Lake Washington
Lake Washington in Brevard County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 0.8 ft visibility. Phosphorus: 165 µg/L.
- Clarity
- 0.8 ft
- Trend
- ↑ Improving
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Why Lake Washington has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Lake Washington, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded water clarity and phosphorus, but not algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by FDEP and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
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. Grade methodology: LakeQuality methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Lake Washington
These readings exist but are not enough for an A–F grade — see why.
Very murky, less than 0.8 ft of visibility. Phosphorus level: 165 µg/L. Trophic State Index: 79.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.8 ft | Not graded |
| Phosphorus | 165 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 79 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay 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
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Fishing Lake Washington
Water Quality Trend: ↑ Improving
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.134 m/yr | 5 |
| Phosphorus | ↑ Improving | -22.11 µg/L/yr | 5 |
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
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL2893O · Official waterbody report
Graded lakes near Lake Washington
Lake Washington has no grade, but these lakes within a short drive do.
Nearby Lakes in Brevard County
Frequently asked questions about Lake Washington
Where is Lake Washington?
- Lake Washington is a lake in Brevard County, Florida. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Lake Washington?
- Lake Washington in Brevard County, Florida is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 0.8 ft visibility. Phosphorus: 165 µg/L.
Is Lake Washington safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Lake Washington is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
Explore Lake Washington across LakeQuality
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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)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database