Hardness
Very Hard
243 PPM · 14.2 GPG
Local water dashboard
Official source aggregationWater quality in Los Lunas, NM 87031
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Valencia County.
18 active health-based violations
- Primary matched system
- Los Lunas Water System
- Source water
- Groundwater
- County
- Valencia County
- Profile updated
At a glance
What the current records say
EPA quarter 2026Q2
Compliance screen
Review needed
18 active health-based records
Lead 90th percentile
0 mg/L
0% of action level
Utility match
10 systems
Serves 19,400 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
243 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
243
mg/L as CaCO₃ equivalent
Grains per gallon
14.2
1 GPG ≈ 17.1 PPM
What this means at home
At 243 PPM, mineral scale can build up on fixtures and heating elements, reduce soap lather, and leave visible spotting. Hardness is primarily an aesthetic and appliance concern—not itself a tap-water safety rating.
USGS sites used
133
Nearest site
1.3 mi
Observation range
Jan 15, 2016–Sep 4, 2025
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: 07N.02E.SAN CLEMENTE GRANT 2 (Well).USGS source documentation ↗
Regional context
Is 87031 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Los Lunas median
243 PPM
About the same1 indexed ZIP readings · Range 243–243 PPM
New Mexico median
228 PPM
15 PPM higher194 indexed ZIP readings · Range 74.2–688.5 PPM
EPA benchmark screen
Contaminant snapshot
Available numerical results from associated SDWIS community water systems, compared with the applicable action level or federal MCL. Federal measured-value coverage is incomplete.
1 pass
Lead (PB90)
0 mg/L
Reported Dec 31, 2025
Copper (CU90)
Not available
No numerical 90th-percentile result
Numerical coverage
1 comparable result
Missing values remain blank; absence is not treated as a pass.
Lead (90th percentile)
Measured in mg/L
Local 0
EPA limit 0.015
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 427
- Health-based
- 24
- Active health-based
- 18
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Revised Total Coliform Rule | NM3522532 | Archived | Mar 1, 2026through Mar 31, 2026 |
| Revised Total Coliform Rule | NM3501232 | Archived | Mar 1, 2026through Mar 31, 2026 |
| Revised Total Coliform Rule | NM3522532 | Archived | Feb 1, 2026through Feb 28, 2026 |
| Revised Total Coliform Rule | NM3501232 | Archived | Feb 1, 2026through Feb 28, 2026 |
| Groundwater RuleHealth-based | NM3580232 | Resolved | Jan 10, 2026through Oct 2, 2025 |
| Lead and Copper Rule | NM3522532 | Unaddressed | Jan 1, 2026 |
| Revised Total Coliform Rule | NM3522532 | Archived | Jan 1, 2026through Jan 31, 2026 |
| Revised Total Coliform Rule | NM3501232 | Archived | Jan 1, 2026through Jan 31, 2026 |
| Lead and Copper Rule | NM3501232 | Addressed | Jan 1, 2026 |
| Public Notice | NM3501232 | Unaddressed | Dec 12, 2025 |
| Revised Total Coliform Rule | NM3522532 | Archived | Dec 1, 2025through Dec 31, 2025 |
| Revised Total Coliform Rule | NM3501232 | Archived | Dec 1, 2025through Dec 31, 2025 |
| Public Notice | NM3501232 | Unaddressed | Nov 7, 2025 |
| Revised Total Coliform Rule | NM3522532 | Archived | Nov 1, 2025through Nov 30, 2025 |
| Revised Total Coliform Rule | NM3501232 | Archived | Nov 1, 2025through Nov 30, 2025 |
| Revised Total Coliform Rule | NM3522532 | Archived | Oct 1, 2025through Oct 31, 2025 |
| Consumer Confidence Rule | NM3522532 | Addressed | Oct 1, 2025 |
| Consumer Confidence Rule | NM3501232 | Unaddressed | Oct 1, 2025 |
| Revised Total Coliform Rule | NM3501232 | Archived | Oct 1, 2025through Oct 31, 2025 |
| Revised Total Coliform Rule | NM3522532 | Archived | Sep 1, 2025through Sep 30, 2025 |
No reported violation does not prove that every contaminant was tested or absent; SDWIS measured values are incomplete and lag state records.
Solutions matcher
Your personalized water action plan
Matched to Los Lunas ZIP 87031 using 243 PPM nearby hardness and 1 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
243 PPM is 2× the high-hardness trigger used by this matcher.
Designed to reduce scale on fixtures, water heaters, glassware, and plumbing throughout the home.
Compare whole-house systemsAffiliate disclosure: we may earn a commission from qualifying purchases, at no added cost to you. Product matching is educational and does not replace certified water testing.
Frequently asked
Water questions for Los Lunas
Is tap water safe in Los Lunas?+
EPA ECHO reports 18 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?+
Nearby USGS observations produce an estimate of 243 PPM, or 14.2 grains per gallon, classified as very hard. This is not a household tap measurement.
Do I need a water softener?+
At 243 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.