Caldwell Housing Authority water quality
Met every federal limit. 4 contaminants at half a limit or higher. hardness not in the latest CCR.
ID3140012. Data through 2026-06-30. DEQ record.
What's in it
Uranium
ElevatedAquasana OptimH2O Reverse Osmosis + Claryum: manufacturer-reported, not certified.
Arsenic
ElevatedAquasana OptimH2O Reverse Osmosis + Claryum is certified to reduce it.
Lead
ElevatedAquasana OptimH2O Reverse Osmosis + Claryum is certified to reduce it.
Nitrate (as N)
ElevatedEPA: infants below the age of six months who drink water containing nitrate in excess of the MCL could become seriously ill and, if untreated, may die.
Aquasana OptimH2O Reverse Osmosis + Claryum is certified to reduce it.
7 other contaminants tested, not detected or well below the limit
Copper 0.06ppm Gross Alpha 19.5pCi/L Haloacetic Acids (HAA5) ND HFPO-DA (GenX) ND PFHxS ND PFNA ND Total Trihalomethanes 10.8ppb
Filters that match
Aquasana OptimH2O Reverse Osmosis + Claryum
under sink ro · diy
- Arsenicremoves it, NSF or WQA certified
- Leadremoves it, NSF or WQA certified
- Nitrate (as N)removes it, NSF or WQA certified
- Uraniumremoves it, per manufacturer testing
Nothing in this water calls for whole-house treatment. A drinking-water filter covers the exposure that matters. Whole-house units here are optional, mainly for taste and chlorine.
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 | 6.3ppb | 10.0ppb MCL | Elevated | 2025-06-16 | ||
| Copper 90th percentile at home taps note | 0.06ppm latest 0.01ppm | 1.30ppm AL | Detected | 2026-06-30 | ||
| Gross Alphanote | 19.5pCi/L | 15.0pCi/L MCL | Not detected | 2025-06-16 | ||
| Haloacetic Acids (HAA5) | 2.2ppb latest ND | 60.0ppb MCL | Detected | 2025-08-21 | ||
| HFPO-DA (GenX) | ND | 10.0ppt MCL | Not detected | 2024-05-07 | ||
| Lead 90th percentile at home taps note | 16.0ppb latest 9.0ppb | 15.0ppb AL | Elevated | 2026-06-30 | ||
| Nitrate (as N) | 5.50ppm latest 4.90ppm | 10.00ppm MCL | Elevated | 2025-06-16 | ||
| PFHxS | ND | 10.0ppt MCL | Not detected | 2024-05-07 | ||
| PFNA | ND | 10.0ppt MCL | Not detected | 2024-05-07 | ||
| Total Trihalomethanes | 10.8ppb latest 0.7ppb | 80.0ppb MCL | Detected | 2025-08-21 | ||
| Uranium | 22.0ppb latest 21.0ppb | 30.0ppb MCL | Elevated | 2025-06-16 |
- Copper: 90th percentile of samples taken at customer taps. Results depend on the home's plumbing.
- Gross Alpha: Compliance uses the running average of gross alpha minus uranium. Shown value is the highest lab result; the adjusted average is 0.0 pCi/L after subtracting 14.41 pCi/L for uranium.
- 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.
7 other regulated contaminants tested
| Contaminant | 36 mo max | Limit | Status | Last sample |
|---|---|---|---|---|
| Atrazine | ND | 3.0ppb | Not detected | 2025-06-16 |
| Benzene | ND | 5.0ppb | Not detected | 2025-06-16 |
| 1,2-Dibromo-3-chloropropane | ND | 0.2ppb | Not detected | 2025-06-16 |
| Nitrite (as N) | ND | 1.00ppm | Not detected | 2025-06-16 |
| Tetrachloroethylene | ND | 5.0ppb | Not detected | 2025-06-16 |
| Sodium | 85.30ppm | none | Detected | 2025-06-16 |
| Trichloroethylene | ND | 5.0ppb | Not detected | 2025-06-16 |
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.
See also Caldwell water hardness.
Track record14 violations on record, 0 health-based
✓ no violation recorded n monitoring or reporting only n includes a health-based violation ? outside the loaded record
No health-based violations (MCL, treatment technique, or disinfectant level) in the last ten years.
Monitoring and reporting violations (14)
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 |
|---|---|---|---|
| 2024 | Lead and Copper Rule | 2 (1 open) | Follow-up or routine tap sampling (LCR); Lead service line replacement (LCR) |
| 2023 | Lead and Copper Rule | 3 | Follow-up or routine tap sampling (LCR); Initial, follow-up, or routine source water monitoring (LCR) |
| 2022 | Miscellaneous | 5 | Water quality parameter monitoring (LCR) · pH |
| 2022 | Lead and Copper Rule | 1 | Water quality parameter monitoring (LCR) |
| 2018 | Revised Total Coliform Rule | 1 | Monitoring, routine (RTCR) |
| 2017 | Stage 1 Disinfectants and Disinfection Byproducts Rule | 1 | Monitoring and reporting (DBP) · Chlorine (residual) |
| 2016 | Stage 1 Disinfectants and Disinfection Byproducts Rule | 1 | Monitoring and reporting (DBP) · Chlorine (residual) |
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 from2 active wells
2 active wells, and 1 treatment point on record (SDWIS counts each chlorination or filtration point as a treatment plant).
