Hardness
Hard
151.5 PPM · 8.9 GPG
Local water dashboard
Official source aggregationWater quality in Continental Divide, NM 87312
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Mckinley County.
2 active health-based violations
- Primary matched system
- Top Of The World Water Association Corp
- Source water
- Groundwater
- County
- Mckinley County
- Profile updated
At a glance
What the current records say
EPA quarter 2026Q2
Compliance screen
Review needed
2 active health-based records
Lead 90th percentile
0.001 mg/L
7% of action level
Utility match
1 system
Serves 177 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
151.5 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
151.5
mg/L as CaCO₃ equivalent
Grains per gallon
8.9
1 GPG ≈ 17.1 PPM
What this means at home
At 151.5 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
52
Nearest site
22.2 mi
Observation range
Jun 10, 2016–Apr 26, 2021
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: 12N.11W.09.424 8 (Well).USGS source documentation ↗
Regional context
Is 87312 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Continental Divide median
152 PPM
About the same1 indexed ZIP readings · Range 151.5–151.5 PPM
New Mexico median
228 PPM
76 PPM lower194 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)
0.001 mg/L
Reported Dec 31, 2013
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 0.001
EPA limit 0.015
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 6
- Health-based
- 4
- Active health-based
- 2
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Groundwater RuleHealth-based | NM3532617 | Resolved | Mar 15, 2025through Sep 18, 2025 |
| Groundwater RuleHealth-based | NM3532617 | Unaddressed | Mar 15, 2025 |
| Groundwater RuleHealth-based | NM3532617 | Unaddressed | Mar 15, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | NM3532617 | Resolved | Oct 17, 2024through Oct 16, 2024 |
| LEAD AND COPPER RULE REVISIONS | NM3532617 | Resolved | Oct 17, 2024through Oct 16, 2024 |
| Public Notice | NM3532617 | Resolved | May 27, 2023through Jun 14, 2024 |
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 Continental Divide ZIP 87312 using 151.5 PPM nearby hardness and 1 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
151.5 PPM is 1× 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
Under-Sink Reverse Osmosis System
Groundwater Rule 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.
Frequently asked
Water questions for Continental Divide
Is tap water safe in Continental Divide?+
EPA ECHO reports 2 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 151.5 PPM, or 8.9 grains per gallon, classified as hard. This is not a household tap measurement.
Do I need a water softener?+
At 151.5 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.