Fluoride in Martin, TN Water: 0.52 mg/L — Fluoridated, Below the CDC Target
Yes — Martin's water is fluoridated. Martin Water Department's own Water Quality Report for 2025 measured fluoride at an average of 0.52 mg/L (range 0.48–0.59 mg/L), which is below the CDC-recommended 0.7 mg/L. Here's the report behind the number, how Martin stacks up against the federal benchmarks, and what a below-target level means for your teeth.
Martin's water is fluoridated, at 0.52 mg/L on average. That's the 2025 figure from Martin Water Department's own Water Quality Report (range 0.48–0.59 mg/L) — real cavity protection, but below the CDC-recommended 0.7 mg/L, and far below both EPA limits. The 2024 report backs it up at 0.644 mg/L. Details and sources below.
One careful note on the status call: Martin's water report prints the fluoride level but contains no explicit "we add fluoride" statement. The adjusted (fluoridated) status rests on the CDC Fluoridation Census, which lists Martin as adjusting fluoride since June 1967, plus two consecutive years of measured levels tightly clustered just below the 0.7 mg/L target — the same evidentiary standard used on every city page on this site. Either way, 0.52 mg/L is below the CDC-recommended 0.7 mg/L.
Water quality in Martin
Curious about your tap water? Tennessee Water Authority has the full Martin water quality guide — contaminant data, utility details, and filter recommendations. Read the Martin water quality guide.
The full picture: our complete fluoride guide
This page is the Martin companion — the local level, the local report, and what follows from them. For the statewide walkthrough (how fluoridation works, the safety evidence, filters that remove fluoride, and how Tennessee cities compare), see our complete fluoride guide.
The facts: Martin Water Department
Martin Water Department serves about 10,632 people in Weakley County, Tennessee, pumping groundwater from the Memphis Sands Aquifer. Every figure below comes from the utility's own published water quality reports or the CDC's fluoridation records.
- Utility
- Martin Water DepartmentCity of Martin, Weakley County, Tennessee
- Public water system ID
- TN0000435
- People served
- About 10,632
- Source water
- Groundwater from the Memphis Sands Aquifer
- Fluoridation status
- Adjusted (fluoridated)Basis: the CDC Fluoridation Census lists Martin as adjusting fluoride since June 1967, and the utility's measured levels sit tightly clustered just below the 0.7 mg/L target two years running. The water quality report itself contains no explicit "we add fluoride" statement — see the note under the short answer above.
- Fluoride level — 2025
- 0.52 mg/L average, range 0.48–0.59 mg/LFrom the Martin Water Department Water Quality Report for 2025, published by the City of Martin at cityofmartin.net. Below the CDC-recommended 0.7 mg/L.
- Fluoride level — 2024
- 0.644 mg/L average, range 0.541–0.744 mg/LFrom the utility's 2024 water quality report — a second consecutive year in the same narrow band just under the 0.7 mg/L target.
Martin's level against the benchmarks
One measured number, three federal yardsticks — and they mean three different things, so they're kept separate here. Martin clears every safety benchmark by a wide margin; the only benchmark it doesn't reach is the CDC's recommended target, which it falls short of.
| Measure | Level | What it is |
|---|---|---|
| Martin Water Department — 2025 measured level | 0.52 mg/LAverage; range 0.48–0.59 | The utility's own reported result for 2025. (2024: 0.644 mg/L average, range 0.541–0.744.) |
| CDC recommended level | 0.7 mg/L | The level U.S. public health agencies recommend for balancing cavity protection against fluorosis risk — the target a fluoridating utility aims for. Martin's 0.52 mg/L is below it. |
| EPA secondary (non-enforceable) standard | 2.0 mg/L | A non-enforceable guideline aimed at preventing cosmetic dental fluorosis (mottling) in children. Martin is at about a quarter of it. |
| EPA enforceable maximum contaminant level (MCL) | 4.0 mg/L | The enforceable legal ceiling for fluoride in public drinking water. Martin is at about an eighth of it. |
How to read this: the gap that matters in Martin is the small one at the top — 0.52 vs. 0.7 mg/L. It means the water delivers genuine fluoride exposure, just somewhat less than the level public health agencies settled on as optimal. The two EPA figures are safety ceilings, not targets, and Martin is nowhere near either.
