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City water profile

Maxwell water quality

Compare local ZIP estimates, evidence quality, associated public systems, and compliance history for Maxwell, New Mexico.

Median indexed hardness

189PPM

One indexed ZIP

Range 189–189 PPM

State comparison
39 PPM below
State hardness rank
#112 of 160
Matched utilities
2
Active health records
1

City summary

What the indexed records say

Maxwell has 1 published ZIP profile across Colfax County. The indexed median is 189 PPM, compared with 228 PPM across New Mexico.

Among the 160 New Mexicocities with an indexed median, Maxwell ranks #112from highest to lowest. Across all 195 state ZIP profiles, available estimates run from 74.2to 688.5 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. 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
36.3 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 0Low: 1

Observation window: Oct 25, 2016 to Apr 22, 2026.

ZIP directory

Water reports in Maxwell

Open a ZIP for site-level provenance and measurements.

ZIP code

87728

Very Hard

189 PPM

Nearest site
36.3 mi
Confidence
Low

View full ZIP evidence →

Public water systems

Utilities associated with this city

Maxwell Water System

PWSID NM3526404

Groundwater
System population served
340
Last reported
Jun 16, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Maxwell Cooperative Water Users Assoc

PWSID NM3510104

Groundwater
System population served
261
Last reported
Jun 16, 2026

The system names this served city; Census place overlap links the city to this ZCTA.

Compliance history

What EPA records show

1 unique active health-based record appears among associated systems. This does not mean every contaminant was tested at every tap.

RecordSystemPeriodStatus
Groundwater RuleNM3510104Jan 23, 2026Resolved · health-based
Groundwater RuleNM3510104Jan 23, 2026Resolved · health-based
Groundwater RuleNM3510104Jan 23, 2026Resolved · health-based
Groundwater RuleNM3526404Jan 2, 2026Unaddressed · health-based
Consumer Confidence RuleNM3510104Jul 1, 2025Resolved
Public NoticeNM3526404Apr 12, 2024Resolved
Public NoticeNM3526404Mar 3, 2024Resolved
Lead and Copper RuleNM3510104Oct 1, 2023Resolved
Consumer Confidence RuleNM3526404Jul 1, 2023Resolved
Revised Total Coliform RuleNM3526404Jan 1, 2023Resolved

Practical next steps

Move from index to evidence

  1. 1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
  2. 2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
  3. 3. Test the tap when needed. Confirm health concerns or treatment sizing with the right method.

Questions people ask

About water in Maxwell

Is the water hard?

The indexed city median is 189 PPM. Open the ZIP report to verify the distance and confidence behind that estimate.

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.