Garden City Water and Sewer System water quality
1 contaminant above a federal limit. Hard, 9.9 gpg.
ID4010066. Data through 2026-06-16. DEQ record.
What's in it
PFOS
ElevatedPUR Basic Vertical Faucet Mount Filter System is certified to reduce it.
Manganese
Aesthetic issueoxidation filtration or manganese greensand.
Iron
Aesthetic issueoxidation filtration or manganese greensand.
PFHxS
Above limitPUR Basic Vertical Faucet Mount Filter System is certified to reduce it.
PFNA
ElevatedPUR Basic Vertical Faucet Mount Filter System is certified to reduce it.
HFPO-DA (GenX)
ElevatedPUR Basic Vertical Faucet Mount Filter System is certified to reduce it.
Arsenic
Elevatedreverse osmosis or adsorptive media.
PFBS
ElevatedPUR Basic Vertical Faucet Mount Filter System is certified to reduce it.
8 other contaminants tested, not detected or well below the limit
Fluoride 0.43ppm Gross Alpha ND Haloacetic Acids (HAA5) ND Nitrate (as N) ND PFOA ND Radium 226 + 228 ND Total Trihalomethanes 3.3ppb Uranium 3.0ppb
Filters that match
PUR Basic Vertical Faucet Mount Filter System
faucet mount · diy
- Arsenicdoes not address it
- HFPO-DA (GenX)removes it, NSF or WQA certified
- Irondoes not address it
- Manganesedoes not address it
- PFBSremoves it, NSF or WQA certified
- PFHxSremoves it, NSF or WQA certified
- PFNAremoves it, NSF or WQA certified
- PFOSremoves it, NSF or WQA certified
To cover everything flagged
- Aquasana OptimH2O Reverse Osmosis + Claryum drinking wateradds
- iSpring WGB32BM 3-Stage Whole House Iron and Manganese Filter whole houseadds
- Whirlpool WHES40E 40,000 Grain Water Softener softeneradds
Whirlpool WHES40E 40,000 Grain Water Softener for 9.9 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.
Aesthetic and unregulated
Taste, odor, staining or scale, not health limits. Bars use the EPA secondary standard where one exists.
Full contaminants reporthighest, latest, limit, trend, last sample
| Contaminant | Highest, 36 mo | Federal limit | Share of limit | Status | Trend | Last sample |
|---|---|---|---|---|---|---|
| Arsenic | 3.8ppb | 10.0ppb MCL | Elevated | 2025-08-06 | ||
| Fluoride | 0.43ppm | 4.00ppm MCL | Detected | 2023-11-01 | ||
| Gross Alpha | ND | 15.0pCi/L MCL | Not detected | 2025-09-04 | ||
| Haloacetic Acids (HAA5) | ND | 60.0ppb MCL | Not detected | 2025-08-21 | ||
| Hardness (as CaCO3) | 11.0gpg latest 9.9gpg | none | no federal limit | Meets | 2025-12-31 | |
| HFPO-DA (GenX) | 6.3ppt latest ND | 10.0ppt MCL | Elevated | 2026-06-16 EPA study | ||
| Iron | 0.92ppm latest ND | 0.30ppm aesthetic | Aesthetic issue | 2026-01-15 | ||
| Manganese | 247.0ppb latest 233.0ppb | 50.0ppb aesthetic | Aesthetic issue | 2026-01-15 | ||
| Nitrate (as N) | 0.50ppm latest ND | 10.00ppm MCL | Detected | 2026-06-16 | ||
| PFBS | 6.7ppt latest ND | none | no federal limit | Elevated | 2024-10-14 EPA study | |
| PFHxS | 25.4ppt latest ND | 10.0ppt MCL | Above limit | 2026-06-16 EPA study | ||
| PFNA | 8.2ppt latest ND | 10.0ppt MCL | Elevated | 2024-10-14 EPA study | ||
| PFOA | ND | 4.0ppt MCL | Not detected | 2024-10-14 EPA study | ||
| PFOSnote | 28.2ppt latest ND | 4.0ppt MCL | Elevated | 2024-10-14 EPA study | ||
| Radium 226 + 228 | 1.36pCi/L latest ND | 5.00pCi/L MCL | Detected | 2025-09-04 | ||
| Total Trihalomethanes | 3.3ppb latest 1.1ppb | 80.0ppb MCL | Detected | 2025-08-21 | ||
| Uranium | 3.0ppb | 30.0ppb MCL | Detected | 2025-09-04 |
- PFOS: Detected in EPA's UCMR 5 monitoring study at or above the 2024 MCL. Study samples are not compliance monitoring; compliance sampling under the PFAS rule begins in 2027 and is judged on a running annual average.
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.
