Fluoride in Harrogate, TN Water: Yes, It's Fluoridated — at 0.474 mg/L
Harrogate's utility adds fluoride to its water and holds it in a tight range — but the measured level runs below what the CDC recommends. Here's the number, how it stacks up against the federal benchmarks, and what it means for toothpaste, kids, and anyone on a well or the university's separate system.
Yes — Harrogate's water is fluoridated. Arthur-Shawanee Utility District (TN0000022) treats its own surface water from the Claiborne County Reservoir and adjusts the fluoride in it. Its 2025 Consumer Confidence Report measured 0.474 mg/L on average (range 0.381–0.537 mg/L) — below the CDC recommended level of 0.7 mg/L, at about two-thirds of it, so fluoride toothpaste matters all the more here.
How to read this page: every Harrogate figure comes from Arthur-Shawanee Utility District's own 2025 Consumer Confidence Report — not from estimates or national averages. One scope note up front: these figures describe Arthur-Shawanee Utility District customers only. Lincoln Memorial University's campus runs a separate water system (TN0000290), which was not verified for this page — see which system serves you below.
The full picture: our complete fluoride guide
This page is the Harrogate companion — the local number and what it means. For the statewide walkthrough (how fluoridation works, the safety evidence, filters that remove fluoride, and how Tennessee cities compare), see our complete fluoride guide.
Water quality in Harrogate
Curious about your tap water? Tennessee Water Authority has the full Harrogate water quality guide — contaminant data, utility details, and filter recommendations. Read the Harrogate water quality guide.
Harrogate's fluoride facts, at a glance
- Water utility
- Arthur-Shawanee Utility DistrictTreats its own surface water from the Claiborne County Reservoir
- Public water system ID
- TN0000022
- Fluoridation status
- Fluoridated — fluoride adjustedThe utility's report lists fluoride's source as a water additive that promotes strong teeth
- Measured level
- 0.474 mg/L averageRange 0.381–0.537 mg/L
- Data year
- 2025From the utility's 2025 Consumer Confidence Report
- People served
- About 9,776
Harrogate's fluoride level, against the benchmarks
Arthur-Shawanee practices adjusted fluoridation: its 2025 Consumer Confidence Report lists fluoride's source as a water additive that promotes strong teeth, and the measured level is controlled in a tight range — 0.381 to 0.537 mg/L across the year's testing. The average, 0.474 mg/L, is real fluoridation, but it lands below the CDC recommended level. We'll say it plainly: about two-thirds of the target, not the target itself. The level is steady, at least — the utility's 2023 report averaged 0.475 mg/L, essentially unchanged across the two years.
| Measure | Level | What it is |
|---|---|---|
| Arthur-Shawanee Utility District — measured average, 2025 | 0.474 mg/LRange 0.381–0.537 mg/L | What the utility's own testing actually found in the water during 2025 |
| CDC recommended level | 0.7 mg/L | The level U.S. public health agencies recommend for balancing cavity protection against fluorosis risk. Harrogate's average sits below this — about two-thirds of it |
| EPA secondary (non-enforceable) standard | 2.0 mg/L | A non-enforceable guideline aimed at preventing cosmetic dental fluorosis (mottling) in children. Harrogate is far below it |
| EPA enforceable maximum contaminant level (MCL) | 4.0 mg/L | The enforceable legal ceiling for fluoride in public drinking water. Harrogate's result is a small fraction of it — no violation |
Don't confuse the three federal numbers — they're often scrambled in online discussions. 0.7 mg/L is the CDC's recommendation (the target for cavity prevention). 2.0 mg/L is the EPA's secondary standard (a non-enforceable guideline about cosmetic effects). 4.0 mg/L is the EPA's enforceable maximum contaminant level (MCL). Harrogate's 0.474 mg/L is below the first and far below the other two.
What 0.474 mg/L means for your teeth
Fluoridated water at a below-target level is still working for you — every glass delivers a small background dose that helps remineralize enamel. But at 0.474 mg/L instead of 0.7, the background dose is thinner, which makes the things you control — toothpaste, kids' brushing habits, and in-office treatments for cavity-prone teeth — carry more of the load.
