Contaminants Detected
EXCEED GUIDELINES
Chromium (hexavalent)
Potential Effect: cancer
This Utility: 0.0639 ppb
No Legal Limit
3.2x
EWG's Health Guideline: 0.02 ppb
Chromium (hexavalent)
Chromium (hexavalent) is a carcinogen that commonly contaminates American drinking water. Chromium (hexavalent) in drinking water may be due to industrial pollution or natural occurrences in mineral deposits and groundwater. Read more about chromium (hexavalent).
Chromium (hexavalent) was found at 3.2 times above EWG's Health Guideline.
EWG Health Guideline
This Utility
National Average
State Average
Health Risks
The EWG Health Guideline of 0.02 ppb for chromium (hexavalent) was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.
Understanding the Data
The state and national averages were calculated using the averages of the contaminant measurements for each utility in 2013-2023.
ppb = parts per billionPollution Sources
Industry
Naturally Occurring
Filtering Options
Reverse Osmosis
Ion Exchange
Haloacetic acids (HAA9)
Potential Effect: cancer
This Utility: 6.18 ppb
No Legal Limit
103x
EWG's Health Guideline: 0.06 ppb
Haloacetic acids (HAA9)
Haloacetic acids are formed when disinfectants such as chlorine are added to tap water. The group of nine haloacetic acids includes monochloroacetic acid, dichloroacetic acid, trichloroacetic acid, monobromoacetic acid and dibromoacetic acid, which are regulated as a group by the federal government (HAA5); and bromochloroacetic acid, bromodichloroacetic acid, chlorodibromoacetic acid, and tribromoacetic acid.
Haloacetic acids (HAA9) was found at 103 times above EWG's Health Guideline.
EWG Health Guideline
This Utility
National Average
State Average
Health Risks
The EWG Health Guideline of 0.06 ppb for the group of nine haloacetic acids, or HAA9, was defined in a peer-reviewed scientific study by EWG and represents a one-in-a-million lifetime cancer risk level as . This health guideline protects against cancer.
Understanding the Data
The state and national averages were calculated using the averages of the contaminant measurements for each utility in 2018-2021.
ppb = parts per billionPollution Sources
Treatment Byproducts
Filtering Options
Activated Carbon
Reverse Osmosis
Perfluorooctanoic acid (PFOA)
Potential Effect: cancer
This Utility: 2.18 ppt
Proposed Legal Limit: 4 ppt
24x
EWG's Health Guideline: 0.09 ppt
Perfluorooctanoic acid (PFOA)
Perfluorooctanoic acid (PFOA) is a member of a group of perfluorinated chemicals used in many consumer products. PFOA and other perfluorinated chemicals can cause serious health effects, including cancer, endocrine disruption, accelerated puberty, liver and immune system damage, and thyroid changes. These chemicals are persistent in the environment and they accumulate in people. Click here to read more about perfluorinated chemicals.
Perfluorooctanoic acid (PFOA) was found at 24 times above EWG's Health Guideline.
EWG Health Guideline
This Utility
Proposed Legal Limit
National Average
State Average
Health Risks
The EWG Health Guideline of 0.09 ppt for PFOA was was defined by EPA's final toxicity value from the Office of Water’s Final Human Health Toxicity Assessment. This health guideline protects againat cardiovascular harm and harm to fetal growth.
Understanding the Data
The state and national averages were calculated using the averages of the contaminant measurements for each utility in 2013-2024.
ppt = parts per trillionPollution Sources
Industry
Runoff & Sprawl
Filtering Options
Activated Carbon
Reverse Osmosis
Uranium
Potential Effect: cancer
This Utility: 1.64 pCi/L
Legal Limit: 20 pCi/L
3.8x
EWG's Health Guideline: 0.43 pCi/L
Uranium
Uranium is a known human carcinogen. The federal legal limit for uranium is set at 30 micrograms per liter (corresponding to parts per billion), but utilities can also report uranium in picocuries per liter (pCi/L), which is a measure of radioactivity in water. EWG translated all uranium results to pCi/L using a conversion factor developed by the EPA. With this conversion approach, the limit of 30 ppb corresponds to 20 pCi/L. Drinking water with this much uranium would cause more than 4.6 cancer cases in a population of 100,000. California set a public health goal for uranium of 0.43 pCi/L.
Uranium was found at 3.8 times above EWG's Health Guideline.
EWG Health Guideline
This Utility
Legal Limit
National Average
State Average
Health Risks
The EWG Health Guideline of 0.43 pCi/L for uranium was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. Three most common uranium isotopes are U-234, U-235 and U-238. All isotopes of uranium are radioactive, and the total radioactivity depends on the ratio of isotopes. This health guideline protects against cancer.
Understanding the Data
The state and national averages were calculated using the averages of the contaminant measurements for each utility in 2018-2023.
pCi/L = picocuries per literPollution Sources
Industry
Naturally Occurring
Filtering Options
Reverse Osmosis
Ion Exchange
Includes chemicals detected in 2021-2023 for which annual utility averages exceeded an EWG-selected health guideline established by a federal or state public health authority; radiological contaminants detected between 2018 and 2023.
OTHER DETECTED
Bromochloromethane
This Utility: 0.0684 ppb
No Legal Limit
EWG's Health Guideline: 0.06 ppb
Bromochloromethane
Bromochloromethane is a tap water disinfection byproduct; it is also used as an intermediate in chemical manufacturing and as a fire extinguishing agent. Disinfection byproducts in drinking water increase the risk of cancer.
How your levels compare
EWG Health Guideline
This Utility
National Average
State Average
Health Risks
The EWG Health Guideline of 0.06 ppb for bromochloromethane was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer, harm to reproduction and child development, and change to fetal growth and development.
