Utility-reported hardness
Unavailable
Ask your provider or test your tap
Local water dashboard
Official source aggregationWater quality in Las Vegas, NM 87701
Regional hardness evidence, possible serving systems, EPA compliance history, and the measurements that are—and are not—available for San Miguel County.
9 active health-based record(s) across possible systems
- Largest possible serving system
- Las Vegas (city Of)
- Source water
- Surface water + Groundwater
- County
- San Miguel County
- Profile updated
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 →At a glance
What the current records say
EPA quarter 2026Q2
All possible systems
Review needed
9 active health-based records
Measurements by utility
Each result belongs to a specific system.
Utility match
4 systems
Serves 14,530 people system-wide
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.
Las Vegas (city Of)
NM3518025 · Surface water · 14,530 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 (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
- Reported level
- 0.0021 mg/L
- Action level
- 0.015 mg/L
14% of the listed benchmark
Monitoring period: Jan 1, 2021 to Dec 31, 2023
TTHM
EPA SDWIS reported health-based violation
- Reported level
- 0.087 MG/L
- Maximum contaminant level
- 0.08 MG/L
109% of the listed benchmark
Monitoring period: Oct 1, 2024 to Dec 31, 2024
Violation history (65)
| Rule | Status | Period |
|---|---|---|
| Groundwater RuleHealth-based | Resolved | Aug 1, 2025 to Nov 4, 2025 |
| Groundwater RuleHealth-based | Resolved | Aug 1, 2025 to Nov 4, 2025 |
| Groundwater RuleHealth-based | Resolved | Aug 1, 2025 to Apr 23, 2024 |
| Groundwater RuleHealth-based | Resolved | Aug 1, 2025 to Nov 4, 2025 |
| Groundwater RuleHealth-based | Resolved | Aug 1, 2025 to Mar 19, 2026 |
| Groundwater RuleHealth-based | Resolved | Aug 1, 2025 to Nov 4, 2025 |
| Groundwater RuleHealth-based | Resolved | Aug 1, 2025 to Nov 4, 2025 |
| Interim Enhanced Surface Water Treatment RuleHealth-based | Resolved | Feb 1, 2025 to Feb 28, 2025 |
| Surface Water Treatment Rule | Resolved | Jan 1, 2025 to Jan 31, 2025 |
| Surface Water Treatment Rule | Resolved | Oct 1, 2024 to Oct 31, 2024 |
| Interim Enhanced Surface Water Treatment Rule | Resolved | Oct 1, 2024 to Oct 31, 2024 |
| CARBON, TOTALHealth-based | Resolved | Oct 1, 2024 to Oct 2, 2024 |
| TTHMHealth-based | Resolved | Oct 1, 2024 to Dec 31, 2024 |
| CARBON, TOTALHealth-based | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| CARBON, TOTALHealth-based | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| CARBON, TOTALHealth-based | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| TTHMHealth-based | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| TTHMHealth-based | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| CARBON, TOTALHealth-based | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| TTHMHealth-based | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| CARBON, TOTALHealth-based | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| CARBON, TOTALHealth-based | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| CARBON, TOTALHealth-based | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| TTHMHealth-based | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| Interim Enhanced Surface Water Treatment RuleHealth-based | Resolved | Dec 1, 2023 to Dec 31, 2023 |
