Hardness
Very Hard
312 PPM · 18.2 GPG
Local water dashboard
Official source aggregationWater quality in Edinburg, IL 62531
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Christian County.
1 reported benchmark flag
- Primary matched system
- Edinburg
- Source water
- Groundwater
- County
- Christian 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
0.008 mg/L
53% of action level
Utility match
1 system
Serves 1,068 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
312 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
312
mg/L as CaCO₃ equivalent
Grains per gallon
18.2
1 GPG ≈ 17.1 PPM
What this means at home
At 312 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
27
Nearest site
33.9 mi
Observation range
May 7, 2018–Jul 30, 2025
Estimate confidence
Low
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: 18N 3E-18.6a (Well).USGS source documentation ↗
Regional context
Is 62531 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Edinburg median
312 PPM
About the same1 indexed ZIP readings · Range 312–312 PPM
Illinois median
285 PPM
27 PPM higher1065 indexed ZIP readings · Range 115–408 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 pass1 fail
Lead (PB90)
0.008 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.
Lead (90th percentile)
Measured in mg/L
Local 0.008
EPA limit 0.015
TTHM
Measured in MG/L
Local 0.1
EPA limit 0.08
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 16
- Health-based
- 7
- Active health-based
- 0
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Public Notice | IL0210150 | Unaddressed | Aug 22, 2025 |
| TTHM | IL0210150 | Resolved | Aug 14, 2025through Jan 21, 2026 |
| Total Haloacetic Acids (HAA5) | IL0210150 | Resolved | Aug 14, 2025through Jan 21, 2026 |
| Public Notice | IL0210150 | Resolved | Jun 14, 2025through Jun 30, 2025 |
| TTHMHealth-basedReported 0.1 MG/L · MCL 0.08 | IL0210150 | Resolved | Apr 1, 2025through Jun 30, 2025 |
| Public Notice | IL0210150 | Resolved | Mar 11, 2025through Jun 30, 2025 |
| TTHMHealth-basedReported 0.098 MG/L · MCL 0.08 | IL0210150 | Resolved | Jan 1, 2025through Mar 31, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | IL0210150 | Resolved | Oct 17, 2024through Jan 21, 2026 |
| TTHM | IL0210150 | Resolved | Oct 1, 2024through Dec 31, 2024 |
| Total Haloacetic Acids (HAA5) | IL0210150 | Resolved | Oct 1, 2024through Dec 31, 2024 |
| TTHMHealth-basedReported 0.098 MG/L · MCL 0.08 | IL0210150 | Resolved | Oct 1, 2024through Dec 31, 2024 |
| Public Notice | IL0210150 | Resolved | Sep 12, 2024through Oct 15, 2024 |
| TTHMHealth-basedReported 0.088 MG/L · MCL 0.08 | IL0210150 | Resolved | Jul 1, 2024through Sep 30, 2024 |
| Total Haloacetic Acids (HAA5) | IL0210150 | Resolved | Oct 1, 2023through Dec 31, 2023 |
| TTHMHealth-basedReported 0.082 MG/L · MCL 0.08 | IL0210150 | Resolved | Jan 1, 2023through Mar 31, 2023 |
| TTHMHealth-basedReported 0.085 MG/L · MCL 0.08 | IL0210150 | 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 Edinburg ZIP 62531 using 312 PPM nearby hardness and 2 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
312 PPM is 3× 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
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.
Frequently asked
Water questions for Edinburg
Is tap water safe in Edinburg?+
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 312 PPM, or 18.2 grains per gallon, classified as very hard. This is not a household tap measurement.
Do I need a water softener?+
At 312 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.