Is Gemstone Estates Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Private
Counties served: Matanuska-Susitna Borough

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.

health-based violations

266

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2015-10-01 → 2015-10-31
MCL	Health-based	Archived	2010-10-01 → 2010-10-31
MCL	Health-based	Archived	2010-10-01 → 2010-10-31
Other	Monitoring	Unaddressed	2026-01-09
Other	Monitoring	Resolved	2024-05-21
Other	Monitoring	Resolved	2020-10-01
Other	Monitoring	Resolved	2020-10-01
MR	Monitoring	Resolved	2020-01-01 → 2022-12-31
MR	Monitoring	Resolved	2012-10-01 → 2012-12-31
MR	Monitoring	Resolved	2012-10-01 → 2012-12-31

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Copper	76 µg/L 5.8% of the EPA limit 1300 µg/L	10/10	SYR4	2016–2019
Lead	0.00070 mg/L 4.7% of the EPA limit 0.0150 mg/L	8/8	LCR	2025
Lead	1.43 µg/L 9.5% of the EPA limit 15 µg/L	8/10	SYR4	2016–2019
Nitrate-Nitrite	288 µg/L 2.9% of the EPA limit 10000 µg/L	8/22	SYR4	2012–2019
Barium	23.8 µg/L 1.2% of the EPA limit 2000 µg/L	3/3	SYR4	2013–2019
Fluoride	120 µg/L 3% of the EPA limit 4000 µg/L	2/3	SYR4	2013–2019

38 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalArsenicBenzeneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCyanideCadmiumCarbon TetrachlorideChloroformChromiumCombined Radium (-226 And -228)Combined UraniumDichloromethaneDibromochloromethaneEthylbenzeneGross Alpha, Excl. Radon And UMercurySeleniumStyreneTTHMTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: STEMMONS, SHANNEL
Phone: 405-239-9900
Email: homewaterllc@hotmail.com

Frequently asked questions about Gemstone Estates

Is Gemstone Estates tap water safe to drink?

EPA monitoring detected 6 contaminants in Gemstone Estates'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 Gemstone Estates's water?

EPA monitoring detected Copper, Lead, Lead, Nitrate-Nitrite, Barium, and others. The full list with the level and data source for each is above.

How many people does Gemstone Estates serve?

Gemstone Estates reports serving 75 people in Alaska, per its EPA record.

Has Gemstone Estates had any water quality violations?

The EPA has 266 violations on file for Gemstone Estates, of which 3 are health-based (a contaminant limit or required treatment was breached) and 1 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.