Trinity Estates Water Users Association water quality
Met every federal limit. 5 contaminants at half a limit or higher. Hard, 9.2 gpg.
ID4200053. Data through 2026-08-20. DEQ record.
What's in 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.
HFPO-DA (GenX)
ElevatedAquasana OptimH2O Reverse Osmosis + Claryum: manufacturer-reported, not certified.
Arsenic
ElevatedAquasana OptimH2O Reverse Osmosis + Claryum is certified to reduce it.
PFNA
ElevatedAquasana OptimH2O Reverse Osmosis + Claryum: manufacturer-reported, not certified.
PFHxS
ElevatedAquasana OptimH2O Reverse Osmosis + Claryum: manufacturer-reported, not certified.
9 other contaminants tested, not detected or well below the limit
Copper 0.43ppm Fluoride 0.25ppm Gross Alpha ND Haloacetic Acids (HAA5) 2.0ppb Lead 7.0ppb Manganese ND Radium 226 + 228 ND Total Trihalomethanes 6.2ppb Uranium ND
Filters that match
Aquasana OptimH2O Reverse Osmosis + Claryum
under sink ro · diy
- Arsenicremoves it, NSF or WQA certified
- HFPO-DA (GenX)removes it, per manufacturer testing
- Nitrate (as N)removes it, NSF or WQA certified
- PFHxSremoves it, per manufacturer testing
- PFNAremoves it, per manufacturer testing
To cover everything flagged
- Whirlpool WHES40E 40,000 Grain Water Softener softeneradds
Whirlpool WHES40E 40,000 Grain Water Softener for 9.2 gpg hardness.
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 | 3.8ppb latest 3.1ppb | 10.0ppb MCL | Elevated | 2026-06-17 | ||
| Copper 90th percentile at home taps note | 0.43ppm | 1.30ppm AL | Detected | 2025-12-31 | ||
| Fluoride | 0.25ppm | 4.00ppm MCL | Detected | 2026-06-17 | ||
| Gross Alphanote | 3.86pCi/L latest ND | 15.0pCi/L MCL | Detected | 2026-06-17 | ||
| Haloacetic Acids (HAA5) | 2.0ppb | 60.0ppb MCL | Detected | 2025-07-15 | ||
| Hardness (as CaCO3) | 9.2gpg | none | no federal limit | Meets | 2023-09-13 | |
| HFPO-DA (GenX) | 5.9ppt latest 5.2ppt | 10.0ppt MCL | Elevated | 2025-04-01 | ||
| Lead 90th percentile at home taps note | 7.0ppb | 15.0ppb AL | Detected | 2025-12-31 | ||
| Manganese | ND | 50.0ppb aesthetic | Not detected | 2025-04-01 | ||
| Nitrate (as N) | 8.50ppm latest 7.10ppm | 10.00ppm MCL | Elevated | 2026-08-20 | ||
| PFHxS | 3.3ppt | 10.0ppt MCL | Elevated | 2025-04-01 | ||
| PFNA | 3.0ppt | 10.0ppt MCL | Elevated | 2025-04-01 | ||
| Radium 226 + 228 | ND | 5.00pCi/L MCL | Not detected | 2026-06-17 | ||
| Total Trihalomethanes | 6.2ppb | 80.0ppb MCL | Detected | 2025-07-15 | ||
| Uranium | 1.0ppb latest ND | 30.0ppb MCL | Detected | 2026-06-17 |
- 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 3.19 pCi/L after subtracting 0.67 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.
15 other regulated contaminants tested
| Contaminant | 36 mo max | Limit | Status | Last sample |
|---|---|---|---|---|
| Antimony | ND | 6.0ppb | Not detected | 2026-06-17 |
| Atrazine | ND | 3.0ppb | Not detected | 2026-06-17 |
| Barium | 0.19ppm | 2.00ppm | Detected | 2026-06-17 |
| Benzene | ND | 5.0ppb | Not detected | 2026-06-17 |
| Beryllium | ND | 4.0ppb | Not detected | 2026-06-17 |
| Cadmium | ND | 5.0ppb | Not detected | 2026-06-17 |
| Chromium (total) | ND | 0.10ppm | Not detected | 2026-06-17 |
| Cyanide | ND | 0.20ppm | Not detected | 2026-06-17 |
| 1,2-Dibromo-3-chloropropane | ND | 0.2ppb | Not detected | 2026-06-17 |
| Mercury (inorganic) | ND | 2.0ppb | Not detected | 2026-06-17 |
| Tetrachloroethylene | ND | 5.0ppb | Not detected | 2026-06-17 |
| Selenium | ND | 50.0ppb | Not detected | 2026-06-17 |
| Sodium | 35.90ppm | none | Detected | 2025-05-06 |
| Trichloroethylene | ND | 5.0ppb | Not detected | 2026-06-17 |
| Thallium | ND | 2.0ppb | Not detected | 2026-06-17 |
Hardness
Trinity Estates Water Users Association reports hardness of 9.2 grains per gallon (158 mg/L as CaCO3), classified as hard in DEQ compliance sampling. At 7 grains per gallon or more, a correctly sized softener usually pays for itself in appliance life and soap. Hardness is not a federal health violation.
