Hardness
Very Hard
310.5 PPM · 18.2 GPG
Local water dashboard
Official source aggregationWater quality in Blue Mound, IL 62513
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 active health-based violation
- Primary matched system
- Blue Mound
- Source water
- Groundwater
- County
- Christian 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
0.0013 mg/L
9% of action level
Utility match
1 system
Serves 1,300 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
310.5 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
310.5
mg/L as CaCO₃ equivalent
Grains per gallon
18.2
1 GPG ≈ 17.1 PPM
What this means at home
At 310.5 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
30
Nearest site
23.8 mi
Observation range
May 1, 2018–Jul 30, 2025
Estimate confidence
Moderate
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 62513 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Blue Mound median
311 PPM
About the same1 indexed ZIP readings · Range 310.5–310.5 PPM
Illinois median
285 PPM
26 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)
0.0013 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 0.0013
EPA limit 0.015
Nitrate
Measured in MG/L
Local 12
EPA limit 10
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 17
- Health-based
- 2
- Active health-based
- 1
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Public Notice | IL1150100 | Unaddressed | Oct 12, 2025 |
| Public Notice | IL1150100 | Unaddressed | Aug 22, 2025 |
| LEAD AND COPPER RULE REVISIONS | IL1150100 | Unaddressed | Jul 2, 2025 |
| Consumer Confidence Rule | IL1150100 | Unaddressed | Jul 1, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | IL1150100 | Unaddressed | Oct 17, 2024 |
| Public Notice | IL1150100 | Resolved | Oct 11, 2024through Oct 7, 2024 |
| NitrateHealth-basedReported 12 MG/L · MCL 10 | IL1150100 | Resolved | Oct 1, 2024through Dec 31, 2024 |
| Consumer Confidence Rule | IL1150100 | Resolved | Jul 1, 2024through Jun 16, 2025 |
| TTHM | IL1150100 | Resolved | Jan 1, 2024through Dec 31, 2024 |
| Consumer Confidence Rule | IL1150100 | Resolved | Jul 1, 2023through Oct 10, 2023 |
| Public Notice | IL1150100 | Resolved | Mar 22, 2023through Jun 1, 2023 |
| Public Notice | IL1150100 | Resolved | Mar 22, 2023through Jun 1, 2023 |
| TTHM | IL1150100 | Resolved | Jan 1, 2023through Dec 31, 2023 |
| Total Haloacetic Acids (HAA5) | IL1150100 | Resolved | Jan 1, 2023through Dec 31, 2023 |
| Lead and Copper Rule | IL1150100 | Resolved | Dec 30, 2022through Feb 2, 2023 |
| Revised Total Coliform Rule | IL1150100 | Resolved | Feb 1, 2022through Feb 28, 2022 |
| Chlorine | IL1150100 | Resolved | Jan 1, 2022through Mar 4, 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 Blue Mound ZIP 62513 using 310.5 PPM nearby hardness and 2 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
310.5 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
Nitrate, LEAD AND COPPER RULE REVISIONS have 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 Blue Mound
Is tap water safe in Blue Mound?+
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 310.5 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 310.5 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.