Hardness
Hard
145.5 PPM · 8.5 GPG
Local water dashboard
Official source aggregationWater quality in La Plata, NM 87418
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for San Juan County.
No active health-based violation reported
- Primary matched system
- Upper La Plata Water Users Association
- Source water
- Surface water
- County
- San Juan 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
6.0e-4 mg/L
4% of action level
Utility match
1 system
Serves 2,265 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
145.5 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
145.5
mg/L as CaCO₃ equivalent
Grains per gallon
8.5
1 GPG ≈ 17.1 PPM
What this means at home
At 145.5 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
116
Nearest site
11.5 mi
Observation range
Feb 16, 2016–Mar 30, 2026
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: ANIMAS RIVER BELOW AZTEC, NM (Stream).USGS source documentation ↗
Regional context
Is 87418 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
La Plata median
146 PPM
About the same1 indexed ZIP readings · Range 145.5–145.5 PPM
New Mexico median
228 PPM
82 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)
6.0e-4 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 6.0e-4
EPA limit 0.015
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 2
- Health-based
- 0
- Active health-based
- 0
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Total Haloacetic Acids (HAA5) | NM3510624 | Resolved | Aug 1, 2021through Oct 31, 2021 |
| TTHM | NM3510624 | Resolved | Aug 1, 2021through Oct 31, 2021 |
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 La Plata ZIP 87418 using 145.5 PPM nearby hardness and 1 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
145.5 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 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 La Plata
Is tap water safe in La Plata?+
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 145.5 PPM, or 8.5 grains per gallon, classified as hard. This is not a household tap measurement.
Do I need a water softener?+
At 145.5 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.