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Tap water quality report

Garwood Water Coop

EPA monitoring tested this supplier for 38 contaminants and detected 6. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

38
contaminants tested
6
detected
398
people served
17
health-based violations
Idaho rankingsLead in IdahoPFAS in Idaho
Water source
Ground water
Ownership
Private
Counties served
Kootenai

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.

17
health-based violations
29
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2012-10-01 → 2012-10-31
MCL Health-based Archived 2012-10-01 → 2012-10-31
MCL Health-based Archived 2012-10-01 → 2012-10-31
MCL Health-based Archived 2011-10-01 → 2011-10-31
MCL Health-based Archived 2011-10-01 → 2011-10-31
MCL Health-based Archived 2011-10-01 → 2011-10-31
MCL Health-based Archived 2011-09-01 → 2011-09-30
MCL Health-based Archived 2011-09-01 → 2011-09-30
MCL Health-based Archived 2011-09-01 → 2011-09-30
MCL Health-based Archived 2010-04-01 → 2010-04-30

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 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
1070 µg/L 11%
of the EPA limit 10000 µg/L
 16/20 SYR4 2012–2019
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 8/8 LCR 2025
Barium
26 µg/L 1.3%
of the EPA limit 2000 µg/L
 1/1 SYR4 2019
Combined Radium (-226 And -228)
0.1400 pCi/L 2.8%
of the EPA limit 5 pCi/L
 1/1 SYR4 2013
Gross Alpha, Excl. Radon And U
1.04 pCi/L 6.9%
of the EPA limit 15 pCi/L
 1/1 SYR4 2016
Nitrate-Nitrite
886 µg/L 8.9%
of the EPA limit 10000 µg/L
 1/1 SYR4 2019
32 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalArsenicBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbon TetrachlorideChromiumCombined UraniumDichloromethaneEthylbenzeneFluorideMercuryNitriteSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
WITHERWAX, CORKY J
Phone
800-947-4451
Email
[email protected]

Frequently asked questions about Garwood Water Coop

Is Garwood Water Coop tap water safe to drink?

EPA monitoring detected 6 contaminants in Garwood Water Coop'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 Garwood Water Coop's water?

EPA monitoring detected Nitrate, Lead, Barium, Combined Radium (-226 And -228), Gross Alpha, Excl. Radon And U, and others. The full list with the level and data source for each is above.

How many people does Garwood Water Coop serve?

Garwood Water Coop reports serving 398 people in Idaho, per its EPA record.

Has Garwood Water Coop had any water quality violations?

The EPA has 29 violations on file for Garwood Water Coop, of which 17 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.