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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 7 cities serving 1,134,518 residents
Sacramento County in California has an average water quality score of 86/100 (Grade A-) based on analysis of 7 municipal water systems. The county's water systems serve approximately 1,134,518 residents.
Overall, Sacramento County demonstrates good water quality standards. 5 of 7 cities exceed the county average, with Arden-Arcade leading with a score of 94/100.
7 cities ranked by water quality score
| Rank | City | Score | Grade | Population |
|---|---|---|---|---|
| 1 | Arden-Arcade Top concern: Total Trihalomethanes (21.8% of limit) | 94 | A | 97,722 |
| 2 | Citrus Heights Top concern: Total Trihalomethanes (36% of limit) | 87 | A- | 90,588 |
| 3 | Sacramento Top concern: Total Trihalomethanes (21.1% of limit) | 86 | A- | 523,908 |
| 4 | Elk Grove Top concern: Haloacetic Acids (22.1% of limit) | 86 | A- | 177,400 |
| 5 | Carmichael Top concern: Haloacetic Acids (19.1% of limit) | 86 | A- | 82,559 |
| 6 | Rancho Cordova Top concern: Fluoride (17% of limit) | 84 | B+ | 80,392 |
| 7 | Folsom Top concern: Fluoride (14% of limit) | 80 | B+ | 81,949 |
Top detected contaminants across county water systems
| Contaminant | Avg Level | Max Level | EPA Limit | % of Limit | Cities |
|---|---|---|---|---|---|
| Total Trihalomethanes | 15.037 ug/L | 28.77 ug/L | 80 ug/L | 18.8% | 7 |
| Fluoride | 0.676 mg/L | 0.766 mg/L | 4 mg/L | 16.9% | 7 |
| Haloacetic Acids | 9.232 ug/L | 14.885 ug/L | 60 ug/L | 15.4% | 5 |
| Nitrite | 0.102 mg/L | 0.278 mg/L | 1 mg/L | 10.2% | 7 |
| Mercury | 0 mg/L | 0 mg/L | 0.002 mg/L | 10% | 7 |
| Chromium | 0.009 mg/L | 0.015 mg/L | 0.1 mg/L | 8.9% | 5 |
| Nitrate | 0.849 mg/L | 1.356 mg/L | 10 mg/L | 8.5% | 7 |
| Lead | 0.001 mg/L | 0.003 mg/L | 0.015 mg/L | 8.4% | 7 |
Recent violations across county water systems
Water quality in Sacramento County, California reflects the region's unique combination of water sources, treatment infrastructure, and environmental factors. Our comprehensive analysis examines 7 municipal water systems serving a combined population of over 1,134,518 residents.
The county shows strong water quality performance, with scores ranging from 80/100 in Folsom to 94/100 in Arden-Arcade. This 14-point spread indicates relatively consistent water quality standards across municipal systems.
The most prevalent contaminants detected across Sacramento County water systems include Total Trihalomethanes, Fluoride, Haloacetic Acids. All monitored contaminants remain within acceptable levels relative to EPA Maximum Contaminant Levels (MCLs).
Sacramento 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.
Sacramento County has an average water quality score of 86/100 (Grade A-) based on analysis of 7 municipal water systems serving 1,134,518 residents.
Arden-Arcade has the highest water quality score in Sacramento County at 94/100. View the detailed report for Arden-Arcade.
Most cities in Sacramento 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.