City of Lake Havasu

EWG's drinking water quality report shows results of tests conducted by the water utility and provided to the Environmental Working Group by the Arizona Department of Environmental Quality, as well as information from the U.S. EPA Enforcement and Compliance History database (ECHO). For the latest quarter assessed by the EPA (July 2018 - September 2018), tap water provided by this water utility was in compliance with federal health-based drinking water standards.

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5

contaminants detected above health guidelines

6

other detected contaminants

Includes chemicals detected in 2015 for which annual utility averages exceeded an EWG-selected health guideline established by a federal or state public health authority; chemicals detected under the EPA's Unregulated Contaminant Monitoring Rule (UCMR 3) program in 2013 to 2015, for which annual utility averages exceeded a health guideline established by a federal or state public health authority; radiological contaminants detected between 2010 and 2015.

Arsenic
cancer✕
Arsenic is a potent carcinogen and common contaminant in drinking water. Arsenic causes thousands of cases of cancer each year in the U.S. Click here to read more about arsenic.

STATE

NATIONAL

THIS UTILITY

How your levels compare

HEALTH GUIDELINE:
0.004 ppb

LEGAL LIMIT:
10 ppb

1.29 ppb

5.01 ppb

6.33 ppb

The State and National averages were calculated using the averages of the contaminant measurements for each utility in 2015.
ppb = parts per billion.
Health risks of arsenic in excess of health guideline
The health guideline of 0.004 ppb for arsenic 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.

Testing summary by quarter

NOT TESTED

NOT DETECTED

DETECTED

ABOVE HEALTH GUIDELINE

ABOVE LEGAL LIMIT

Utility Average 2015: 6.33 ppb

Health Guideline Exceeded 2015: Yes

Legal Limit Exceeded 2015: No

Utility
Average
2015 Health
Guideline
Exceeded
2015 Legal
Limit
Exceeded
2015 2010 2011 2012 2013 2014 2015

6.33 ppb Yes No
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MORE ABOUT THIS CONTAMINANT

Chromium (hexavalent)
cancer✕
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).

STATE

NATIONAL

THIS UTILITY

How your levels compare

HEALTH GUIDELINE:
0.02 ppb

0.789 ppb

4.59 ppb

1.40 ppb

The State and National averages were calculated using the averages of the contaminant measurements for each utility in 2010-2015.
ppb = parts per billion.
Health risks of chromium (hexavalent) in excess of health guideline
The 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.

Testing summary by quarter

NOT TESTED

NOT DETECTED

DETECTED

ABOVE HEALTH GUIDELINE

Utility Average 2010-2015: 1.40 ppb

Health Guideline Exceeded 2010-2015: Yes

Legal Limit Exceeded 2010-2015: No

Utility
Average
2010-2015 Health
Guideline
Exceeded
2010-2015 Legal
Limit
Exceeded
2010-2015 2010 2011 2012 2013 2014 2015

1.40 ppb Yes No
MORE TESTING DATA FOR THIS CONTAMINANT
MORE ABOUT THIS CONTAMINANT

Nitrate
cancer✕
Nitrate, a fertilizer chemical, frequently contaminates drinking water due to agricultural and urban runoff, and discharges from municipal wastewater treatment plants and septic tanks. Excessive nitrate in water can cause oxygen deprivation in infants and increase the risk of cancer. Click here to read more about nitrate.

STATE

NATIONAL

THIS UTILITY

How your levels compare

HEALTH GUIDELINE:
0.14 ppm

LEGAL LIMIT:
10 ppm

1.01 ppm

2.12 ppm

1.000 ppm

The State and National averages were calculated using the averages of the contaminant measurements for each utility in 2015.
ppm = parts per million.
Health risks of nitrate in excess of health guideline
The health guideline of 0.14 ppm for nitrate was defined in a peer-reviewed scientific study by EWG and corresponds to one-in-one-million annual cancer risk level.