| Public Notice | Resolved | Nov 23, 2023 to Mar 18, 2024 |
| Interim Enhanced Surface Water Treatment RuleHealth-based | Resolved | Nov 1, 2023 to Nov 30, 2023 |
| CARBON, TOTALHealth-based | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| CARBON, TOTALHealth-based | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| CARBON, TOTALHealth-based | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| TTHMHealth-based | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| CARBON, TOTALHealth-based | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| CARBON, TOTALHealth-based | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| TTHMHealth-based | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| CARBON, TOTALHealth-based | Resolved | Jul 1, 2023 to Sep 30, 2023 |
| Interim Enhanced Surface Water Treatment Rule | Resolved | May 7, 2023 to Nov 28, 2023 |
| TTHMHealth-based | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| TTHMHealth-based | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| CARBON, TOTALHealth-based | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| CARBON, TOTALHealth-based | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| TTHMHealth-based | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| CARBON, TOTALHealth-based | Resolved | Apr 1, 2023 to Jun 30, 2023 |
| Interim Enhanced Surface Water Treatment Rule | Resolved | Mar 8, 2023 to Nov 28, 2023 |
| Surface Water Treatment RuleHealth-based | Resolved | Mar 1, 2023 to Mar 31, 2023 |
| Interim Enhanced Surface Water Treatment RuleHealth-based | Resolved | Mar 1, 2023 to Mar 31, 2023 |
| Interim Enhanced Surface Water Treatment RuleHealth-based | Resolved | Feb 1, 2023 to Feb 28, 2023 |
| Interim Enhanced Surface Water Treatment RuleHealth-based | Resolved | Feb 1, 2023 to Feb 28, 2023 |
| Interim Enhanced Surface Water Treatment RuleHealth-based | Resolved | Jan 1, 2023 to Jan 31, 2023 |
| TTHMHealth-based | Resolved | Jan 1, 2023 to Mar 31, 2023 |
| Surface Water Treatment Rule | Resolved | Mar 1, 2022 to Mar 31, 2022 |
| Surface Water Treatment Rule | Resolved | Feb 1, 2022 to Feb 28, 2022 |
| CARBON, TOTALHealth-based | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| CARBON, TOTALHealth-based | Resolved | Jan 1, 2022 to Mar 31, 2022 |
| Public Notice | Resolved | Dec 18, 2021 to Dec 21, 2021 |
| Surface Water Treatment Rule | Resolved | Oct 1, 2021 to Oct 31, 2021 |
| Public Notice | Resolved | Jun 24, 2021 to Jun 25, 2021 |
| TTHM | Resolved | Jun 1, 2021 to Aug 31, 2021 |
| Total Haloacetic Acids (HAA5) | Resolved | Jun 1, 2021 to Aug 31, 2021 |
| Groundwater Rule | Resolved | Apr 1, 2021 to Aug 25, 2021 |
| Surface Water Treatment RuleHealth-based | Resolved | Apr 1, 2021 to Apr 30, 2021 |
| Surface Water Treatment Rule | Resolved | Feb 1, 2021 to Feb 28, 2021 |
| Public Notice | Unaddressed | May 23, 2012 |
| Public Notice | Unaddressed | Feb 11, 2012 |
| Public Notice | Unaddressed | Jan 21, 2012 |
| Public Notice | Unaddressed | Jan 11, 2012 |
Tecolote Mdwca
NM3519325 · Groundwater · 126 people served system-wide
The system names this served city; Census place overlap links the city to this ZCTA.
