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Tap water quality report

Washington

EPA monitoring tested this supplier for 109 contaminants and detected 17. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

109
contaminants tested
17
detected
14,793
people served
2
health-based violations
Illinois rankingsLead in IllinoisPFAS in Illinois
Water source
Ground water
Ownership
Local government
Counties served
Tazewell

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

2
health-based violations
7
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 1992-12-07
TT Health-based Resolved 1992-12-07
Other Monitoring Resolved 2025-07-01
Other Monitoring Resolved 2025-07-01
MR Monitoring Resolved 2021-12-30
MR Monitoring Resolved 2021-12-30
MR Monitoring Archived 1977-06-30 → 1981-06-29

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
1600 µg/L 123%
of the EPA limit, in the worst sample — 1300 µg/L
 90/90 SYR4 2012–2018
Chloroform
27.61 µg/L
No EPA limit set
 28/28 SYR4 2012–2019
TTHM
35.44 µg/L 44%
of the EPA limit 80 µg/L
 28/28 SYR4 2012–2019
Nitrate
170 µg/L 1.7%
of the EPA limit 10000 µg/L
 26/40 SYR4 2012–2019
Bromodichloromethane
6.66 µg/L
No EPA limit set
 24/28 SYR4 2012–2019
Dibromochloromethane
1.922 µg/L
No EPA limit set
 24/28 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
25.8 µg/L 43%
of the EPA limit 60 µg/L
 24/28 SYR4 2012–2019
Trichloroacetic Acid
14.4 µg/L
No EPA limit set
 24/28 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 22/22 LCR 2024
Dichloroacetic Acid
10.3 µg/L
No EPA limit set
 17/28 SYR4 2012–2019
Lead
10 µg/L 67%
of the EPA limit 15 µg/L
 11/90 SYR4 2012–2018
Barium
370 µg/L 19%
of the EPA limit 2000 µg/L
 8/8 SYR4 2014–2018
Fluoride
1080 µg/L 27%
of the EPA limit 4000 µg/L
 8/8 SYR4 2014–2018
Combined Radium (-226 And -228)
2.21 pCi/L 44%
of the EPA limit 5 pCi/L
 5/5 SYR4 2014–2017
Arsenic
3 µg/L 30%
of the EPA limit 10 µg/L
 4/8 SYR4 2014–2018
Nitrate-Nitrite
110 µg/L 1.1%
of the EPA limit 10000 µg/L
 3/10 SYR4 2012–2018
Monobromoacetic Acid
1.07 µg/L
No EPA limit set
 1/28 SYR4 2012–2019
92 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
RITTENHOUSE, BRIAN
Email
brittenhouse@ci.washington.il.us

Frequently asked questions about Washington

Is Washington tap water safe to drink?

EPA monitoring detected 17 contaminants in Washington's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Washington's water?

EPA monitoring detected Copper, Chloroform, TTHM, Nitrate, Bromodichloromethane, and others. The full list with the level and data source for each is above.

How many people does Washington serve?

Washington reports serving 14,793 people in Illinois, per its EPA record.

Has Washington had any water quality violations?

The EPA has 7 violations on file for Washington, of which 2 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.