Water System Report TN

Calhoun-charleston U.d.

EPA ID: TN0000106 ยท 2,959 people served ยท 6 ZIP codes

ZipCheckup's reading of EPA records for Calhoun-charleston U.d. (TN0000106): no drinking-water violations recorded since 2021. Water monitoring for Calhoun-charleston U.d.: no violations on record, 2,959 residents.

Data: EPA SDWIS

2,959
People Served
6
ZIP Codes Served
0
Violations (since 2021)
Surface Water
Water Source
0.0009 mg/L
Most recent lead 90th percentile on record (monitoring period ending 2025-12-31)
0
Contaminants Flagged
$190K
Median Home Value in ZIP Codes Served

Service Area Map

Coverage area for Calhoun-charleston U.d. Source: EPA SDWIS service area boundaries.

Service area boundary

Demographics of ZIP Codes Served

$64,073
Median Household Income
62,160
Population of ZIP Codes Served (Census)
49%
Disadvantaged Population
63th
Poverty Percentile
58th
Energy Burden Percentile
49%
Pre-1986 Housing

The ZIP codes associated with Calhoun-charleston U.d. have a median household income of $64,073 and about 62,160 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 49% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.

Environmental Justice Note: On average, 49% of census tracts in the counties mapped to this service area are designated disadvantaged by the federal Climate and Economic Justice Screening Tool (CEJST, 2022 version). Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.

๐ŸŒŠ Where Does Your Water Come From?

Surface Water

Calhoun-charleston U.d.'s water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.

Moderate Risk
Source Contamination Risk
42th
Wastewater Discharge Proximity
18th
Superfund Site Proximity

Infrastructure Risk

40 yr
Estimated pipe age (modeled from housing age)
Copper
Likely pipe material (modeled)
30 yr
Est. Remaining Life
Stable
Decay Status
Installed 57% of expected lifespan used (estimate) End of life

PFAS in ZIP Codes This System Serves

PFAS ("forever chemicals") have been reported in samples from water systems associated with the ZIP codes in this system's area. These results can come from other water systems serving the same ZIP codes; check the UCMR5 section for any results reported for this system. 7 detections recorded.

Health concern: Exposure to certain PFAS has been associated with some cancers and with immune and developmental effects; effects differ by compound. Many PFAS break down very slowly in the environment.
Recommended filter: An activated carbon filter certified under NSF/ANSI 53 or a reverse osmosis system certified under NSF/ANSI 58 for the PFAS listed in its certification. Find the right filter โ†’

Comparable Water Systems

Similar-sized systems in Tennessee

3 violations
1 violation
Sneedville U.d.
3,044 people
1 violation
2 violations
3 violations

Estimated Remediation Costs

Average estimated costs across ZIP codes served by this system

PFAS Treatment
PFAS Treatment $500
Total Estimated Cost $500

Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.

Cost of Inaction

Illustrative per-household cost scenario based on stated assumptions:

PFAS Exposure - Lifetime Cost $1,000

Per person (emerging research est.)

Estimated Cumulative Cost Per Household

5 years
$165
10 years
$330
20 years
$660

Compare: Estimated remediation cost is $500 (one-time) vs. $330 in estimated inaction costs over 10 years.

Individual costs vary by household size, property, and health factors. These estimates are for awareness, not financial advice.

System Overview

Calhoun-charleston U.d. (EPA ID: TN0000106) is a community water system in Tennessee that serves approximately 2,959 people from surface water sources.

This system provides water to 6 ZIP codes across 6 communities.

Violation History

No accepted violation records in the 2021-2026 window - The accepted EPA ECHO 2026Q2 snapshot contains zero violation records for this system whose record year falls from 2021 through 2026, inclusive. This is not a tap-water safety guarantee.

Lead & Copper

EPA Lead and Copper Rule evidence attributed directly to this water system:

Lead Level Exceeds Action Level Sample Date
0.0009 mg/L No 2025-12-31

No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.

Need help with your water quality?

Typical cost: Water test: typically $20โ€“$50 (DIY kit) ยท Professional inspection: $150โ€“$400

Find the Right Water Filter

Free tip: Ask your water utility whether running cold water for 2 minutes is enough to flush your plumbing before drinking.

ZIP Codes Served

Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by TN or modeled from parcel and building-footprint data.

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Calhoun-charleston U.d. (TN0000106) on EPA.gov.

Frequently Asked Questions

Is Calhoun-charleston U.d. water safe to drink?

The accepted 2026Q2 ECHO snapshot contains zero violation records for Calhoun-charleston U.d. in the inclusive 2021-2026 record-year window. This is a compliance-record finding, not a guarantee about water at a specific tap.

How many people does Calhoun-charleston U.d. serve?

Calhoun-charleston U.d. serves approximately 2,959 people across 6 ZIP codes in Tennessee.

Where does Calhoun-charleston U.d. get its water?

The primary water source is surface water.

Frequently Asked Questions

Should I use a water filter? ▼
No EPA drinking-water violations since 2021 are on record for Calhoun-charleston U.d.; this page does not establish contaminant levels at your tap. That is a compliance record, not a guarantee about the water at your tap; a certified filter can target a specific contaminant you are concerned about.
How many people does Calhoun-charleston U.d. serve? ▼
Calhoun-charleston U.d. serves approximately 2,959 people with drinking water across 6 ZIP codes.
What is Calhoun-charleston U.d.'s water source? ▼
Calhoun-charleston U.d. draws water from surface water sources. Source type affects which contaminants are most likely to be present.
Is there lead in Calhoun-charleston U.d.'s water? ▼
The most recent 90th-percentile lead result on record is 0.0009 mg/L (sample period ending 2025-12-31). This is at or below the EPA lead action level, which triggers system action and is not a safe level; the EPA health goal for lead is zero.
What is the demographic profile of the ZIP codes associated with Calhoun-charleston U.d.? ▼
The ZIP codes mapped to Calhoun-charleston U.d. have a median household income of $64,073 (Census ZIP-code estimate). In CEJST data, 49% of census tracts in the counties mapped to this area are designated disadvantaged (average across mapped ZIP codes), which may indicate greater vulnerability to environmental health risks.
Where does Calhoun-charleston U.d. get its water? ▼
Calhoun-charleston U.d.'s water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap. Based on the available data, the modeled source-contamination category is moderate; test local water to assess actual exposure.

How to cite this page

APA ZipCheckup. (n.d.). Calhoun-charleston U.d. Water Quality Report, TN. https://zipcheckup.com/water-system/tn0000106/
BibTeX
@misc{zipcheckup-water-system-tn0000106,
  author = {{ZipCheckup}},
  title  = {{Calhoun-charleston U.d. Water Quality Report, TN}},
  year   = {n.d.},
  url    = {https://zipcheckup.com/water-system/tn0000106/}
}
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