Testing summary by quarter

NOT TESTED

NOT DETECTED

DETECTED

ABOVE HEALTH GUIDELINE

ABOVE LEGAL LIMIT

Utility Average 2015: 1.000 ppm

Health Guideline Exceeded 2015: Yes

Legal Limit Exceeded 2015: No

Utility
Average
2015 Health
Guideline
Exceeded
2015 Legal
Limit
Exceeded
2015 2010 2011 2012 2013 2014 2015

1.000 ppm Yes No
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MORE ABOUT THIS CONTAMINANT

Radiological contaminants
cancer✕
This utility detected Radium, combined (-226 & -228), Radium-226, Radium-228 & Uranium.
Radiological contaminants leach into water from certain minerals and from mining. Drinking water contamination with radioactive substances increases the risk of cancer and may harm fetal development.

Total trihalomethanes (TTHMs)
cancer✕
Trihalomethanes are cancer-causing contaminants that form during water treatment with chlorine and other disinfectants. The total trihalomethanes group includes four chemicals: chloroform, bromodichloromethane, dibromochloromethane and bromoform.

STATE

NATIONAL

THIS UTILITY

How your levels compare

HEALTH GUIDELINE:
0.8 ppb

LEGAL LIMIT:
80 ppb

23.6 ppb

13.7 ppb

65.6 ppb

The State and National averages were calculated using the averages of the contaminant measurements for each utility in 2015.
ppb = parts per billion.
Health risks of trihalomethanes in excess of health guideline
The health guideline of 0.8 ppb for trihalomethanes was defined by the California Office of Environmental Health Hazard Assessment as a draft public health goal, the level of drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

Testing summary by quarter

NOT TESTED

NOT DETECTED

DETECTED

ABOVE HEALTH GUIDELINE

ABOVE LEGAL LIMIT

Utility Average 2015: 65.6 ppb

Health Guideline Exceeded 2015: Yes

Legal Limit Exceeded 2015: No

Utility
Average
2015 Health
Guideline
Exceeded
2015 Legal
Limit
Exceeded
2015 2010 2011 2012 2013 2014 2015

65.6 ppb Yes No
MORE TESTING DATA FOR THIS CONTAMINANT
MORE ABOUT THIS CONTAMINANT

Includes chemicals detected in 2015 for which annual utility averages were lower than an EWG-selected health guideline established by a federal or state public health authority; chemicals detected under the EPA's Unregulated Contaminant Monitoring Rule (UCMR 3) program in 2013 to 2015, for which annual utility averages were lower than an EWG-selected health guideline established by a federal or state public health authority.

1,4-Dioxane
✕
1,4-Dioxane is a solvent classified by the EPA as a likely human carcinogen. It contaminates groundwater in many states due to industrial wastewater discharges, plastic manufacturing runoff and landfill runoff.

STATE

NATIONAL

THIS UTILITY

How your levels compare

HEALTH GUIDELINE:
0.35 ppb

0.0480 ppb

0.0151 ppb

0.0835 ppb

The State and National averages were calculated using the averages of the contaminant measurements for each utility in 2010-2015.
ppb = parts per billion.
Health risks of 1,4-dioxane in excess of health guideline
The health guideline of 0.35 ppb for 1,4-dioxane was defined by the Environmental Protection Agency as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

Testing summary by quarter

NOT TESTED

NOT DETECTED

DETECTED

ABOVE HEALTH GUIDELINE

Utility Average 2010-2015: 0.0835 ppb

Health Guideline Exceeded 2010-2015: No

Legal Limit Exceeded 2010-2015: No

Utility
Average
2010-2015 Health
Guideline
Exceeded
2010-2015 Legal
Limit
Exceeded
2010-2015 2010 2011 2012 2013 2014 2015

0.0835 ppb No No
MORE TESTING DATA FOR THIS CONTAMINANT
MORE ABOUT THIS CONTAMINANT

Chromium (total)
✕
Chromium is a naturally occurring metal, but industrial uses can elevate its levels in water. One form, hexavalent chromium, causes cancer. Total chromium is not a good indicator of the amount of hexavalent chromium in drinking water.

STATE

NATIONAL

THIS UTILITY

How your levels compare

LEGAL LIMIT:
100 ppb

0.631 ppb

4.43 ppb

1.38 ppb

The State and National averages were calculated using the averages of the contaminant measurements for each utility in 2010-2015.
ppb = parts per billion.

