Hardness
Very Hard
287.5 PPM · 16.8 GPG
Local water dashboard
Official source aggregationA source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Lincoln County.
At a glance
EPA quarter 2026Q2
Hardness
Very Hard
287.5 PPM · 16.8 GPG
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0.0035 mg/L
23% of action level
Utility match
4 systems
Serves 15,947 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
287.5 PPM
Parts per million
287.5
mg/L as CaCO₃ equivalent
Grains per gallon
16.8
1 GPG ≈ 17.1 PPM
What this means at home
At 287.5 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
8
Nearest site
2.9 mi
Observation range
Mar 18, 2017–Aug 15, 2024
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: EAGLE CREEK SWALLOW NR. ALTO, NM (Stream).USGS source documentation ↗
Regional context
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Ruidoso median
288 PPM
About the same4 indexed ZIP readings · Range 287.5–319 PPM
New Mexico median
228 PPM
60 PPM higher194 indexed ZIP readings · Range 74.2–688.5 PPM
EPA benchmark screen
Available numerical results from associated SDWIS community water systems, compared with the applicable action level or federal MCL. Federal measured-value coverage is incomplete.
Lead (PB90)
0.0035 mg/L
Reported Dec 31, 2025
Copper (CU90)
Not available
No numerical 90th-percentile result
Numerical coverage
2 comparable results
Missing values remain blank; absence is not treated as a pass.
Measured in mg/L
Local 0.0035
EPA limit 0.015
Measured in MG/L
Local 0.258
EPA limit 0.08
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| LEAD AND COPPER RULE REVISIONS | NM3521114 | Resolved | Oct 17, 2024through Nov 6, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | NM3521114 | Resolved | Oct 17, 2024through Nov 6, 2025 |
| Consumer Confidence Rule | NM3521114 | Resolved | Jul 1, 2021through Aug 18, 2021 |
| Public Notice | NM3513114 | Resolved | May 2, 2021through May 3, 2021 |
| TTHMHealth-basedReported 0.258 MG/L · MCL 0.08 | NM3513114 | Resolved | Jan 1, 2021through Mar 31, 2021 |
| Revised Total Coliform Rule | NM3513114 | Unaddressed | Jun 2, 2016 |
| Public Notice | NM3513114 | Unaddressed | Dec 31, 2012 |
| Lead and Copper RuleReported 0 | NM3558214 | Addressed | Jan 1, 1997 |
No reported violation does not prove that every contaminant was tested or absent; SDWIS measured values are incomplete and lag state records.
Solutions matcher
Matched to Ruidoso ZIP 88312 using 287.5 PPM nearby hardness and 2 reported measurement benchmarks.
Scale protection
287.5 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 systemsDrinking water protection
TTHM has a measured benchmark flag or active health-based SDWIS record in this profile.
A certified multi-stage RO system targets a broader range of dissolved contaminants at the kitchen tap.
Explore under-sink filtrationAffiliate 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.
Nearby indexed reports
Estimates can differ across a city because monitoring locations and associated systems differ.
Frequently asked
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.
Nearby USGS observations produce an estimate of 287.5 PPM, or 16.8 grains per gallon, classified as very hard. This is not a household tap measurement.
At 287.5 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.