Is Tap Water Safe to Drink in Santa Ana?
Yes, tap water in Santa Ana is safe to drink. Most of it is groundwater from the well-managed Orange County basin, supplemented by imported supply, and it meets all EPA and California standards.
Water Source
The City of Santa Ana pumps the large majority of its supply from the Orange County Groundwater Basin, managed and replenished by the Orange County Water District (including purified recycled water via the Groundwater Replenishment System), with imported Metropolitan Water District supply making up the balance.
EPA Compliance Status
Meets all federal Safe Drinking Water Act standards and California's stricter state requirements. PFAS detected in parts of the regional basin is addressed through well management and treatment coordinated with the Orange County Water District.
Notable Contaminants & Context
- •PFAS compounds in parts of the Orange County basin are monitored under the EPA's national rule; affected wells regionally have been treated or idled
- •Trace disinfection byproducts are monitored and compliant
- •Basin water carries moderate natural mineral content; imported Colorado River water adds hardness to the blend
Water Quality Data
Key contaminants detected vs. regulatory limits. All values from the most recent published report — Source: City of Santa Ana Water Resources 2024 CCR.
| Contaminant | Detected | Limit | Status |
|---|---|---|---|
| Chlorine (total) | 1.0 mg/L | 4.0 mg/L | ✓ |
| Fluoride | 0.71 mg/L | 4.0 mg/L | ✓ |
| Lead (90th percentile) | 2.1 µg/L | 15.0 µg/L | ✓ |
| Nitrate (as N) | 3.2 mg/L | 10.0 mg/L | ✓ |
| TTHM (Total Trihalomethanes) | 17.6 µg/L | 80.0 µg/L | ✓ |
| HAA5 (Haloacetic Acids) | 11.8 µg/L | 60.0 µg/L | ✓ |
| Chromium-6 | 0.14 µg/L | 0.02 µg/L | ⚠ |
✓ = below limit ⚠ = above health goal ✗ = exceeds guideline
How It Compares
Santa Ana benefits from the same Orange County Water District basin management as Anaheim and its neighbors — a system whose recycled-water replenishment program is studied worldwide — making its groundwater situation stronger than most urban basins.
Tips
- •The city's annual Consumer Confidence Report details well-level results
- •Hardness is the main cosmetic complaint; softeners are optional
- •A carbon filter improves chlorine taste if desired
Frequently Asked Questions
Sources & References
The safety rating and guidance on this page draw on the following sources. See our full methodology.
- •US EPA Safe Drinking Water Act regulations
- •EWG Tap Water Database
- •The utility's most recent Consumer Confidence Report (CCR)
- •WHO Guidelines for Drinking-water Quality