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Tap water quality report

Dahl Subd

EPA monitoring tested this supplier for 67 contaminants and detected 9. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

67
contaminants tested
9
detected
51
people served
0
health-based violations
Idaho rankingsLead in IdahoPFAS in Idaho
Water source
Ground water
Ownership
Private
Counties served
Canyon

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.

0
health-based violations
37
violations on file
6
still open
ViolationTypeStatusPeriod
RPT Monitoring Unaddressed 2025-07-02
RPT Monitoring Unaddressed 2025-07-02
MON Monitoring Resolved 2025-07-01 → 2025-07-31
MON Monitoring Resolved 2025-07-01 → 2025-07-31
MON Monitoring Resolved 2025-07-01 → 2025-07-31
MON Monitoring Resolved 2025-07-01 → 2025-07-31
MR Monitoring Resolved 2024-10-01
MR Monitoring Resolved 2024-10-01
MR Monitoring Resolved 2024-10-01
MR Monitoring Unaddressed 2021-12-30

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
Nitrate
1160 µg/L 12%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 10/10 LCR 2027
Arsenic
4.3 µg/L 43%
of the EPA limit 10 µg/L
 1/1 SYR4 2019
Chromium
5 µg/L 5%
of the EPA limit 100 µg/L
 1/1 SYR4 2019
Combined Radium (-226 And -228)
0.4300 pCi/L 8.6%
of the EPA limit 5 pCi/L
 1/2 SYR4 2013–2019
Combined Uranium
2.6 µg/L 8.7%
of the EPA limit 30 µg/L
 1/1 SYR4 2013
Fluoride
200 µg/L 5%
of the EPA limit 4000 µg/L
 1/1 SYR4 2019
Gross Alpha, Excl. Radon And U
1.86 pCi/L 12%
of the EPA limit 15 pCi/L
 1/1 SYR4 2013
Nitrate-Nitrite
1100 µg/L 11%
of the EPA limit 10000 µg/L
 1/1 SYR4 2019
58 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-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
CORDER, ERNIE
Phone
208-412-6928
Email
Ecorder4@gmail.com

Frequently asked questions about Dahl Subd

Is Dahl Subd tap water safe to drink?

EPA monitoring detected 9 contaminants in Dahl 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 Dahl Subd's water?

EPA monitoring detected Nitrate, Lead, Arsenic, Chromium, Combined Radium (-226 And -228), and others. The full list with the level and data source for each is above.

How many people does Dahl Subd serve?

Dahl Subd reports serving 51 people in Idaho, per its EPA record.

Has Dahl Subd had any water quality violations?

The EPA has 37 violations on file for Dahl Subd, of which 0 are health-based (a contaminant limit or required treatment was breached) and 6 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.