01The verdict: is Hornbreak water safe?
Hornbreak's drinking water has significant quality concerns based on EPA testing data. With a grade of A- (86.9/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 736 residents using groundwater (wells).
10 unresolved violations on record
EPA records show open compliance items for this system. Most are administrative, but unresolved items are worth watching.
See what was cited ↓Lead is well under the limit
90th-percentile lead is 1.0 ppb — beneath the 15 ppb federal action level and under the 5 ppb watch threshold.
See the trend ↓1 violation in the last five years
Recent compliance history is the best predictor of future problems — the year-by-year record is below.
See the record ↓Hornbreak's drinking water received a grade of A- (86.9 out of 100), indicating good water quality. The city's 1 water system serves approximately 736 residents using purchased ground water.
Lead levels were measured at 1.0 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program. The system has 39 violations on record, including 0 health-based violations. 10 remain unresolved.
Hornbreak ranks #134 out of 299 cities in Tennessee for water quality, placing it mid-range in the state. Hornbreak purchases its water from a regional wholesaler, meaning quality depends on both the supplier's treatment and the local distribution system's condition. As a small community water system, Hornbreak may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
02What's in Hornbreak's water
Every contaminant flagged in Hornbreak, on one shared scale: distance to its own legal limit. The red line is the limit — anything past it is out of compliance, and the closer a bar gets, the less headroom the system has.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 1.0 | 15 | ppb | Inorganic | Safe |
Cities ranked by 90th-percentile lead PF PFAS in Tennessee
Cities ranked by compounds detected Cu Copper in Tennessee
Cities ranked by 90th-percentile copper
03Hornbreak's ten-year track record
Each box is one year. A green check means no EPA violations; a numbered badge counts that year's violations — red if any were health-based, amber if they were monitoring or paperwork issues. The system has 39 violations on record, including 0 health-based violations. 10 remain unresolved.
5 of the last ten years were clean. The numbered years had EPA violations — red when any were health-based, amber when they were paperwork or missed-testing issues.
▼ Down 6 ppb since 1993. Latest reading: 1 ppb (2025) — 7% of the action level. Sampled at higher-risk homes (90th percentile).
04Where Hornbreak's water comes from
Hornbreak purchases its water supply from a regional wholesale provider rather than treating raw water directly.
Purchased Groundwater
Water is bought from a regional wholesaler; quality starts at the supplier's intake and treatment.
Wholesale supplier
Primary treatment happens at the wholesaler; the local utility maintains disinfectant residual in its pipes.
1 system
1 water system, operated under local government ownership.
736 people
Residents served across Hornbreak's service area.
Water quality depends on both the wholesaler's treatment standards and the condition of Hornbreak's local distribution pipes and storage facilities. Purchased water systems are common in suburban areas and smaller communities that lack the infrastructure for independent treatment. The system is operated by local government ownership and serves approximately 736 people through 1 water system.
| System name | PWSID | Population | Source |
|---|---|---|---|
| SAMBURG UTILITY DISTRICT | TN0000607 | 736 | Purchased Groundwater |
05Pressure on Hornbreak's watershed
Outside forces that shape what reaches the treatment plant. None of these is a verdict on the tap by itself — but each adds pressure worth knowing about.
Drought
Obion County is in D1 (moderate drought) per the U.S. Drought Monitor (week of Jul 2026). Drought can raise disinfection-byproduct levels and taste/odor issues as utilities draw from lower reservoirs.
06How Hornbreak compares
Scores for nearby Tennessee cities on one line, with the average marked.
dashed line = Tennessee average (73/100)
Hornbreak scores 86.9/100 — above the Tennessee average of 73/100. It outscores 9 of 10 nearby cities. Full Tennessee rankings →
69 / 100CMemphis, TN
66.2 / 100CKnoxville, TN
55 / 100BMurfreesboro, TN
80.6 / 100BClarksville, TN
75.5 / 100CChattanooga, TN
65.5 / 100
Compare all cities in the county — grades, violations, and contaminant data side by side.→
07What to do at home
Steps matched to what testing actually found in Hornbreak's water — not generic advice.
A basic carbon filter still helps
Hornbreak's water meets federal standards, but a simple carbon filter improves taste and adds a margin of safety against short-term issues.
Compare tested filters →Read your utility's annual report
Every utility must publish a yearly Consumer Confidence Report with its own testing results. It pairs well with the independent data on this page.
How to read a CCR →Watch for Hornbreak alerts
We refresh EPA data monthly and surface new violations, advisories, and boil-water notices for your county on this page.
All water alerts →Frequently asked questions
Is Hornbreak, TN tap water safe to drink?
Hornbreak's water quality earned a grade of A- (86.9/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #134 out of 299 cities tested in Tennessee.
What contaminants are in Hornbreak's water?
Lead was measured at 1.0 ppb (90th percentile). 39 violations are on record.
How is Hornbreak's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in Hornbreak?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Hornbreak's water come from?
Hornbreak's water is sourced from Purchased ground water. The city has 1 water system serving approximately 736 residents.
Is Hornbreak's groundwater at risk of contamination?
Hornbreak uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 39 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.
How does Hornbreak's water compare to other cities?
Hornbreak ranks #134 out of 299 cities in Tennessee (better than 55% of state cities) and #4372 out of 15382 cities nationally (72th percentile). The grade of A- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Hornbreak's small water system affect quality?
Hornbreak's system serves approximately 736 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has 39 violations on record.