Hardness
Very Hard
258 PPM · 15.1 GPG
Local water dashboard
Official source aggregationWater quality in Anna, IL 62906
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Union County.
1 reported benchmark flag
- Primary matched system
- Anna
- Source water
- Groundwater
- County
- Union 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
0.0014 mg/L
9% of action level
Utility match
2 systems
Serves 4,910 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
258 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
258
mg/L as CaCO₃ equivalent
Grains per gallon
15.1
1 GPG ≈ 17.1 PPM
What this means at home
At 258 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
21
Nearest site
20 mi
Observation range
Feb 23, 2016–Jul 8, 2024
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: 15S 1E-22.5a1 (Well).USGS source documentation ↗
Regional context
Is 62906 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Anna median
258 PPM
About the same1 indexed ZIP readings · Range 258–258 PPM
Illinois median
285 PPM
27 PPM lower1065 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)
0.0014 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 0.0014
EPA limit 0.015
TTHM
Measured in MG/L
Local 0.083
EPA limit 0.08
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 10
- Health-based
- 5
- Active health-based
- 0
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| LEAD AND COPPER RULE REVISIONS | IL1815500 | Unaddressed | Jul 2, 2025 |
| Consumer Confidence Rule | IL1810050 | Resolved | Jul 1, 2025through Aug 1, 2025 |
| Consumer Confidence Rule | IL1815500 | Unaddressed | Jul 1, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | IL1815500 | Resolved | Oct 17, 2024through Sep 2, 2025 |
| TTHMHealth-basedReported 0.083 MG/L · MCL 0.08 | IL1810050 | Resolved | Apr 1, 2024through Jun 30, 2024 |
| TTHMHealth-basedReported 0.085 MG/L · MCL 0.08 | IL1810050 | Resolved | Jan 1, 2024through Mar 31, 2024 |
| TTHM | IL1815500 | Resolved | Jan 1, 2024through Dec 31, 2024 |
| Total Haloacetic Acids (HAA5) | IL1815500 | Resolved | Jan 1, 2024through Dec 31, 2024 |
| TTHMHealth-basedReported 0.085 MG/L · MCL 0.08 | IL1810050 | Resolved | Oct 1, 2023through Dec 31, 2023 |
| TTHMHealth-basedReported 0.086 MG/L · MCL 0.08 | IL1810050 | Resolved | Jul 1, 2023through Sep 30, 2023 |
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 Anna ZIP 62906 using 258 PPM nearby hardness and 2 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
258 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
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 Anna
Is tap water safe in Anna?+
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 258 PPM, or 15.1 grains per gallon, classified as very hard. This is not a household tap measurement.
Do I need a water softener?+
At 258 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.