Orange-William Davis Lake
Orange-William Davis Lake in Orange County, Florida has a water quality grade of B (Good). Water clarity: 10.5 ft visibility. Phosphorus: 12 µg/L.
- Clarity
- 10.5 ft
- Type
- Mesotrophic
- Trend
- ↓ Declining
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Orange-William Davis Lake is a mesotrophic lake in Orange County, Florida. Water quality is graded B based on 1 sampling years through 2022. Overall water quality is declining over recent sampling years. Compared to the 319 other monitored lakes in Orange County, Orange-William Davis Lake ranks #242 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2022-07-19. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Good for swimming, clear water with low algae levels
Water Quality Grade: B (Good)
Good clarity, visible to about 10.5 ft. Phosphorus level: 12 µg/L. Trophic State Index: 42.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 10.5 ft | Not graded |
| Phosphorus | 12 µg/L | Good |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 42 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Orange-William Davis Lake
Compare lakeside cabins, hotels, and vacation rentals near Orange-William Davis Lake in Orange 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 Orange-William Davis Lake
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Fishing Orange-William Davis Lake
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -1.44 m/yr | 5 |
| Phosphorus | ↓ Declining | +1.6 µg/L/yr | 5 |
EPA Impairment Status
Orange-William Davis Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit FL3170Q · Official waterbody report · Matched by proximity (1.95 km)
County Ranking
Ranked #242 of 320 lakes in Orange County
Nearby Lakes in Orange County
Frequently asked questions about Orange-William Davis Lake
Where is Orange-William Davis Lake?
- Orange-William Davis Lake is a lake in Orange County, Florida. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Orange-William Davis Lake?
- Orange-William Davis Lake in Orange County, Florida has a water quality grade of B (Good). Water clarity: 10.5 ft visibility. Phosphorus: 12 µg/L.
Is Orange-William Davis Lake safe to swim in?
- Good for swimming, clear water with low algae levels. Orange-William Davis Lake has a water quality grade of B (Good). Always check local health department advisories before swimming.
Explore Orange-William Davis Lake across LakeQuality
More Florida Lake Rankings
Other Grade B Lakes in Florida
Mesotrophic Lakes in Florida
Where this data comes from
6 measurements from 3 monitoring stations, 2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- FLORIDA LAKEWATCH
21FLKWAT_WQX6 samples · 2022
Monitoring station identifiers (3)
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