Gahanna Tap Water Quality Report
Gahanna's water has 4 contaminants above EPA MCLGs. We recommend using a certified water filter.
Utility
COLUMBUS PUBLIC WATER
People Served
1,277,848
MCL Violations
0
Last Updated
2025-09-30
Is Gahanna Tap Water Safe to Drink?
Gahanna's water has 4 contaminants above EPA health-based 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 Gahanna's water.
The data below shows test results from COLUMBUS PUBLIC WATER SYSTEM, which serves 1,277,848 people in the Gahanna area. Water quality testing is conducted regularly and reported to the EPA. This report was last updated 2025-09-30.
Gahanna Water Quality Test Results
Key Water Quality Metrics
Contaminants Detected
⚠️ Contaminants Above EPA MCLG (4)
Bromoform
What is Bromoform?
Member of trihalomethanes (THMs) that form in water treated with chlorine
Health Effects
Health protective benchmarks for bromoform are based on liver, developmental, and carcinogenicity observed in animal studies. Results from animal studies also suggest that exposure to bromoform can also lead to liver, kidney, and developmental toxicity. Bromoform has also been shown to produce DNA changes (genotoxicity) in laboratory studies.
Affected Organs
Common Sources
Bromodichloromethane
What is Bromodichloromethane?
Member of trihalomethanes (THMs) that form in water treated with chlorine
Health Effects
Health protective benchmarks for BDCM are based on carcinogenicity and liver toxicity observed in animal studies. The EPA has classified BDCM 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
Dichloroacetic Acid (DCA)
What is Dichloroacetic Acid (DCA)?
Member of haloacetic acids (HAAs) that form as byproducts when chlorine reacts with organic matter
Health Effects
Health protective benchmarks for DCA are based on evidence of increased cancer risk and liver toxicity observed in animal studies. Adverse effects to the male reproductive system have also been associated with elevated levels of DCA in animal studies. The EPA classifies DCA as a likely human carcinogen.
Affected Organs
Common Sources
Cryptosporidium
What is Cryptosporidium?
Cryptosporidium is a microscopic parasite that causes the diarrheal disease cryptosporidiosis. It is resistant to chlorine disinfection and can survive in water for long periods. The parasite is transmitted through the fecal-oral route, often via contaminated drinking water or recreational water.
Health Effects
Infection with Cryptosporidium can lead to severe diarrhea, stomach cramps, dehydration, nausea, and vomiting. In immunocompromised individuals, the infection can be life-threatening.
Affected Organs
Common Sources
Understanding the Data
This data comes from your local water utility testing. The bar charts compare detected levels against EPA's Maximum Contaminant Level Goal (MCLG). Contaminants above the MCLG 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 Gahanna
Based on Gahanna's water quality data, these NSF-certified filters are recommended to remove contaminants above EPA MCLGs.
Whirlpool Corporation
W11256135
NSF Certified:
Capacity
1001 gal
Filter Life
3 mo
Flow Rate
0.7 gpm
Removes 19 contaminants:
1,2 Dichlorobenzene, 1,4 Dichlorobenzene, 2,4-D, Asbestos, Atrazine +14 more
Whirlpool Corporation
W11569861
NSF Certified:
Capacity
1001 gal
Filter Life
3 mo
Flow Rate
0.52 gpm
Removes 22 contaminants:
1,2 Dichlorobenzene, 1,2,4 Trichlorobenzene, 1,4 Dichlorobenzene, 2,4-D, Asbestos +17 more
Pentair Residential Filtration, LLC
Everpure Residential H-300-NXT
NSF Certified:
Capacity
3001 gal
Filter Life
10 mo
Flow Rate
0.5 gpm
Removes 5 contaminants:
Chlorine (Free), Chlorine (Total), Chlorine Dioxide, Cryptosporidium, Lead
Pentair Residential Filtration, LLC
Pentair GRO-2550
NSF Certified:
Daily Production
10.09 gpd
Removes 2 contaminants:
Cryptosporidium, Total Dissolved Solids
Verify Your Water Quality with Independent Testing
With 4 contaminants above EPA health guidelines, independent laboratory testing provides a second opinion and can track changes over time.
SimpleLab
Advanced Home Water Test
$369
Most comprehensive home water test including all standard tests plus additional parameters for ultimate peace of mind.
SimpleLab
Standard Home Water Test
$232
Comprehensive water analysis testing over 200 contaminants including bacteria, heavy metals, and chemical compounds.
Tap Score
Haloacetic Acids (HAA9) Test
$275
Tests for disinfection byproducts formed when chlorine reacts with organic matter in water treatment.
Frequently Asked Questions About Gahanna Tap Water
Gahanna's water has 4 contaminants above EPA MCLGs. 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 Gahanna's water.