Hardness
Very Hard
234 PPM · 13.7 GPG
Local water dashboard
Official source aggregationWater quality in Deerfield, MI 49238
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Lenawee County.
1 reported benchmark flag
- Primary matched system
- Deerfield
- Source water
- Surface water
- County
- Lenawee 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
Not reported
Check the utility CCR or tap test
Utility match
1 system
Serves 943 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
234 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
234
mg/L as CaCO₃ equivalent
Grains per gallon
13.7
1 GPG ≈ 17.1 PPM
What this means at home
At 234 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
4
Nearest site
28 mi
Observation range
Jan 7, 2016–Jun 9, 2026
Estimate confidence
Low
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: Maumee River at Waterville OH (Stream).USGS source documentation ↗
Regional context
Is 49238 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Deerfield median
234 PPM
About the same1 indexed ZIP readings · Range 234–234 PPM
Michigan median
283 PPM
49 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.
0 pass1 fail
Lead (PB90)
Not available
No numerical 90th-percentile result
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.
ETHYLENE DIBROMIDE
Measured in MG/L
Local 6.0e-5
EPA limit 5.0e-5
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 19
- Health-based
- 1
- Active health-based
- 0
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| ETHYLENE DIBROMIDEHealth-basedReported 6.0e-5 MG/L · MCL 5.0e-5 | MI0001770 | Resolved | Apr 1, 2025through Jun 30, 2025 |
| ETHYLENE DIBROMIDE | MI0001770 | Resolved | Jul 1, 2024through Sep 30, 2024 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MI0001770 | Resolved | Jul 1, 2024through Sep 30, 2024 |
| BHC-GAMMA | MI0001770 | Resolved | Oct 1, 2022through Dec 31, 2022 |
| Simazine | MI0001770 | Resolved | Oct 1, 2022through Dec 31, 2022 |
| Di(2-ethylhexyl) phthalate | MI0001770 | Resolved | Oct 1, 2022through Dec 31, 2022 |
| LASSO | MI0001770 | Resolved | Oct 1, 2022through Dec 31, 2022 |
| HEXACHLOROBENZENE | MI0001770 | Resolved | Oct 1, 2022through Dec 31, 2022 |
| Total Polychlorinated Biphenyls (PCB) | MI0001770 | Resolved | Oct 1, 2022through Dec 31, 2022 |
| Chlordane | MI0001770 | Resolved | Oct 1, 2022through Dec 31, 2022 |
| Atrazine | MI0001770 | Resolved | Oct 1, 2022through Dec 31, 2022 |
| Di(2-ethylhexyl) adipate | MI0001770 | Resolved | Oct 1, 2022through Dec 31, 2022 |
| Methoxychlor | MI0001770 | Resolved | Oct 1, 2022through Dec 31, 2022 |
| Heptachlor | MI0001770 | Resolved | Oct 1, 2022through Dec 31, 2022 |
| Benzo(a)pyrene | MI0001770 | Resolved | Oct 1, 2022through Dec 31, 2022 |
| Endrin | MI0001770 | Resolved | Oct 1, 2022through Dec 31, 2022 |
| Toxaphene | MI0001770 | Resolved | Oct 1, 2022through Dec 31, 2022 |
| Heptachlor epoxide | MI0001770 | Resolved | Oct 1, 2022through Dec 31, 2022 |
| Hexachlorocyclopentadiene | MI0001770 | Resolved | Oct 1, 2022through Dec 31, 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
Your personalized water action plan
Matched to Deerfield ZIP 49238 using 234 PPM nearby hardness and 1 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
234 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
ETHYLENE DIBROMIDE 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 Deerfield
Is tap water safe in Deerfield?+
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 234 PPM, or 13.7 grains per gallon, classified as very hard. This is not a household tap measurement.
Do I need a water softener?+
At 234 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.