01 Do you still need fluoride toothpaste? Yes
Water is background exposure; toothpaste is the main event. Brushing puts a concentrated dose of fluoride directly on the enamel surface, twice a day — that's where most cavity protection actually comes from, in Harrogate and everywhere else.
So yes, you still need fluoride toothpaste twice daily even though your tap water is fluoridated. Skipping it because "the water has fluoride" gives up the strongest protection you have — and in Harrogate, where the water runs below the recommended level, that trade is worse than average.
02 Kids: small amounts, supervised
Children need fluoride toothpaste too — in the right amount. The ADA's guidance: a rice-grain smear for children under age 3, and a pea-size amount from age 3 up.
Supervise brushing and teach kids to spit, not swallow. Young children who swallow toothpaste day after day can take in more fluoride than they need while their permanent teeth are still forming — the amounts above are sized to prevent exactly that while still protecting the teeth.
03 Fluoride varnish: worth a little more here
If you or your child is cavity-prone — new cavities keep appearing, or there are risk factors like dry mouth or a history of decay — in-office fluoride varnish is worthwhile. It delivers a much stronger, longer-lasting dose than either water or toothpaste.
The honest framing: because Harrogate's water runs below the CDC recommended level, varnish carries somewhat more value here than it would in a town at the full 0.7 mg/L — especially for kids and higher-risk adults. That's a nudge, not an alarm: for a child who rarely gets cavities, the added gain is still modest. Your dentist can tell you which side of that line your family is on.
04 On a private well? Different rules
Private wells are not fluoridated by any utility — Arthur-Shawanee's adjusted fluoride reaches only its own customers. Whatever fluoride is in well water is whatever occurs naturally in the ground, which varies and is usually low.
If your home is on a well, test the water before assuming anything about its fluoride level. Supplements dosed without knowing the water's natural level can overshoot, and they should only ever be used with a dentist's or pediatrician's input — never as a guess based on city water numbers.
First, check which system serves you
Everything above describes Arthur-Shawanee Utility District (TN0000022), which treats surface water from the Claiborne County Reservoir and serves about 9,776 people in the Harrogate area. But there's one notable exception in town.
The Lincoln Memorial University exception
Lincoln Memorial University's campus runs its own separate water system (TN0000290). We did not verify that system's fluoridation status or level for this page, and we won't guess at it. If your water comes from the LMU campus system — students and staff living or working on campus especially — treat this page's numbers as not yours and check that system's own Consumer Confidence Report instead. The steps below work for any system.
How to confirm it yourself
Don't take our word for it — the primary document is public, and checking it takes two minutes.
- Read Arthur-Shawanee's Consumer Confidence Report. The utility's 2025 Consumer Confidence Report lists fluoride at 0.474 mg/L on average, with a range of 0.381–0.537 mg/L, and names a water additive that promotes strong teeth as its source. A new report is published each year — next year's is the one to watch for changes.
- Check CDC My Water's Fluoride. The CDC's My Water's Fluoride database tracks fluoridation status by water system and county — a good cross-check, and the place to look up a different system if your water doesn't come from Arthur-Shawanee.
- On the LMU campus system or another system? Find that system's own Consumer Confidence Report (every public water system must make one available to customers annually) and look for the fluoride row: the level detected, the range, and whether the system describes adjusting or adding fluoride.
- On a private well? No report exists — your water is yours to test. A certified lab test for fluoride tells you the natural level before you and your dentist or pediatrician discuss whether anything more is needed.
Questions people actually ask us
The real questions from the chair — answered straight, with Harrogate's actual numbers.
Yes. Harrogate's water is fluoridated. Arthur-Shawanee Utility District (TN0000022) treats its own surface water from the Claiborne County Reservoir and adjusts the fluoride in it. Its 2025 Consumer Confidence Report lists fluoride's source as a water additive that promotes strong teeth, and the measured level is held in a tight range — the signature of a utility that is deliberately managing the level, not just reporting whatever occurs naturally.
