Fluoride in Fullerton, CA Drinking Water
Fluoride data for Fullerton, California · 140,986 residents · 8 ZIP codes
SDWIS federal records include Fluoride detections tied to water systems serving Fullerton, California.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-04-05
Fluoride in Fullerton Tap Water
Fluoride has been detected in Fullerton, California drinking water at a maximum level of 20.6 ppb — below the EPA MCL of 4.0 mg/L (MCL) / 2.0 mg/L (SMCL).
This analysis covers 140,986 residents across 8 ZIP codes in Fullerton.
Fullerton's overall water quality grade is A (95/100).
Is Fluoride in Fullerton Water Safe?
If you live in an affected ZIP code, consider installing a reverse osmosis or activated alumina filter certified under NSF 58 and testing your water independently.
Fluoride Levels by ZIP Code
| ZIP Code | Fluoride Level | EPA Limit | Status |
|---|---|---|---|
| 92831 | 20.6 ppm | 4.0 mg/L (MCL) / 2.0 mg/L (SMCL) | OK |
| 92832 | 20.6 ppm | 4.0 mg/L (MCL) / 2.0 mg/L (SMCL) | OK |
| 92833 | 20.6 ppm | 4.0 mg/L (MCL) / 2.0 mg/L (SMCL) | OK |
| 92834 | 20.6 ppm | 4.0 mg/L (MCL) / 2.0 mg/L (SMCL) | OK |
| 92835 | 20.6 ppm | 4.0 mg/L (MCL) / 2.0 mg/L (SMCL) | OK |
| 92836 | 20.6 ppm | 4.0 mg/L (MCL) / 2.0 mg/L (SMCL) | OK |
| 92837 | 20.6 ppm | 4.0 mg/L (MCL) / 2.0 mg/L (SMCL) | OK |
| 92838 | 20.6 ppm | 4.0 mg/L (MCL) / 2.0 mg/L (SMCL) | OK |
Average fluoride level across Fullerton: 20.6 ppb
Health Effects of Fluoride
- Skeletal fluorosis at levels above 4 mg/L (bone pain, joint stiffness)
- Dental fluorosis in children at levels above 2 mg/L
- At 0.7 mg/L (water fluoridation level), helps prevent tooth decay
- Possible thyroid effects at high chronic exposure
Health risk severity: Moderate. Governed by the National Primary Drinking Water Regulations.
How Fluoride Gets Into Drinking Water
- Intentional water fluoridation (0.7 mg/L target, beneficial)
- Natural deposits in certain rock formations
- Industrial discharge (aluminum, fertilizer production)
- Naturally elevated in some groundwater (especially arid regions)
What to Do About Fluoride in Fullerton Water
- Reverse osmosis removes 90%+ of fluoride
- Activated alumina filters are effective for fluoride
- Bone char carbon can reduce fluoride
- Standard activated carbon filters do NOT remove fluoride
Look for filters certified under NSF 58 for fluoride removal.