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Rolling Hills Estates Water Company

EPA monitoring tested this supplier for 68 contaminants and detected 9. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

68
contaminants tested
9
detected
250
people served
14
health-based violations
Idaho rankingsLead in IdahoPFAS in Idaho
Water source
Ground water
Ownership
Private
Counties served
Canyon

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.

14
health-based violations
119
violations on file
2
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2003-11-01 → 2003-11-30
MCL Health-based Archived 2003-10-01 → 2003-10-31
MCL Health-based Archived 1999-10-01 → 1999-10-31
MCL Health-based Archived 1997-12-01 → 1997-12-31
MCL Health-based Archived 1997-11-01 → 1997-11-30
MCL Health-based Resolved 1993-09-01 → 1993-09-30
MCL Health-based Resolved 1993-09-01 → 1993-09-30
MCL Health-based Resolved 1993-09-01 → 1993-09-30
MCL Health-based Archived 1991-07-01 → 1991-07-31
MCL Health-based Archived 1991-07-01 → 1991-07-31

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
3900 µg/L 39%
of the EPA limit 10000 µg/L
 18/20 SYR4 2012–2019
Lead
0.0040 mg/L 27%
of the EPA limit 0.0150 mg/L
 8/8 LCR 2023
TTHM
6.91 µg/L 8.6%
of the EPA limit 80 µg/L
 5/5 SYR4 2012–2019
Arsenic
7 µg/L 70%
of the EPA limit 10 µg/L
 3/3 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
2.34 µg/L 3.9%
of the EPA limit 60 µg/L
 3/5 SYR4 2012–2019
Combined Uranium
6 µg/L 20%
of the EPA limit 30 µg/L
 2/2 SYR4 2013–2019
Di(2-ethylhexyl) Phthalate
1.41 µg/L 24%
of the EPA limit 6 µg/L
 1/1 SYR4 2019
Fluoride
110 µg/L 2.8%
of the EPA limit 4000 µg/L
 1/1 SYR4 2019
Nitrate-Nitrite
2700 µg/L 27%
of the EPA limit 10000 µg/L
 1/1 SYR4 2019
59 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
STONE, HAROLD
Phone
208-467-4915
Email
rhw9063@gmail.com

Frequently asked questions about Rolling Hills Estates Water Company

Is Rolling Hills Estates Water Company tap water safe to drink?

EPA monitoring detected 9 contaminants in Rolling Hills Estates Water Company'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 Rolling Hills Estates Water Company's water?

EPA monitoring detected Nitrate, Lead, TTHM, Arsenic, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.

How many people does Rolling Hills Estates Water Company serve?

Rolling Hills Estates Water Company reports serving 250 people in Idaho, per its EPA record.

Has Rolling Hills Estates Water Company had any water quality violations?

The EPA has 119 violations on file for Rolling Hills Estates Water Company, of which 14 are health-based (a contaminant limit or required treatment was breached) and 2 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.