Castle Mountain Creeks Owners Association water quality
2 contaminants above a federal limit. hardness not in the latest CCR.
ID4080007. Data through 2026-08-14. DEQ record.
What's in it
Haloacetic Acids (HAA5)
Above limitBrondell Circle RC100 Reverse Osmosis System is certified to reduce it.
Total Trihalomethanes
Above limitBrondell Circle RC100 Reverse Osmosis System is certified to reduce it.
11 other contaminants tested, not detected or well below the limit
Arsenic ND Copper 0.08ppm Fluoride ND Gross Alpha ND HFPO-DA (GenX) ND Lead 1.0ppb Nitrate (as N) ND PFHxS ND PFNA ND Radium 226 + 228 ND Uranium ND
Filters that match
Brondell Circle RC100 Reverse Osmosis System
under sink ro · diy
- Haloacetic Acids (HAA5)removes it, NSF or WQA certified
- Total Trihalomethanesremoves it, NSF or WQA certified
Detections ranked by share of the limitevery Tier 1 detection, highest first
Bar length is the highest result in the last 36 months as a share of the federal limit (MCL, or action level for lead and copper). The dark tick marks the limit. Gross alpha is compared after subtracting uranium, as DEQ does for compliance.
Full contaminants reporthighest, latest, limit, trend, last sample
| Contaminant | Highest, 36 mo | Federal limit | Share of limit | Status | Trend | Last sample |
|---|---|---|---|---|---|---|
| Arsenic | ND | 10.0ppb MCL | Not detected | 2025-12-04 | ||
| Copper 90th percentile at home taps note | 0.08ppm latest 0.03ppm | 1.30ppm AL | Detected | 2025-12-31 | ||
| Fluoride | ND | 4.00ppm MCL | Not detected | 2025-12-04 | ||
| Gross Alpha | ND | 15.0pCi/L MCL | Not detected | 2025-09-25 | ||
| Haloacetic Acids (HAA5) | 266.0ppb latest ND | 60.0ppb MCL | Above limit | 2026-08-14 | ||
| HFPO-DA (GenX) | ND | 10.0ppt MCL | Not detected | 2026-08-14 | ||
| Lead 90th percentile at home taps note | 1.0ppb | 15.0ppb AL | Detected | 2025-12-31 | ||
| Nitrate (as N) | 0.30ppm latest ND | 10.00ppm MCL | Detected | 2026-07-22 | ||
| PFHxS | ND | 10.0ppt MCL | Not detected | 2026-08-14 | ||
| PFNA | ND | 10.0ppt MCL | Not detected | 2024-10-25 | ||
| Radium 226 + 228 | ND | 5.00pCi/L MCL | Not detected | 2025-12-04 | ||
| Total Trihalomethanes | 140.0ppb latest ND | 80.0ppb MCL | Above limit | 2026-08-14 | ||
| Uranium | ND | 30.0ppb MCL | Not detected | 2025-09-25 |
- Copper: 90th percentile of samples taken at customer taps. Results depend on the home's plumbing.
- Lead: 90th percentile of samples taken at customer taps. Results depend on the home's plumbing.
ppb = parts per billion (µg/L), ppm = parts per million (mg/L), ppt = parts per trillion. ND = not detected above the lab's reporting limit. MCL = federal maximum contaminant level; AL = action level for lead and copper (90th percentile of home taps); aesthetic = secondary standard for taste, odor or staining, not health. Bars show the highest result in 36 months as a share of the limit.
14 other regulated contaminants tested
| Contaminant | 36 mo max | Limit | Status | Last sample |
|---|---|---|---|---|
| Antimony | ND | 6.0ppb | Not detected | 2025-12-04 |
| Atrazine | ND | 3.0ppb | Not detected | 2025-12-04 |
| Barium | 0.09ppm | 2.00ppm | Detected | 2025-12-04 |
| Benzene | ND | 5.0ppb | Not detected | 2026-07-22 |
| Beryllium | ND | 4.0ppb | Not detected | 2025-12-04 |
| Cadmium | ND | 5.0ppb | Not detected | 2025-12-04 |
| Chromium (total) | ND | 0.10ppm | Not detected | 2025-12-04 |
| 1,2-Dibromo-3-chloropropane | ND | 0.2ppb | Not detected | 2025-12-04 |
| Mercury (inorganic) | ND | 2.0ppb | Not detected | 2025-12-04 |
| Tetrachloroethylene | ND | 5.0ppb | Not detected | 2026-07-22 |
| Selenium | ND | 50.0ppb | Not detected | 2025-12-04 |
| Sodium | 18.90ppm | none | Detected | 2026-07-22 |
| Trichloroethylene | ND | 5.0ppb | Not detected | 2026-07-22 |
| Thallium | ND | 2.0ppb | Not detected | 2025-12-04 |
Hardness
Hardness is not reported in the latest CCR. Hardness not reported for this system; softener sizing uses a regional default of 11.7 gpg until a CCR value is reviewed.
