City water profile
Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Hays, Kansas.
Median indexed hardness
691PPM
One indexed ZIP
Range 690.5–690.5 PPM
City summary
Hays has 1 published ZIP profile across Ellis County. The indexed median is 691 PPM, compared with 289 PPM across Kansas.
Among the 484 Kansascities with an indexed median, Hays ranks #5from highest to lowest. Across all 541 state ZIP profiles, available estimates run from 72.2to 707 PPM.
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
1 of 1 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.
Evidence quality
Confidence labels
Observation window: Jul 30, 2018 to Aug 22, 2018.
ZIP directory
Open a ZIP for site-level provenance and measurements.
Public water systems
PWSID KS2005111
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID KS2005122
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID KS2005124
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID KS2005107
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID KS2005110
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID KS2005108
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID KS2005121
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID KS2005101
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID KS2005116
The system names this served city; Census place overlap links the city to this ZCTA.
Compliance history
No active health-based violation appears among the associated systems in the represented EPA reporting quarter. This does not mean every contaminant was tested at every tap.
| Record | System | Period | Status |
|---|---|---|---|
| Lead and Copper Rule | KS2005122 | Jan 1, 2026 | Unaddressed |
| Lead and Copper Rule | KS2005107 | Jan 1, 2026 | Unaddressed |
| Lead and Copper Rule | KS2005108 | Jan 1, 2026 | Unaddressed |
| Nitrate | KS2005116 | Jan 1, 2026 | Archived · health-based |
| Nitrate | KS2005116 | Oct 1, 2025 | Archived · health-based |
| LEAD AND COPPER RULE REVISIONS | KS2005124 | Jul 2, 2025 | Unaddressed |
| LEAD AND COPPER RULE REVISIONS | KS2005107 | Jul 2, 2025 | Unaddressed |
| LEAD AND COPPER RULE REVISIONS | KS2005110 | Jul 2, 2025 | Unaddressed |
| LEAD AND COPPER RULE REVISIONS | KS2005108 | Jul 2, 2025 | Unaddressed |
| Nitrate | KS2005116 | Jul 1, 2025 | Archived · health-based |
Practical next steps
Continue comparing
Questions people ask
The indexed city median is 691 PPM. Open the ZIP report to verify the distance and confidence behind that estimate.
Compliance history is utility-wide and cannot guarantee conditions at every tap. Check current notices and test when address-specific evidence is needed.
Choose treatment only after confirming the problem at the property. A softener targets hardness; contaminant treatment requires a matching, verified performance claim.