Red Mountain Lake
Maricopa County, ArizonaView mapDirections
No nutrient or algae sampling on record from ADEQ for this lake.
- Limited data
Red Mountain Lake in Maricopa County, Arizona has water-quality measurements published by ADEQ, shown here as reported.
Red Mountain Lake is a lake in Maricopa County, Arizona.
Source: EPA Water Quality Portal sampling records, ADEQ, last sampled 2026-04-09. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Red Mountain Lake 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 Red Mountain Lake
These are the measurements ADEQ publishes for Red Mountain Lake, 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 Red Mountain Lake
Answers come straight from the public measurements and survey records on this page.
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Fishing Red Mountain Lake
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Frequently asked questions about Red Mountain Lake
Where is Red Mountain Lake?
- Red Mountain Lake is a lake in Maricopa County, Arizona. Its water-quality measurements are published by ADEQ and shown on this page as reported.
What is the water quality of Red Mountain Lake?
- Red Mountain Lake in Maricopa County, Arizona has water-quality measurements published by ADEQ, shown here as reported.
Is Red Mountain Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
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Where this data comes from
3 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
GLEC3 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.