Tap WaterIndex

← Oregon

Tap water quality report

Hilltop Improvement District

EPA monitoring tested this supplier for 70 contaminants and detected 6. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

70
contaminants tested
6
detected
45
people served
67
health-based violations
Oregon rankingsLead in OregonPFAS in Oregon
Water source
Ground water
Ownership
Private
Counties served
Lane

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.

67
health-based violations
609
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2010-10-01 → 2010-12-31
MCL Health-based Resolved 2010-10-01 → 2010-12-31
MCL Health-based Resolved 2010-10-01 → 2010-12-31
MCL Health-based Resolved 2010-07-01 → 2010-09-30
MCL Health-based Resolved 2010-07-01 → 2010-09-30
MCL Health-based Resolved 2010-07-01 → 2010-09-30
MCL Health-based Resolved 2010-07-01 → 2010-09-30
MCL Health-based Resolved 2010-04-01 → 2010-06-30
MCL Health-based Resolved 2010-04-01 → 2010-06-30
MCL Health-based Resolved 2010-04-01 → 2010-06-30

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 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 15/15 LCR 2026
Nitrate
1600 µg/L 16%
of the EPA limit 10000 µg/L
 14/18 SYR4 2012–2019
Arsenic
22.815 µg/L 228%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 23.1 µg/L
4/52 SYR4 2012–2019
Nitrate-Nitrite
872.6 µg/L 8.7%
of the EPA limit 10000 µg/L
worst single sample: 875 µg/L
2/3 SYR4 2013–2019
Barium
28.3 µg/L 1.4%
of the EPA limit 2000 µg/L
 1/3 SYR4 2013–2019
Fluoride
123 µg/L 3.1%
of the EPA limit 4000 µg/L
 1/3 SYR4 2013–2019
64 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-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)Combined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
HILLTOP IMPROVEMENT DISTRICT
Phone
541-206-3976
Email
[email protected]

Frequently asked questions about Hilltop Improvement District

Is Hilltop Improvement District tap water safe to drink?

EPA monitoring detected 6 contaminants in Hilltop Improvement District'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 Hilltop Improvement District's water?

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

How many people does Hilltop Improvement District serve?

Hilltop Improvement District reports serving 45 people in Oregon, per its EPA record.

Has Hilltop Improvement District had any water quality violations?

The EPA has 609 violations on file for Hilltop Improvement District, of which 67 are health-based (a contaminant limit or required treatment was breached) and 0 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.