Fluoride in Mount Juliet, TN
Most Mount Juliet homes are on West Wilson Utility District water, treated from Old Hickory Lake. Some addresses are on Nashville Metro water. Both systems fluoridate, just below the CDC target.
Mount Juliet’s water is fluoridated, essentially at the CDC target. West Wilson Utility District — the primary utility — reported fluoride at 0.68 mg/L on average in 2025 (range 0.36–0.96 mg/L), just below the CDC recommended 0.7 mg/L. Nashville Metro water, serving some addresses, reported 0.67 mg/L. Both are far below EPA limits.
How this page works: the levels below come from each utility’s own published water quality report, presented per utility and led by West Wilson, the primary system — not from a marketing claim or a guess. New to the topic? Start with our full fluoride guide.
Water quality in Mount Juliet
Curious about your tap water? Tennessee Water Authority has the full Mount Juliet water quality guide — contaminant data, utility details, and filter recommendations.
Mount Juliet’s fluoride, by utility
Everything on this page traces back to these facts, from each utility’s own published water quality report.
LEVEL West Wilson U.D. — primary utility
0.68 mg/L average
Range 0.36–0.96 mg/L, 2025 CCR. Just below the CDC 0.7 mg/L target — essentially at it, stated plainly. Corroboration: 2024 report 0.67 mg/L average (0.50–0.81).
LEVEL Nashville Metro water (some addresses)
0.67 mg/L
Range 0.56–0.75 mg/L, Metro Water Services 2025 CCR. Also just below the CDC target. This is the water at Mount Juliet addresses served by Metro rather than West Wilson.
STATUS Fluoridated — adjusted, both systems
Both treating systems add fluoride. West Wilson’s report lists the source as “Water additive, for strong teeth.”
UTILITY Five utilities serve the area
West Wilson U.D. (TN0000743, ~86,978 served) · Nashville Metro Water Services (TN0000494, ~755,890) · Gladeville U.D. (TN0000264, ~19,813) · Laguardo U.D. (TN0000394, ~14,801) · Venue @ 109 (TN0008297, ~1,890).
SOURCE Old Hickory Lake & the Cumberland River
West Wilson treats Old Hickory Lake water (part of the Cumberland River system) at its own plant. Metro treats Cumberland River water.
AREA SYSTEMS Three systems, no verified figure
Gladeville U.D., Laguardo U.D., and Venue @ 109 serve parts of the wider Mount Juliet area on purchased water. No fluoride figure could be verified for any of them — neither verified level above describes their taps.
How Mount Juliet’s levels compare
Two systems have verified levels here, and both sit just below the CDC target — so the table carries both, next to the three benchmarks that matter, each labeled for exactly what it is.
| Benchmark | Level | How Mount Juliet compares |
|---|---|---|
| West Wilson U.D. average, 2025 | 0.68 mg/L | Range 0.36–0.96 mg/L. The primary utility for most Mount Juliet residents. |
| Nashville Metro Water Services, 2025 | 0.67 mg/L | Range 0.56–0.75 mg/L. Applies to Metro-served Mount Juliet addresses. |
| CDC recommended level | 0.7 mg/L | Both verified levels run just below this — close, but below. We won’t round either up to the target: 0.68 and 0.67 are what the reports say. |
| EPA secondary (non-enforceable) standard | 2.0 mg/L | Both levels are far below this guideline, which is aimed at preventing cosmetic effects like tooth discoloration. |
| EPA enforceable maximum contaminant level (MCL) | 4.0 mg/L | Both levels are far below the legal limit — about one-sixth of it. |
West Wilson’s 2024 report tells the same story: an average of 0.67 mg/L with a range of 0.50–0.81 mg/L. Two years of the utility’s own reports, essentially the same number.
Mount Juliet is not one water system
Five utilities serve the Mount Juliet area. West Wilson covers most city residents and Metro covers some addresses — both verified above. Gladeville U.D., Laguardo U.D., and Venue @ 109 serve other parts of the area on purchased water, and no verified fluoride figure exists for them. Check your water bill for your utility’s name before assuming either verified number is your number.
Do you still need fluoride toothpaste?
Yes — and this is the point people most often get backwards.