Track record8 violations on record, 1 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 |
|---|---|---|---|---|
| 2019-09-01 to 2019-09-30 | Maximum contaminant level exceeded | n/a | Revised Total Coliform Rule | resolved 2020-02-05 |
Monitoring and reporting violations (7)
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 | Stage 1 Disinfectants and Disinfection Byproducts Rule | 1 | Monitoring and reporting (DBP) · Chlorine (residual) |
| 2020 | Ground Water Rule | 1 | |
| 2017 | Stage 1 Disinfectants and Disinfection Byproducts Rule | 1 | Monitoring and reporting (DBP) · Chlorine (residual) |
| 2017 | Revised Total Coliform Rule | 1 | Monitoring, routine (RTCR) |
| 2017 | Ground Water Rule | 2 | |
| 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 2 treatment points on record (SDWIS counts each chlorination or filtration point as a treatment plant).
WELL #1: Susceptibility: ioc moderate, voc moderate, soc moderate, microbial high (auto).
Source water assessment susceptibility: final map[IOC:Moderate Microbials:Auto High SOC:Moderate VOC:Moderate]; hydrologic sensitivity H; pci land use map[IOC:M Microbials:M SOC:M VOC:M]; system construction M;
Source names (2)
WELL #1, WELL #2
Every match, by categorytop three per category
We may earn a commission if you buy through these links. Rankings come from the matching engine (certification + flagged contaminants + annual cost), not from who pays more. How we earn money. As an Amazon Associate we earn from qualifying purchases. Prices are not shown; Amazon sets them on its site.
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 fluoride (NSF/ANSI 58, pentavalent); manufacturer-reported for PFHxS, PFNA, and HFPO-DA.
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 arsenic, nitrate, and PFHxS.
DIY. No plumbing.
PUR Basic Vertical Faucet Mount Filter System
Certified for PFHxS, PFNA, and HFPO-DA (NSF/ANSI 53). Does not address arsenic and nitrate.
DIY. No plumbing.
Whole house
Installed where water enters the house. For fixtures, laundry and showers.
Crystal Quest Ultimate Whole House Arsenic Removal Filter (Triple Cartridge, 4-6 GPM)
Manufacturer-reported reduction for arsenic. Does not address nitrate, PFHxS, and PFNA and 1 more.
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, nitrate, and PFHxS and 2 more.
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 arsenic, nitrate, and PFHxS and 2 more.
Plumber recommended if you are not comfortable with this install.
Softener or conditioner
Worth it at 7 grains per gallon or more.
Whirlpool WHES40E 40,000 Grain Water Softener
Certified for hardness and barium (NSF/ANSI 44). Does not address arsenic, nitrate, and PFHxS and 2 more.
DIY if you are comfortable with this install.
Aquasure Serene Lite 650K Salt-Free Water Conditioner with Triple Purpose Pre-Filter
Manufacturer-reported reduction for hardness. Does not address arsenic, nitrate, and PFHxS and 2 more.
Plumber recommended if you are not comfortable with this install.
Whirlpool WHES30E 30,000 Grain Water Softener
Certified for hardness (NSF/ANSI 44). Does not address arsenic, nitrate, and PFHxS and 2 more.
DIY if you are comfortable with this install.
Questions about Trinity Estates Water Users Association
Is Trinity Estates Water Users Association tap water safe to drink?
Trinity Estates Water Users Association met every federal limit in the last 36 months, with no open health-based violation. 5 contaminants were at half the limit or higher: Arsenic, HFPO-DA (GenX), Nitrate (as N), PFHxS and PFNA. The results table shows each value against its limit. Results reflect the system's sampling points, not the plumbing in any one home.
Is Trinity Estates Water Users Association water hard?
Trinity Estates Water Users Association reports hardness of 9.2 grains per gallon (158 mg/L as CaCO3), classified as hard. Hardness is not a health issue. At 7 grains or more most households see scale and soap scum; a softener is a reasonable choice.
Is Trinity Estates Water Users Association water fluoridated?
Fluoride was measured at up to 0.25 mg/L, below the 0.7 mg/L level used for community fluoridation, so it is naturally occurring rather than added. The federal limit (MCL) is 4 mg/L.
Where does Trinity Estates Water Users Association water come from?
Trinity Estates Water Users Association draws from 2 active wells with 2 treatment plants on record. Source and treatment details are listed above.
What filter fits Trinity Estates Water Users Association 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: HICKS, KENT, 208-590-0969
- 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 2026-08-20; inventory and violations from EPA SDWIS; page built 2026-09-14. 95 individual results reviewed.
More: Elmore County, Arsenic, Nitrate (as N), PFHxS, PFNA, HFPO-DA (GenX)
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.