City water profile
Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Gray Summit, Missouri.
Median indexed hardness
269PPM
2 indexed ZIPs
Range 269–269 PPM
City summary
Gray Summit has 2 published ZIP profiles across Franklin County. The indexed median is 269 PPM, compared with 236 PPM across Missouri.
Among the 504 Missouricities with an indexed median, Gray Summit ranks #176from highest to lowest. Across all 556 state ZIP profiles, available estimates run from 38.3to 483 PPM.
The 269–269 PPM range shows how much the available ZIP estimates vary within the city label.
Hardness distribution
2 of 2 ZIP profiles have a hardness estimate. Bars count ZIP profiles, not households or laboratory samples.
Evidence quality
Confidence labels
Observation window: May 31, 2016 to Jul 16, 2024.
ZIP directory
Open a ZIP for site-level provenance and measurements.
Public water systems
PWSID MO6024213
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 | MO6024213 | Dec 1, 2022 | Resolved |
| Revised Total Coliform Rule | MO6024213 | May 1, 2022 | Resolved |
Practical next steps
Continue comparing
Questions people ask
The indexed city median is 269 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.