1 reported active health-based record(s) for this system
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
- Reported level
- 0.001 mg/L
- Action level
- 0.015 mg/L
7% of the listed benchmark
Monitoring period: Jul 1, 2025 to Dec 31, 2025
Violation history (12)
| Rule | Status | Period |
|---|---|---|
| Consumer Confidence Rule | Unaddressed | Jul 1, 2025 |
| Lead and Copper Rule | Resolved | Jul 1, 2025 to Dec 31, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | Addressed | Oct 17, 2024 |
| LEAD AND COPPER RULE REVISIONS | Addressed | Oct 17, 2024 |
| Lead and Copper Rule | Resolved | Oct 1, 2024 to Dec 31, 2025 |
| Consumer Confidence Rule | Resolved | Oct 1, 2022 to Oct 26, 2022 |
| Consumer Confidence Rule | Resolved | Jul 1, 2022 to Oct 19, 2022 |
| Public Notice | Resolved | Apr 17, 2022 to Jul 27, 2023 |
| Consumer Confidence Rule | Resolved | Jul 1, 2021 to Aug 18, 2021 |
| Public Notice | Resolved | May 21, 2021 to Dec 10, 2021 |
| Public Notice | Resolved | Apr 25, 2021 to Dec 10, 2021 |
| Consumer Confidence Rule | Unaddressed | Oct 19, 1999 |
El Creston Mdwca
NM3501725 · Groundwater · 50 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
- Reported level
- 0.0071 mg/L
- Action level
- 0.015 mg/L
47% of the listed benchmark
Monitoring period: Jan 1, 2023 to Dec 31, 2025
Violation history (12)
| Rule | Status | Period |
|---|---|---|
| LEAD AND COPPER RULE REVISIONSHealth-based | Resolved | Oct 17, 2024 to Jun 17, 2025 |
| LEAD AND COPPER RULE REVISIONS | Resolved | Oct 17, 2024 to Jun 17, 2025 |
| Groundwater RuleHealth-based | Resolved | Aug 12, 2023 to Mar 14, 2023 |
| Groundwater RuleHealth-based | Resolved | Aug 12, 2023 to Mar 20, 2024 |
| Groundwater RuleHealth-based | Resolved | Aug 12, 2023 to Mar 14, 2023 |
| Groundwater RuleHealth-based | Resolved | Aug 12, 2023 to Mar 14, 2023 |
| Groundwater RuleHealth-based | Resolved | Aug 12, 2023 to Mar 14, 2023 |
| Groundwater Rule | Resolved | May 17, 2023 to Mar 14, 2023 |
| Public Notice | Resolved | Nov 6, 2022 to Jan 19, 2023 |
| Public Notice | Resolved | Nov 6, 2022 to Jan 19, 2023 |
| Revised Total Coliform Rule | Resolved | Oct 1, 2021 to Oct 31, 2021 |
| Revised Total Coliform Rule | Resolved | Sep 1, 2021 to Sep 30, 2021 |
Gabaldon Mdwca
NM3500525 · Groundwater · 47 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 (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
- Reported level
- 0.001 mg/L
- Action level
- 0.015 mg/L
7% of the listed benchmark
Monitoring period: Jan 1, 2021 to Dec 31, 2023
Violation history (32)
| Rule | Status | Period |
|---|---|---|
| Consumer Confidence Rule | Unaddressed | Oct 1, 2025 |
| Groundwater RuleHealth-based | Resolved | Sep 13, 2025 to Mar 17, 2026 |
| Groundwater RuleHealth-based | Unaddressed | Sep 13, 2025 |
| Groundwater RuleHealth-based | Unaddressed | Sep 13, 2025 |
| Groundwater RuleHealth-based | Unaddressed | Sep 13, 2025 |
| Groundwater RuleHealth-based | Unaddressed | Sep 13, 2025 |
| Groundwater RuleHealth-based | Unaddressed | Sep 13, 2025 |
| Groundwater RuleHealth-based | Unaddressed | Sep 13, 2025 |
| Groundwater RuleHealth-based | Resolved | Sep 13, 2025 to Mar 17, 2026 |
| Groundwater RuleHealth-based | Unaddressed | Sep 13, 2025 |
| Groundwater RuleHealth-based | Unaddressed | Sep 13, 2025 |
| Revised Total Coliform Rule | Resolved | Feb 1, 2025 to Feb 28, 2025 |
| Revised Total Coliform Rule | Resolved | Jan 1, 2025 to Jan 31, 2025 |
| Revised Total Coliform Rule | Resolved | Dec 1, 2024 to Dec 31, 2024 |
| Revised Total Coliform Rule | Resolved | Nov 1, 2024 to Nov 30, 2024 |
| LEAD AND COPPER RULE REVISIONS | Resolved | Oct 17, 2024 to Apr 8, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | Resolved | Oct 17, 2024 to Apr 8, 2025 |
