Hardness
Very Hard
200 PPM · 11.7 GPG
Local water dashboard
Official source aggregationWater quality in Eureka, NV 89316
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Eureka County.
1 reported benchmark flag
- Primary matched system
- Eureka Water Association
- Source water
- Groundwater
- County
- Eureka 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
0.005 mg/L
33% of action level
Utility match
1 system
Serves 450 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
200 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
200
mg/L as CaCO₃ equivalent
Grains per gallon
11.7
1 GPG ≈ 17.1 PPM
What this means at home
At 200 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
31
Nearest site
13 mi
Observation range
Sep 19, 2016–Sep 23, 2025
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: 139 N22 E51 22BACC1 GMI-RWX-219 (Well).USGS source documentation ↗
Regional context
Is 89316 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Eureka median
200 PPM
About the same1 indexed ZIP readings · Range 200–200 PPM
Nevada median
227 PPM
27 PPM lower98 indexed ZIP readings · Range 9.6–335 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 pass1 fail
Lead (PB90)
0.005 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.
Lead (90th percentile)
Measured in mg/L
Local 0.005
EPA limit 0.015
Arsenic
Measured in MG/L
Local 0.011
EPA limit 0.01
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 3
- Health-based
- 1
- Active health-based
- 0
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Consumer Confidence Rule | NV0000044 | Resolved | Oct 1, 2024through Jun 30, 2025 |
| Nitrate | NV0000044 | Resolved | Jan 1, 2023through Dec 31, 2023 |
| ArsenicHealth-basedReported 0.011 MG/L · MCL 0.01 | NV0000044 | Resolved | Jan 1, 2021through Mar 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 Eureka ZIP 89316 using 200 PPM nearby hardness and 2 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
200 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
Under-Sink Reverse Osmosis System
Arsenic 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 Eureka
Is tap water safe in Eureka?+
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 200 PPM, or 11.7 grains per gallon, classified as very hard. This is not a household tap measurement.
Do I need a water softener?+
At 200 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.