City water profile

Water hardness in Columbus

Find official utility reports, understand hardness, and check the water system serving your home in Columbus, Montana.

Utility-reported hardness

Not yet available

Check your provider and source →

State comparison: Unavailable
Evidence comparison rank: —
Matched utilities: 5
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.

Columbus Town Of

MT0000185 · Groundwater · 1,900 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: 0.004 mg/L
Action level: 0.015 mg/L

27% of the listed benchmark

Monitoring period: Jan 1, 2015 to Dec 31, 2017

Copper (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Above action level

Reported level: 1.4 mg/L
Action level: 1.3 mg/L

108% of the listed benchmark

Monitoring period: Jan 1, 1996 to Jun 30, 1996

Violation history (0)

No record returned in this imported window. This is not a guarantee of tap-water safety.

Country Haven Estates Whispering Pines

MT0004376 · Groundwater · 100 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 mg/L
Action level: 0.015 mg/L

0% of the listed benchmark

Monitoring period: Jan 1, 2025 to Jun 30, 2025

Violation history (80)

Imported violation history for Country Haven Estates Whispering Pines
Rule	Status	Period
Revised Total Coliform Rule	Resolved	Aug 1, 2025 to Aug 31, 2025
Revised Total Coliform Rule	Resolved	May 1, 2025 to May 31, 2025
Lead and Copper Rule	Resolved	Apr 1, 2025 to May 20, 2025
Lead and Copper Rule	Resolved	Oct 1, 2024 to May 20, 2025
Revised Total Coliform Rule	Resolved	Aug 1, 2024 to Aug 31, 2024
E. COLI	Resolved	Nov 21, 2023 to Jan 22, 2023
Revised Total Coliform Rule	Resolved	Oct 1, 2023 to Oct 31, 2023
Combined Radium (-226 and -228)	Resolved	Apr 1, 2023 to Jun 30, 2023
Gross Alpha, Excl. Radon and U	Resolved	Apr 1, 2023 to Jun 30, 2023
Endrin	Resolved	Apr 1, 2023 to Jun 30, 2023
Di(2-ethylhexyl) adipate	Resolved	Apr 1, 2023 to Jun 30, 2023
OXAMYL	Resolved	Apr 1, 2023 to Jun 30, 2023
Simazine	Resolved	Apr 1, 2023 to Jun 30, 2023
Di(2-ethylhexyl) phthalate	Resolved	Apr 1, 2023 to Jun 30, 2023
Picloram	Resolved	Apr 1, 2023 to Jun 30, 2023
Carbofuran	Resolved	Apr 1, 2023 to Jun 30, 2023
Heptachlor	Resolved	Apr 1, 2023 to Jun 30, 2023
Heptachlor epoxide	Resolved	Apr 1, 2023 to Jun 30, 2023
2,4,5-TP	Resolved	Apr 1, 2023 to Jun 30, 2023
HEXACHLOROBENZENE	Resolved	Apr 1, 2023 to Jun 30, 2023
Chlordane	Resolved	Apr 1, 2023 to Jun 30, 2023
Endrin	Resolved	Apr 1, 2023 to Jun 30, 2023
BHC-GAMMA	Resolved	Apr 1, 2023 to Jun 30, 2023
Methoxychlor	Resolved	Apr 1, 2023 to Jun 30, 2023
OXAMYL	Resolved	Apr 1, 2023 to Jun 30, 2023
Di(2-ethylhexyl) phthalate	Resolved	Apr 1, 2023 to Jun 30, 2023
Picloram	Resolved	Apr 1, 2023 to Jun 30, 2023
Hexachlorocyclopentadiene	Resolved	Apr 1, 2023 to Jun 30, 2023
Carbofuran	Resolved	Apr 1, 2023 to Jun 30, 2023
Atrazine	Resolved	Apr 1, 2023 to Jun 30, 2023
Heptachlor	Resolved	Apr 1, 2023 to Jun 30, 2023
2,4-D	Resolved	Apr 1, 2023 to Jun 30, 2023
2,4,5-TP	Resolved	Apr 1, 2023 to Jun 30, 2023
Pentachlorophenol	Resolved	Apr 1, 2023 to Jun 30, 2023
Chlordane	Resolved	Apr 1, 2023 to Jun 30, 2023
Benzo(a)pyrene	Resolved	Apr 1, 2023 to Jun 30, 2023
Toxaphene	Resolved	Apr 1, 2023 to Jun 30, 2023
LASSO	Resolved	Apr 1, 2023 to Jun 30, 2023
Gross Alpha, Excl. Radon and U	Resolved	Apr 1, 2023 to Jun 30, 2023
Dinoseb	Resolved	Apr 1, 2023 to Jun 30, 2023
Di(2-ethylhexyl) adipate	Resolved	Apr 1, 2023 to Jun 30, 2023
Dalapon	Resolved	Apr 1, 2023 to Jun 30, 2023
Heptachlor epoxide	Resolved	Apr 1, 2023 to Jun 30, 2023
Combined Radium (-226 and -228)	Resolved	Apr 1, 2023 to Jun 30, 2023
BHC-GAMMA	Resolved	Apr 1, 2023 to Jun 30, 2023
Methoxychlor	Resolved	Apr 1, 2023 to Jun 30, 2023
Pentachlorophenol	Resolved	Apr 1, 2023 to Jun 30, 2023
Hexachlorocyclopentadiene	Resolved	Apr 1, 2023 to Jun 30, 2023
Atrazine	Resolved	Apr 1, 2023 to Jun 30, 2023
2,4-D	Resolved	Apr 1, 2023 to Jun 30, 2023
LASSO	Resolved	Apr 1, 2023 to Jun 30, 2023
Benzo(a)pyrene	Resolved	Apr 1, 2023 to Jun 30, 2023
HEXACHLOROBENZENE	Resolved	Apr 1, 2023 to Jun 30, 2023
Dinoseb	Resolved	Apr 1, 2023 to Jun 30, 2023
Toxaphene	Resolved	Apr 1, 2023 to Jun 30, 2023
Simazine	Resolved	Apr 1, 2023 to Jun 30, 2023
Dalapon	Resolved	Apr 1, 2023 to Jun 30, 2023
Cadmium	Resolved	Jan 1, 2023 to Dec 31, 2025
Fluoride	Resolved	Jan 1, 2023 to Dec 31, 2025
Beryllium, Total	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
Barium	Resolved	Jan 1, 2023 to Dec 31, 2025
Chromium	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
Nickel	Resolved	Jan 1, 2023 to Dec 31, 2025
Antimony, Total	Resolved	Jan 1, 2023 to Dec 31, 2025
Beryllium, Total	Resolved	Jan 1, 2023 to Dec 31, 2025
Arsenic	Resolved	Jan 1, 2023 to Dec 31, 2025
Chromium	Resolved	Jan 1, 2023 to Dec 31, 2025
Cadmium	Resolved	Jan 1, 2023 to Dec 31, 2025
Arsenic	Resolved	Jan 1, 2023 to Dec 31, 2025
Thallium, Total	Resolved	Jan 1, 2023 to Dec 31, 2025
Nickel	Resolved	Jan 1, 2023 to Dec 31, 2025
Barium	Resolved	Jan 1, 2023 to Dec 31, 2025
Antimony, Total	Resolved	Jan 1, 2023 to Dec 31, 2025
Mercury	Resolved	Jan 1, 2023 to Dec 31, 2025
Selenium	Resolved	Jan 1, 2023 to Dec 31, 2025
Nitrate-Nitrite	Resolved	Jan 1, 2022 to Dec 31, 2022

