City water profile

Water hardness in Mill Spring

Find official utility reports, understand hardness, and check the water system serving your home in Mill Spring, Missouri.

Utility-reported hardness

Not yet available

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State comparison: Unavailable
Evidence comparison rank: —
Matched utilities: 1
Active health records: 0

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 →

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.

Mill Spring Pws

MO4010527 · Groundwater · 112 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 (1)

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: 0.0011 mg/L
Action level: 0.015 mg/L

7% of the listed benchmark

Monitoring period: Jan 1, 2021 to Dec 31, 2023

Violation history (56)

Imported violation history for Mill Spring Pws
Rule	Status	Period
Groundwater Rule	Resolved	Oct 1, 2025 to Oct 31, 2025
Groundwater Rule	Resolved	Sep 1, 2025 to Sep 30, 2025
Groundwater Rule	Resolved	Jul 1, 2025 to Jul 31, 2025
Groundwater Rule	Resolved	Feb 1, 2025 to Feb 28, 2025
Nitrate-Nitrite	Resolved	Jan 1, 2025 to Dec 31, 2025
Groundwater Rule	Resolved	Oct 1, 2024 to Oct 31, 2024
Groundwater Rule	Resolved	May 1, 2024 to May 31, 2024
Groundwater Rule	Resolved	Dec 1, 2023 to Dec 31, 2023
Revised Total Coliform Rule	Resolved	Dec 1, 2023 to Dec 31, 2023
Groundwater Rule	Resolved	Nov 1, 2023 to Nov 30, 2023
Consumer Confidence Rule	Resolved	Jul 1, 2023 to Sep 24, 2024
Revised Total Coliform Rule	Resolved	Mar 1, 2023 to Mar 31, 2023
Barium	Resolved	Jan 1, 2023 to Dec 31, 2025
Chromium	Resolved	Jan 1, 2023 to Dec 31, 2025
Thallium, Total	Resolved	Jan 1, 2023 to Dec 31, 2025
Selenium	Resolved	Jan 1, 2023 to Dec 31, 2025
1,2,4-Trichlorobenzene	Resolved	Jan 1, 2023 to Dec 31, 2025
o-Dichlorobenzene	Resolved	Jan 1, 2023 to Dec 31, 2025
p-Dichlorobenzene	Resolved	Jan 1, 2023 to Dec 31, 2025
1,1-Dichloroethylene	Resolved	Jan 1, 2023 to Dec 31, 2025
trans-1,2-Dichloroethylene	Resolved	Jan 1, 2023 to Dec 31, 2025
1,1,1-Trichloroethane	Resolved	Jan 1, 2023 to Dec 31, 2025
Carbon tetrachloride	Resolved	Jan 1, 2023 to Dec 31, 2025
1,1,2-Trichloroethane	Resolved	Jan 1, 2023 to Dec 31, 2025
Tetrachloroethylene	Resolved	Jan 1, 2023 to Dec 31, 2025
Benzene	Resolved	Jan 1, 2023 to Dec 31, 2025
Toluene	Resolved	Jan 1, 2023 to Dec 31, 2025
Beryllium, Total	Resolved	Jan 1, 2023 to Dec 31, 2025
Vinyl chloride	Resolved	Jan 1, 2023 to Dec 31, 2025
Antimony, Total	Resolved	Jan 1, 2023 to Dec 31, 2025
Styrene	Resolved	Jan 1, 2023 to Dec 31, 2025
DICHLOROMETHANE	Resolved	Jan 1, 2023 to Dec 31, 2025
1,2-Dichloropropane	Resolved	Jan 1, 2023 to Dec 31, 2025
1,2-Dichloroethane	Resolved	Jan 1, 2023 to Dec 31, 2025
Ethylbenzene	Resolved	Jan 1, 2023 to Dec 31, 2025
Xylenes, Total	Resolved	Jan 1, 2023 to Dec 31, 2025
CHLOROBENZENE	Resolved	Jan 1, 2023 to Dec 31, 2025
cis-1,2-Dichloroethylene	Resolved	Jan 1, 2023 to Dec 31, 2025
Cadmium	Resolved	Jan 1, 2023 to Dec 31, 2025
Trichloroethylene	Resolved	Jan 1, 2023 to Dec 31, 2025
Arsenic	Resolved	Jan 1, 2023 to Dec 31, 2025
Fluoride	Resolved	Jan 1, 2023 to Dec 31, 2025
Mercury	Resolved	Jan 1, 2023 to Dec 31, 2025
Revised Total Coliform Rule	Resolved	Nov 1, 2022 to Nov 30, 2022
Groundwater Rule	Resolved	Oct 1, 2022 to Oct 31, 2022
Groundwater Rule	Resolved	Sep 1, 2022 to Sep 30, 2022
Groundwater Rule	Resolved	Jul 1, 2022 to Jul 31, 2022
Revised Total Coliform Rule	Resolved	May 1, 2022 to May 31, 2022
Revised Total Coliform Rule	Resolved	Apr 1, 2022 to Apr 30, 2022
Revised Total Coliform Rule	Resolved	Mar 1, 2022 to Mar 31, 2022
Total Haloacetic Acids (HAA5)	Resolved	Jan 1, 2022 to Dec 31, 2022
TTHM	Resolved	Jan 1, 2022 to Dec 31, 2022
Groundwater Rule	Resolved	Nov 1, 2021 to Nov 30, 2021
Groundwater Rule	Resolved	Oct 1, 2021 to Oct 31, 2021
Consumer Confidence Rule	Resolved	Jul 1, 2021 to Dec 6, 2021
Nitrate-Nitrite	Resolved	Jan 1, 2021 to Dec 31, 2021

City summary

What the indexed records say

Mill Spring has 1 published ZIP profile across Wayne County. The regional-evidence median is 209 PPM. The city does not meet the stricter comparison standard.

Because only one ZIP is represented, the city median and range are the same local estimate. It should not be read as multiple independent samples across the community.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs

Moderately hard0 ZIPs

Hard0 ZIPs

Very hard1 ZIP

1 of 1 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.

Evidence quality

Distance, dates, and confidence

Median nearest distance: 7.9 miles
Profiles with evidence: 1/1

Confidence labels

High: 0Moderate: 1Low: 0

Observation window: Apr 28, 2016 to Jun 21, 2021.

ZIP directory

Water reports in Mill Spring

Open a ZIP for site-level provenance and measurements.

ZIP code

63952

Very Hard

209 PPM

Nearest site: 7.9 mi
Confidence: Moderate

View full ZIP evidence →

Practical next steps

Move from index to evidence

1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
3. Use a measured hardness result. Confirm health concerns or treatment sizing with the right method.

Continue comparing

Other Missouri communities

Greenville

Wayne County

263 PPM median

Piedmont

Wayne County

107 PPM median

Williamsville

Wayne County

263 PPM median

Hannibal

Marion County

209 PPM median

Ellington

Reynolds County

209 PPM median

Ellsinore

Carter County

209 PPM median

Search all 504 Missouri cities →

Questions people ask

About water in Mill Spring

Is the water hard?

Check the utility-reported result above when available. Nearby environmental samples cannot establish tap-water hardness. Ask your provider or test your tap.

Is the tap water safe?

Compliance history is utility-wide and cannot guarantee conditions at every tap. Check current notices and test when address-specific evidence is needed.

Do I need treatment?

Choose treatment only after confirming the problem at the property. A softener targets hardness; contaminant treatment requires a matching, verified performance claim.