Lake Valrico Middle
Lake Valrico Middle in Hillsborough County, Florida has a water quality grade of D (Nutrient-rich). Phosphorus: 112 µg/L.
- Typical in August
- 85°F
- Type
- Hypereutrophic
- Trend
- → Stable
Grade D measures nutrients and algae, not whether this is a good place for a cabin trip. Cabins and rentals near Lake Valrico Middle →
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Lake Valrico Middle is a highly nutrient-loaded hypereutrophic lake in Hillsborough County, Florida. Water quality is graded D based on 1 sampling years through 2025. Water clarity is improving over recent sampling years. Compared to the 123 other monitored lakes in Hillsborough County, Lake Valrico Middle ranks #116 for water quality.
Source: EPA Water Quality Portal sampling records, FDEP, last sampled 2025-09-09. Grade methodology: LakeQuality methodology.
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Swimming Safety
Grade onlyBacteria A
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.
Based on E. coli testing, Lake Valrico Middle never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 27 samples across 7 seasons.
This is a historical summary of past testing, not a current condition — bacteria levels change quickly, especially after rain. Always check Florida’s current beach and health-department advisories before swimming.
Water Quality Grade: D (Nutrient-rich)
No clarity data. Phosphorus level: 112 µg/L. Trophic State Index: 72.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 112 µg/L | Poor |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 72 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Lake Valrico Middle
Compare lakeside cabins, hotels, and vacation rentals near Lake Valrico Middle in Hillsborough 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. The water-quality grade measures nutrients and algae, not lodging — cabins and rentals around Lake Valrico Middle are listed below.
Top-rated places to stay near Lake Valrico Middle
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Planning a whole trip? See where to stay at Florida’s top lakes →
Water Temperature
Lake Valrico Middle typically sits around 85°F at the surface in August. Summer average is about 86°F. Usually warmest in Jul (about 87°F) and coldest in Feb (about 58°F). These are typical values by month — not a live reading.
Typical surface water temperature by month, from 39 field readings (2010–2025) via the EPA Water Quality Portal. See the full Lake Valrico Middle water temperature breakdown →
Fishing Lake Valrico Middle
Water Quality Trend: → Stable
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.607 m/yr | 3 |
| Phosphorus | ↓ Declining | +8.69 µg/L/yr | 6 |
EPA Impairment Status
Lake Valrico Middle 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 FL1547A · Official waterbody report · Matched by proximity (0.11 km)
Regulated Pollution Sources Nearby
1 EPA-permitted facility operate within about 5 miles of Lake Valrico Middle under Clean Water Act (NPDES) discharge permits, including 1 classified by the EPA as major discharger. 1 facility has a reported Clean Water Act violation in the past three years.
- Valrico AwwtfDover · 1.8 mi away · NPDES FL0040983MajorRecent violation
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
County Ranking
Ranked #116 of 124 lakes in Hillsborough County
Nearby Lakes With Higher Grades
Lake Valrico Middle holds Grade D. 2 nearby lakes hold higher nutrient-and-algae grades — useful for a swim day, not a reason to skip lodging here.
See full comparison →Nearby Lakes in Hillsborough County
Frequently asked questions about Lake Valrico Middle
Where is Lake Valrico Middle?
- Lake Valrico Middle is a lake in Hillsborough County, Florida. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Lake Valrico Middle?
- Lake Valrico Middle in Hillsborough County, Florida has a water quality grade of D (Nutrient-rich). Phosphorus: 112 µg/L.
Is Lake Valrico Middle safe to swim in?
- Based on E. coli testing, Lake Valrico Middle never exceeded the EPA safe-swimming threshold (235 MPN/100mL) — on 0% of 27 samples across 7 seasons. That works out to a bacteria swim-safety grade of A — a historical summary of past testing, not a current reading. Lake Valrico Middle has a water quality grade of D (Nutrient-rich). Bacteria levels can spike quickly after heavy rain, so always check Florida's current beach and health-department advisories before you swim.
What is the water temperature of Lake Valrico Middle?
- Lake Valrico Middle typically sits around 85°F at the surface in August, from 39 EPA Water Quality Portal field readings (2010–2025). That is a typical value for the month, not a live reading.
Explore Lake Valrico Middle across LakeQuality
More Florida Lake Rankings
Other Grade D Lakes in Florida
Hypereutrophic Lakes in Florida
Where this data comes from
24 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Submitting organization not recorded for these samples24 samples · 2020–2025
Monitoring station identifiers (1)
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
Regulated discharger data from EPA ECHO (ICIS-NPDES)