Hilltop Water

MT0005205 · Groundwater · 50 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 mg/L
Action level: 0.015 mg/L

0% of the listed benchmark

Monitoring period: Jul 1, 2025 to Dec 31, 2025

Violation history (0)

No record returned in this imported window. This is not a guarantee of tap-water safety.

Eagle Mountain Rural Pws

MT0004461 · Groundwater · 50 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: 0.003 mg/L
Action level: 0.015 mg/L

20% of the listed benchmark

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

Violation history (1)

Imported violation history for Eagle Mountain Rural Pws
Rule	Status	Period
Consumer Confidence Rule	Resolved	Jul 1, 2024 to Aug 13, 2024

Sherwood Water Station

MT0004059 · Groundwater · 25 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 mg/L
Action level: 0.015 mg/L

0% of the listed benchmark

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

Violation history (5)

Imported violation history for Sherwood Water Station
Rule	Status	Period
Consumer Confidence Rule	Resolved	Jul 1, 2024 to Aug 13, 2024
Revised Total Coliform Rule	Resolved	Jun 1, 2023 to Jun 30, 2023
Revised Total Coliform Rule	Resolved	Mar 1, 2023 to Mar 31, 2023
Revised Total Coliform Rule	Resolved	Dec 1, 2021 to Dec 31, 2021
Revised Total Coliform Rule	Resolved	Feb 1, 2021 to Feb 28, 2021

City summary

What the indexed records say

Columbus has 1 published ZIP profile across Stillwater County. No qualifying nearby hardness observation is available for the city.

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 hard0 ZIPs

0 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: — miles
Profiles with evidence: 0/1

Confidence labels

High: 0Moderate: 0Low: 0

Observation window: unavailable to unavailable.

ZIP directory

Water reports in Columbus

Open a ZIP for site-level provenance and measurements.

ZIP code

59019

No estimate

—

Nearest site: — mi
Confidence: —

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 Montana communities

Absarokee

Stillwater County

— No median

Rapelje

Stillwater County

— No median

Babb

Glacier County

59 PPM median

Basin

Jefferson County

38 PPM median

Bigfork

Lake County

193 PPM median

Clancy

Jefferson County

38 PPM median

Search all 133 Montana cities →

Questions people ask

About water in Columbus

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.