Utility-reported hardness
Unavailable
Ask your provider or test your tap
Local water dashboard
Official source aggregationWater quality in Whitefish, MT 59937
Regional hardness evidence, possible serving systems, EPA compliance history, and the measurements that are—and are not—available for Flathead County.
Historical measurement record needs context
- Largest possible serving system
- Whitefish City Of
- Source water
- Surface water + Groundwater
- County
- Flathead County
- Profile updated
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 →At a glance
What the current records say
EPA quarter 2026Q2
All possible systems
No active flag
0 active health-based records
Measurements by utility
Each result belongs to a specific system.
Utility match
10 systems
Serves 10,418 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.
Whitefish City Of
MT0000357 · Surface water · 10,418 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
- Reported level
- 0.002 mg/L
- Action level
- 0.015 mg/L
13% of the listed benchmark
Monitoring period: Jan 1, 2023 to Dec 31, 2025
Violation history (0)
No record returned in this imported window. This is not a guarantee of tap-water safety.
Big Mountain Water Company
MT0000060 · Groundwater · 2,435 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
- Reported level
- 0.007 mg/L
- Action level
- 0.015 mg/L
47% of the listed benchmark
Monitoring period: Jan 1, 2025 to Dec 31, 2025
Violation history (23)
| Rule | Status | Period |
|---|---|---|
| BHC-GAMMA | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| Dalapon | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| Di(2-ethylhexyl) adipate | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| OXAMYL | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| Atrazine | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| Heptachlor | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| Benzo(a)pyrene | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| Chlordane | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| Simazine | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| Hexachlorocyclopentadiene | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| 2,4,5-TP | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| Endrin | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| Methoxychlor | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| Toxaphene | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| LASSO | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| Heptachlor epoxide | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| Picloram | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| Di(2-ethylhexyl) phthalate | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| Carbofuran | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| Dinoseb | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| HEXACHLOROBENZENE | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| Pentachlorophenol | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| 2,4-D | Resolved | Jan 1, 2024 to Mar 31, 2024 |
Ptarmigan Village Inc
MT0000133 · Groundwater · 600 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
- Reported level
- 0.003 mg/L
- Action level
- 0.015 mg/L
20% of the listed benchmark
Monitoring period: Jan 1, 2015 to Dec 31, 2017
Violation history (1)
| Rule | Status | Period |
|---|---|---|
| Di(2-ethylhexyl) phthalate | Resolved | Apr 1, 2025 to Jun 30, 2025 |
Flathead Co Water District No 8
MT0000261 · Groundwater · 475 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
- 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 (0)
No record returned in this imported window. This is not a guarantee of tap-water safety.
Forest Acres Tr Pk Whitefish
MT0000064 · Groundwater · 390 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
- 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 (2)
| Rule | Status | Period |
|---|---|---|
| Consumer Confidence Rule | Resolved | Jul 1, 2023 to Jul 5, 2023 |
| Consumer Confidence Rule | Resolved | Jul 1, 2021 to Aug 6, 2021 |
Iron Horse Homeowners Assoc
MT0004052 · Groundwater · 335 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
- 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 (0)
No record returned in this imported window. This is not a guarantee of tap-water safety.
Country Lake Homes Whitefish
MT0003031 · Groundwater · 260 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
- Reported level
- 0.001 mg/L
- Action level
- 0.015 mg/L
7% of the listed benchmark
Monitoring period: Jan 1, 2017 to Dec 31, 2019
Violation history (1)
| Rule | Status | Period |
|---|---|---|
| Lead and Copper Rule | Resolved | Oct 1, 2022 to Jun 25, 2023 |
Happy Valley Water Dist B Kspl
MT0001984 · Groundwater · 207 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
- Reported level
- 0.002 mg/L
- Action level
- 0.015 mg/L
13% of the listed benchmark
Monitoring period: Jan 1, 2023 to Dec 31, 2025
Violation history (0)
No record returned in this imported window. This is not a guarantee of tap-water safety.
Northwoods Water System Coop Inc
MT0001736 · Groundwater · 135 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
- Reported level
- 0.003 mg/L
- Action level
- 0.015 mg/L
20% of the listed benchmark
Monitoring period: Jan 1, 2023 to Dec 31, 2025
Violation history (0)
No record returned in this imported window. This is not a guarantee of tap-water safety.
Alpine Village Wua
MT0003229 · Groundwater · 125 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
- Reported level
- 0.066 mg/L
- Action level
- 0.015 mg/L
440% of the listed benchmark
Monitoring period: Jan 1, 2023 to Dec 31, 2025
Violation history (1)
| Rule | Status | Period |
|---|---|---|
| Lead and Copper Rule | Resolved | Dec 30, 2024 to Feb 4, 2025 |
Hardness meter
What does nearby environmental evidence show?
73.7
PPM as CaCO₃
Moderately Hard
PPM
73.7
GPG
4.3
Regional environmental evidence
USGS hardness classification scale
73.7 PPM
Soft
0–60Moderate
61–120Hard
121–180Very hard
181+
0–60Moderate
61–120Hard
121–180Very hard
181+
Parts per million
73.7
mg/L as CaCO₃ equivalent
Grains per gallon
4.3
1 GPG ≈ 17.1 PPM
How to use regional evidence
These samples describe nearby environmental water. They cannot establish whether your tap water is soft or hard. Use a utility result or a tap test for appliance settings and treatment sizing.
USGS sites used
1
Nearest site
21.9 mi
Observation range
Sep 10, 2018–Sep 10, 2018
Regional evidence confidence
Low
Median of the latest source-type-aligned hardness observation at each monitoring site within 25 miles. Nearest monitoring location: S F Flathead River nr Columbia Falls MT (Stream).USGS source documentation ↗Evidence tier: Regional environmental evidence. This value is not used as proof of the serving utility's treated-water hardness.
Regional context
Is 59937 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Whitefish median
74 PPM
About the same1 indexed ZIP readings · Range 73.7–73.7 PPM
Montana median
94 PPM
20 PPM lower22 indexed ZIP readings · Range 26.3–629 PPM
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
A reported action-level record needs context. Check its monitoring period and the utility's current report.
Find an official utility report →Test for the decision you face
Use a tap hardness test before sizing a softener. For health concerns, use a certified laboratory and the correct sampling protocol.
Convert your hardness test result →Frequently asked
Water questions for Whitefish
Is tap water safe in Whitefish?+
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.