Hardness
Soft
17.3 PPM · 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 Shelby County.
At a glance
EPA quarter 2026Q2
Hardness
Soft
17.3 PPM · 1 GPG
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0.0011 mg/L
7% of action level
Utility match
1 system
Serves 40,986 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
17.3 PPM
Parts per million
17.3
mg/L as CaCO₃ equivalent
Grains per gallon
1
1 GPG ≈ 17.1 PPM
What this means at home
At 17.3 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
19
Nearest site
24.9 mi
Observation range
Jul 10, 2019–Aug 10, 2022
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: Well NAWQA FLH 30 Chilton County Al (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.
Alabaster median
15 PPM
About the same2 indexed ZIP readings · Range 13.2–17.3 PPM
Alabama median
38 PPM
21 PPM lower406 indexed ZIP readings · Range 7.4–2810 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)
0.0011 mg/L
Reported Dec 31, 2023
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.
Measured in mg/L
Local 0.0011
EPA limit 0.015
Measured in MG/L
Local 0.081
EPA limit 0.08
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| TTHMHealth-basedReported 0.081 MG/L · MCL 0.08 | AL0001148 | Archived | Jan 1, 2026through Mar 31, 2026 |
| TTHM | AL0001148 | Resolved | Apr 1, 2022through Jun 30, 2022 |
| Total Haloacetic Acids (HAA5) | AL0001148 | Resolved | Apr 1, 2022through Jun 30, 2022 |
| CARBON, TOTAL | AL0001148 | Resolved | Oct 1, 2021through Dec 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
Matched to Alabaster ZIP 35007 using 17.3 PPM nearby hardness and 2 reported measurement benchmarks.
Drinking water protection
TTHM 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.
Nearby indexed reports
Estimates can differ across a city because monitoring locations and associated systems differ.
Frequently asked
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.
Nearby USGS observations produce an estimate of 17.3 PPM, or 1 grains per gallon, classified as soft. This is not a household tap measurement.
There is no high-hardness trigger in this profile. Confirm with a tap test before buying equipment.