Hardness
Very Hard
1318.5 PPM · 77.1 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 Mobile County.
At a glance
EPA quarter 2026Q2
Hardness
Very Hard
1318.5 PPM · 77.1 GPG
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0 mg/L
0% of action level
Utility match
1 system
Serves 29,190 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
1318.5 PPM
Parts per million
1318.5
mg/L as CaCO₃ equivalent
Grains per gallon
77.1
1 GPG ≈ 17.1 PPM
What this means at home
At 1318.5 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
6
Nearest site
38.7 mi
Observation range
Jan 14, 2016–May 5, 2026
Estimate confidence
Low
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: PASCAGOULA RIVER AT MI 1 AT PASCAGOULA, MS (Stream).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.
Prichard median
1319 PPM
About the same4 indexed ZIP readings · Range 1318.5–1318.5 PPM
Alabama median
38 PPM
1281 PPM higher406 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 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.
Measured in mg/L
Local 0
EPA limit 0.015
Measured in MG/L
Local 0.1
EPA limit 0.08
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| TTHMHealth-basedReported 0.1 MG/L · MCL 0.08 | AL0001015 | Archived | Jan 1, 2026through Mar 31, 2026 |
| TTHMHealth-basedReported 0.102 MG/L · MCL 0.08 | AL0001015 | Archived | Oct 1, 2025through Dec 31, 2025 |
| TTHMHealth-basedReported 0.096 MG/L · MCL 0.08 | AL0001015 | Archived | Jul 1, 2025through Sep 30, 2025 |
| TTHMHealth-basedReported 0.106 MG/L · MCL 0.08 | AL0001015 | Archived | Apr 1, 2025through Jun 30, 2025 |
| TTHMHealth-basedReported 0.101 MG/L · MCL 0.08 | AL0001015 | Archived | Jan 1, 2025through Mar 31, 2025 |
| TTHMHealth-basedReported 0.099 MG/L · MCL 0.08 | AL0001015 | Archived | Oct 1, 2024through Dec 31, 2024 |
| TTHMHealth-basedReported 0.099 MG/L · MCL 0.08 | AL0001015 | Archived | Jul 1, 2024through Sep 30, 2024 |
| TTHMHealth-basedReported 0.093 MG/L · MCL 0.08 | AL0001015 | Archived | Apr 1, 2024through Jun 30, 2024 |
| TTHM | AL0001015 | Resolved | May 10, 2023through Aug 20, 2023 |
| Total Haloacetic Acids (HAA5) | AL0001015 | Resolved | May 10, 2023through Aug 20, 2023 |
| TTHM | AL0001015 | Resolved | Feb 15, 2023through May 14, 2023 |
| Total Haloacetic Acids (HAA5) | AL0001015 | Resolved | Feb 15, 2023through May 14, 2023 |
| TTHM | AL0001015 | Resolved | Nov 9, 2022through Feb 19, 2023 |
| Total Haloacetic Acids (HAA5) | AL0001015 | Resolved | Nov 9, 2022through Feb 19, 2023 |
| TTHM | AL0001015 | Resolved | Aug 10, 2022through Nov 20, 2022 |
| Total Haloacetic Acids (HAA5) | AL0001015 | Resolved | Aug 10, 2022through Nov 20, 2022 |
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 Prichard ZIP 36610 using 1318.5 PPM nearby hardness and 2 reported measurement benchmarks.
Scale protection
1318.5 PPM is 11× 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
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 1318.5 PPM, or 77.1 grains per gallon, classified as very hard. This is not a household tap measurement.
At 1318.5 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.