How to confirm it yourself
Don't take this page's word for it — the primary source is public, and the utility will answer the question directly. Three routes, in order of authority:
- Read the 2025 water quality report. The Martin Water Department Water Quality Report for 2025 is published by the City of Martin at cityofmartin.net. Find the fluoride row in the report's water-quality table: it reports a 0.52 mg/L average with a range of 0.48–0.59 mg/L. The 2024 edition of the same report (0.644 mg/L average) is posted there as well.
- Check CDC's My Water's Fluoride. The CDC's My Water's Fluoride lookup tracks fluoridation status by water system — search for Martin Water Department (TN0000435, Weakley County). The CDC Fluoridation Census behind it lists Martin as adjusting fluoride since June 1967.
- Call the water department. The number printed in Martin's own water quality report is 731-587-2676. Ask one plain question — "Does Martin adjust the fluoride in its drinking water?" — and you'll get the direct answer from the people who run the system.
About that missing sentence
Read the report closely and you'll notice it reports the fluoride level without an explicit "we add fluoride" statement. That's exactly why this page grounds the adjusted status in the CDC Fluoridation Census listing (Martin, adjusting since June 1967) together with the measured levels — two straight years clustered tightly just below the 0.7 mg/L target, which is not how unmanaged aquifer water behaves. It's a well-supported call, stated with its evidence, rather than a claim the report never quite makes in words.
What a below-target level means for your teeth
Martin's water gives you a real but slightly reduced fluoride baseline. That calibration — fluoridated, but under the 0.7 mg/L target — is what the practical guidance below is built on.
01 Toothpaste is still the main event
Fluoridated drinking water is background exposure — a low level washing over your teeth as you drink. Toothpaste is where most cavity protection comes from: it puts a concentrated dose of fluoride directly on the enamel, twice a day, and holds it there.
Because Martin runs at 0.52 mg/L rather than 0.7, the water's share of your protection is a bit smaller than the CDC intends — so don't treat fluoridated water as a reason to ease up. Brush twice daily with fluoride toothpaste; it matters slightly more here than in a town sitting right on target.
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 for ages 3 and up.
Supervise brushing, teach spitting, don't 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 measured amounts protect the teeth while keeping total intake — tap water included — in the right zone.
03 Fluoride varnish: worth asking about here
Martin is a fluoridated-but-below-target supply: the water helps, but at 0.52 mg/L it leaves a modest gap against the 0.7 mg/L level public health agencies aim for. Professional fluoride varnish at the dentist is an inexpensive way to close that gap.
It's most worthwhile for kids and anyone cavity-prone — if your family rarely gets cavities, it's a smaller, optional bonus. Either way it's a quick conversation with your dentist, who can weigh your cavity history. In a town with no water fluoride at all, this recommendation would be stronger; in Martin it sits at "sensible, especially if you're prone."
04 On a private well? Test before assuming
Well water is never fluoridated by a utility — no one is adjusting it. Whatever fluoride a well holds is whatever occurs naturally in the ground, which varies from well to well and is usually low. Martin's 0.52 mg/L figure describes the city system only.
So test your well water before assuming it contains fluoride — and before assuming it doesn't. A lab result gives you and your dentist or pediatrician a real number to plan around, including whether supplements make sense at all.
Questions people actually ask us
The real questions from the chair — answered from Martin's own reports and the CDC's records.
Yes. Martin Water Department's Water Quality Report for 2025 measured fluoride at an average of 0.52 mg/L, and the CDC Fluoridation Census lists Martin as a community that has adjusted its fluoride since June 1967. One honest caveat: the water report itself doesn't contain an explicit "we add fluoride" statement — the adjusted status rests on the census listing plus two consecutive years of measured levels tightly clustered just below the 0.7 mg/L target, the same evidentiary standard used across this site.