Track record20 violations on record, 9 health-based
✓ no violation recorded n monitoring or reporting only n includes a health-based violation ? outside the loaded record
Health-based violations
| Period | What happened | Contaminant | Rule | Status |
|---|---|---|---|---|
| 2026-01-01 to 2026-03-31 | Maximum contaminant level exceeded (Single sample MCL exceeded) | Haloacetic Acids (HAA5) | Stage 2 Disinfectants and Disinfection Byproducts Rule | resolved |
| 2025-10-01 to 2025-12-31 | Maximum contaminant level exceeded (Single sample MCL exceeded) | Haloacetic Acids (HAA5) | Stage 2 Disinfectants and Disinfection Byproducts Rule | resolved |
| 2025-05-01 to 2025-05-31 | Maximum contaminant level exceeded | n/a | Revised Total Coliform Rule | resolved 2025-06-30 |
| 2024-07-01 to 2024-09-30 | Maximum contaminant level exceeded (Single sample MCL exceeded) | Haloacetic Acids (HAA5) | Stage 2 Disinfectants and Disinfection Byproducts Rule | resolved 2025-06-27 |
| 2024-04-01 to 2024-06-30 | Maximum contaminant level exceeded (Single sample MCL exceeded) | Haloacetic Acids (HAA5) | Stage 2 Disinfectants and Disinfection Byproducts Rule | resolved 2025-06-27 |
| 2018-01-01 to 2018-03-31 | Maximum contaminant level exceeded (Single sample MCL exceeded) | Haloacetic Acids (HAA5) | Stage 2 Disinfectants and Disinfection Byproducts Rule | resolved 2020-02-26 |
| 2017-05-01 to 2017-05-31 | Treatment technique not met (Monthly turbidity exceedance) | n/a | Long Term 1 Enhanced Surface Water Treatment Rule | resolved 2017-12-12 |
| 2016-10-01 | Treatment technique not met (Public education (LCR)) | n/a | Lead and Copper Rule | resolved 2018-01-18 |
| 2016-09-30 | Treatment technique not met (Optimal corrosion control treatment study or recommendation (LCR)) | n/a | Lead and Copper Rule | resolved 2018-02-22 |
Monitoring and reporting violations (11)
A required sample or report was late or missing. These do not mean a contaminant was found, but a system that skips monitoring has gaps in its record.
| Year | Rule | Count | Detail |
|---|---|---|---|
| 2020 | Surface Water Treatment Rule | 1 | Monitoring of treatment (SWTR) |
| 2020 | Long Term 1 Enhanced Surface Water Treatment Rule | 1 | Operation under MCL |
| 2019 | Public Notification Rule | 1 | Public notice, failure to notify |
| 2018 | Surface Water Treatment Rule | 1 | Monitoring of treatment (SWTR) |
| 2018 | Stage 1 Disinfectants and Disinfection Byproducts Rule | 1 | Monitoring and reporting (DBP) · Chlorine (residual) |
| 2017 | Surface Water Treatment Rule | 1 | Monitoring of treatment (SWTR) |
| 2017 | Long Term 2 Enhanced Surface Water Treatment Rule | 2 | · E. coli |
| 2017 | Long Term 1 Enhanced Surface Water Treatment Rule | 1 | Operation under MCL |
| 2016 | Public Notification Rule | 2 | Public notice rule linked to violation |
Lead and copper at the tap90th percentile of sampled homes against the action level
90th percentile of samples taken at customer taps. Results depend on the home's plumbing. Results are from sampled homes in this system, not from your tap. Home plumbing can add lead and copper. First-draw samples run higher than flushed ones.
90th percentile of samples taken at customer taps. Results depend on the home's plumbing. Results are from sampled homes in this system, not from your tap. Home plumbing can add lead and copper. First-draw samples run higher than flushed ones.
Where the water comes from1 active wells
1 active well, 1 surface water intake, and 2 treatment points on record (SDWIS counts each chlorination or filtration point as a treatment plant).
WELL #3: Susceptibility: ioc moderate, voc moderate, soc high (auto), microbial moderate.