Testing summary by quarter

NOT TESTED

NOT DETECTED

DETECTED

ABOVE LEGAL LIMIT

Utility Average 2010-2015: 1.38 ppb

Health Guideline Exceeded 2010-2015: No

Legal Limit Exceeded 2010-2015: No

Utility
Average
2010-2015 Health
Guideline
Exceeded
2010-2015 Legal
Limit
Exceeded
2010-2015 2010 2011 2012 2013 2014 2015

1.38 ppb No No
MORE TESTING DATA FOR THIS CONTAMINANT
MORE ABOUT THIS CONTAMINANT

Haloacetic acids (HAA5)
✕
Haloacetic acids are formed when disinfectants such as chlorine are added to tap water. The group of five haloacetic acids regulated by federal standards includes monochloroacetic acid, dichloroacetic acid, trichloroacetic acid, monobromoacetic acid and dibromoacetic acid.

STATE

NATIONAL

THIS UTILITY

How your levels compare

LEGAL LIMIT:
60 ppb

12.7 ppb

3.03 ppb

13.7 ppb

The State and National averages were calculated using the averages of the contaminant measurements for each utility in 2015.
ppb = parts per billion.

Testing summary by quarter

NOT TESTED

NOT DETECTED

DETECTED

ABOVE LEGAL LIMIT

Utility Average 2015: 13.7 ppb

Health Guideline Exceeded 2015: No

Legal Limit Exceeded 2015: No

Utility
Average
2015 Health
Guideline
Exceeded
2015 Legal
Limit
Exceeded
2015 2010 2011 2012 2013 2014 2015

13.7 ppb No No
MORE TESTING DATA FOR THIS CONTAMINANT
MORE ABOUT THIS CONTAMINANT

Molybdenum
✕
Molybdenum is a metal that occurs naturally in soil, minerals and water. People who ingest large amounts can have increased levels of uric acid and gout-like symptoms.

STATE

NATIONAL

THIS UTILITY

How your levels compare

HEALTH GUIDELINE:
40 ppb

1.67 ppb

3.28 ppb

6.43 ppb

The State and National averages were calculated using the averages of the contaminant measurements for each utility in 2010-2015.
ppb = parts per billion.
Health risks of molybdenum in excess of health guideline
The health guideline of 40 ppb for molybdenum was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against metabolic changes and excess formation of uric acid in the blood.

Testing summary by quarter

NOT TESTED

NOT DETECTED

DETECTED

ABOVE HEALTH GUIDELINE

Utility Average 2010-2015: 6.43 ppb

Health Guideline Exceeded 2010-2015: No

Legal Limit Exceeded 2010-2015: No

Utility
Average
2010-2015 Health
Guideline
Exceeded
2010-2015 Legal
Limit
Exceeded
2010-2015 2010 2011 2012 2013 2014 2015

6.43 ppb No No
MORE TESTING DATA FOR THIS CONTAMINANT
MORE ABOUT THIS CONTAMINANT

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.

STATE

NATIONAL

THIS UTILITY

How your levels compare

HEALTH GUIDELINE:
1,500 ppb

329.6 ppb

992.7 ppb

1,350.0 ppb

The State and National averages were calculated using the averages of the contaminant measurements for each utility in 2010-2015.
ppb = parts per billion.
Health risks of strontium in excess of health guideline
The 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.

Testing summary by quarter

NOT TESTED

NOT DETECTED

DETECTED

ABOVE HEALTH GUIDELINE

Utility Average 2010-2015: 1,350.0 ppb

Health Guideline Exceeded 2010-2015: No

Legal Limit Exceeded 2010-2015: No

Utility
Average
2010-2015 Health
Guideline
Exceeded
2010-2015 Legal
Limit
Exceeded
2010-2015 2010 2011 2012 2013 2014 2015

1,350.0 ppb No No
MORE TESTING DATA FOR THIS CONTAMINANT
MORE ABOUT THIS CONTAMINANT

Vanadium
✕
Vanadium is a metal used in steels and other alloys. People are commonly exposed to vanadium in water and food. Excessive exposure can be toxic during pregnancy and childhood.

STATE

NATIONAL

THIS UTILITY

How your levels compare

HEALTH GUIDELINE:
21 ppb

2.11 ppb

7.42 ppb

0.888 ppb

The State and National averages were calculated using the averages of the contaminant measurements for each utility in 2010-2015.
ppb = parts per billion.
Health risks of vanadium in excess of health guideline
The health guideline of 21 ppb for vanadium was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against change in blood chemistry.

