City water profile

Water hardness in Klawock

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

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.

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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.

Klawock

AK2120169 · Surface water · 904 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

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Measurements (3)

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: 0.0036 mg/L
Action level: 0.015 mg/L

24% of the listed benchmark

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

Copper (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Above action level

Reported level: 1.65 mg/L
Action level: 1.3 mg/L

127% of the listed benchmark

Monitoring period: Jul 1, 2005 to Dec 31, 2005

Total Haloacetic Acids (HAA5)

EPA SDWIS reported health-based violation

Reported violation

Reported level: 0.073 MG/L
Maximum contaminant level: 0.06 MG/L

122% of the listed benchmark

Monitoring period: Jan 1, 2026 to Mar 31, 2026

Violation history (27)

Imported violation history for Klawock
Rule	Status	Period
Total Haloacetic Acids (HAA5)Health-based	Archived	Jan 1, 2026 to Mar 31, 2026
Total Haloacetic Acids (HAA5)Health-based	Archived	Oct 1, 2025 to Dec 31, 2025
Total Haloacetic Acids (HAA5)Health-based	Archived	Jul 1, 2025 to Sep 30, 2025
Total Haloacetic Acids (HAA5)Health-based	Archived	Apr 1, 2025 to Jun 30, 2025
Total Haloacetic Acids (HAA5)Health-based	Archived	Jan 1, 2025 to Mar 31, 2025
Total Haloacetic Acids (HAA5)Health-based	Archived	Oct 1, 2024 to Dec 31, 2024
Total Haloacetic Acids (HAA5)Health-based	Archived	Jul 1, 2024 to Sep 30, 2024
Surface Water Treatment Rule	Resolved	Apr 1, 2024 to Apr 30, 2024
Total Haloacetic Acids (HAA5)Health-based	Archived	Apr 1, 2024 to Jun 30, 2024
Interim Enhanced Surface Water Treatment Rule	Resolved	Apr 1, 2024 to Apr 30, 2024
Total Haloacetic Acids (HAA5)Health-based	Archived	Jan 1, 2024 to Mar 31, 2024
Total Haloacetic Acids (HAA5)Health-based	Archived	Oct 1, 2023 to Dec 31, 2023
Total Haloacetic Acids (HAA5)Health-based	Archived	Jul 1, 2023 to Sep 30, 2023
Total Haloacetic Acids (HAA5)Health-based	Archived	Apr 1, 2023 to Jun 30, 2023
Total Haloacetic Acids (HAA5)Health-based	Archived	Jan 1, 2023 to Mar 31, 2023
Surface Water Treatment Rule	Resolved	Oct 1, 2022 to Oct 31, 2022
Total Haloacetic Acids (HAA5)Health-based	Archived	Oct 1, 2022 to Dec 31, 2022
Interim Enhanced Surface Water Treatment Rule	Resolved	Oct 1, 2022 to Oct 31, 2022
Total Haloacetic Acids (HAA5)Health-based	Archived	Jul 1, 2022 to Sep 30, 2022
Total Haloacetic Acids (HAA5)Health-based	Archived	Apr 1, 2022 to Jun 30, 2022
Total Haloacetic Acids (HAA5)Health-based	Archived	Jan 1, 2022 to Mar 31, 2022
Total Haloacetic Acids (HAA5)Health-based	Archived	Oct 1, 2021 to Dec 31, 2021
Consumer Confidence Rule	Resolved	Oct 1, 2021 to Oct 12, 2021
Consumer Confidence Rule	Resolved	Jul 1, 2021 to Oct 12, 2021
Total Haloacetic Acids (HAA5)Health-based	Archived	Jul 1, 2021 to Sep 30, 2021
Total Haloacetic Acids (HAA5)Health-based	Archived	Apr 1, 2021 to Jun 30, 2021
Total Haloacetic Acids (HAA5)Health-based	Archived	Jan 1, 2021 to Mar 31, 2021

City summary

What the indexed records say

Klawock has 1 published ZIP profile across Prince Of Wales-Hyder Census Area. 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 Klawock

Open a ZIP for site-level provenance and measurements.

ZIP code

99925

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.

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