Tap Water Quality Report
Tap water quality in SPRINGFIELD, Illinois
Tap water in SPRINGFIELD, Illinois receives a grade of D (64/100) from TapWaterSafety.org. It's served by SPRINGFIELD. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline; Arsenic detected. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in SPRINGFIELD's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving SPRINGFIELD.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 26.3 ppb, 438x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 41.2 ppb, 274x above the EWG health guideline of 0.15 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 20.0 ppb, 200x above the EWG health guideline of 0.1 ppb.
Arsenic detected
Moderate concernArsenic detected at 0.315 ppb.
EPA compliance record
Official U.S. EPA records for SPRINGFIELD (system ID IL1671200) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Synthetic Organic Chemicals | Missed testing or reporting | 07/01/2025 | Open |
| Stage 2 Disinfectants and Disinfection Byproducts Rule | Missed testing or reporting | 07/01/2024 | Open |
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Recommended filters for SPRINGFIELD
Filters matched to the specific contaminants in SPRINGFIELD's water supply.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Reverse osmosis certified for arsenic (NSF/ANSI 58)
$429-$599Reverse osmosis certified under NSF/ANSI 58 for arsenic is the most reliable home option.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in SPRINGFIELD's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Haloacetic acids (HAA9) Disinfection byproduct |
26.3 ppb | 0.06 | — | — | — | — | — | 438× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
41.2 ppb | 0.15 | 80.0 | 100 | — | — | — | 274× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
20.0 ppb | 0.1 | 60.0 | 60 | — | — | — | 200× over |
| Bromodichloromethane Disinfection byproduct |
7.54 ppb | 0.06 | — | — | — | — | — | 126× over |
| Arsenic Heavy metal |
0.315 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 79× over |
| Chloroform Disinfection byproduct |
31.3 ppb | 0.4 | — | — | — | — | — | 78× over |
| Dichloroacetic acid Disinfection byproduct |
15.0 ppb | 0.2 | — | — | — | — | — | 75× over |
| Chromium (hexavalent) Heavy metal |
1.4 ppb | 0.02 | — | — | — | — | — | 70× over |
| Trichloroacetic acid Disinfection byproduct |
4.5 ppb | 0.1 | — | — | — | — | — | 45× over |
| Dibromochloromethane Disinfection byproduct |
2.28 ppb | 0.1 | — | — | — | — | — | 23× over |
| Radium, combined (-226 and -228) Radiological |
1.01 pCi/L | 0.05 | 5.0 | — | — | — | — | 20× over |
| Dibromoacetic acid Disinfection byproduct |
0.205 ppb | 0.03 | — | — | — | — | — | 6.8× over |
| Nitrate Inorganic |
0.353 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 2.5× over |
| Nitrate and nitrite Inorganic |
0.325 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 2.3× over |
| Atrazine Pesticide/Herbicide |
0.04 ppb | 0.1 | 3.0 | 0.1 | 100 | 0.15 | — | Below guideline |
| Vanadium Other |
3.83 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
17.0 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Molybdenum Other |
0.822 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
12.9 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.286 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
0.52 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
1.5 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| 4-Androstene-3,17-dione Other |
0.125 ppt | — | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.618 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from SPRINGFIELD.
General Contact
Treatment Plant
ZIP codes served
SPRINGFIELD's public water systems serve the following ZIP codes: