City water profile

Water hardness in Aztec

Find official utility reports, understand hardness, and check the water system serving your home in Aztec, New Mexico.

Utility-reported hardness

Not yet available

Check your provider and source →

State comparison: Unavailable
Evidence comparison rank: —
Matched utilities: 4
Active health records: 8

Your tap water

What does the utility report?

Match the utility name to your water bill. These results describe the utility’s water, not a test at your home. A ZIP can include several water systems.

Utility hardness unavailable in this index

Nearby river or groundwater samples cannot tell us the hardness coming out of your tap. Ask your water provider for total hardness as CaCO₃, or test it at home.

Find an official utility report →

Convert a hardness result →Test your tap →

Match the name on your water bill

Your utility’s measurements and compliance records

These are possible serving systems. A record for one system does not apply to every home in this ZIP. Confirm your provider before interpreting a measurement or notice. Federal records can lag current utility notices.

EPA snapshot: 2026Q2. Historical window begins Jan 1, 2021.

Aztec Domestic Water System

NM3509824 · Surface water · 9,673 people served system-wide

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

No active health-based record in this imported snapshot

Find this utility’s official report →

Measurements (1)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level

Reported level: 7.0e-4 mg/L
Action level: 0.015 mg/L

5% of the listed benchmark

Monitoring period: Jan 1, 2026 to Jun 30, 2026

Violation history (3)

Imported violation history for Aztec Domestic Water System
Rule	Status	Period
Public Notice	Unaddressed	Nov 7, 2025
Lead and Copper Rule	Unaddressed	Oct 1, 2025
Revised Total Coliform Rule	Resolved	Sep 1, 2024 to Sep 30, 2024

Northstar Mdwca

NM3520024 · Surface water · 3,784 people served system-wide

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

No active health-based record in this imported snapshot

Find this utility’s official report →

Measurements (1)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level

Reported level: 0 mg/L
Action level: 0.015 mg/L

0% of the listed benchmark

Monitoring period: Jan 1, 2023 to Dec 31, 2025

Violation history (4)

Imported violation history for Northstar Mdwca
Rule	Status	Period
Surface Water Treatment Rule	Resolved	Feb 1, 2025 to Feb 28, 2025
Interim Enhanced Surface Water Treatment Rule	Resolved	Feb 1, 2025 to Feb 28, 2025
Total Haloacetic Acids (HAA5)	Archived	Oct 1, 2024 to Dec 31, 2024
TTHM	Archived	Oct 1, 2024 to Dec 31, 2024

Southside Mutual Domestic Water

NM3509924 · Surface water · 1,609 people served system-wide

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

No active health-based record in this imported snapshot

Find this utility’s official report →

Measurements (1)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level

Reported level: 0.005 mg/L
Action level: 0.015 mg/L

33% of the listed benchmark

Monitoring period: Jan 1, 2023 to Dec 31, 2025

Violation history (1)

Imported violation history for Southside Mutual Domestic Water
Rule	Status	Period
Public Notice	Unaddressed	Jun 13, 2013

Rosa Joint Ventures Water System

NM3500324 · Groundwater · 239 people served system-wide

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

8 reported active health-based record(s) for this system

Find this utility’s official report →

Measurements (2)

An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.

Lead (90th percentile)

EPA SDWIS Lead and Copper Rule samples

Below action level

Reported level: 0.002 mg/L
Action level: 0.015 mg/L

13% of the listed benchmark

Monitoring period: Jan 1, 2016 to Dec 31, 2018

Selenium

EPA SDWIS reported health-based violation

Reported violation

Reported level: 0.06 MG/L
Maximum contaminant level: 0.05 MG/L

120% of the listed benchmark

Monitoring period: Oct 1, 2021 to Dec 31, 2021

Violation history (27)

Imported violation history for Rosa Joint Ventures Water System
Rule	Status	Period
Groundwater RuleHealth-based	Unaddressed	Dec 24, 2025
Groundwater RuleHealth-based	Unaddressed	Dec 24, 2025
Groundwater RuleHealth-based	Unaddressed	Dec 24, 2025
Groundwater RuleHealth-based	Unaddressed	Dec 24, 2025
Groundwater RuleHealth-based	Unaddressed	Dec 24, 2025
Groundwater RuleHealth-based	Unaddressed	Dec 24, 2025
Groundwater RuleHealth-based	Unaddressed	Dec 24, 2025
Groundwater RuleHealth-based	Unaddressed	Dec 24, 2025
Groundwater Rule	Unaddressed	Sep 28, 2025
E. COLI	Resolved	Aug 17, 2023 to Aug 23, 2023
Groundwater RuleHealth-based	Resolved	Aug 9, 2023 to Aug 29, 2023
Groundwater RuleHealth-based	Resolved	Aug 9, 2023 to Sep 16, 2023
Public Notice	Resolved	Mar 22, 2023 to Jun 12, 2023
Consumer Confidence Rule	Resolved	Jul 1, 2022 to Oct 12, 2022
Public Notice	Resolved	Apr 1, 2022 to Jun 30, 2022
Public Notice	Resolved	Mar 13, 2022 to Aug 31, 2022
Public Notice	Resolved	Jan 1, 2022 to May 17, 2023
Public Notice	Resolved	Dec 10, 2021 to Jan 30, 2025
Consumer Confidence Rule	Resolved	Oct 1, 2021 to Oct 9, 2024
Lead and Copper Rule	Resolved	Oct 1, 2021 to Aug 28, 2023
SeleniumHealth-based	Resolved	Oct 1, 2021 to Dec 31, 2021
E. COLI	Resolved	Aug 25, 2021 to May 27, 2022
Consumer Confidence Rule	Resolved	Jul 1, 2021 to Sep 6, 2024
Revised Total Coliform Rule	Resolved	Apr 1, 2021 to Apr 30, 2021
Public Notice	Unaddressed	Jan 9, 2021
Revised Total Coliform Rule	Resolved	Jan 1, 2021 to Jan 31, 2021
Consumer Confidence Rule	Unaddressed	Oct 19, 1999

City summary

What the indexed records say

Aztec has 1 published ZIP profile across San Juan County. The regional-evidence median is 134 PPM. The city does not meet the stricter comparison standard.

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: 3.4 miles
Profiles with evidence: 1/1

Confidence labels

High: 1Moderate: 0Low: 0

Observation window: Jul 19, 2021 to Mar 26, 2026.

ZIP directory

Water reports in Aztec

Open a ZIP for site-level provenance and measurements.

ZIP code

87410

Hard

133.5 PPM

Nearest site: 3.4 mi
Confidence: High

View full ZIP evidence →

Practical next steps

Move from index to evidence

1. Open your ZIP. Check distance, dates, confidence, and the associated utility.
2. Read the current CCR. Confirm source water, detections, limits, ranges, and notices.
3. Use a measured hardness result. Confirm health concerns or treatment sizing with the right method.

Continue comparing

Other New Mexico communities

Bloomfield

San Juan County

151 PPM median

Farmington

San Juan County

151 PPM median

Kirtland

San Juan County

155 PPM median

La Plata

San Juan County

135 PPM median

Nageezi

San Juan County

24 PPM median

Navajo Dam

San Juan County

129 PPM median

Search all 161 New Mexico cities →

Questions people ask

About water in Aztec

Is the water hard?

Check the utility-reported result above when available. Nearby environmental samples cannot establish tap-water hardness. Ask your provider or test your tap.

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.