City water profile

Water hardness in Altus

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

Utility-reported hardness

Not yet available

Check your provider and source →

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.

Altus

OK1011501 · Surface water · 18,717 people served system-wide

A municipal system, in-state city, and served county all agree with this Census 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 mg/L
Action level: 0.015 mg/L

0% of the listed benchmark

Monitoring period: Jan 1, 2022 to Dec 31, 2024

TTHM

EPA SDWIS reported health-based violation

Reported violation

Reported level: 0.083 MG/L
Maximum contaminant level: 0.08 MG/L

104% of the listed benchmark

Monitoring period: Jan 1, 2025 to Mar 31, 2025

Violation history (31)

Imported violation history for Altus
Rule	Status	Period
CARBON, TOTAL	Archived	Feb 1, 2026 to Feb 28, 2026
CARBON, TOTAL	Archived	Feb 1, 2026 to Feb 28, 2026
Interim Enhanced Surface Water Treatment Rule	Resolved	Apr 1, 2025 to Apr 30, 2025
Chlorine dioxide	Resolved	Apr 1, 2025 to Apr 30, 2025
TTHMHealth-based	Archived	Jan 1, 2025 to Mar 31, 2025
Atrazine	Resolved	Jan 1, 2025 to Mar 31, 2025
TTHMHealth-based	Archived	Jan 1, 2025 to Mar 31, 2025
TTHM	Resolved	Dec 30, 2024 to Mar 5, 2025
TTHMHealth-based	Archived	Oct 1, 2024 to Dec 31, 2024
Atrazine	Resolved	Oct 1, 2024 to Dec 31, 2024
TTHMHealth-based	Archived	Oct 1, 2024 to Dec 31, 2024
TTHMHealth-based	Archived	Oct 1, 2024 to Dec 31, 2024
TTHMHealth-based	Archived	Oct 1, 2024 to Dec 31, 2024
CARBON, TOTAL	Resolved	Aug 1, 2024 to Aug 31, 2024
CARBON, TOTAL	Resolved	Aug 1, 2024 to Aug 31, 2024
TTHMHealth-based	Archived	Jul 1, 2024 to Sep 30, 2024
TTHMHealth-based	Archived	Jul 1, 2024 to Sep 30, 2024
TTHMHealth-based	Archived	Jul 1, 2024 to Sep 30, 2024
TTHMHealth-based	Archived	Jul 1, 2024 to Sep 30, 2024
TTHMHealth-based	Archived	Apr 1, 2024 to Jun 30, 2024
TTHMHealth-based	Archived	Apr 1, 2024 to Jun 30, 2024
TTHMHealth-based	Archived	Apr 1, 2024 to Jun 30, 2024
TTHMHealth-based	Archived	Apr 1, 2024 to Jun 30, 2024
TTHM	Resolved	Mar 31, 2024 to Jun 11, 2024
Surface Water Treatment RuleHealth-based	Resolved	Jan 1, 2024 to Jan 31, 2024
Surface Water Treatment RuleHealth-based	Resolved	Jan 1, 2024 to Jan 31, 2024
TTHMHealth-based	Archived	Jan 1, 2024 to Mar 31, 2024
TTHMHealth-based	Archived	Jan 1, 2024 to Mar 31, 2024
Revised Total Coliform Rule	Resolved	Jun 1, 2023 to Jun 30, 2023
Interim Enhanced Surface Water Treatment RuleHealth-based	Resolved	Sep 1, 2022 to Sep 30, 2022
Interim Enhanced Surface Water Treatment RuleHealth-based	Resolved	Aug 1, 2022 to Aug 31, 2022

City summary

What the indexed records say

Altus has 2 published ZIP profiles across Jackson County. No qualifying nearby hardness observation is available for the city.

The —–— PPM range shows how much the available ZIP estimates vary within the city label.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs

Moderately hard0 ZIPs

Hard0 ZIPs

Very hard0 ZIPs

0 of 2 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: 0/2

Confidence labels

High: 0Moderate: 0Low: 0

Observation window: unavailable to unavailable.

ZIP directory

Water reports in Altus

Open a ZIP for site-level provenance and measurements.

ZIP code

73521

No estimate

—

Nearest site: — mi
Confidence: —

View full ZIP evidence →

ZIP code

73523

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 Oklahoma communities

Ada

Pontotoc County

305 PPM median

Ardmore

Carter County

419 PPM median

Arkoma

Le Flore County

46 PPM median

Beaver

Beaver County

293 PPM median

Bethany

Oklahoma County

610 PPM median

Buffalo

Harper County

93 PPM median

Search all 108 Oklahoma cities →

Questions people ask

About water in Altus

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.