Arthur-Shawanee Utility District's 2025 Consumer Confidence Report measured an average of 0.474 mg/L, with individual results ranging from 0.381 to 0.537 mg/L. That is below the CDC recommended level of 0.7 mg/L — about two-thirds of it — and far below both EPA standards: the secondary (non-enforceable) standard of 2.0 mg/L and the enforceable maximum contaminant level (MCL) of 4.0 mg/L. The level is also steady: the utility's 2023 report averaged 0.475 mg/L, essentially unchanged.
It helps, but it is below the level public health agencies recommend. The CDC recommended level for drinking water is 0.7 mg/L, and Harrogate's 2025 average of 0.474 mg/L is about two-thirds of that. You still get background cavity protection from the water, but fluoride toothpaste twice a day is doing most of the work. Do not start fluoride supplements on your own to close the gap — that is a decision to make with a dentist or pediatrician who knows your total fluoride exposure.
Yes. Think of drinking water as background exposure and toothpaste as the main event — toothpaste puts a concentrated dose of fluoride directly on the enamel, twice a day, which is where most cavity protection comes from. That matters even more in Harrogate, because the water runs below the CDC recommended level. Brush twice daily with fluoride toothpaste. For children, use a rice-grain smear for under age 3 and a pea-size amount from age 3, supervise brushing, and teach kids to spit rather than swallow.
Follow the ADA's amounts: a rice-grain smear of fluoride toothpaste for children under age 3, and a pea-size amount for children age 3 and up. Supervise brushing, and teach your child to spit the toothpaste out rather than swallow it. Young children who swallow toothpaste day after day can take in more fluoride than they need while their permanent teeth are still forming — the small amounts above are sized to protect teeth without that risk.
For cavity-prone kids — and higher-risk adults — yes, it is worth asking about. Because Harrogate's water runs below the CDC recommended level, professional fluoride varnish carries somewhat more value here than it would in a town at the full 0.7 mg/L: it delivers a strong, controlled dose that does not depend on the tap. If cavities keep showing up, varnish is one of the cheapest, easiest reinforcements available. If your child rarely gets cavities, the added gain is more modest. Ask your dentist where your family falls.
Private well water is not fluoridated by any utility — Arthur-Shawanee's adjusted fluoride reaches only its own customers. Whatever fluoride is in well water is whatever occurs naturally in the ground, which varies and is usually low. If your home is on a well, have the water tested for fluoride before assuming anything, and only consider supplements with a dentist's or pediatrician's advice — never as a guess based on city water numbers.
No. The figures on this page describe Arthur-Shawanee Utility District (TN0000022) customers only. Lincoln Memorial University's campus runs its own separate water system (TN0000290), and we did not verify that system's fluoridation status or level for this page — so do not assume Harrogate's numbers apply on campus. If your water comes from the LMU system, check that system's own Consumer Confidence Report.
Sources
- Arthur-Shawanee Utility District — 2025 Consumer Confidence Report: fluoride average 0.474 mg/L, range 0.381–0.537 mg/L, with fluoride's source listed as a water additive that promotes strong teeth; system treats surface water from the Claiborne County Reservoir and serves about 9,776 people. asudtn.com/wp-content/uploads/sites/62/2026/03/CCR-2025-Arthur-Shawanee.pdf (accessed October 20, 2026). Primary source for Harrogate's status and level. The utility's 2023 report averaged 0.475 mg/L — essentially unchanged.
- CDC — community water fluoridation: recommended fluoride level for drinking water, 0.7 mg/L. Cross-check any system's status in CDC My Water's Fluoride.
- U.S. EPA — National Primary and Secondary Drinking Water Regulations: fluoride enforceable maximum contaminant level (MCL) 4.0 mg/L; secondary (non-enforceable) standard 2.0 mg/L.
- American Dental Association: fluoride toothpaste amounts for children — rice-grain smear under age 3, pea-size amount from age 3.