ZipCheckup grade for 37742: C.
A mixed picture - some signals here are worth your attention.
Your top priority: test this home for radon. Check your ZIP → EPA radon map
Greenback, TN (37742): 1 Health-Based Violation Recorded for Mapped Water Systems - 62/100
EPA data combined for 3 water systems mapped to this ZIP (largest mapped system: South Blount Utility District)
Health-based violation records by water system:
EPA records for the water systems mapped to 37742 in Greenback, TN contain 8 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 1 are marked health-based.
Data source: U.S. Environmental Protection Agency (EPA) SDWIS
At a Glance
- Water EPA records for water systems mapped to this ZIP show 1 health-based violation and 7 non-health-based (since 2021).
- Lead The reported 90th-percentile lead result of 0.004 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
- Radon EPA Zone 1 - highest county-level potential. This is not a home measurement; test before any threshold comparison.
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Score Breakdown
Overall Home Safety Score: 62/100
This is the published model score. Component and domain values are shown independently; they are not added together on this page.
Canonical components
Required domains
Coverage: 4 of 4 components and 3 of 3 domains observed.
Model 4.0.0; series home-safety-v4-cross-vertical.
Safety & Health (7) CRITICAL
Your Water System
ZIP code 37742 in Greenback, Tennessee is mapped to the water system South Blount Utility District (EPA ID: TN0000643). This system provides water to approximately 53,864 people from surface water sources.
There are 3 community water systems serving this area.
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| South Blount Utility District | TN0000643 | 53,864 | Surface water |
| Tellico Area Services System | TN0000726 | 14,836 | Surface water |
| Friendsville Water Works | TN0000249 | 5,437 | Surface water |
Other Water Quality Reports in Tennessee
- 37010 (Adams) - 6 violations recorded for mapped water systems
- 37011 (Antioch)
- 37012 (Alexandria) - 104 violations recorded for mapped water systems
- 37013 (Antioch) - 3 violations recorded for mapped water systems
- 37014 (Arrington)
- 37015 (Ashland City) - 13 violations recorded for mapped water systems
- 37016 (Auburntown) - 8 violations recorded for mapped water systems
- 37018 (Beechgrove) - 18 violations recorded for mapped water systems
- 37019 (Belfast) - 1 violation recorded for mapped water systems
- 37020 (Bell Buckle) - 16 violations recorded for mapped water systems
- 37022 (Bethpage) - 14 violations recorded for mapped water systems
- 37023 (Big Rock) - 6 violations recorded for mapped water systems
- 37024 (Brentwood)
- 37025 (Bon Aqua)
- 37026 (Bradyville) - 2 violations recorded for mapped water systems
- 37027 (Brentwood) - 14 violations recorded for mapped water systems
- 37028 (Bumpus Mills) - 6 violations recorded for mapped water systems
- 37029 (Burns)
- 37030 (Carthage) - 41 violations recorded for mapped water systems
- 37031 (Castalian Springs) - 12 violations recorded for mapped water systems
Nearby Water Quality Reports
- 37801 (Maryville) - 6 mi - 10 violations recorded for mapped water systems
- 37737 (Friendsville) - 8 mi - 10 violations recorded for mapped water systems
- 37885 (Vonore) - 8 mi - 4 violations recorded for mapped water systems
- 37772 (Lenoir City) - 9 mi - 5 violations recorded for mapped water systems
- 37803 (Maryville) - 10 mi - 14 violations recorded for mapped water systems
- 37774 (Loudon) - 11 mi - 9 violations recorded for mapped water systems
- 37878 (Tallassee) - 11 mi - 12 violations recorded for mapped water systems
- 37771 (Lenoir City) - 12 mi - 7 violations recorded for mapped water systems
- 37802 (Maryville) - 13 mi
- 37701 (Alcoa) - 14 mi - 4 violations recorded for mapped water systems
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for South Blount Utility District (TN0000643) on EPA.gov.
4 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.
UCMR 5 PFAS monitoring: no reportable detections in available records
Available federal UCMR5 records for water systems mapped to ZIP code 37742 show no PFAS detections among the compounds tested, at the program's reporting levels.
The EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR5) required community and non-transient non-community water systems serving 3,300 or more people to test for 29 PFAS compounds and lithium between 2023 and 2025. Systems with no detections at the federal minimum reporting level had no results at or above that reporting level.
Environmental Hazards (10) MODERATE
Home & Infrastructure (6) OK
Cost & Community (9) HIGH
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Frequently Asked Questions
Is the tap water in 37742 safe to drink?
EPA SDWIS records 8 violations since 2021 across the water systems mapped to ZIP 37742 (primary system: South Blount Utility District), including 1 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.
Where does 37742's water come from?
The recorded water source for South Blount Utility District, a system mapped to ZIP code 37742, is Surface water. This system serves approximately 53,864 people.
How does Greenback water compare to the national average?
Greenback's Home Safety Score ranks lower than 80% of U.S. ZIP codes, and lower than 77% of ZIP codes within Tennessee.
How can I get my water tested in Greenback?
If South Blount Utility District supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.
Is lead a concern in 37742 tap water?
The Lead and Copper Rule record selected for 37742 reports a 90th-percentile lead result of 0.00401 mg/L for a water system mapped to this ZIP (record date 2025-12-31). The EPA action level is 0.015 mg/L. This result is below the EPA action level; it does not show the lead level in each home.
What is the radon risk for 37742?
37742 is mapped to a county in EPA Radon Zone 1 (high county-level radon potential; EPA recommends testing every home), located in Loudon County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.
How to cite this page
ZipCheckup. (2026). Greenback, TN (37742): 1 Health-Based Violation Recorded for Mapped Water Systems - 62/100. https://zipcheckup.com/report/37742/
@misc{zipcheckup-report-37742,
author = {{ZipCheckup}},
title = {{Greenback, TN (37742): 1 Health-Based Violation Recorded for Mapped Water Systems - 62/100}},
year = {2026},
url = {https://zipcheckup.com/report/37742/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 37742
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 37801 | Maryville, TN | 5.7 mi | C | 10 |
| 37737 | Friendsville, TN | 7.5 mi | C | 10 |
| 37885 | Vonore, TN | 8.4 mi | N/A | 4 |
| 37772 | Lenoir City, TN | 9.5 mi | D | 5 |
| 37803 | Maryville, TN | 9.8 mi | C | 14 |
| 37774 | Loudon, TN | 10.9 mi | C | 9 |
| 37878 | Tallassee, TN | 11.2 mi | N/A | 12 |
| 37771 | Lenoir City, TN | 11.9 mi | D | 7 |
| 37802 | Maryville, TN | 13.2 mi | N/A | 0 |
| 37701 | Alcoa, TN | 13.9 mi | C | 4 |
Nearby ZIP Code Reports
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