Utility-reported hardness
Unavailable
Ask your provider or test your tap
Local water dashboard
Official source aggregationWater quality in Gallup, NM 87301
Regional hardness evidence, possible serving systems, EPA compliance history, and the measurements that are—and are not—available for Mckinley County.
16 active health-based record(s) across possible systems
- Largest possible serving system
- Gallup Water System
- Source water
- Groundwater
- County
- Mckinley 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
16 active health-based records
Measurements by utility
Each result belongs to a specific system.
Utility match
7 systems
Serves 20,880 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.
Gallup Water System
NM3508317 · Groundwater · 20,880 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 mg/L
- Action level
- 0.015 mg/L
0% of the listed benchmark
Monitoring period: Jan 1, 2021 to Dec 31, 2023
Violation history (13)
| Rule | Status | Period |
|---|---|---|
| Groundwater RuleHealth-based | Unaddressed | Jan 1, 2026 |
| Groundwater RuleHealth-based | Unaddressed | Jan 1, 2026 |
| Groundwater RuleHealth-based | Unaddressed | Jan 1, 2026 |
| Groundwater RuleHealth-based | Unaddressed | Jan 1, 2026 |
| Groundwater RuleHealth-based | Unaddressed | Jan 1, 2026 |
| Groundwater RuleHealth-based | Unaddressed | Jan 1, 2026 |
| Groundwater RuleHealth-based | Unaddressed | Jan 1, 2026 |
| Groundwater RuleHealth-based | Unaddressed | Jan 1, 2026 |
| Groundwater Rule | Unaddressed | Apr 1, 2025 |
| Consumer Confidence Rule | Resolved | Oct 1, 2024 to Mar 4, 2025 |
| Public Notice | Unaddressed | Aug 23, 2024 |
| Groundwater Rule | Resolved | Apr 1, 2024 to Oct 3, 2024 |
| Public Notice | Resolved | Jul 10, 2021 to Sep 14, 2021 |
White Cliffs Mdwua
NM3500117 · Groundwater · 323 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
- 0.002 mg/L
- Action level
- 0.015 mg/L
13% of the listed benchmark
Monitoring period: Jan 1, 2023 to Dec 31, 2025
Violation history (4)
| Rule | Status | Period |
|---|---|---|
| Public Notice | Unaddressed | Dec 19, 2025 |
| Groundwater Rule | Resolved | Nov 24, 2024 to Feb 18, 2025 |
| Revised Total Coliform Rule | Resolved | Sep 1, 2024 to Sep 30, 2024 |
| Public Notice | Resolved | Oct 9, 2021 to Nov 29, 2021 |
Coal Basin Dwua
NM3508217 · Groundwater · 116 people served system-wide
The system names this served city; Census place overlap links the city to this ZCTA.
3 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
- 0.003 mg/L
- Action level
- 0.015 mg/L
20% of the listed benchmark
Monitoring period: Jan 1, 2024 to Jun 30, 2024
Violation history (10)
| Rule | Status | Period |
|---|---|---|
| Lead and Copper Rule | Unaddressed | Oct 1, 2025 |
| Public Notice | Unaddressed | Aug 23, 2025 |
| Groundwater RuleHealth-based | Unaddressed | Oct 23, 2024 |
| Groundwater RuleHealth-based | Resolved | Oct 23, 2024 to May 22, 2025 |
| Groundwater RuleHealth-based | Resolved | Oct 23, 2024 to May 22, 2025 |
| Groundwater RuleHealth-based | Unaddressed | Oct 23, 2024 |
| Groundwater RuleHealth-based | Unaddressed | Oct 23, 2024 |
| Lead and Copper Rule | Resolved | Jan 1, 2023 to Jun 19, 2023 |
| Lead and Copper Rule | Resolved | Jul 1, 2022 to Jun 19, 2023 |
| Consumer Confidence Rule | Unaddressed | Jul 1, 2001 |
D & S Trailer Ranch
NM3559717 · Groundwater · 109 people served system-wide
The system names this served city; Census place overlap links the city to this ZCTA.
