Avalon State Park Water Quality
St. Lucie County, Florida
Advisory
Health advisory: the state advises against swimming here until a retest comes back clean.
- Latest test
- Oct 28, 2026 (8 days ago)
- Enterococci
- 111 per 100 mL
- Past 12 months
- 18 of 20 tests Good, 2 Poor
Results over time
Recent tests
| Date | Enterococci per 100 mL | Rating |
|---|---|---|
| Oct 28, 2026 | 111 | Poor Advisory |
| Oct 26, 2026 | 600 | Poor |
| Oct 12, 2026 | 10 | Good |
| Sep 28, 2026 | 10 | Good |
| Sep 14, 2026 | 10 | Good |
| Aug 31, 2026 | 10 | Good |
| Aug 17, 2026 | 10 | Good |
| Aug 3, 2026 | 10 | Good |
| Jul 20, 2026 | 20 | Good |
| Jul 13, 2026 | 10 | Good |
| Jul 7, 2026 | 10 | Good |
| Jun 29, 2026 | 10 | Good |
| Jun 22, 2026 | 10 | Good |
| Jun 15, 2026 | 10 | Good |
| Jun 8, 2026 | 10 | Good |
| Jun 1, 2026 | 10 | Good |
The long view
The state has 20 tests on record for Avalon State Park over 1 year, starting May 2026. In the last 10 years, 2 tests of 20 (10%) came back Poor, above the rate for all Florida sampled beaches (6.1%). Bacteria levels usually jump after heavy rain, when stormwater washes to the shore, and drop again within a day or two.
Nearby sampled beaches
- Round Island Beach ParkIndian River County · Tested Oct 12 · 20 per 100 mL · 1.6 miGood
- Pepper ParkSt. Lucie County · Tested Oct 28 · 99 per 100 mL · 3.3 miAdvisory
- Little Jim BridgeSt. Lucie County · Tested Oct 28 · 20 per 100 mL · 4.2 miGood
- Fort Pierce Inlet State Park - AtlanticSt. Lucie County · No tests on record · 4.7 miNo recent test
- Fort Pierce Inlet State Park - RiverSt. Lucie County · Tested Jun 15 · 20 per 100 mL · 5.0 miNo recent test
- Jetty Park BeachSt. Lucie County · Tested Oct 28 · 10 per 100 mL · 5.1 miGood
About this site
Sampling site AVALON STATE PARK (St. Lucie County, EPA beach ID ), at 27.53874, -80.31589. Results are from the Florida Department of Health's Healthy Beaches Program; years before 2026 come from the state's submissions to EPA's Water Quality Portal.