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Tap water quality report

Algoma Addition Subd

EPA monitoring tested this supplier for 37 contaminants and detected 5. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

37
contaminants tested
5
detected
68
people served
8
health-based violations
Idaho rankingsLead in IdahoPFAS in Idaho
Water source
Ground water
Ownership
Private
Counties served
Bonner

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.

8
health-based violations
112
violations on file
1
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2014-06-01 → 2014-06-30
MCL Health-based Archived 2013-08-01 → 2013-08-31
MCL Health-based Archived 2013-08-01 → 2013-08-31
MCL Health-based Archived 2008-09-01 → 2008-09-30
MCL Health-based Archived 1996-12-01 → 1996-12-31
MCL Health-based Archived 1996-12-01 → 1996-12-31
MCL Health-based Resolved 1994-06-01 → 1994-06-30
MCL Health-based Resolved 1994-06-01 → 1994-06-30
Other Monitoring Resolved 2026-01-01
Other Monitoring Resolved 2026-01-01

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
590 µg/L 5.9%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Lead
0.0030 mg/L 20%
of the EPA limit 0.0150 mg/L
 11/11 LCR 2025
Barium
20 µg/L 1%
of the EPA limit 2000 µg/L
 1/1 SYR4 2019
Fluoride
120 µg/L 3%
of the EPA limit 4000 µg/L
 1/1 SYR4 2019
Nitrate-Nitrite
500 µg/L 5%
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 Radium (-226 And -228)Combined UraniumDichloromethaneEthylbenzeneMercuryNitriteSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
HANSEN, ROBERT F
Phone
208-265-4270
Email
wsmibob@aol.com

Frequently asked questions about Algoma Addition Subd

Is Algoma Addition Subd tap water safe to drink?

EPA monitoring detected 5 contaminants in Algoma Addition Subd'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 Algoma Addition Subd's water?

EPA monitoring detected Nitrate, Lead, Barium, Fluoride, Nitrate-Nitrite. The full list with the level and data source for each is above.

How many people does Algoma Addition Subd serve?

Algoma Addition Subd reports serving 68 people in Idaho, per its EPA record.

Has Algoma Addition Subd had any water quality violations?

The EPA has 112 violations on file for Algoma Addition Subd, of which 8 are health-based (a contaminant limit or required treatment was breached) and 1 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.