Fluoride in Houston, DE Drinking Water
Fluoride data for Houston, Delaware · 9,800 residents · 1 ZIP code
If you rely on a public water system in Houston, Delaware, Fluoride is a contaminant your utility has been required to test for — and EPA records show it has been detected at measurable levels, making it worth understanding as part of your tap water's detection record.
Data: EPA SDWIS, CCR Reports, ECHO Last verified: 2026-05-14
Fluoride in Houston Tap Water
Fluoride has been detected in Houston, Delaware drinking water at a maximum level of 1.4 ppb — below the EPA MCL of 4.0 mg/L (MCL) / 2.0 mg/L (SMCL).
This analysis covers 9,800 residents across 1 ZIP code in Houston.
Houston's overall water quality grade is C (66/100).
Is Fluoride in Houston Water Safe?
Fluoride was detected in Houston water but currently falls within EPA limits. However, some health organizations argue the EPA MCL may not be protective enough.
If you are concerned, a reverse osmosis or activated alumina filter can reduce fluoride levels further.
Fluoride Levels by ZIP Code
| ZIP Code | Fluoride Level | EPA Limit | Status |
|---|---|---|---|
| 19954 | 1.4 ppm | 4.0 mg/L (MCL) / 2.0 mg/L (SMCL) | OK |
Average fluoride level across Houston: 1.4 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 Houston 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.