Water Quality in Hempstead, NY
Hempstead's water has 4 contaminants above health guidelines. We recommend using a certified water filter.
Utility
HEMPSTEAD WATER SYSTEM
People Served
120,000
MCL Violations
0
Last Updated
Sep 24, 2025
Quick Summary
Contaminants Detected
⚠️ Contaminants Above Health Guidelines (4)
Chlorine (Total)
What is Chlorine (Total)?
Chlorine is a chemical element with the symbol Cl and atomic number 17. It is a yellow-green gas at room temperature and is a strong oxidizing agent. Chlorine is commonly used in water treatment to kill bacteria and other pathogens, making water safe for drinking.
Health Effects
Exposure to chlorine can cause respiratory issues, skin irritation, and eye irritation. Ingesting high levels of chlorine can lead to gastrointestinal distress and other serious health problems.
Affected Organs
Common Sources
Dibromoacetic Acid (DBA)
What is Dibromoacetic Acid (DBA)?
Member of haloacetic acids (HAAs) that form as byproducts when chlorine reacts with organic matter
Health Effects
Health protective benchmarks for DBA are based on carcinogenicity and liver toxicity observed in animal studies. The EPA has classified DBA as a probable human carcinogen. Results from animal studies also suggest that kidney, immune system, spleen and developmental toxicity are associated with exposure to BDCM. BDCM has been shown to produce DNA changes (genotoxicity) in laboratory studies.
Affected Organs
Common Sources
1,4 Dioxane
What is 1,4 Dioxane?
1,4-Dioxane is a synthetic industrial chemical that is used as a solvent and in the production of other chemicals. It is a colorless liquid with a faint sweet odor and is miscible with water.
Health Effects
Exposure to 1,4-dioxane can cause irritation of the eyes, skin, and respiratory tract. Long-term exposure may lead to liver and kidney damage, and it is classified as a possible human carcinogen.
Affected Organs
Common Sources
Total THMs
What is Total THMs?
Group of contaminants that form in drinking water systems when a disinfectant, typically chlorine, reacts with organic matter
Health Effects
Drinking water standards for total THMs are based on evidence of carcinogenicity in human and animal studies, as well as liver and kidney toxicity observed in animal studies. Individual THMs have been further associated with developmental, immune, spleen, and genotoxicity.
Affected Organs
Common Sources
Understanding the Data
This data comes from your local water utility testing. The bar charts compare detected levels against health guidelines (HGL). Contaminants above the health guideline are shown by default and may require filtration. All other tested contaminants are within safe levels and can be viewed by expanding the section above.
Recommended Water Filters for Hempstead
Based on Hempstead's water quality data, these NSF-certified filters are recommended to remove contaminants above health guidelines.
![EDR3RXD1B[2] [Pb] EDR3RXD1B[2] [Pb]](/_next/image?url=https%3A%2F%2Fm.media-amazon.com%2Fimages%2FI%2F71ZRnnMAgmL._AC_SX355_.jpg&w=3840&q=75)
Whirlpool Corporation
EDR3RXD1B[2] [Pb] EDR3RXD1B[2] [Pb]
NSF Certified:
Capacity
2001 gal
Filter Life
7 mo
Flow Rate
0.5 gpm
Removes 17 contaminants:
1,2 Dichlorobenzene, Asbestos, Atrazine, Benzene, Carbofuran +12 more
Whirlpool Corporation
EDR3RXD1R[2] [Pb] EDR3RXD1R[2] [Pb]
NSF Certified:
Capacity
2001 gal
Filter Life
7 mo
Flow Rate
0.5 gpm
Removes 17 contaminants:
1,2 Dichlorobenzene, Asbestos, Atrazine, Benzene, Carbofuran +12 more
Sears Brands Management Corporation
P1KB1 P1KB1
NSF Certified:
Capacity
2001 gal
Filter Life
7 mo
Flow Rate
0.5 gpm
Removes 18 contaminants:
1,2 Dichlorobenzene, Asbestos, Atrazine, Benzene, Carbofuran +13 more
Omnipure Filter Co.
ELF ELF 1MPF
NSF Certified:
Capacity
500 gal
Filter Life
2 mo
Flow Rate
1.67 gpm
Removes 6 contaminants:
Chlorine (Free), Chlorine (Total), Chlorine Dioxide, Cryptosporidium, Perfluorooctanesulfonic acid +1 more
Frequently Asked Questions
Hempstead's water has 4 contaminants above health guidelines. We strongly recommend using a certified water filter to reduce exposure to these contaminants. Check our filter recommendations below for NSF-certified options that can remove the specific contaminants found in Hempstead's water.