Understanding the Data
The state and national averages were calculated using the averages of the contaminant measurements for each utility in 2013-2023.
ppb = parts per billionPollution Sources
Industry
Treatment Byproducts
Filtering Options
Activated Carbon
Reverse Osmosis
Chlorate
This Utility: 74.5 ppb
No Legal Limit
EWG's Health Guideline: 210 ppb
Chlorate
Chlorate forms in drinking water as a byproduct of disinfection. Chlorate impairs thyroid function, making chlorate exposure most harmful during pregnancy and childhood.
How your levels compare
EWG Health Guideline
This Utility
National Average
State Average
Health Risks
The EWG Health Guideline of 210 ppb for chlorate was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against hormone disruption.
Understanding the Data
The state and national averages were calculated using the averages of the contaminant measurements for each utility in 2013-2023.
ppb = parts per billionPollution Sources
Agriculture
Industry
Treatment Byproducts
Manganese
This Utility: 30.3 ppb
No Legal Limit
EWG's Health Guideline: 100 ppb
Manganese
Manganese is a naturally occurring element that is common in food and drinking water. Excessive manganese exposures may impair children's attention, memory and intellectual capacity. Click here to read more about manganese.
How your levels compare
EWG Health Guideline
This Utility
National Average
State Average
Health Risks
The EWG Health Guideline of 100 ppb for manganese was defined by the state of Minnesota as a health risk limit, the concentration of a contaminant that can be consumed with little or no risk to health. This health guideline protects against harm to the brain and nervous system.
Understanding the Data
The state and national averages were calculated using the averages of the contaminant measurements for each utility in 2013-2023.
ppb = parts per billionPollution Sources
Industry
Naturally Occurring
Filtering Options
Ion Exchange
Perfluorohexanoic Acid (PFHxA)
This Utility: 0.733 ppt
No Legal Limit
EWG's Health Guideline: 1,000 ppt
Perfluorohexanoic Acid (PFHxA)
Perfluorohexanoic acid is a member of a group of perfluorinated chemicals used in many consumer products. Perfluorinated chemicals can cause serious health effects, including cancer, endocrine disruption, accelerated puberty, liver and immune system damage, and thyroid changes. These chemicals are persistent in the environment and they accumulate in people. Click here to read more about perfluorinated chemicals.
How your levels compare
EWG Health Guideline
This Utility
National Average
State Average
Health Risks
The EWG Health Guideline of 1,000 ppt for perfluorohexanoic acid was defined by EPA's toxicity value published in the Integrated Risk Information System's toxicological review. This health guideline protects against harm to fetal growth and child development.
Understanding the Data
The state and national averages were calculated using the averages of the contaminant measurements for each utility in 2018-2024.
ppt = parts per trillionPollution Sources
Industry
Runoff & Sprawl
Filtering Options
Activated Carbon
Reverse Osmosis
Perfluorooctane sulfonate (PFOS)
This Utility: 0.215 ppt
Proposed Legal Limit: 4 ppt
EWG's Health Guideline: 0.3 ppt
Perfluorooctane sulfonate (PFOS)
Perfluorooctane sulfonate (PFOS) is a member of a group of perfluorinated chemicals used in many consumer products. PFOS and other perfluorinated chemicals can cause serious health effects, including cancer, endocrine disruption, accelerated puberty, liver and immune system damage, and thyroid changes. These chemicals are persistent in the environment and they accumulate in people. Click here to read more about perfluorinated chemicals.
How your levels compare
EWG Health Guideline
This Utility
Proposed Legal Limit
National Average
State Average
Health Risks
The EWG Health Guideline of 0.3 ppt for PFOS was defined by EPA's final toxicity value from the Office of Water’s Final Human Health Toxicity Assessment. This health guideline protects againat cardiovascular harm and harm to fetal growth.
Understanding the Data
The state and national averages were calculated using the averages of the contaminant measurements for each utility in 2013-2024.
ppt = parts per trillionPollution Sources
Industry
Runoff & Sprawl
Filtering Options
Activated Carbon
Reverse Osmosis
Strontium
This Utility: 0.179 ppb
No Legal Limit
EWG's Health Guideline: 1,500 ppb
Strontium
Strontium is a metal that accumulates in the bones. Radioactive strontium-90 can cause bone cancer and leukemia, and any form of strontium at high doses can harm bone health.
How your levels compare
EWG Health Guideline
This Utility
National Average
State Average
Health Risks
The EWG Health Guideline of 1,500 ppb for strontium was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against harm to bones.
Understanding the Data
The state and national averages were calculated using the averages of the contaminant measurements for each utility in 2013-2023.
ppb = parts per billionPollution Sources
Industry
Naturally Occurring
Filtering Options
Reverse Osmosis
Ion Exchange
Includes chemicals detected in 2021-2023 for which annual utility averages were lower than an EWG-selected health guideline established by a federal or state public health authority.
Other Contaminants Tested
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| CONTAMINANTS ABOVE HEALTH GUIDELINES | activated carbon | reverse osmosis | ion exchange |
| Chromium (hexavalent) | |||
| Haloacetic acids (HAA9) | |||
| Perfluorooctanoic acid (PFOA) | |||
| Uranium, combined (pCi/L) | |||
| OTHER CONTAMINANTS DETECTED | activated carbon | reverse osmosis | ion exchange |
| Bromochloromethane | |||
| Chlorate | |||
| Manganese | |||
| Perfluorohexanoic Acid (PFHxA) | |||
| Perfluorooctane sulfonate (PFOS) | |||
| Strontium |