2 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 mg/L
- Action level
- 0.015 mg/L
0% of the listed benchmark
Monitoring period: Jan 1, 2011 to Dec 31, 2013
Violation history (9)
| Rule | Status | Period |
|---|---|---|
| Groundwater RuleHealth-based | Resolved | Oct 23, 2024 to Nov 11, 2024 |
| Consumer Confidence Rule | Resolved | Oct 1, 2022 to Dec 23, 2022 |
| Consumer Confidence Rule | Resolved | Jul 1, 2022 to Dec 23, 2022 |
| Public Notice | Resolved | Jun 2, 2022 to Dec 22, 2022 |
| Consumer Confidence Rule | Resolved | Oct 1, 2021 to Dec 23, 2022 |
| Consumer Confidence Rule | Resolved | Jul 1, 2021 to Dec 22, 2022 |
| Groundwater RuleHealth-based | Unaddressed | Feb 26, 2020 |
| Groundwater RuleHealth-based | Unaddressed | Feb 26, 2020 |
| Groundwater Rule | Unaddressed | Dec 1, 2019 |
Block A Well Co-Op
NM3532517 · Groundwater · 92 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
- 0.003 mg/L
- Action level
- 0.015 mg/L
20% of the listed benchmark
Monitoring period: Jan 1, 2020 to Dec 31, 2022
Violation history (18)
| Rule | Status | Period |
|---|---|---|
| Consumer Confidence Rule | Resolved | Oct 1, 2025 to Feb 10, 2026 |
| Lead and Copper Rule | Unaddressed | Oct 1, 2025 |
| Groundwater RuleHealth-based | Resolved | May 17, 2024 to Nov 22, 2024 |
| Groundwater RuleHealth-based | Resolved | May 17, 2024 to Nov 22, 2024 |
| Groundwater RuleHealth-based | Resolved | May 17, 2024 to Mar 16, 2025 |
| Groundwater RuleHealth-based | Resolved | May 17, 2024 to Aug 5, 2024 |
| Groundwater RuleHealth-based | Resolved | May 17, 2024 to May 30, 2025 |
| Groundwater RuleHealth-based | Resolved | May 17, 2024 to Aug 5, 2024 |
| Groundwater RuleHealth-based | Resolved | May 17, 2024 to Nov 23, 2024 |
| Groundwater RuleHealth-based | Resolved | May 17, 2024 to Aug 5, 2024 |
| Groundwater RuleHealth-based | Resolved | May 17, 2024 to Aug 12, 2024 |
| Public Notice | Resolved | Mar 3, 2024 to Mar 6, 2024 |
| Public Notice | Resolved | Mar 3, 2024 to Mar 6, 2024 |
| Public Notice | Resolved | Mar 3, 2024 to Mar 6, 2024 |
| Public Notice | Resolved | Mar 3, 2024 to Mar 6, 2024 |
| Revised Total Coliform Rule | Resolved | Sep 1, 2023 to Sep 30, 2023 |
| Revised Total Coliform Rule | Resolved | Aug 1, 2023 to Aug 31, 2023 |
| Revised Total Coliform Rule | Resolved | Jul 1, 2023 to Jul 31, 2023 |
Cedar Ridge Trailer Park
NM3559417 · Groundwater · 65 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
- 0.003 mg/L
- Action level
- 0.015 mg/L
20% of the listed benchmark
Monitoring period: Jul 1, 2025 to Dec 31, 2025
Violation history (9)
| Rule | Status | Period |
|---|---|---|
| Lead and Copper Rule | Unaddressed | Sep 29, 2025 |
| Consumer Confidence Rule | Resolved | Jul 1, 2025 to Aug 12, 2025 |
| Groundwater RuleHealth-based | Resolved | Oct 23, 2024 to Dec 30, 2024 |
| Groundwater RuleHealth-based | Resolved | Oct 23, 2024 to Dec 20, 2024 |
| Groundwater RuleHealth-based | Resolved | Oct 23, 2024 to Dec 20, 2024 |
| Groundwater RuleHealth-based | Resolved | Oct 23, 2024 to Dec 20, 2024 |
| Groundwater RuleHealth-based | Resolved | Oct 23, 2024 to Dec 20, 2024 |
| Groundwater RuleHealth-based | Resolved | Oct 23, 2024 to Dec 24, 2024 |
| Lead and Copper Rule | Resolved | Oct 1, 2024 to May 12, 2025 |
Manuelito Navajo Childrens Home
NM3560617 · Groundwater · 35 people served system-wide
The system names this served city; Census place overlap links the city to this ZCTA.
