City water profile

Water hardness in Cathay

Find official utility reports, understand hardness, and check the water system serving your home in Cathay, North Dakota.

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.

Cathay City Of

ND5200169 · Groundwater · 43 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: 0.0115 mg/L
Action level: 0.015 mg/L

77% of the listed benchmark

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

Copper (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Above action level

Reported level: 2.52 mg/L
Action level: 1.3 mg/L

194% of the listed benchmark

Monitoring period: Jul 1, 2024 to Dec 31, 2024

Violation history (22)

Imported violation history for Cathay City Of
Rule	Status	Period
Lead and Copper Rule	Unaddressed	Sep 23, 2025
Lead and Copper RuleHealth-based	Resolved	Mar 12, 2025 to May 19, 2025
Public Notice	Resolved	Nov 17, 2024 to Mar 17, 2025
Lead and Copper Rule	Resolved	Nov 13, 2024 to May 19, 2025
LEAD AND COPPER RULE REVISIONS	Resolved	Oct 17, 2024 to Jun 25, 2025
LEAD AND COPPER RULE REVISIONSHealth-based	Resolved	Oct 17, 2024 to Jun 25, 2025
Consumer Confidence Rule	Resolved	Oct 2, 2024 to Oct 28, 2024
Lead and Copper Rule	Resolved	Oct 1, 2024 to Oct 23, 2024
Chlorine	Resolved	Jan 1, 2024 to Mar 31, 2024
Lead and Copper Rule	Resolved	Oct 25, 2023 to Apr 11, 2024
Consumer Confidence Rule	Resolved	Oct 2, 2023 to Oct 23, 2023
Revised Total Coliform Rule	Resolved	Aug 1, 2023 to Aug 31, 2023
Chlorine	Resolved	Jul 1, 2023 to Sep 30, 2023
Revised Total Coliform Rule	Resolved	May 1, 2023 to May 31, 2023
Chlorine	Resolved	Apr 1, 2023 to Jun 30, 2023
Lead and Copper Rule	Resolved	Jan 1, 2023 to Oct 23, 2023
Lead and Copper Rule	Resolved	Oct 1, 2022 to Oct 31, 2022
Revised Total Coliform Rule	Resolved	Aug 1, 2022 to Aug 31, 2022
Chlorine	Resolved	Jul 1, 2022 to Sep 30, 2022
Chlorine	Resolved	Apr 1, 2021 to Jun 30, 2021
Lead and Copper Rule	Unaddressed	Apr 1, 2015
Lead and Copper Rule	Unaddressed	Oct 1, 2010

City summary

What the indexed records say

Cathay has 1 published ZIP profile across Wells County. The regional-evidence median is 572 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. At least one estimate is marked low confidence, so observation distance and date deserve extra attention.

Hardness distribution

How local ZIP estimates compare

Soft0 ZIPs

Moderately hard0 ZIPs

Hard0 ZIPs

Very hard1 ZIP

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: 12.7 miles
Profiles with evidence: 1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: May 20, 2016 to Aug 1, 2018.

ZIP directory

Water reports in Cathay

Open a ZIP for site-level provenance and measurements.

ZIP code

58422

Very Hard

572 PPM

Nearest site: 12.7 mi
Confidence: Low

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 North Dakota communities

Bowdon

Wells County

1044 PPM median

Fessenden

Wells County

572 PPM median

Harvey

Wells County

209 PPM median

Sykeston

Wells County

878 PPM median

Cooperstown

Griggs County

579 PPM median

Dazey

Barnes County

579 PPM median

Search all 210 North Dakota cities →

Questions people ask

About water in Cathay

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.