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City water profile

Questa water quality

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

Median indexed hardness

189PPM

One indexed ZIP

Range 189–189 PPM

State comparison
39 PPM below
State hardness rank
#109 of 160
Matched utilities
3
Active health records
8

City summary

What the indexed records say

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

Among the 160 New Mexicocities with an indexed median, Questa ranks #109from 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.

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
5 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 1Low: 0

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

ZIP directory

Water reports in Questa

Open a ZIP for site-level provenance and measurements.

ZIP code

87556

Very Hard

189 PPM

Nearest site
5 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Questa Water System

PWSID NM3506829

Groundwater
System population served
2,337
Last reported
Jun 16, 2026

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

La Lama Mdwca

PWSID NM3501129

Groundwater
System population served
45
Last reported
Jun 16, 2026

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

Eagle Rock Village

PWSID NM3500329

Groundwater
System population served
35
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

8 unique active health-based records appear among associated systems. This does not mean every contaminant was tested at every tap.

RecordSystemPeriodStatus
Public NoticeNM3506829Feb 28, 2026Unaddressed
Consumer Confidence RuleNM3500329Oct 1, 2025Unaddressed
Public NoticeNM3501129Aug 17, 2025Unaddressed
Public NoticeNM3500329Aug 16, 2025Unaddressed
Groundwater RuleNM3500329Jul 16, 2025Unaddressed · health-based
Groundwater RuleNM3500329Jul 16, 2025Unaddressed · health-based
Groundwater RuleNM3500329Jul 16, 2025Unaddressed · health-based
Groundwater RuleNM3500329Jul 16, 2025Unaddressed · health-based
Groundwater RuleNM3500329Jul 16, 2025Unaddressed · health-based
Consumer Confidence RuleNM3501129Jul 1, 2025Resolved

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 Questa

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.