3 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 mg/L
- Action level
- 0.015 mg/L
0% of the listed benchmark
Monitoring period: Jan 1, 2021 to Dec 31, 2023
Violation history (27)
| Rule | Status | Period |
|---|---|---|
| Chlorine | Resolved | Jan 1, 2026 to Jan 31, 2026 |
| Chlorine | Resolved | Oct 1, 2025 to Oct 31, 2025 |
| Chlorine | Resolved | Sep 1, 2025 to Sep 30, 2025 |
| Chlorine | Resolved | Jul 1, 2025 to Jul 31, 2025 |
| Chlorine | Archived | Jun 1, 2025 to Jun 30, 2025 |
| Chlorine | Archived | May 1, 2025 to May 31, 2025 |
| Chlorine | Archived | Apr 1, 2025 to Apr 30, 2025 |
| Chlorine | Archived | Mar 1, 2025 to Mar 31, 2025 |
| Groundwater RuleHealth-based | Unaddressed | Feb 19, 2025 |
| Groundwater RuleHealth-based | Unaddressed | Feb 19, 2025 |
| Groundwater RuleHealth-based | Unaddressed | Feb 19, 2025 |
| Chlorine | Archived | Feb 1, 2025 to Feb 28, 2025 |
| Chlorine | Archived | Jan 1, 2025 to Jan 31, 2025 |
| Chlorine | Archived | Dec 1, 2024 to Dec 31, 2024 |
| Chlorine | Archived | Nov 1, 2024 to Nov 30, 2024 |
| Chlorine | Archived | Oct 1, 2024 to Oct 31, 2024 |
| Chlorine | Archived | Sep 1, 2024 to Sep 30, 2024 |
| Chlorine | Archived | Aug 1, 2024 to Aug 31, 2024 |
| Chlorine | Archived | Jul 1, 2024 to Jul 31, 2024 |
| Chlorine | Archived | Jun 1, 2024 to Jun 30, 2024 |
| Chlorine | Archived | May 1, 2024 to May 31, 2024 |
| Chlorine | Archived | Apr 1, 2024 to Apr 30, 2024 |
| Consumer Confidence Rule | Resolved | Oct 1, 2022 to Feb 8, 2023 |
| Consumer Confidence Rule | Resolved | Jul 1, 2022 to Jan 1, 2023 |
| Public Notice | Resolved | Mar 23, 2022 to Feb 7, 2023 |
| Consumer Confidence Rule | Resolved | Oct 1, 2021 to Feb 8, 2023 |
| Consumer Confidence Rule | Resolved | Jul 1, 2021 to Jan 19, 2023 |
Hardness meter
What does nearby environmental evidence show?
18.3
PPM as CaCO₃
Soft
PPM
18.3
GPG
1.1
Regional environmental evidence
USGS hardness classification scale
18.3 PPM
Soft
0–60Moderate
61–120Hard
121–180Very hard
181+
0–60Moderate
61–120Hard
121–180Very hard
181+
Parts per million
18.3
mg/L as CaCO₃ equivalent
Grains per gallon
1.1
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
4
Nearest site
2.2 mi
Observation range
Jul 13, 2017–Apr 26, 2021
Regional evidence confidence
Moderate
Median of the latest source-type-aligned hardness observation at each monitoring site within 25 miles. Nearest monitoring location: 15N.18W.04.332 (Well).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 87301 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Gallup median
18 PPM
About the same1 indexed ZIP readings · Range 18.3–18.3 PPM
New Mexico median
206 PPM
188 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 Gallup
Is tap water safe in Gallup?+
EPA ECHO reports 16 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.