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Not health advice. Contact your local water utility for concerns.
Data from EPA Water Quality Reports. For official information, contact your water utility or health department.
Water quality data for 4 cities serving 714,588 residents
Orange County in Florida has an average water quality score of 83/100 (Grade B) based on analysis of 4 municipal water systems. The county's water systems serve approximately 714,588 residents.
Overall, Orange County demonstrates good water quality standards. 2 of 4 cities exceed the county average, with Orlando leading with a score of 99/100.
4 cities ranked by water quality score
| Rank | City | Score | Grade | Population |
|---|---|---|---|---|
| 1 | Orlando Biggest deduction: 1 monitoring/reporting violation in the last 5 years (−1 pts) | 99 | A | 536,466 |
| 2 | Apopka Biggest deduction: PFOS detected at up to 24.8 ppt in UCMR5 sampling (2024-09-19), at or above EPA's 4 ppt MCL (−10 pts) | 87 | B | 71,917 |
| 3 | Winter Garden Biggest deduction: PFOA detected at up to 5.3 ppt in UCMR5 sampling (2024-08-08), at or above EPA's 4 ppt MCL (−10 pts) | 76 | C | 72,205 |
| 4 | Ocoee Biggest deduction: PFOA detected at up to 12 ppt in UCMR5 sampling (2024-07-10), at or above EPA's 4 ppt MCL (−10 pts) | 69 | D | 34,000 |
Real EPA readings across county water systems (lead: latest 90th percentile; PFAS: UCMR5 2023–2026; others: 2012–2019 averages)
| Contaminant | Avg Level | Max Level | EPA Limit | % of Limit | Cities |
|---|---|---|---|---|---|
| PFAS (PFOA/PFOS max, UCMR5) | 12.45 ppt | 24.8 ppt | 4 ppt | 311.3% | 4 |
| TTHM (2012–2019 avg) | 41.051 ug/L | 56.419 ug/L | 80 ug/L | 51.3% | 4 |
| HAA5 (2012–2019 avg) | 19.868 ug/L | 32.533 ug/L | 60 ug/L | 33.1% | 4 |
| Fluoride (2012–2019 avg) | 0.397 mg/L | 0.72 mg/L | 4 mg/L | 9.9% | 4 |
| Lead (90th percentile) | 1.275 ppb | 3.1 ppb | 15 ppb | 8.5% | 4 |
| Arsenic (2012–2019 avg) | 0.271 ug/L | 1.083 ug/L | 10 ug/L | 2.7% | 4 |
| Nitrate (2012–2019 avg) | 0.061 mg/L | 0.2 mg/L | 10 mg/L | 0.6% | 4 |
Recent violations across county water systems
Monitoring & reporting — Monitoring and Reporting (DBP) - Total Haloacetic Acids (HAA5)
6/30/2022
Monitoring & reporting — Monitoring and Reporting (DBP) - Total Haloacetic Acids (HAA5)
3/31/2019
Showing 10 of 12 recent violations
Water quality in Orange County, Florida reflects the region's unique combination of water sources, treatment infrastructure, and environmental factors. Our comprehensive analysis examines 4 municipal water systems serving a combined population of over 714,588 residents.
The county shows strong water quality performance, with scores ranging from 69/100 in Ocoee to 99/100 in Orlando. This 30-point spread indicates significant variation in water quality across the county, suggesting different water sources or treatment approaches.
The most prevalent contaminants detected across Orange County water systems include PFAS (PFOA/PFOS max, UCMR5), TTHM (2012–2019 avg), HAA5 (2012–2019 avg). At least one reading averages above 50% of its EPA limit across the county's systems, worth attention from residents and utilities.
Orange County's water quality is generally good. Residents can feel confident in their tap water quality, though those with specific health concerns or sensitivity to certain contaminants may still benefit from filtration. Regular review of your city's annual Consumer Confidence Report is recommended.
Orange County has an average water quality score of 83/100 (Grade B) based on analysis of 4 municipal water systems serving 714,588 residents.
Orlando has the highest water quality score in Orange County at 99/100. View the detailed report for Orlando.
Most cities in Orange County have water that meets EPA standards. However, a water filter can provide additional protection and improve taste. The need depends on your specific city and any personal health considerations.
Click on any city in the rankings table above to view its detailed water quality report, including contaminant levels, EPA compliance history, and filter recommendations.