| Consumer Confidence Rule | Unaddressed | Oct 1, 2024 |
| Revised Total Coliform Rule | Resolved | Oct 1, 2024 to Oct 31, 2024 |
| Revised Total Coliform Rule | Resolved | Sep 1, 2024 to Sep 30, 2024 |
| Revised Total Coliform Rule | Resolved | Aug 1, 2024 to Aug 31, 2024 |
| Consumer Confidence Rule | Unaddressed | Jul 1, 2024 |
| Chlorine | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| Chlorine | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| Consumer Confidence Rule | Resolved | Oct 1, 2023 to Mar 17, 2025 |
| Consumer Confidence Rule | Resolved | Jul 1, 2023 to Mar 14, 2025 |
| Consumer Confidence Rule | Resolved | Jul 1, 2022 to Sep 23, 2022 |
| Public Notice | Resolved | Mar 2, 2022 to Aug 18, 2022 |
| Public Notice | Resolved | Dec 19, 2021 to Aug 18, 2022 |
| Consumer Confidence Rule | Resolved | Oct 1, 2021 to Oct 10, 2022 |
| Consumer Confidence Rule | Resolved | Jul 1, 2021 to Jul 15, 2021 |
| Public Notice | Resolved | Jan 21, 2021 to Apr 1, 2021 |
Hardness meter
What does nearby environmental evidence show?
90.2
PPM as CaCO₃
Moderately Hard
PPM
90.2
GPG
5.3
Regional environmental evidence
USGS hardness classification scale
90.2 PPM
Soft
0–60Moderate
61–120Hard
121–180Very hard
181+
0–60Moderate
61–120Hard
121–180Very hard
181+
Parts per million
90.2
mg/L as CaCO₃ equivalent
Grains per gallon
5.3
1 GPG ≈ 17.1 PPM
How to use regional evidence
These samples describe nearby environmental water. They cannot establish whether your tap water is soft or hard. Use a utility result or a tap test for appliance settings and treatment sizing.
USGS sites used
5
Nearest site
22.8 mi
Observation range
Apr 22, 2025–Mar 31, 2026
Regional evidence confidence
Moderate
Median of the latest source-type-aligned hardness observation at each monitoring site within 25 miles. Nearest monitoring location: GALLINAS RIVER DOWNSTREAM OF 08380500-4 (Stream).USGS source documentation ↗Evidence tier: Regional environmental evidence. This value is not used as proof of the serving utility's treated-water hardness.
Regional context
Is 87701 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Las Vegas median
90 PPM
About the same1 indexed ZIP readings · Range 90.2–90.2 PPM
New Mexico median
206 PPM
116 PPM lower157 indexed ZIP readings · Range 2.1–1435 PPM
Evidence-first next steps
Confirm the problem before choosing treatment
This profile can help you ask the right question. It cannot select equipment for a property without a current result from the serving utility or the tap.
Confirm the serving system
ZIP boundaries and utility service areas do not perfectly match. Verify the system on a water bill before relying on system-wide records.
Read the current utility report
An active health-based record is present. Follow the utility's current notice and public-health instructions.
Find an official utility report →Test for the decision you face
Use a tap hardness test before sizing a softener. For health concerns, use a certified laboratory and the correct sampling protocol.
Convert your hardness test result →Frequently asked
Water questions for Las Vegas
Is tap water safe in Las Vegas?+
EPA ECHO reports 9 active health-based violations among the associated community water systems. Review the affected utility's current notice and Consumer Confidence Report.
How hard is the water?+
Utility-reported hardness is unavailable in this index. Regional samples do not establish tap-water hardness. Ask your provider or test your tap.
Do I need a water softener?+
Confirm hardness at your tap and consider actual scale or spotting before choosing treatment. Regional environmental values cannot determine whether you need a softener. A softener addresses hardness, not every contaminant.