Hardness
Very Hard
442.5 PPM · 25.9 GPG
Local water dashboard
Official source aggregationWater quality in Mesilla, NM 88046
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Doña Ana County.
No active health-based violation reported
- Primary matched system
- Mesilla Water System
- Source water
- Groundwater
- County
- Doña Ana County
- Profile updated
At a glance
What the current records say
EPA quarter 2026Q2
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0.0029 mg/L
19% of action level
Utility match
1 system
Serves 2,167 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
442.5 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
442.5
mg/L as CaCO₃ equivalent
Grains per gallon
25.9
1 GPG ≈ 17.1 PPM
What this means at home
At 442.5 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
110
Nearest site
2.5 mi
Observation range
Apr 4, 2016–Sep 14, 2022
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: MBOWN-31 - 23S.01E.22.241C (LC-2C) (Well).USGS source documentation ↗
Regional context
Is 88046 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Mesilla median
443 PPM
About the same1 indexed ZIP readings · Range 442.5–442.5 PPM
New Mexico median
228 PPM
215 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)
0.0029 mg/L
Reported Dec 31, 2024
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 0.0029
EPA limit 0.015
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 5
- Health-based
- 2
- Active health-based
- 0
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Groundwater RuleHealth-based | NM3560007 | Resolved | Nov 20, 2024through Feb 25, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | NM3560007 | Resolved | Oct 17, 2024through Feb 12, 2026 |
| LEAD AND COPPER RULE REVISIONS | NM3560007 | Resolved | Oct 17, 2024through Feb 12, 2026 |
| Public Notice | NM3560007 | Resolved | Dec 19, 2021through Jul 25, 2023 |
| Public Notice | NM3560007 | Unaddressed | May 16, 2013 |
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 Mesilla ZIP 88046 using 442.5 PPM nearby hardness and 1 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
442.5 PPM is 4× 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 Mesilla
Is tap water safe in Mesilla?+
EPA ECHO shows no active health-based violation for the associated systems in this reporting snapshot. This does not prove every contaminant is absent; federal records can lag and household plumbing can change tap conditions.
How hard is the water?+
Nearby USGS observations produce an estimate of 442.5 PPM, or 25.9 grains per gallon, classified as very hard. This is not a household tap measurement.
Do I need a water softener?+
At 442.5 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.