, with an average score of 80/100 (Grade B) across 519 public water systems.
Read article →State Rankings · 2026-06-23
Nevada ranks 31st nationally for drinking water quality in 2026, with an average score of 79/100 (Grade B) across 113 public water systems.
Read article →State Rankings · 2026-06-23
Hawaii ranks 32nd nationally for drinking water quality in 2026, with an average score of 78/100 (Grade B) across 66 public water systems.
Read article →State Rankings · 2026-06-23
Mississippi ranks 35th nationally for drinking water quality in 2026, with an average score of 74/100 (Grade C) across 629 public water systems.
Read article →State Rankings · 2026-06-23
Iowa ranks 36th nationally for drinking water quality in 2026, with an average score of 73/100 (Grade C) across 335 public water systems.
Read article →State Rankings · 2026-06-23
Massachusetts ranks 37th nationally for drinking water quality in 2026, with an average score of 73/100 (Grade C) across 321 public water systems.
Read article →State Rankings · 2026-06-23
Rhode Island ranks 40th nationally for drinking water quality in 2026, with an average score of 69/100 (Grade C) across 41 public water systems.
Read article →State Rankings · 2026-06-23
Kentucky ranks 42nd nationally for drinking water quality in 2026, with an average score of 66/100 (Grade C) across 334 public water systems.
Read article →State Rankings · 2026-06-23
Utah ranks 45th nationally for drinking water quality in 2026, with an average score of 64/100 (Grade C) across 219 public water systems.
Read article →State Rankings · 2026-06-23
New Mexico ranks 46th nationally for drinking water quality in 2026, with an average score of 63/100 (Grade C) across 163 public water systems.
Read article →State Rankings · 2026-06-23
West Virginia ranks 48th nationally for drinking water quality in 2026, with an average score of 53/100 (Grade D) across 248 public water systems.
Read article →State Rankings · 2026-06-23
Oklahoma ranks 49th nationally for drinking water quality in 2026, with an average score of 41/100 (Grade F) across 405 public water systems.
Read article →State Rankings · 2026-04-16
Minnesota ranks 8th in the nation for tap water quality in 2026. Explore the East Metro PFAS case linked to 3M, agricultural nitrate in groundwater, and the state’s strong overall infrastructure.
Read article →State Rankings · 2026-04-16
Wisconsin ranks 27th in the nation for tap water quality in 2026. Explore the Marinette-area PFAS case, agricultural nitrate in groundwater, and how the state’s many private wells factor into local water quality.
Read article →State Rankings · 2026-04-16
Colorado ranks 17th in the nation for tap water quality in 2026. Explore the legacy of historic mining impacts on mountain watersheds, PFAS near Air Force bases, and the state’s strong municipal treatment infrastructure.
Read article →State Rankings · 2026-04-16
Louisiana ranks 46th in the nation for tap water quality in 2026. Explore how aging New Orleans-area infrastructure, the industrial corridor along the Mississippi River, and saltwater intrusion affect the state’s drinking water.
Read article →State Rankings · 2026-04-09
Michigan ranks 12th in the nation for tap water quality in 2026. Explore how the post-Flint lead service line replacement program and PFAS cleanup efforts have reshaped the state’s water systems.
Read article →State Rankings · 2026-04-09
Georgia ranks 29th in the nation for tap water quality in 2026. Explore how rapid Atlanta-area growth, PFAS near the carpet-manufacturing region around Dalton, and rural groundwater systems shape the state’s score.
Read article →State Rankings · 2026-04-09
Arizona ranks 41st in the nation for tap water quality in 2026. Explore how naturally occurring arsenic, Colorado River dependence, and PFAS near military airfields shape water quality across the state.
Read article →State Rankings · 2026-04-09
North Carolina ranks 33rd in the nation for tap water quality in 2026. Explore the Cape Fear River GenX/PFAS case, coal ash impacts, and agricultural runoff in eastern North Carolina.
Read article →State Rankings · 2026-04-02
Illinois ranks 26th in the nation for tap water quality in 2026. Explore the impact of lead service lines, Lake Michigan source water, and downstate well contamination.
Read article →State Rankings · 2026-04-02
Pennsylvania ranks 31st in the nation for tap water quality in 2026. Explore the impact of legacy mining drainage, PFAS near former military sites, and thousands of small rural water systems.
Read article →State Rankings · 2026-04-02
New Jersey ranks 19th in the nation for tap water quality in 2026. Explore the state's pioneering PFAS standards, the Newark lead service line replacement program, and dense urban infrastructure challenges.
Read article →State Rankings · 2026-04-02
Ohio ranks 24th in the nation for tap water quality in 2026. Explore how Lake Erie algal blooms, industrial legacy contaminants, and post-Toledo investments shape water quality across the state.
Read article →State Rankings · 2026-03-20
Alaska ranks 50th in the nation for tap water quality in 2026. Discover why remote infrastructure, natural arsenic, and high turbidity levels impact AK water.
Read article →State Rankings · 2026-03-20
California ranks 22nd in the nation for tap water quality in 2026. Explore key findings, common contaminants like arsenic and chromium-6, and city-level rankings.
Read article →State Rankings · 2026-03-20
Florida ranks 28th in the nation for tap water quality in 2026. Discover the impact of saltwater intrusion, PFAS hotspots, and city-level safety scores in FL.
Read article →State Rankings · 2026-03-20
New York ranks 15th in the nation for tap water quality in 2026. Explore the legacy of NYC's Catskill system, upstate PFAS concerns, and infrastructure updates in NY.
Read article →State Rankings · 2026-03-20
Texas ranks 35th in the nation for tap water quality in 2026. Learn about key challenges including lead, nitrate, and radium levels in TX water systems.
Read article →City Spotlight · 2026-03-12
An updated look at Jackson, Mississippi's drinking water system in 2026: what caused the 2022 crisis, what has improved under federal oversight, and how to check current data.
Read article →City Spotlight · 2026-03-12
How spring permafrost thaw affects turbidity, minerals, and PFAS monitoring in Fairbanks, plus practical filtration advice for residents and private well owners.
Read article →City Spotlight · 2026-03-12
How rising sea levels and saltwater intrusion are affecting Miami's Biscayne Aquifer, and what residents can do to protect their water quality.
Read article →State Rankings · 2026-03-11
New 2026 data ranks Washington 37th for tap water quality, averaging 1,991 violations per 100,000 residents. Compare WA cities and water systems.
Read article →City Spotlight · 2026-03-08
Learn about the Flint water crisis history, EPA responses, lead contamination facts, and how to look up water quality for any US city using WaterQ.
Read article →Guide · 2026-03-07
Learn how to test your tap water with DIY kits, certified labs, and EPA resources. Includes step-by-step instructions and what to do if you find contaminants.
Read article →Guide · 2026-03-07
Learn about PFAS ("forever chemicals") in U.S. drinking water: health risks, testing, regulation updates, and how to find PFAS data for your area.
Read article →Guide · 2026-03-07
Learn how WaterQ calculates water quality scores (0-100), what grades A-F mean, and how to use scores to evaluate drinking water safety.
Read article →Guide · 2026-03-06
A practical workflow for lead-related local searches: city overview, contaminant context, side-by-side comparisons, and system-level checks.
Read article →Guide · 2026-03-05
A practical guide to reading city and utility water quality reports: contaminants, limits, violations, and what to do next.
Read article →