City water profile

Water hardness in Cairo

Find official utility reports, understand hardness, and check the water system serving your home in Cairo, West Virginia.

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.

Cairo Water Department

WV3304301 · Surface water · 339 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: 0.001 mg/L
Action level: 0.015 mg/L

7% of the listed benchmark

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

Violation history (28)

Imported violation history for Cairo Water Department
Rule	Status	Period
Revised Total Coliform Rule	Archived	Dec 1, 2025 to Dec 31, 2025
Chlorine	Archived	Dec 1, 2025 to Dec 31, 2025
Total Haloacetic Acids (HAA5)	Archived	Oct 1, 2025 to Dec 31, 2025
TTHM	Archived	Oct 1, 2025 to Dec 31, 2025
Revised Total Coliform Rule	Resolved	Dec 1, 2023 to Dec 31, 2023
Chlorine	Resolved	Oct 1, 2023 to Dec 31, 2023
Public Notice	Resolved	Aug 16, 2023 to Sep 22, 2023
Public Notice	Resolved	Aug 16, 2023 to Sep 22, 2023
TTHM	Resolved	Jul 1, 2023 to Sep 30, 2023
Total Haloacetic Acids (HAA5)	Resolved	Jul 1, 2023 to Sep 30, 2023
Total Haloacetic Acids (HAA5)	Resolved	Apr 1, 2023 to Jun 30, 2023
TTHM	Resolved	Apr 1, 2023 to Jun 30, 2023
TTHM	Resolved	Jan 1, 2023 to Mar 31, 2023
Revised Total Coliform Rule	Resolved	Nov 1, 2022 to Nov 30, 2022
Public Notice	Resolved	Jun 16, 2022 to Jun 16, 2022
TTHM	Resolved	Mar 1, 2022 to May 31, 2022
Total Haloacetic Acids (HAA5)	Resolved	Mar 1, 2022 to May 31, 2022
TTHM	Archived	Sep 1, 2021 to Nov 30, 2021
Total Haloacetic Acids (HAA5)	Archived	Sep 1, 2021 to Nov 30, 2021
Revised Total Coliform Rule	Resolved	May 1, 2021 to May 31, 2021
Surface Water Treatment Rule	Resolved	May 1, 2021 to May 31, 2021
Revised Total Coliform Rule	Resolved	Apr 1, 2021 to Apr 30, 2021
Chlorine	Resolved	Apr 1, 2021 to Jun 30, 2021
Surface Water Treatment Rule	Resolved	Apr 1, 2021 to Apr 30, 2021
Chlorine	Resolved	Apr 1, 2021 to Jun 30, 2021
Total Haloacetic Acids (HAA5)	Archived	Mar 1, 2021 to May 31, 2021
TTHM	Archived	Mar 1, 2021 to May 31, 2021
Public Notice	Unaddressed	Sep 29, 2005

City summary

What the indexed records say

Cairo has 1 published ZIP profile across Ritchie County. The regional-evidence median is 126 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

Hard1 ZIP

Very hard0 ZIPs

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: 21.9 miles
Profiles with evidence: 1/1

Confidence labels

High: 0Moderate: 1Low: 0

Observation window: Nov 6, 2019 to Mar 16, 2023.

ZIP directory

Water reports in Cairo

Open a ZIP for site-level provenance and measurements.

ZIP code

26337

Hard

126 PPM

Nearest site: 21.9 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 West Virginia communities

Pennsboro

Ritchie County

126 PPM median

Harrisville

Ritchie County

— No median

Cottageville

Jackson County

126 PPM median

Middlebourne

Tyler County

126 PPM median

Ravenswood

Jackson County

126 PPM median

Crumpler

Mcdowell County

129 PPM median

Search all 179 West Virginia cities →

Questions people ask

About water in Cairo

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.