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Tap water quality report

Greenferry Water & Sewer District

EPA monitoring tested this supplier for 41 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

41
contaminants tested
8
detected
978
people served
6
health-based violations
Idaho rankingsLead in IdahoPFAS in Idaho
Water source
Ground water
Ownership
Local government
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.

6
health-based violations
14
violations on file
2
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 1999-10-01 → 1999-10-31
MCL Health-based Archived 1997-07-01 → 1997-07-31
MCL Health-based Archived 1997-06-01 → 1997-06-30
MCL Health-based Archived 1996-09-01 → 1996-09-30
MCL Health-based Archived 1996-02-01 → 1996-02-29
MCL Health-based Archived 1995-10-01 → 1995-10-31
MR Monitoring Archived 2025-10-01 → 2025-12-31
MR Monitoring Archived 2025-10-01 → 2025-12-31
RPT Monitoring Unaddressed 2025-07-02
RPT Monitoring Unaddressed 2025-07-02

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
876 µg/L 8.8%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 8/8 LCR 2025
TTHM
3.42 µg/L 4.3%
of the EPA limit 80 µg/L
worst single sample: 3.48 µg/L
6/8 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
5.464 µg/L 9.1%
of the EPA limit 60 µg/L
worst single sample: 5.94 µg/L
3/9 SYR4 2013–2019
Barium
28 µg/L 1.4%
of the EPA limit 2000 µg/L
 1/1 SYR4 2019
Combined Radium (-226 And -228)
0.0500 pCi/L 1%
of the EPA limit 5 pCi/L
 1/1 SYR4 2013
Gross Alpha, Excl. Radon And U
0.2740 pCi/L 1.8%
of the EPA limit 15 pCi/L
 1/1 SYR4 2016
Nitrate-Nitrite
876 µg/L 8.8%
of the EPA limit 10000 µg/L
 1/1 SYR4 2019
33 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalArsenicAsbestosBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbon TetrachlorideChromiumCombined UraniumDichloromethaneEthylbenzeneFluorideMercuryNitriteSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
GRACE, REX
Phone
208-773-5510
Email
[email protected]

Frequently asked questions about Greenferry Water & Sewer District

Is Greenferry Water & Sewer District tap water safe to drink?

EPA monitoring detected 8 contaminants in Greenferry Water & Sewer District'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 Greenferry Water & Sewer District's water?

EPA monitoring detected Nitrate, Lead, TTHM, Total Haloacetic Acids (HAA5), Barium, and others. The full list with the level and data source for each is above.

How many people does Greenferry Water & Sewer District serve?

Greenferry Water & Sewer District reports serving 978 people in Idaho, per its EPA record.

Has Greenferry Water & Sewer District had any water quality violations?

The EPA has 14 violations on file for Greenferry Water & Sewer District, of which 6 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.