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City water profile

La Plata water quality

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

Median indexed hardness

146PPM

One indexed ZIP

Range 145.5–145.5 PPM

State comparison
82 PPM below
State hardness rank
#136 of 160
Matched utilities
1
Active health records
0

City summary

What the indexed records say

La Plata has 1 published ZIP profile across San Juan County. The indexed median is 146 PPM, compared with 228 PPM across New Mexico.

Among the 160 New Mexicocities with an indexed median, La Plata ranks #136from 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
Hard1 ZIP
Very hard0 ZIPs

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
11.5 miles
Profiles with evidence
1/1

Confidence labels

High: 0Moderate: 1Low: 0

Observation window: Feb 16, 2016 to Mar 30, 2026.

ZIP directory

Water reports in La Plata

Open a ZIP for site-level provenance and measurements.

ZIP code

87418

Hard

145.5 PPM

Nearest site
11.5 mi
Confidence
Moderate

View full ZIP evidence →

Public water systems

Utilities associated with this city

Upper La Plata Water Users Association

PWSID NM3510624

Surface water
System population served
2,265
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

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.

RecordSystemPeriodStatus
Total Haloacetic Acids (HAA5)NM3510624Aug 1, 2021Resolved
TTHMNM3510624Aug 1, 2021Resolved

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 La Plata

Is the water hard?

The indexed city median is 146 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.