City water profile
Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Maynard, Massachusetts.
Median indexed hardness
71PPM
2 indexed ZIPs
Range 65.8–76.9 PPM
City summary
Maynard has 2 published ZIP profiles across Middlesex County. The indexed median is 71 PPM, compared with 49 PPM across Massachusetts.
Among the 302 Massachusettscities with an indexed median, Maynard ranks #72from highest to lowest. Across all 328 state ZIP profiles, available estimates run from 24.3to 128 PPM.
The 65.8–76.9 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: Jan 13, 2016 to Sep 25, 2023.
ZIP directory
Open a ZIP for site-level provenance and measurements.
Public water systems
PWSID MA2174000
EPA SDWIS explicitly lists this ZIP in the system's served geography.
PWSID MA2286024
EPA SDWIS explicitly lists this ZIP in the system's served geography.
PWSID MA2286000
EPA SDWIS explicitly lists this ZIP in the system's served geography.
PWSID MA2286018
EPA SDWIS explicitly lists this ZIP in the system's served geography.
PWSID MA2286031
EPA SDWIS explicitly lists this ZIP in the system's served geography.
PWSID MA2286033
EPA SDWIS explicitly lists this ZIP in the system's served geography.
PWSID MA2286026
EPA SDWIS explicitly lists this ZIP in the system's served geography.
PWSID MA2286012
EPA SDWIS explicitly lists this ZIP in the system's served geography.
PWSID MA2286017
EPA SDWIS explicitly lists this ZIP in the system's served geography.
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 | MA2174000 | Apr 1, 2026 | Resolved |
| Revised Total Coliform Rule | MA2286017 | Dec 1, 2024 | Resolved |
| Lead and Copper Rule | MA2174000 | Sep 29, 2024 | Resolved |
| Revised Total Coliform Rule | MA2286033 | Aug 1, 2023 | Resolved · health-based |
| Consumer Confidence Rule | MA2286018 | Jul 1, 2023 | Resolved |
| Consumer Confidence Rule | MA2286031 | Jul 1, 2023 | Resolved |
| Atrazine | MA2286024 | Jul 1, 2022 | Resolved |
| Endrin | MA2286024 | Jul 1, 2022 | Resolved |
| ETHYLENE DIBROMIDE | MA2286024 | Jul 1, 2022 | Resolved |
| Methoxychlor | MA2286024 | Jul 1, 2022 | Resolved |
Practical next steps
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Questions people ask
The indexed city median is 71 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.