17 other regulated contaminants tested
| Contaminant | 36 mo max | Limit | Status | Last sample |
|---|---|---|---|---|
| Antimony | ND | 6.0ppb | Not detected | 2023-11-01 |
| Atrazine | ND | 3.0ppb | Not detected | 2025-11-12 |
| Barium | 0.02ppm | 2.00ppm | Detected | 2023-11-01 |
| Benzene | ND | 5.0ppb | Not detected | 2026-05-18 |
| Beryllium | ND | 4.0ppb | Not detected | 2023-11-01 |
| Cadmium | ND | 5.0ppb | Not detected | 2023-11-01 |
| Chromium (total) | ND | 0.10ppm | Not detected | 2023-11-01 |
| Cyanide | ND | 0.20ppm | Not detected | 2023-11-01 |
| 1,2-Dibromo-3-chloropropane | ND | 0.2ppb | Not detected | 2025-11-12 |
| Lithium | 78.1ppb | none | Detected | 2024-10-14 |
| Mercury (inorganic) | ND | 2.0ppb | Not detected | 2023-11-01 |
| Nitrite (as N) | ND | 1.00ppm | Not detected | 2023-11-01 |
| Tetrachloroethylene | 0.7ppb | 5.0ppb | Detected | 2026-05-18 |
| Selenium | ND | 50.0ppb | Not detected | 2023-11-01 |
| Sodium | 24.90ppm | none | Detected | 2025-09-04 |
| Trichloroethylene | 0.7ppb | 5.0ppb | Detected | 2026-05-18 |
| Thallium | ND | 2.0ppb | Not detected | 2023-11-01 |
Hardness
Garden City Water and Sewer System reports hardness of 9.9 grains per gallon (170 mg/L as CaCO3), classified as hard in its 2025 Consumer Confidence Report. 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.
See also Boise City water hardness.
Track record30 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 (30)
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 |
|---|---|---|---|
| 2022 | Ground Water Rule | 1 | |
| 2017 | Synthetic Organic Chemicals | 29 | Routine monitoring, major · 1,2-Dibromo-3-chloropropane, Atrazine |
Lead and copper at the tap90th percentile of sampled homes against the action level
No lead and copper tap sampling summary in the window we reviewed.
Where the water comes from9 active wells
9 active wells, and 8 treatment points on record (SDWIS counts each chlorination or filtration point as a treatment plant).
WELL #12-MILLST BACK UP WELL: Susceptibility: ioc high (auto), voc high (auto), soc high (auto), microbial high (auto).
Source water assessment susceptibility: final map[IOC:Auto High Microbials:Auto High SOC:Auto High VOC:Auto High]; hydrologic sensitivity H; pci land use map[IOC:M Microbials:M SOC:M VOC:M]; system construction M;
Source names (9)
WELL #10, WELL #12-MILLST BACK UP WELL, WELL #13, WELL #4, WELL #5, WELL #6, WELL #7, WELL #8, WELL #9
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.
PUR Basic Vertical Faucet Mount Filter System
Certified for PFHxS, PFOS, and PFNA (NSF/ANSI 53). Does not address arsenic, iron, and manganese.
DIY. No plumbing.
Aquasana OptimH2O Reverse Osmosis + Claryum
Certified for arsenic, PFOS, and nitrate (NSF/ANSI 58, pentavalent); manufacturer-reported for PFHxS, PFNA, and HFPO-DA. Does not address iron and manganese.
Plumber recommended if you are not comfortable with a drain saddle and a tank. Not a whole-house solution.
PUR PLUS 11-Cup Pitcher with Lead-Reducing Filter
Certified for PFHxS, PFOS, and PFNA (NSF/ANSI 53). Does not address arsenic, iron, and manganese.
DIY. No plumbing.
Whole house
Installed where water enters the house. For fixtures, laundry and showers.
Express Water WH300SCKS 3-Stage Heavy Metal Whole House Filter (Sediment, KDF, Carbon)
Manufacturer-reported reduction for iron. Does not address PFHxS, arsenic, and PFOS and 4 more.
Plumber recommended if you are not comfortable with this install.
iSpring WGB32BM 3-Stage Whole House Iron and Manganese Filter
Manufacturer-reported reduction for iron and manganese. Does not address PFHxS, arsenic, and PFOS and 3 more.
Plumber recommended if you are not comfortable with this install.
Home Master HMF3SdgFeC 3-Stage Whole House Sediment, Iron and Carbon Filter
Manufacturer-reported reduction for iron and manganese. Does not address PFHxS, arsenic, and PFOS and 3 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, radium 226 + 228, and barium (NSF/ANSI 44); manufacturer-reported for iron. Does not address PFHxS, arsenic, and PFOS and 4 more.
DIY if you are comfortable with this install.
Whirlpool WHES30E 30,000 Grain Water Softener
Certified for hardness (NSF/ANSI 44); manufacturer-reported for iron. Does not address PFHxS, arsenic, and PFOS and 4 more.
DIY if you are comfortable with this install.
Whirlpool WHES33 33,000 Grain Water Softener
Certified for hardness (NSF/ANSI 44); manufacturer-reported for iron. Does not address PFHxS, arsenic, and PFOS and 4 more.
DIY if you are comfortable with this install.
Questions about Garden City Water and Sewer System
Is Garden City Water and Sewer System tap water safe to drink?
In the last 36 months at least one result for Garden City Water and Sewer System was above a federal limit: PFHxS. 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 Garden City Water and Sewer System water hard?
Garden City Water and Sewer System reports hardness of 9.9 grains per gallon (170 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 Garden City Water and Sewer System water fluoridated?
Fluoride was measured at up to 0.43 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 Garden City Water and Sewer System water come from?
Garden City Water and Sewer System draws from 9 active wells with 8 treatment plants on record. Source and treatment details are listed above.
What filter fits Garden City Water and Sewer System water?
For drinking water the matching engine ranks PUR Basic Vertical Faucet Mount Filter 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 Garden City Water and Sewer System water?
PFHxS. 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: VAUGHN, CHAD, 208-472-2949
- 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 2026-06-16; inventory and violations from EPA SDWIS; page built 2026-09-14. 301 individual results reviewed.
More: Boise City water, Garden City water, Ada County, Arsenic, Iron, Manganese, PFOS, PFHxS, PFNA, HFPO-DA (GenX), PFBS
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.