WELL #4 (NEW): Susceptibility: ioc moderate, voc moderate, soc moderate, microbial moderate.
Source water assessment susceptibility: final map[IOC:Moderate Microbials:Moderate SOC:Moderate VOC:Moderate]; hydrologic sensitivity M; pci land use map[IOC:M Microbials:M SOC:M VOC:M]; system construction L;
Source names (2)
WELL #4 (NEW), WELL #5
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.
Aquasana OptimH2O Reverse Osmosis + Claryum
Certified for arsenic, nitrate, and lead (NSF/ANSI 58, pentavalent); manufacturer-reported for uranium.
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 lead, total trihalomethanes, and haloacetic acids (NSF/ANSI 53); manufacturer-reported for arsenic, uranium, and nitrate.
DIY. No plumbing.
Brondell Circle RC100 Reverse Osmosis System
Certified for arsenic, lead, and copper (NSF/ANSI 58, pentavalent). Does not address uranium and nitrate.
Plumber recommended if you are not comfortable with a drain saddle and a tank. Not a whole-house solution.
Whole house
Installed where water enters the house. For fixtures, laundry and showers.
Nothing in this water calls for whole-house treatment. A drinking-water filter covers the exposure that matters. Whole-house units here are optional, mainly for taste and chlorine.
Express Water WH300SCKS 3-Stage Heavy Metal Whole House Filter (Sediment, KDF, Carbon)
Manufacturer-reported reduction for lead. Does not address arsenic, uranium, and nitrate.
Plumber recommended if you are not comfortable with this install.
Crystal Quest Ultimate Whole House Arsenic Removal Filter (Triple Cartridge, 4-6 GPM)
Manufacturer-reported reduction for arsenic. Does not address uranium, nitrate, and lead.
Plumber recommended if you are not comfortable with this install.
Aquasana Rhino EQ-1000 Whole House Filter (1,000,000 gallons)
Manufacturer-reported reduction for total trihalomethanes. Does not address arsenic, uranium, and nitrate and 1 more.
Plumber recommended if you are not comfortable with this install.
Softener or conditioner
Worth it at 7 grains per gallon or more.
Aquasure Serene Lite 650K Salt-Free Water Conditioner with Triple Purpose Pre-Filter
Does not address arsenic, uranium, and nitrate and 1 more.
Plumber recommended if you are not comfortable with this install.
Whirlpool WHES30E 30,000 Grain Water Softener
Does not address arsenic, uranium, and nitrate and 1 more.
DIY if you are comfortable with this install.
Whirlpool WHES40E 40,000 Grain Water Softener
Does not address arsenic, uranium, and nitrate and 1 more.
DIY if you are comfortable with this install.
Questions about Caldwell Housing Authority
Is Caldwell Housing Authority tap water safe to drink?
Caldwell Housing Authority met every federal limit in the last 36 months, with no open health-based violation. 4 contaminants were at half the limit or higher: Arsenic, Lead, Nitrate (as N) and Uranium. The results table shows each value against its limit. Results reflect the system's sampling points, not the plumbing in any one home.
Is Caldwell Housing Authority water hard?
Hardness has not been reported for Caldwell Housing Authority in a reviewed Consumer Confidence Report yet. The softener sizing widget uses a labelled county default until a report is reviewed.
Is Caldwell Housing Authority water fluoridated?
No fluoride result in the last 36 months.
Where does Caldwell Housing Authority water come from?
Caldwell Housing Authority draws from 2 active wells with 1 treatment plant on record. Source and treatment details are listed above.
What filter fits Caldwell Housing Authority water?
For drinking water the matching engine ranks Aquasana OptimH2O Reverse Osmosis + Claryum first for this profile, based on certified reduction claims for the contaminants flagged above. See the filters section for the reasoning and alternatives.
Who to call
- System contact: DITTENBER, MIKE, 208-459-2232
- DEQ Boise Regional Office, 1445 N Orchard St, Boise ID 83706, (208) 373-0550
- Southwest District Health (well testing, septic, local health questions)
Sources
Sample results as of 2026-06-30; inventory and violations from EPA SDWIS; page built 2026-09-14. 79 individual results reviewed.
More: Caldwell water, Canyon County, Arsenic, Uranium, Nitrate (as N), Lead
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.