Source water assessment susceptibility: final map[IOC:Moderate Microbials:Moderate SOC:Auto High VOC:Moderate]; hydrologic sensitivity H; pci land use map[IOC:L Microbials:L SOC:L VOC:L]; system construction L;
Source names (1)
WELL #3
Every match, by categorytop three per category
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Drinking water
Under sink, pitcher, or faucet. Treats the water you drink and cook with.
Brondell Circle RC100 Reverse Osmosis System
Certified for total trihalomethanes, haloacetic acids, and barium (NSF/ANSI 53, NSF/ANSI 58).
Plumber recommended if you are not comfortable with a drain saddle and a tank. Not a whole-house solution.
Aquasana OptimH2O Reverse Osmosis + Claryum
Certified for total trihalomethanes, haloacetic acids, and nitrate (NSF/ANSI 53, NSF/ANSI 58).
Plumber recommended if you are not comfortable with a drain saddle and a tank. Not a whole-house solution.
Clearly Filtered Water Pitcher
Certified for total trihalomethanes, haloacetic acids, and lead (NSF/ANSI 53); manufacturer-reported for nitrate.
DIY. No plumbing.
Whole house
Installed where water enters the house. For fixtures, laundry and showers.
Aquasana Rhino EQ-1000 Whole House Filter (1,000,000 gallons)
Manufacturer-reported reduction for total trihalomethanes. Does not address haloacetic acids.
Plumber recommended if you are not comfortable with this install.
Express Water WH300SCKS 3-Stage Heavy Metal Whole House Filter (Sediment, KDF, Carbon)
Manufacturer-reported reduction for lead. Does not address total trihalomethanes and haloacetic acids.
Plumber recommended if you are not comfortable with this install.
Sprite High Output 2 Universal Shower Filter with 3-Setting Shower Head (HO2-WH-M)
Does not address total trihalomethanes and haloacetic acids.
DIY. No plumbing.
Softener or conditioner
Worth it at 7 grains per gallon or more.
Whirlpool WHES40E 40,000 Grain Water Softener
Certified for barium (NSF/ANSI 44). Does not address total trihalomethanes and haloacetic acids.
DIY if you are comfortable with this install.
Aquasure Serene Lite 650K Salt-Free Water Conditioner with Triple Purpose Pre-Filter
Does not address total trihalomethanes and haloacetic acids.
Plumber recommended if you are not comfortable with this install.
Whirlpool WHES30E 30,000 Grain Water Softener
Does not address total trihalomethanes and haloacetic acids.
DIY if you are comfortable with this install.
Questions about Castle Mountain Creeks Owners Association
Is Castle Mountain Creeks Owners Association tap water safe to drink?
In the last 36 months at least one result for Castle Mountain Creeks Owners Association was above a federal limit: Haloacetic Acids (HAA5) and Total Trihalomethanes. A single high sample is not always a violation because compliance is often judged on a running average; the violations section shows what EPA recorded. Results reflect the system's sampling points, not the plumbing in any one home.
Is Castle Mountain Creeks Owners Association water hard?
Hardness has not been reported for Castle Mountain Creeks Owners Association in a reviewed Consumer Confidence Report yet. The softener sizing widget uses a labelled county default until a report is reviewed.
Is Castle Mountain Creeks Owners Association water fluoridated?
Fluoride was not detected in the last 36 months.
Where does Castle Mountain Creeks Owners Association water come from?
Castle Mountain Creeks Owners Association draws from 1 active well with 2 treatment plants on record. Source and treatment details are listed above.
What filter fits Castle Mountain Creeks Owners Association water?
For drinking water the matching engine ranks Brondell Circle RC100 Reverse Osmosis System first for this profile, based on certified reduction claims for the contaminants flagged above. See the filters section for the reasoning and alternatives.
What was above the limit in Castle Mountain Creeks Owners Association water?
Haloacetic Acids (HAA5) and Total Trihalomethanes. Compare the value with the limit in the ranked chart and the full report above, and check the violations section for whether EPA recorded a violation.
Who to call
- System contact: GARRITY, ANNETTE, 208-462-3592
- DEQ Boise Regional Office, 1445 N Orchard St, Boise ID 83706, (208) 373-0550
- Central District Health (well testing, septic, local health questions)
Sources
Sample results as of 2026-08-14; inventory and violations from EPA SDWIS; page built 2026-09-14. 102 individual results reviewed.
More: Boise County, Total Trihalomethanes, Haloacetic Acids (HAA5)
Numbers are the system's samples at its taps and wells, not yours. Lead and copper are 90th percentiles from sampled homes. Well pages are nearby-sample estimates. Health text restates EPA and DEQ. Methodology.