Testing summary by quarter

NOT TESTED

NOT DETECTED

DETECTED

ABOVE HEALTH GUIDELINE

Utility Average 2010-2015: 0.888 ppb

Health Guideline Exceeded 2010-2015: No

Legal Limit Exceeded 2010-2015: No

Utility
Average
2010-2015 Health
Guideline
Exceeded
2010-2015 Legal
Limit
Exceeded
2010-2015 2010 2011 2012 2013 2014 2015

0.888 ppb No No
MORE TESTING DATA FOR THIS CONTAMINANT
MORE ABOUT THIS CONTAMINANT

Want to filter these contaminants out?

Pollution sources

Click on each pollution source to see from which source contaminants come.

Agriculture

2

Industry

11

Treatment
byproducts

2

Runoff &
sprawl

2

Naturally
occuring

11

Arsenic
Nitrate

Arsenic
Chromium (total)
Strontium
Chromium (hexavalent)
Molybdenum
Vanadium
1,4-Dioxane
Radium, combined (-226 & -228)
Radium-226
Radium-228
Uranium

Arsenic
Chromium (total)
Nitrate
Strontium
Chromium (hexavalent)
Molybdenum
Vanadium
Radium, combined (-226 & -228)
Radium-226
Radium-228
Uranium

Nitrate
1,4-Dioxane

Haloacetic acids (HAA5)
Total trihalomethanes (TTHMs)
Specific water contaminants can come from more than one source.

City of Lake Havasu compliance with legally mandated federal standards

From October 2015 to September 2018, City of Lake Havasu complied with health-based drinking water standards.

5 QUARTERS
in violation of any federal drinking water standard from October 2015 to September 2018
Over the last 3 years this water utility has spent
1 QUARTER
in significant violation of federal drinking water standards

Information in this section on City of Lake Havasu comes from the U.S. EPA Enforcement and Compliance History Online database. Click here for more information for this utility.

Other contaminants tested
✕

Contaminants detected between 2010 and 2014 and were not part of EPA's UCMR-3 testing program:

Barium, Fluoride, Nitrate and nitrite

Chemicals tested for but not detected from 2010 to 2015:

1,1,1-Trichloroethane, 1,1,2-Trichloroethane, 1,1-Dichloroethane, 1,1-Dichloroethylene, 1,2,3-Trichloropropane, 1,2,4-Trichlorobenzene, 1,2-Dibromo-3-chloropropane (DBCP), 1,2-Dichloroethane, 1,2-Dichloropropane, 1,3-Butadiene, 2,3,7,8-TCDD (Dioxin), 2,4,5-TP (Silvex), 2,4-D, Alachlor (Lasso), Antimony, Asbestos, Atrazine, Benzene, Benzo[a]pyrene, Beryllium, Bromochloromethane, Bromomethane, Cadmium, Carbofuran, Carbon tetrachloride, Chlorate, Chlordane, Chlorodifluoromethane, Chloromethane, cis-1,2-Dichloroethylene, Cobalt, Cyanide, Dalapon, Di(2-ethylhexyl) adipate, Di(2-ethylhexyl) phthalate, Dichloromethane (methylene chloride), Dinoseb, Diquat, Endothall, Endrin, Ethylbenzene, Ethylene dibromide, Glyphosate, Heptachlor, Heptachlor epoxide, Hexachlorobenzene (HCB), Hexachlorocyclopentadiene, Lindane, Mercury (inorganic), Methoxychlor, Monochlorobenzene (chlorobenzene), Nitrite, o-Dichlorobenzene, Oxamyl (Vydate), p-Dichlorobenzene, Pentachlorophenol, Perfluorobutane sulfonate (PFBS), Perfluoroheptanoic acid (PFHPA), Perfluorohexane sulfonate (PFHXS), Perfluorononanoic acid (PFNA), Perfluorooctane sulfonate (PFOS), Perfluorooctanoic acid (PFOA), Picloram, Polychlorinated biphenyls (PCBs), Selenium, Simazine, Styrene, Tetrachloroethylene (perchloroethylene), Thallium, Toluene, Toxaphene, trans-1,2-Dichloroethylene, Trichloroethylene, Vinyl chloride, Xylenes (total)