City water profile
Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Manhattan, Kansas.
Median indexed hardness
359PPM
3 indexed ZIPs
Range 358.5–383 PPM
City summary
Manhattan has 3 published ZIP profiles across Riley County. The indexed median is 359 PPM, compared with 289 PPM across Kansas.
Among the 484 Kansascities with an indexed median, Manhattan ranks #91from highest to lowest. Across all 541 state ZIP profiles, available estimates run from 72.2to 707 PPM.
The 358.5–383 PPM range shows how much the available ZIP estimates vary within the city label.
Hardness distribution
3 of 3 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.
Evidence quality
Confidence labels
Observation window: Jul 23, 2018 to Jul 16, 2025.
ZIP directory
Open a ZIP for site-level provenance and measurements.
Public water systems
PWSID KS2016112
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID KS2016135
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID KS2016118
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID KS2016119
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID KS2016109
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID KS2014923
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID KS2014916
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID KS2016134
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID KS2016103
The system names this served city; Census place overlap links the city to this ZCTA.
PWSID KS2014918
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 |
|---|---|---|---|
| Revised Total Coliform Rule | KS2016134 | Nov 1, 2025 | Archived |
| Chlorine | KS2016134 | Nov 1, 2025 | Archived |
| Revised Total Coliform Rule | KS2016102 | Sep 1, 2025 | Archived |
| Chlorine | KS2016102 | Sep 1, 2025 | Archived |
| Revised Total Coliform Rule | KS2016118 | Jul 1, 2025 | Archived |
| Chlorine | KS2016118 | Jul 1, 2025 | Archived |
| Chlorine | KS2016119 | Jul 1, 2025 | Archived |
| Revised Total Coliform Rule | KS2016119 | Jul 1, 2025 | Archived |
| Chlorine | KS2016102 | Jan 1, 2025 | Resolved |
| Total Haloacetic Acids (HAA5) | KS2016102 | Jan 1, 2025 | Archived |
Practical next steps
Continue comparing
Questions people ask
The indexed city median is 359 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.