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Tap water quality report

Nokomis

EPA monitoring tested this supplier for 78 contaminants and detected 26. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

78
contaminants tested
26
detected
2,370
people served
30
health-based violations
Illinois rankingsLead in IllinoisPFAS in Illinois
Water source
Ground water
Ownership
Local government
Counties served
Montgomery

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.

30
health-based violations
37
violations on file
2
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 1996-10-01 → 1996-12-31
MCL Health-based Resolved 1996-10-01 → 1996-12-31
MCL Health-based Resolved 1996-10-01 → 1996-12-31
MCL Health-based Resolved 1996-07-01 → 1996-09-30
MCL Health-based Resolved 1996-07-01 → 1996-09-30
MCL Health-based Resolved 1996-07-01 → 1996-09-30
MCL Health-based Resolved 1996-04-01 → 1996-06-30
MCL Health-based Resolved 1996-04-01 → 1996-06-30
MCL Health-based Resolved 1996-04-01 → 1996-06-30
MCL Health-based Resolved 1996-04-01 → 1996-06-30

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
360 µg/L 28%
of the EPA limit 1300 µg/L
 30/30 SYR4 2013–2019
cis-1,2-Dichloroethylene
36 µg/L 51%
of the EPA limit 70 µg/L
 26/75 SYR4 2012–2019
Lead
0.0018 mg/L 12%
of the EPA limit 0.0150 mg/L
 17/17 LCR 2026
Nitrate
1400 µg/L 14%
of the EPA limit 10000 µg/L
 14/16 SYR4 2012–2019
Vinyl Chloride
26 µg/L 1300%
of the EPA limit, in the worst sample — 2 µg/L
 13/75 SYR4 2012–2019
trans-1,2-Dichloroethylene
21 µg/L 21%
of the EPA limit 100 µg/L
 13/75 SYR4 2012–2019
Benzene
5.6 µg/L 112%
of the EPA limit, in the worst sample — 5 µg/L
 9/75 SYR4 2012–2019
Bromodichloromethane
17.3 µg/L
No EPA limit set
 9/9 SYR4 2014–2019
Bromoform
9.25 µg/L
No EPA limit set
 9/9 SYR4 2014–2019
Chloroform
12.48 µg/L
No EPA limit set
 9/9 SYR4 2014–2019
Dibromochloromethane
19 µg/L
No EPA limit set
 9/9 SYR4 2014–2019
TTHM
53 µg/L 66%
of the EPA limit 80 µg/L
 9/9 SYR4 2014–2019
Total Haloacetic Acids (HAA5)
10.13 µg/L 17%
of the EPA limit 60 µg/L
 8/9 SYR4 2014–2019
Dibromoacetic Acid
5.04 µg/L
No EPA limit set
 7/9 SYR4 2014–2019
Lead
3.8 µg/L 25%
of the EPA limit 15 µg/L
 6/30 SYR4 2013–2019
Trichloroacetic Acid
3.03 µg/L
No EPA limit set
 5/9 SYR4 2014–2019
Barium
68 µg/L 3.4%
of the EPA limit 2000 µg/L
 3/3 SYR4 2012–2018
Fluoride
1050 µg/L 26%
of the EPA limit 4000 µg/L
 3/3 SYR4 2012–2018
Dichloroacetic Acid
3.27 µg/L
No EPA limit set
 2/9 SYR4 2014–2019
Trichloroethylene
2.2 µg/L 44%
of the EPA limit 5 µg/L
 2/75 SYR4 2012–2019
Arsenic
2.3 µg/L 23%
of the EPA limit 10 µg/L
 1/3 SYR4 2012–2018
Chromium
6.1 µg/L 6.1%
of the EPA limit 100 µg/L
 1/3 SYR4 2012–2018
Combined Radium (-226 And -228)
0.9370 pCi/L 19%
of the EPA limit 5 pCi/L
 1/1 SYR4 2015
Monobromoacetic Acid
1.17 µg/L
No EPA limit set
 1/9 SYR4 2014–2019
Tetrachloroethylene
1.3 µg/L 26%
of the EPA limit 5 µg/L
 1/75 SYR4 2012–2019
Toluene
1.6 µg/L 0.2%
of the EPA limit 1000 µg/L
 1/75 SYR4 2012–2019
52 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonochloroacetic AcidNitrate-NitriteNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneThallium, TotalTotal Polychlorinated Biphenyls (PCB)ToxapheneXylenes, TotalO-DichlorobenzeneP-Dichlorobenzene

Utility contact

Contact
ARKEBAUR, SCOTT
Phone
217-563-2514
Email
sarkebauer@cityofnokomis.com

Frequently asked questions about Nokomis

Is Nokomis tap water safe to drink?

EPA monitoring detected 26 contaminants in Nokomis'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 Nokomis's water?

EPA monitoring detected Copper, cis-1,2-Dichloroethylene, Lead, Nitrate, Vinyl Chloride, and others. The full list with the level and data source for each is above.

How many people does Nokomis serve?

Nokomis reports serving 2,370 people in Illinois, per its EPA record.

Has Nokomis had any water quality violations?

The EPA has 37 violations on file for Nokomis, of which 30 are health-based (a contaminant limit or required treatment was breached) and 2 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.