Hardness
Soft
30.2 PPM · 1.8 GPG
Local water dashboard
Official source aggregationWater quality in Salmon, ID 83467
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Lemhi County.
2 reported benchmark flags
- Primary matched system
- Salmon City Of
- Source water
- Surface water
- County
- Lemhi 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
0.006 mg/L
40% of action level
Utility match
1 system
Serves 3,158 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
30.2 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
30.2
mg/L as CaCO₃ equivalent
Grains per gallon
1.8
1 GPG ≈ 17.1 PPM
What this means at home
At 30.2 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
44.2 mi
Observation range
Mar 29, 2016–Jun 9, 2026
Estimate confidence
Low
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: Big Hole River bl Big Lake Cr at Wisdom MT (Stream).USGS source documentation ↗
Regional context
Is 83467 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Salmon median
30 PPM
About the same1 indexed ZIP readings · Range 30.2–30.2 PPM
Idaho median
168 PPM
138 PPM lower78 indexed ZIP readings · Range 22.2–339 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 pass2 fail
Lead (PB90)
0.006 mg/L
Reported Dec 31, 2022
Copper (CU90)
Not available
No numerical 90th-percentile result
Numerical coverage
3 comparable results
Missing values remain blank; absence is not treated as a pass.
Lead (90th percentile)
Measured in mg/L
Local 0.006
EPA limit 0.015
Total Haloacetic Acids (HAA5)
Measured in MG/L
Local 0.061
EPA limit 0.06
TTHM
Measured in MG/L
Local 0.097
EPA limit 0.08
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 11
- Health-based
- 8
- Active health-based
- 0
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Total Haloacetic Acids (HAA5)Health-basedReported 0.061 MG/L · MCL 0.06 | ID7300042 | Archived | Jan 1, 2026through Mar 31, 2026 |
| Total Haloacetic Acids (HAA5)Health-basedReported 0.077 MG/L · MCL 0.06 | ID7300042 | Archived | Oct 1, 2025through Dec 31, 2025 |
| Lead and Copper Rule | ID7300042 | Unaddressed | Oct 1, 2025 |
| Total Haloacetic Acids (HAA5)Health-basedReported 0.071 MG/L · MCL 0.06 | ID7300042 | Archived | Jul 1, 2025through Sep 30, 2025 |
| TTHMHealth-basedReported 0.097 MG/L · MCL 0.08 | ID7300042 | Archived | Apr 1, 2025through Jun 30, 2025 |
| Total Haloacetic Acids (HAA5)Health-basedReported 0.062 MG/L · MCL 0.06 | ID7300042 | Archived | Apr 1, 2025through Jun 30, 2025 |
| Total Haloacetic Acids (HAA5)Health-basedReported 0.075 MG/L · MCL 0.06 | ID7300042 | Resolved | Jan 1, 2022through Mar 31, 2022 |
| Total Haloacetic Acids (HAA5)Health-basedReported 0.08 MG/L · MCL 0.06 | ID7300042 | Archived | Oct 1, 2021through Dec 31, 2021 |
| Surface Water Treatment Rule | ID7300042 | Resolved | Sep 1, 2021through Sep 30, 2021 |
| Interim Enhanced Surface Water Treatment Rule | ID7300042 | Resolved | Sep 1, 2021through Sep 30, 2021 |
| Total Haloacetic Acids (HAA5)Health-basedReported 0.07 MG/L · MCL 0.06 | ID7300042 | 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 Salmon ZIP 83467 using 30.2 PPM nearby hardness and 3 reported measurement benchmarks.
Drinking water protection
Under-Sink Reverse Osmosis System
Total Haloacetic Acids (HAA5), TTHM have 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 Salmon
Is tap water safe in Salmon?+
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 30.2 PPM, or 1.8 grains per gallon, classified as soft. This is not a household tap measurement.
Do I need a water softener?+
There is no high-hardness trigger in this profile. Confirm with a tap test before buying equipment.