Tap WaterIndex

← Idaho

Tap water quality report

Castle Mountain Creeks Owners Assn

EPA monitoring tested this supplier for 71 contaminants and detected 6. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

71
contaminants tested
6
detected
250
people served
110
health-based violations
Idaho rankingsLead in IdahoPFAS in Idaho
Water source
Surface water
Ownership
Private
Counties served
Boise

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.

110
health-based violations
239
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2026-01-01 → 2026-03-31
MCL Health-based Archived 2025-10-01 → 2025-12-31
MCL Health-based Archived 2025-10-01 → 2025-12-31
MCL Health-based Archived 2025-10-01 → 2025-12-31
MCL Health-based Resolved 2025-05-01 → 2025-05-31
MCL Health-based Resolved 2025-05-01 → 2025-05-31
MCL Health-based Resolved 2025-05-01 → 2025-05-31
MCL Health-based Resolved 2025-05-01 → 2025-05-31
MCL Health-based Resolved 2025-05-01 → 2025-05-31
MCL Health-based Resolved 2024-07-01 → 2024-09-30

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
Total Haloacetic Acids (HAA5)
106 µg/L 177%
of the EPA limit, at the 95th percentile of samples — 60 µg/L
worst single sample: 140 µg/L
32/32 SYR4 2012–2019
TTHM
119.4 µg/L 149%
of the EPA limit, at the 95th percentile of samples — 80 µg/L
worst single sample: 175 µg/L
27/32 SYR4 2012–2019
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 24/24 LCR 2025
Nitrate
300 µg/L 3%
of the EPA limit 10000 µg/L
 2/20 SYR4 2012–2019
Barium
100 µg/L 5%
of the EPA limit 2000 µg/L
 1/2 SYR4 2016–2018
Nitrate-Nitrite
300 µg/L 3%
of the EPA limit 10000 µg/L
 1/1 SYR4 2018
65 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, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)Combined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneFluorideGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
GARRITY, ANNETTE
Phone
208-462-3592
Email
[email protected]

Frequently asked questions about Castle Mountain Creeks Owners Assn

Is Castle Mountain Creeks Owners Assn tap water safe to drink?

EPA monitoring detected 6 contaminants in Castle Mountain Creeks Owners Assn'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 Castle Mountain Creeks Owners Assn's water?

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

How many people does Castle Mountain Creeks Owners Assn serve?

Castle Mountain Creeks Owners Assn reports serving 250 people in Idaho, per its EPA record.

Has Castle Mountain Creeks Owners Assn had any water quality violations?

The EPA has 239 violations on file for Castle Mountain Creeks Owners Assn, of which 110 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.