Hardness
Very Hard
240 PPM · 14 GPG
Local water dashboard
Official source aggregationWater quality in Dearborn Heights, MI 48127
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Wayne County.
1 active health-based violation
- Primary matched system
- Dearborn Heights
- Source water
- Surface water
- County
- Wayne County
- Profile updated
At a glance
What the current records say
EPA quarter 2026Q2
Compliance screen
Review needed
1 active health-based record
Lead 90th percentile
0 mg/L
0% of action level
Utility match
1 system
Serves 57,774 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
240 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
240
mg/L as CaCO₃ equivalent
Grains per gallon
14
1 GPG ≈ 17.1 PPM
What this means at home
At 240 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
3
Nearest site
23.3 mi
Observation range
Jan 7, 2016–Jun 9, 2026
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: CLINTON RIVER AT STERLING HEIGHTS, MI (Stream).USGS source documentation ↗
Regional context
Is 48127 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Dearborn Heights median
240 PPM
About the same2 indexed ZIP readings · Range 240–240 PPM
Michigan median
283 PPM
43 PPM lower504 indexed ZIP readings · Range 41.3–459.5 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 pass
Lead (PB90)
0 mg/L
Reported Dec 31, 2025
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.
Lead (90th percentile)
Measured in mg/L
Local 0
EPA limit 0.015
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 15
- Health-based
- 1
- Active health-based
- 1
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Public Notice | MI0001740 | Unaddressed | Jan 9, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | MI0001740 | Unaddressed | Oct 17, 2024 |
| LEAD AND COPPER RULE REVISIONS | MI0001740 | Unaddressed | Oct 17, 2024 |
| Lead and Copper Rule | MI0001740 | Resolved | Oct 11, 2024through Oct 30, 2024 |
| Total Haloacetic Acids (HAA5) | MI0001740 | Resolved | Oct 1, 2024through Dec 31, 2024 |
| TTHM | MI0001740 | Resolved | Oct 1, 2024through Dec 31, 2024 |
| Consumer Confidence Rule | MI0001740 | Resolved | Jul 1, 2024through Dec 9, 2024 |
| Consumer Confidence Rule | MI0001740 | Resolved | Jul 1, 2023through Dec 5, 2023 |
| Total Haloacetic Acids (HAA5) | MI0001740 | Resolved | Jul 1, 2023through Sep 30, 2023 |
| TTHM | MI0001740 | Resolved | Jul 1, 2023through Sep 30, 2023 |
| Lead and Copper Rule | MI0001740 | Resolved | Oct 11, 2022through Nov 30, 2022 |
| Consumer Confidence Rule | MI0001740 | Resolved | Jul 1, 2022through Sep 22, 2022 |
| Lead and Copper Rule | MI0001740 | Resolved | Sep 29, 2021through Oct 6, 2021 |
| TTHM | MI0001740 | Resolved | Apr 1, 2021through Jun 30, 2021 |
| Total Haloacetic Acids (HAA5) | MI0001740 | Resolved | Apr 1, 2021through Jun 30, 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 Dearborn Heights ZIP 48127 using 240 PPM nearby hardness and 1 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
240 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
LEAD AND COPPER RULE REVISIONS 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
Compare ZIPs in Dearborn Heights
Estimates can differ across a city because monitoring locations and associated systems differ.
Frequently asked
Water questions for Dearborn Heights
Is tap water safe in Dearborn Heights?+
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.
How hard is the water?+
Nearby USGS observations produce an estimate of 240 PPM, or 14 grains per gallon, classified as very hard. This is not a household tap measurement.
Do I need a water softener?+
At 240 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.