Lake Washington
Brevard County, FloridaView mapDirections
Florida DEP publishes the water-quality measurements for Lake Washington. Here is what has been measured.
- Impaired · Impaired biota (cause unknown)
- Limited data
Lake Washington in Brevard County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 0.8 ft visibility. Phosphorus: 165 µg/L.
Lake Washington is a lake in Brevard County, Florida. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2022-08-23. Methodology: how these readings are compared.
Vrbo is where to look for cabins and lake homes around Lake Washington, and Booking.com and Expedia search hotels near the lake for your dates.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Lake Washington is listed impaired under Clean Water Act §303(d) (IR 5) for impaired biota (cause unknown), mercury. Check local advisories before you swim.
Whether Lake Washington is safe to swim in today is a call for the Florida Department of Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lake Washington
These are the measurements Florida DEP publishes for Lake Washington, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 0.8 ft of visibility. Phosphorus 165 µg/L. TSI 79.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 0.8ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 165µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 79 | Hypereutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Very high nutrients, dense algae, poor clarity
Ask about Lake Washington
Answers come straight from the public measurements and survey records on this page.
Stays via Stay22
Stays near Lake Washington
Compare lakeside cabins, hotels, and vacation rentals near Lake Washington in Brevard County, Florida — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Lake Washington
Prices for Oct 16–18, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a whole trip? See where to stay at Florida’s top lakes →
Follow Lake Washington’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Lake Washington
Water Quality Trend: Improving
Based on 5 years of monitoring (2020–2024).
Water clarity
Improving5 years
Phosphorus
Improving-22.11 µg/L/yr5 years
EPA Impairment Status
Lake Washington is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life, Fish consumption.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL2893O · Official waterbody report
Nearby Lakes in Brevard County
Frequently asked questions about Lake Washington
Where is Lake Washington?
- Lake Washington is a lake in Brevard County, Florida. Its water-quality measurements are published by Florida DEP and shown on this page as reported.
What is the water quality of Lake Washington?
- Lake Washington in Brevard County, Florida has water-quality measurements published by Florida DEP, shown here as reported. Water clarity: 0.8 ft visibility. Phosphorus: 165 µg/L.
Is Lake Washington safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Lake Washington is listed impaired under Clean Water Act §303(d) (IR 5) for impaired biota (cause unknown), mercury. Check local advisories before you swim.
Explore Lake Washington across LakeQuality
More lakes in Florida
Other Lakes in Florida
Hypereutrophic Lakes in Florida
Where this data comes from
4 measurements from 2 monitoring stations, 2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples4 samples · 2022
Monitoring station identifiers (2)
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