EJ Water Co-Op (IL) Water Quality

EJ Water Co-Op is a large public water system in EPA region 5 that provides tap water for the 61914, 61928, 62011, 62075, 62076, 62083, 62401, 62413, 62414, 62419 - 62422, 62425, 62426, 62431, 62432, 62436, 62440, 62444 - 62450, 62454, 62461 - 62463, 62466 - 62469, 62475, 62476, 62480, 62481, 62534, 62550, 62555, 62565, 62571, 62815, 62838, 62868, 62880 zip codes. It has 13 facilities where the water supply was tested for 78 chemical contaminants that impact tap water quality and human health.

The maximum reported level of HAA5 (five regulated haloacetic acids) was 347.936 µg/L. Some (1 of 8 or 13%) of the latest water samples showed levels of HAA5 (five regulated haloacetic acids) that were at or above unsafe concentration levels. The maximum reported level of Manganese was 4.23 µg/L. There were 2 contamintants found in the EJ Water Co-Op water supply at levels that were above the minimum reporting level. 1 of the contaminants were above the reference level, which means they may pose a risk to human health.

Contaminants

1,1-dichloroethane (8)

1,2,3-trichloropropane (8)

1,3-butadiene (8)

1,4-dioxane (8)

1-butanol (6)

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (16)

1H,1H,2H,2H-perfluorodecane sulfonic acid (16)

1H,1H,2H,2H-perfluorohexane sulfonic acid (16)

1H,1H,2H,2H-perfluorooctane sulfonic acid (16)

2,4-dinitrotoluene (1)

2,6-dinitrotoluene (1)

2-methoxyethanol (6)

2-propen-1-ol (Allyl Alcohol) (6)

4,4'-dichloro dichlorophenyl ethylene (DDE) (1)

4,8-dioxa-3H-perfluorononanoic acid (16)

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (16)

alpha-hexachlorocyclohexane (6)

anatoxin-a (8)

bromochloromethane (Halon 1011) (8)

bromomethane (8)

Butylated Hydroxyanisole (6)

chlorate (12)

chlorodifluoromethane (HCFC-22) (8)

chloromethane (8)

chlorpyrifos (6)

chromium (12)

chromium-6 (11)

cobalt (12)

cylindrospermopsin (8)

dimethipin (6)

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (1)

ethoprop (6)

Germanium (6)

HAA5 (five regulated haloacetic acids) (8)

HAA6Br (six brominated haloacetic acids) (8)

HAA9 (nine haloacetic acids) (8)

hexafluoropropylene oxide dimer acid (GenX) (16)

lithium (16)

Manganese (6)

methyl-tertiary-butyl-ether (MTBE) (1)

molinate (1)

molybdenum (12)

N-ethyl perfluorooctanesulfonamidoacetic acid (16)

N-methyl perfluorooctanesulfonamidoacetic acid (16)

nitrobenzene (1)

nonafluoro-3,6-dioxaheptanoic acid (16)

o-toluidine (6)

oxyfluorfen (6)

perchlorate (1)

perfluoro(2-ethoxyethane)sulfonic acid (16)

perfluoro-3-methoxypropanoic acid (16)

perfluoro-4-methoxybutanoic acid (16)

perfluorobutanesulfonic acid (24)

perfluorobutanoic acid (16)

perfluorodecanoic acid (16)

perfluorododecanoic acid (16)

perfluoroheptanesulfonic acid (16)

perfluoroheptanoic acid (24)

perfluorohexanesulfonic acid (24)

perfluorohexanoic acid (16)

perfluorononanoic acid (24)

perfluorooctanesulfonic acid (24)

perfluorooctanoic acid (24)

perfluoropentanesulfonic acid (16)

perfluoropentanoic acid (16)

perfluorotetradecanoic acid (16)

perfluorotridecanoic acid (16)

perfluoroundecanoic acid (16)

profenofos (6)

quinoline (6)

s-ethyl-dipropylthiocarbamate (EPTC) (1)

strontium (12)

tebuconazole (6)

terbacil (1)

total microcystins (8)

Total Permethrin (6)

tribufos (6)

vanadium (12)

Sampling Facilities

EJ Hardinville WC Connection #1
Ground Water (GW)

EJ Hardinville WC Connection #1Entry Point to the Distribution System (EP)

EJ S. Lawrence WC Master Meter
Ground Water (GW)

EJ S. Lawrence WC Master MeterEntry Point to the Distribution System (EP)

EJ North Effingham Master Meter
Surface Water (SW)

EJ North Effingham Master MeterEntry Point to the Distribution System (EP)

EJ Moultrie Co RWD Master Meter
Ground Water (GW)

EJ Moultrie Co RWD Master MeterEntry Point to the Distribution System (EP)

Gila Ground Water WTP
Ground Water (GW)

Gila WTPEntry Point to the Distribution System (EP)

Delbert Mundt Surface WTP
Surface Water (SW)

Delbert Mundt WTPEntry Point to the Distribution System (EP)

Groundwater Treatment Plant
Ground Water (GW)

Finished WaterEntry Point to the Distribution System (EP)

Surface Water Treatment Plant
Surface Water (SW)

Finished WaterEntry Point to the Distribution System (EP)

Distribution System
Multiple Sources (MX)

318 Adams Ave. (Nokomis)Distribution System (DS)
St. Peter Vault (704 W. 3rd)Distribution System (DS)

Distribution System
Surface Water (SW)

1952 Dieterich BlacktopMaximum Residence Time (MR)

WTP (on W. Side of Embarrass)
Surface Water (SW)

Jasper Co.Entry Point to the Distribution System (EP)

Surface Water Plant
Surface Water (SW)

EPTDS from Surface Water PlantEntry Point to the Distribution System (EP)

WELL #3 IS ABOUT 850 FT E OF WELL #1
Ground Water (GW)

WELL #3 IS ABOUT 850 FT E OF WELL #1Entry Point to the Distribution System (EP)

FAQ

Is EJ Water Co-Op tap water safe to drink?

When was EJ Water Co-Op last tested for water contamination?

The latest water samples were taken on April 7th, 2025.