Fluoridated drinking water is background exposure. Every glass of water bathes your teeth in a low level of fluoride, and that steady, low-level contact genuinely helps enamel resist acid. But it is a base layer, not the main event. Fluoride toothpaste delivers a much more concentrated dose directly onto the enamel, twice a day, right where decay starts.
That holds on both verified Mount Juliet systems — at West Wilson’s 0.68 mg/L and Metro’s 0.67 mg/L alike: brush twice daily with fluoride toothpaste. If you have been skipping fluoride toothpaste because “it’s in the water anyway,” the water was never carrying that load on its own.
Fluoride and kids: the amounts matter
Young children swallow toothpaste, so the ADA’s guidance is about using the right small amount — not about avoiding fluoride toothpaste.
UNDER 3 A rice-grain smear
For children under age 3, use a smear of fluoride toothpaste about the size of a grain of rice. That tiny amount is deliberate — it protects the teeth while keeping what gets swallowed to a minimum.
AGES 3+ A pea-size amount
From age 3 up, a pea-size amount is enough. A ribbon of paste running the length of the brush is several times more than a child needs.
- Supervise brushing. An adult should be watching (and helping) until a child can reliably spit and rinse on their own.
- Teach spitting, not swallowing. Spit the toothpaste out when done; swallowing it as a habit is what the small amounts are designed to guard against.
- Don’t load the brush. More paste does not mean cleaner teeth — it mostly means more swallowed.
What about fluoride varnish at the dentist?
An in-office fluoride treatment or varnish is a much stronger, targeted dose than anything in tap water or toothpaste.
At 0.68 mg/L (West Wilson) and 0.67 mg/L (Metro) — just below the CDC recommended level — varnish remains worthwhile for kids and for adults at higher cavity risk: people with recent cavities, dry mouth, braces, or exposed tooth roots. The water gives you a nearly full base layer, and varnish tops it up exactly where a clinician can see it’s needed.
If your cavity risk is low, it’s also reasonable to ask your dentist to walk you through your risk before a treatment — in either direction, the decision should be explained, not automatic.
On a private well? None of this applies automatically
Well water is not fluoridated by any utility
Nobody adjusts the fluoride in a private well — or tests it, unless you do. Well water may carry naturally occurring fluoride, almost none, or more than you’d expect, and taste won’t tell you. This matters in Wilson County, where a home can be minutes from a city main and not connected to it. Test your well water before assuming what’s in it, and tell your dentist you’re on well water so your fluoride plan is built on your actual water, not the city’s.
How to confirm Mount Juliet’s level yourself
Don’t take our word for it — the primary sources are public.
- Read your utility’s current water quality report. West Wilson’s 2025 report (PDF) lists fluoride at 0.68 mg/L average (range 0.36–0.96 mg/L); Metro’s 2025 report lists 0.67 mg/L (range 0.56–0.75 mg/L). A new report comes out each year; the newest one is the one to trust.
- Check CDC’s My Water’s Fluoride. The CDC’s system-by-system tracker at nccd.cdc.gov/DOH_MWF lists fluoridation status and levels for community water systems, including West Wilson U.D. (TN0000743) and Metro Water Services (TN0000494).
- Check whose name is on your bill. If your bill names Gladeville, Laguardo, or Venue @ 109 instead of West Wilson or Metro, that utility’s report governs your tap — no figure for those systems is published on this page.
For the bigger picture — how fluoridation works, the arguments on both sides, and how to think about filters — see our full fluoride guide.
Questions people actually ask
Asked the way people actually ask them — answered from the sources cited below.
Yes — on both systems with verified data. West Wilson Utility District, which serves most Mount Juliet residents, reported fluoride at 0.68 mg/L on average in its 2025 report. Nashville Metro Water Services, which serves some Mount Juliet addresses, reported 0.67 mg/L in 2025. Both systems add fluoride.
It depends on your utility. West Wilson customers get an average of 0.68 mg/L (range 0.36–0.96 mg/L, 2025 report) — just below the CDC recommended 0.7 mg/L. Metro-served addresses get 0.67 mg/L (range 0.56–0.75 mg/L). If your bill names Gladeville, Laguardo, or Venue @ 109, no fluoride figure for those systems could be verified for this page.
