How hard is the water in Smithville, TN?

Utility-reported hardness is unavailable in this index. Regional environmental samples cannot establish tap-water hardness. Ask your provider or test your tap.

Local water dashboard

Official source aggregation

Water quality in Smithville, TN 37166

Q: Is tap water safe in Smithville?

EPA SDWIS shows no active health-based violation in this profile's reporting window. That is not the same as proving every contaminant is absent, and federal data can lag state and utility records.

Regional hardness evidence, possible serving systems, EPA compliance history, and the measurements that are—and are not—available for Dekalb County.

Historical measurement record needs context

Largest possible serving system: Smithville Water System
Source water: Surface water
County: Dekalb County
Profile updated: May 14, 2026

Your tap water

What does the utility report?

Match the utility name to your water bill. These results describe the utility’s water, not a test at your home. A ZIP can include several water systems.

Utility hardness unavailable in this index

Nearby river or groundwater samples cannot tell us the hardness coming out of your tap. Ask your water provider for total hardness as CaCO₃, or test it at home.

Find an official utility report →

Convert a hardness result →Test your tap →

At a glance

What the current records say

EPA quarter 2026Q2

Utility-reported hardness

Unavailable

Ask your provider or test your tap

All possible systems

No active flag

0 active health-based records

Measurements by utility

Choose your provider

Each result belongs to a specific system.

Utility match

1 system

Serves 7,049 people system-wide

Match the name on your water bill

Your utility’s measurements and compliance records

These are possible serving systems. A record for one system does not apply to every home in this ZIP. Confirm your provider before interpreting a measurement or notice. Federal records can lag current utility notices.

EPA snapshot: 2026Q2. Historical window begins Jan 1, 2021.

Smithville Water System

TN0000637 · Surface water · 7,049 people served system-wide

The system names this served city; Census place overlap links the city to this ZCTA.

No active health-based record in this imported snapshot

Find this utility’s official report →

Measurements (2)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level

Reported level: 0.001 mg/L
Action level: 0.015 mg/L

7% of the listed benchmark

Monitoring period: Jan 1, 2023 to Dec 31, 2025

TTHM

EPA SDWIS reported health-based violation

Reported violation

Reported level: 0.0814 MG/L
Maximum contaminant level: 0.08 MG/L

102% of the listed benchmark

Monitoring period: Jan 1, 2023 to Mar 31, 2023

Violation history (14)

Imported violation history for Smithville Water System
Rule	Status	Period
Consumer Confidence Rule	Unaddressed	Jul 1, 2024
TTHM	Resolved	Oct 1, 2023 to Dec 31, 2023
Total Haloacetic Acids (HAA5)	Resolved	Oct 1, 2023 to Dec 31, 2023
Consumer Confidence Rule	Unaddressed	Jul 1, 2023
Revised Total Coliform Rule	Resolved	Mar 1, 2023 to Mar 31, 2023
TTHMHealth-based	Resolved	Jan 1, 2023 to Mar 31, 2023
Chlorine	Resolved	Jan 1, 2023 to Mar 31, 2023
Consumer Confidence Rule	Resolved	Jul 1, 2022 to Aug 19, 2022
Consumer Confidence Rule	Unaddressed	Jul 1, 2022
Public Notice	Unaddressed	Dec 15, 2021
Consumer Confidence Rule	Addressed	Jul 1, 2021
Lead and Copper Rule	Addressed	Jan 1, 2020
Public Notice	Unaddressed	Feb 16, 2019
Lead and Copper Rule	Unaddressed	Jun 1, 2017

Hardness estimate unavailable

No responsible local estimate yet

We did not find enough qualifying recent USGS hardness observations within 25 miles of this ZIP centroid. We leave the value blank instead of substituting a state average. Ask the serving utility or test the household tap for a property-specific result.

Evidence-first next steps

Confirm the problem before choosing treatment

This profile can help you ask the right question. It cannot select equipment for a property without a current result from the serving utility or the tap.

Confirm the serving system

ZIP boundaries and utility service areas do not perfectly match. Verify the system on a water bill before relying on system-wide records.

Read the current utility report

Use the current Consumer Confidence Report for treated-water results and official notices.

Find an official utility report →

Test for the decision you face

Ask the utility for hardness or test at the tap. For health concerns, use a certified laboratory and targeted analysis.

Convert your hardness test result →

Frequently asked

Water questions for Smithville

Is tap water safe in Smithville?+

EPA ECHO shows no active health-based violation for the associated systems in this reporting snapshot. This does not prove every contaminant is absent; federal records can lag and household plumbing can change tap conditions.

How hard is the water?+

Utility-reported hardness is unavailable in this index. Regional samples do not establish tap-water hardness. Ask your provider or test your tap.

Do I need a water softener?+

Confirm hardness at your tap and consider actual scale or spotting before choosing treatment. Regional environmental values cannot determine whether you need a softener. A softener addresses hardness, not every contaminant.