An average of 0.52 mg/L in 2025, with individual results ranging from 0.48 to 0.59 mg/L, according to the Martin Water Department Water Quality Report for 2025. The year before ran slightly higher: the 2024 report shows a 0.644 mg/L average, range 0.541–0.744 mg/L. Either way, Martin's level sits below the CDC-recommended 0.7 mg/L — and far below the EPA's secondary standard of 2.0 mg/L and its enforceable maximum of 4.0 mg/L.
Two pieces of evidence, taken together. First, the CDC Fluoridation Census — the federal record of which systems adjust fluoride — lists Martin as adjusting since June 1967. Second, Martin's own reports show levels tightly clustered just below the 0.7 mg/L recommended target two years running (0.52 mg/L average in 2025; 0.644 mg/L in 2024). Raw aquifer water doesn't hold that steady a level just under the target year after year; a system managing its fluoride does. That combination is the standard this site applies everywhere, and we're plain about the fact that the report prints the level without an explicit adjustment statement.
Yes. Fluoridated water is background exposure — a low level passing over your teeth as you drink. Toothpaste is the main event: it puts a concentrated dose of fluoride directly on the enamel and holds it there. And because Martin's 0.52 mg/L runs below the CDC's 0.7 mg/L target, the water's contribution here is a little smaller than intended — which makes twice-daily fluoride toothpaste matter more, not less.
Follow the American Dental Association's guidance: a rice-grain smear of fluoride toothpaste for children under age 3, and a pea-size amount for ages 3 and up. Supervise brushing, teach kids to spit the toothpaste out, and don't let them swallow it. Those amounts are sized to protect teeth that are still forming without overdoing total fluoride intake from all sources combined — water included.
It's worth asking about. Martin's water is fluoridated but runs below the CDC's 0.7 mg/L target, so there's a modest gap between the protection the water provides and the level public health agencies aim for. Professional fluoride varnish is an inexpensive way to close that gap — most worthwhile for kids and anyone who keeps getting cavities. It's a judgment call to make with your dentist based on your family's cavity history, not a must for everyone on Martin water.
Then Martin's numbers don't apply to your tap. Well water is never fluoridated by a utility, so whatever fluoride it holds is whatever occurs naturally in the ground — which varies from well to well and is usually low. Don't assume your well water contains fluoride, and don't assume it contains none. Get it tested first, then talk with a dentist or pediatrician about whether anything more is needed.
Sources & method
Every number on this page traces to the utility's own published reports or the CDC's fluoridation records. Here's exactly what each source says — including the one thing the main source doesn't say.
- Martin Water Department Water Quality Report for 2025 (City of Martin, cityofmartin.net): the primary source. Its fluoride row reports a 0.52 mg/L average, range 0.48–0.59 mg/L, for groundwater from the Memphis Sands Aquifer. The report also prints the water department's phone number, 731-587-2676. What it doesn't say: the report contains no explicit "we add fluoride" statement.
- Martin Water Department Water Quality Report for 2024: corroborates with a 0.644 mg/L average, range 0.541–0.744 mg/L — a second consecutive year in the same narrow band just below the 0.7 mg/L target.
- CDC Fluoridation Census: the federal record of community water fluoridation; it lists Martin as adjusting fluoride since June 1967. Because the CCR carries no explicit adjustment statement, the "adjusted" status on this page rests on this census listing together with the two years of tightly clustered measured levels — the same evidentiary standard applied across this site.
- CDC My Water's Fluoride (nccd.cdc.gov/DOH_MWF): the CDC's per-system fluoridation lookup for Martin Water Department (TN0000435), available for independent confirmation.
- Benchmarks: CDC recommended level 0.7 mg/L; EPA enforceable maximum contaminant level (MCL) 4.0 mg/L; EPA secondary (non-enforceable) standard 2.0 mg/L. Children's toothpaste amounts per American Dental Association guidance.