Lake Havasu
Mohave County, ArizonaView mapDirections
No nutrient or algae sampling on record from ADEQ for this lake.
- Impaired · Metals (other than mercury)
- Limited data
Lake Havasu in Mohave County, Arizona has water-quality measurements published by ADEQ, shown here as reported.
Lake Havasu is a lake in Mohave County, Arizona.
Source: EPA Water Quality Portal sampling records, ADEQ, last sampled 2026-03-26. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Lake Havasu is listed impaired under Clean Water Act §303(d) (IR 5) for metals (other than mercury). Check local advisories before you swim.
Whether Lake Havasu is safe to swim in today is a call for the Arizona Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lake Havasu
These are the measurements ADEQ publishes for Lake Havasu, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data.
Ask about Lake Havasu
Answers come straight from the public measurements and survey records on this page.
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Stays near Lake Havasu
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Fishing Lake Havasu
EPA Impairment Status
Lake Havasu is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life.
Source: EPA ATTAINS assessment unit AZL15030101-0590_00 · Official waterbody report
Nearby Lakes in Mohave County
Frequently asked questions about Lake Havasu
Where is Lake Havasu?
- Lake Havasu is a lake in Mohave County, Arizona. Its water-quality measurements are published by ADEQ and shown on this page as reported.
What is the water quality of Lake Havasu?
- Lake Havasu in Mohave County, Arizona has water-quality measurements published by ADEQ, shown here as reported.
Is Lake Havasu safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Lake Havasu is listed impaired under Clean Water Act §303(d) (IR 5) for metals (other than mercury). Check local advisories before you swim.
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Where this data comes from
5 measurements from 1 monitoring station, 2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Great Lakes Environmental Center
GLEC5 samples · 2026
Analytical methods
- 4500 P E ~ Phosphorus in Water by Colorimetry- Ascorbic Acid Method
- 300.0 ~ EPA; Determination of Inorganic Anions by Ion Chromatography
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database