Hardness
Very Hard
189 PPM · 11.1 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 Taos County.
At a glance
EPA quarter 2026Q2
Hardness
Very Hard
189 PPM · 11.1 GPG
Compliance screen
Review needed
1 active health-based record
Lead 90th percentile
0.0015 mg/L
10% of action level
Utility match
3 systems
Serves 500 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
189 PPM
Parts per million
189
mg/L as CaCO₃ equivalent
Grains per gallon
11.1
1 GPG ≈ 17.1 PPM
What this means at home
At 189 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
39
Nearest site
21.5 mi
Observation range
Jul 20, 2016–Apr 22, 2026
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: 25N.13E.17.323 (Well).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.
Dixon median
186 PPM
About the same2 indexed ZIP readings · Range 182.5–189 PPM
New Mexico median
228 PPM
39 PPM lower194 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)
0.0015 mg/L
Reported Jun 30, 2026
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.
Measured in mg/L
Local 0.0015
EPA limit 0.015
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Public Notice | NM3501421 | Unaddressed | Feb 20, 2026 |
| Public Notice | NM3502621 | Unaddressed | Feb 14, 2026 |
| Consumer Confidence Rule | NM3500721 | Unaddressed | Oct 1, 2025 |
| Lead and Copper Rule | NM3502621 | Unaddressed | Sep 29, 2025 |
| Public Notice | NM3500721 | Unaddressed | Aug 23, 2025 |
| Lead and Copper Rule | NM3501421 | Resolved | Jul 1, 2025through Dec 17, 2025 |
| Consumer Confidence Rule | NM3502621 | Resolved | Jul 1, 2025through Jul 30, 2025 |
| LEAD AND COPPER RULE REVISIONS | NM3501421 | Resolved | Oct 17, 2024through Sep 4, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | NM3501421 | Resolved | Oct 17, 2024through Sep 4, 2025 |
| LEAD AND COPPER RULE REVISIONS | NM3502621 | Resolved | Oct 17, 2024through Mar 3, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | NM3502621 | Resolved | Oct 17, 2024through Mar 3, 2025 |
| Lead and Copper Rule | NM3501421 | Resolved | Oct 1, 2024through Dec 17, 2025 |
| Lead and Copper Rule | NM3502621 | Resolved | Oct 1, 2024through Jun 25, 2025 |
| Consumer Confidence Rule | NM3502621 | Resolved | Jul 1, 2024through Sep 24, 2024 |
| Lead and Copper Rule | NM3500721 | Resolved | Oct 1, 2022through Jul 7, 2023 |
| Public Notice | NM3500721 | Resolved | Feb 21, 2021through Dec 10, 2021 |
| Public Notice | NM3500721 | Resolved | Feb 12, 2021through Nov 12, 2021 |
| Lead and Copper Rule | NM3502621 | Unaddressed | Dec 30, 2015 |
| Public Notice | NM3500721 | Unaddressed | Dec 3, 2011 |
| Public Notice | NM3500721 | Unaddressed | Dec 3, 2011 |
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 Dixon ZIP 87531 using 189 PPM nearby hardness and 1 reported measurement benchmarks.
Scale protection
189 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.
Nearby indexed reports
Estimates can differ across a city because monitoring locations and associated systems differ.
Frequently asked
EPA ECHO reports 1 active health-based violation among the associated community water systems. Review the affected utility's current notice and Consumer Confidence Report.
Nearby USGS observations produce an estimate of 189 PPM, or 11.1 grains per gallon, classified as very hard. This is not a household tap measurement.
At 189 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.