Utility-reported hardness
Unavailable
Ask your provider or test your tap
Local water dashboard
Official source aggregationWater quality in Fairfield, IL 62837
Regional hardness evidence, possible serving systems, EPA compliance history, and the measurements that are—and are not—available for Wayne County.
Historical measurement record needs context
- Largest possible serving system
- Fairfield
- Source water
- Surface water
- County
- Wayne County
- Profile updated
Your tap water
What does the utility report?
Match the utility name to your water bill. These results describe the utility’s water, not a test at your home. A ZIP can include several water systems.
Utility hardness unavailable in this index
Nearby river or groundwater samples cannot tell us the hardness coming out of your tap. Ask your water provider for total hardness as CaCO₃, or test it at home.
Find an official utility report →At a glance
What the current records say
EPA quarter 2026Q2
All possible systems
No active flag
0 active health-based records
Measurements by utility
Each result belongs to a specific system.
Utility match
4 systems
Serves 6,202 people system-wide
Match the name on your water bill
Your utility’s measurements and compliance records
These are possible serving systems. A record for one system does not apply to every home in this ZIP. Confirm your provider before interpreting a measurement or notice. Federal records can lag current utility notices.
EPA snapshot: 2026Q2. Historical window begins Jan 1, 2021.
Fairfield
IL1910100 · Surface water · 6,202 people served system-wide
The system names this served city; Census place overlap links the city to this ZCTA.
No active health-based record in this imported snapshot
Find this utility’s official report →Measurements (1)
An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.
Lead (90th percentile)
EPA SDWIS Lead and Copper Rule samples
- Reported level
- 0 mg/L
- Action level
- 0.015 mg/L
0% of the listed benchmark
Monitoring period: Jan 1, 2025 to Dec 31, 2025
Violation history (17)
| Rule | Status | Period |
|---|---|---|
| CARBON, TOTALHealth-based | Archived | Oct 1, 2025 to Dec 31, 2025 |
| Simazine | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| Atrazine | Resolved | Jul 1, 2025 to Sep 30, 2025 |
| Total Haloacetic Acids (HAA5) | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| Interim Enhanced Surface Water Treatment Rule | Resolved | Sep 1, 2023 to Sep 30, 2023 |
| ETHYLENE DIBROMIDE | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| 1,2-DIBROMO-3-CHLOROPROPANE | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Pentachlorophenol | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| 2,4,5-TP | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Picloram | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Endothall | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Dinoseb | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Carbofuran | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Diquat | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| OXAMYL | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| Dalapon | Resolved | Apr 1, 2021 to Jun 30, 2021 |
| 2,4-D | Resolved | Apr 1, 2021 to Jun 30, 2021 |
Jasper Waterworks Corporation
IL1910020 · Surface water · 1,578 people served system-wide
The system names this served city; Census place overlap links the city to this ZCTA.
No active health-based record in this imported snapshot
Find this utility’s official report →Measurements (2)
An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.
Lead (90th percentile)
EPA SDWIS Lead and Copper Rule samples
- Reported level
- 0 mg/L
- Action level
- 0.015 mg/L
0% of the listed benchmark
Monitoring period: Jan 1, 2023 to Dec 31, 2025
TTHM
EPA SDWIS reported health-based violation
- Reported level
- 0.089 MG/L
- Maximum contaminant level
- 0.08 MG/L
111% of the listed benchmark
Monitoring period: Apr 1, 2024 to Jun 30, 2024
Violation history (5)
| Rule | Status | Period |
|---|---|---|
| CARBON, TOTALHealth-based | Archived | Oct 1, 2025 to Dec 31, 2025 |
| TTHMHealth-based | Resolved | Apr 1, 2024 to Jun 30, 2024 |
| TTHMHealth-based | Resolved | Jan 1, 2024 to Mar 31, 2024 |
| TTHMHealth-based | Resolved | Oct 1, 2023 to Dec 31, 2023 |
| TTHMHealth-based | Resolved | Jul 1, 2023 to Sep 30, 2023 |
New Hope Waterworks Corp
IL1915100 · Surface water · 1,285 people served system-wide
The system names this served city; Census place overlap links the city to this ZCTA.
No active health-based record in this imported snapshot
Find this utility’s official report →Measurements (2)
An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.
Lead (90th percentile)
EPA SDWIS Lead and Copper Rule samples
- Reported level
- 0.0025 mg/L
- Action level
- 0.015 mg/L
17% of the listed benchmark
Monitoring period: Jan 1, 2023 to Dec 31, 2025
TTHM
EPA SDWIS reported health-based violation
- Reported level
- 0.092 MG/L
- Maximum contaminant level
- 0.08 MG/L
115% of the listed benchmark
Monitoring period: Jul 1, 2024 to Sep 30, 2024
Violation history (10)
| Rule | Status | Period |
|---|---|---|
| Public Notice | Resolved | Feb 28, 2026 to Mar 23, 2026 |
| Public Notice | Resolved | Oct 16, 2025 to Nov 3, 2025 |
| Public Notice | Resolved | Oct 16, 2025 to Nov 3, 2025 |
| CARBON, TOTALHealth-based | Archived | Oct 1, 2025 to Dec 31, 2025 |
| Consumer Confidence Rule | Unaddressed | Jul 1, 2025 |
| Public Notice | Resolved | Jan 31, 2025 to Mar 24, 2025 |
| TTHM | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| Total Haloacetic Acids (HAA5) | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| TTHMHealth-based | Resolved | Jul 1, 2024 to Sep 30, 2024 |
| TTHMHealth-based | Resolved | Apr 1, 2024 to Jun 30, 2024 |
Boyleston Waterworks Corp
IL1915050 · Surface water · 948 people served system-wide
The system names this served city; Census place overlap links the city to this ZCTA.
No active health-based record in this imported snapshot
Find this utility’s official report →Measurements (1)
An action level is a regulatory trigger, not a pass/fail health boundary. A reported zero is the value in the source record and does not establish that lead is absent at your tap.
Lead (90th percentile)
EPA SDWIS Lead and Copper Rule samples
- Reported level
- 0 mg/L
- Action level
- 0.015 mg/L
0% of the listed benchmark
Monitoring period: Jan 1, 2023 to Dec 31, 2025
Violation history (1)
| Rule | Status | Period |
|---|---|---|
| CARBON, TOTALHealth-based | Archived | Oct 1, 2025 to Dec 31, 2025 |
Hardness estimate unavailable
No responsible local estimate yet
We did not find enough qualifying recent USGS hardness observations within 25 miles of this ZIP centroid. We leave the value blank instead of substituting a state average. Ask the serving utility or test the household tap for a property-specific result.
Evidence-first next steps
Confirm the problem before choosing treatment
This profile can help you ask the right question. It cannot select equipment for a property without a current result from the serving utility or the tap.
Confirm the serving system
ZIP boundaries and utility service areas do not perfectly match. Verify the system on a water bill before relying on system-wide records.
Read the current utility report
Use the current Consumer Confidence Report for treated-water results and official notices.
Find an official utility report →Test for the decision you face
Ask the utility for hardness or test at the tap. For health concerns, use a certified laboratory and targeted analysis.
Convert your hardness test result →Frequently asked
Water questions for Fairfield
Is tap water safe in Fairfield?+
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?+
Utility-reported hardness is unavailable in this index. Regional samples do not establish tap-water hardness. Ask your provider or test your tap.
Do I need a water softener?+
Confirm hardness at your tap and consider actual scale or spotting before choosing treatment. Regional environmental values cannot determine whether you need a softener. A softener addresses hardness, not every contaminant.