It is just below the CDC recommended level of 0.7 mg/L — essentially at the target, but this page states it plainly rather than rounding it up. It is far below both EPA standards: the secondary (non-enforceable) standard is 2.0 mg/L and the enforceable maximum contaminant level (MCL) is 4.0 mg/L. Brushing twice daily with fluoride toothpaste covers the rest of what your teeth need.
Only if West Wilson Utility District is your utility. If your bill names Nashville Metro Water Services, your level is Metro's 0.67 mg/L. If it names Gladeville Utility District, Laguardo Utility District, or Venue @ 109, those are separate purchased-water systems and no fluoride figure for them could be verified — read that utility's own water quality report. Check whose name is on your water bill; that utility's report governs your tap.
Yes. Fluoridated drinking water is background exposure — it bathes your teeth in a low level of fluoride through the day, which helps, but it does not replace the concentrated fluoride that toothpaste delivers directly to the enamel while you brush. Brush twice a day with fluoride toothpaste, and treat the water as a helpful base layer, not the whole defense.
The ADA's guidance: for children under age 3, use a smear of fluoride toothpaste about the size of a grain of rice. For ages 3 and up, a pea-size amount is enough. Supervise brushing, teach your child to spit the toothpaste out rather than swallow it, and remember that more paste on the brush does not mean cleaner teeth — the small amounts are deliberate, because young kids swallow some no matter what.
For many people, yes. West Wilson's water at 0.68 mg/L and Metro's at 0.67 mg/L both sit just below the CDC recommended level, so the water alone is not the full story. An in-office fluoride treatment or varnish puts a much stronger dose directly on the teeth, and it remains worthwhile for kids and for adults at higher cavity risk — people with recent cavities, dry mouth, braces, or exposed roots. If your cavity risk is low, ask your dentist to explain your risk either way rather than accepting or skipping it on autopilot.
No utility fluoridates private well water — nobody adjusts it at all. Well water can contain some naturally occurring fluoride, a lot, or almost none, and you cannot tell by taste. If your home is on a well in Wilson County, have the water tested before assuming anything about its fluoride level, and tell your dentist you are on well water so your fluoride plan reflects it.
Start with your own utility's current water quality report — West Wilson's 2025 report and Metro's 2025 report are linked in the sources below, and each lists fluoride with its average and range. You can also check CDC's My Water's Fluoride, which tracks fluoridation status and levels by water system. If your bill names Gladeville, Laguardo, or Venue @ 109, that utility's report is the one that governs your tap.
Sources & method
- West Wilson Utility District, CCR Report 2025 — fluoride 0.68 mg/L average, range 0.36–0.96 mg/L, source “Water additive, for strong teeth”; source water Old Hickory Lake (Cumberland River system); system TN0000743; westwilsonutility.com/documents/377/CCR_Report_2025v4.pdf.
- West Wilson Utility District, CCR Report 2024 — corroborating fluoride average of 0.67 mg/L, range 0.50–0.81 mg/L.
- Nashville Metro Water Services, CCR 2025 — fluoride 0.67 mg/L, range 0.56–0.75 mg/L; system TN0000494.
- Tennessee Water Authority, Mount Juliet water quality guide — five-utility structure, PWSIDs, purchasing relationships, and served populations; tennesseewaterauthority.com/mount-juliet-tn-water-quality-guide.
- CDC — recommended fluoride level of 0.7 mg/L for community water systems; fluoridation status and levels are also tracked in CDC’s My Water’s Fluoride.
- EPA — enforceable maximum contaminant level (MCL) of 4.0 mg/L and secondary (non-enforceable) standard of 2.0 mg/L for fluoride in drinking water.
- American Dental Association (ADA) — children’s toothpaste amounts: a rice-grain smear under age 3, a pea-size amount at ages 3 and up, with supervised brushing.
Method in one line: Mount Juliet’s levels come from the two treating utilities’ own published reports — West Wilson’s 2025 CCR and Metro’s 2025 CCR — presented per utility, with the three purchased-water area systems carried as honest gaps rather than assigned another system’s figure. We never name, rank, or recommend private dental practices.