Fluoride in East Ridge’s Water
East Ridge’s water is fluoridated. Tennessee American Water adjusts the fluoride level at its Citico treatment plant to an average of 0.69 mg/L — right at the CDC’s recommended 0.7 mg/L, and far below every federal limit. Here is what that means for your teeth, your kids, and your toothpaste routine.
Last updated: October 20, 2026
Water quality in East Ridge
Curious about your tap water? Tennessee Water Authority has the full East Ridge water quality guide — contaminant data, utility details, and filter recommendations.
East Ridge’s level, against the benchmarks
East Ridge is served solely by Tennessee American Water. The water is treated at the Citico plant, where the utility adds fluoride as required by local law, targeting 0.7 mg/L. That adjustment matters because the source water on its own wouldn’t get there: the river’s natural fluoride is only about 0.1 mg/L. The utility has documented this adjustment to the 0.7 target since 2011.
| Measurement | Fluoride level | What it is |
|---|---|---|
| East Ridge — Tennessee American Water | 0.69 mg/L2025 average · range 0.67–0.71 | What actually comes out of East Ridge taps, per the utility’s 2025 Consumer Confidence Report. |
| CDC recommended level | 0.7 mg/L | The level the CDC recommends for balancing cavity prevention against the risk of dental fluorosis. |
| EPA secondary standard | 2.0 mg/L | A non-enforceable guideline set to protect children against cosmetic fluorosis (tooth mottling). |
| EPA maximum (MCL) | 4.0 mg/L | The enforceable legal limit for fluoride in public drinking water. |
In plain terms: East Ridge sits essentially exactly on the CDC’s recommended level — about one-third of the EPA’s secondary guideline and less than one-fifth of the enforceable maximum.
What fluoridated water means for your daily routine
Fluoridated water is one layer of protection, not the whole system. It works as background exposure — every glass of water and every meal cooked in it bathes your teeth in a low level of fluoride that helps repair early enamel damage throughout the day. The targeted, higher-dose tools still do their own jobs.
You still need fluoride toothpaste, twice a day
Toothpaste delivers a far more concentrated dose of fluoride directly to the tooth surface than water ever could. Fluoridated water doesn’t replace it — the two work together, and skipping the toothpaste gives up the stronger half of the protection.
Small amounts for small brushes
Per the ADA: children under age 3 should use a rice-grain-sized smear of fluoride toothpaste, and from age 3, a pea-sized amount. Teach them to spit, not swallow, and supervise until they can brush reliably on their own.
Varnish still helps — with an honest caveat
In-office fluoride varnish remains useful, especially for cavity-prone patients — kids with a history of decay, people with dry mouth, exposed roots, or braces. The honest note: because East Ridge’s water is already fluoridated at the target level, the added benefit of varnish is smaller here than it would be in a non-fluoridated area. It’s a judgment call worth discussing at your checkup, not an automatic yes or no.
On a well? Test before you supplement
Adjusted fluoridation applies only to the public system. Well water has whatever fluoride occurs naturally in the groundwater, which varies from property to property. Have your water tested first, and use fluoride supplements only on a dentist’s or physician’s advice — too much fluoride while teeth are developing can cause dental fluorosis.
How to confirm East Ridge’s fluoride level yourself
Don’t take any website’s word for it — including this one. Two primary sources let you check the number directly:
- Read the utility’s Consumer Confidence Report. Tennessee American Water publishes its annual water quality report for the Chattanooga–East Ridge system at amwater.com/ccr/chattanooga.pdf. The 2025 report lists fluoride at a 0.69 mg/L average with a range of 0.67–0.71 mg/L, and states that fluoride is added at the Citico plant as required by local law.
- Check CDC My Water’s Fluoride. The CDC’s database at nccd.cdc.gov/DOH_MWF tracks fluoridation status and levels by water system — look up Tennessee American Water (system TN0000107).
Want the bigger picture? Our complete fluoride guide explains how fluoridation works, how the CDC and EPA levels were set, and what to do if your water isn’t fluoridated.
Common questions about East Ridge’s fluoride
Yes. East Ridge is served solely by Tennessee American Water, which adds fluoride at its Citico treatment plant as required by local law. This is called adjusted fluoridation — the Tennessee River’s natural fluoride is only about 0.1 mg/L, so the utility raises it to a target of 0.7 mg/L.
The 2025 Consumer Confidence Report lists an average of 0.69 mg/L, with samples ranging from 0.67 to 0.71 mg/L. That sits right at the CDC’s recommended level of 0.7 mg/L, well under the EPA’s secondary standard of 2.0 mg/L and its enforceable maximum of 4.0 mg/L.
Yes. Fluoridated water works as background exposure — it bathes your teeth in low levels of fluoride throughout the day. Fluoride toothpaste delivers a much more concentrated dose directly to the tooth surface, and the two work together. Keep brushing twice a day with fluoride toothpaste.
Follow the ADA’s guidance: for children under age 3, use a rice-grain-sized smear of fluoride toothpaste. From age 3, use a pea-sized amount. Teach kids to spit rather than swallow, and supervise brushing until they can do it reliably on their own.
No — adjusted fluoridation only applies to the public system. Well water contains whatever fluoride occurs naturally in the groundwater, which varies. Have your well water tested before considering fluoride supplements, and only use supplements on a dentist’s or physician’s advice, since too much fluoride during childhood can cause dental fluorosis.
Most common filters do not. Carbon pitcher and faucet filters — the kind sold for taste and chlorine — do not remove fluoride. Reverse osmosis systems do remove fluoride, as do activated alumina filters and distillers. If you use reverse osmosis for all your drinking water, mention it to your dentist, especially for young children.
Sources
- Tennessee American Water, 2025 Consumer Confidence Report (Chattanooga system, TN0000107) — fluoride average 0.69 mg/L, range 0.67–0.71 mg/L; fluoride added at the Citico plant as required by local law. amwater.com/ccr/chattanooga.pdf
- CDC, My Water’s Fluoride — fluoridation status and level by water system. nccd.cdc.gov/DOH_MWF
- CDC — recommended community water fluoride level of 0.7 mg/L.
- U.S. EPA, National Primary Drinking Water Regulations — fluoride MCL 4.0 mg/L; secondary standard 2.0 mg/L.
- American Dental Association — fluoride toothpaste amounts for children (rice-grain smear under age 3; pea-sized from age 3).