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Tap water quality report

Rainbow Water District

EPA monitoring tested this supplier for 104 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

104
contaminants tested
12
detected
6,300
people served
5
health-based violations
Oregon rankingsLead in OregonPFAS in Oregon
Water source
Ground water under surface influence
Ownership
Local government
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.

5
health-based violations
37
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2022-09-13
TT Health-based Resolved 2022-09-13
TT Health-based Resolved 2022-09-13
MCL Health-based Resolved 2003-06-01 → 2003-06-30
MCL Health-based Resolved 2003-06-01 → 2003-06-30
MON Monitoring Resolved 2025-08-01 → 2025-08-31
MR Monitoring Resolved 2025-02-01 → 2025-02-28
MR Monitoring Resolved 2025-02-01 → 2025-02-28
MR Monitoring Resolved 2025-02-01 → 2025-02-28
MR Monitoring Resolved 2012-01-01 → 2012-12-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFOS 0.0094 µg/L 4/10 2025
PFOA 0.0042 µg/L 2/10 2025
PFBS 0.0038 µg/L 1/10 2025

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
Copper
616 µg/L 47%
of the EPA limit 1300 µg/L
worst single sample: 792 µg/L
55/60 SYR4 2012–2018
Nitrate
2610 µg/L 26%
of the EPA limit 10000 µg/L
worst single sample: 2800 µg/L
40/56 SYR4 2012–2019
Lead
4 µg/L 27%
of the EPA limit 15 µg/L
worst single sample: 8 µg/L
29/60 SYR4 2012–2018
Lead
0.0021 mg/L 14%
of the EPA limit 0.0150 mg/L
 18/18 LCR 2024
TTHM
3.16 µg/L 4%
of the EPA limit 80 µg/L
worst single sample: 3.8 µg/L
9/15 SYR4 2013–2019
Arsenic
4.96 µg/L 50%
of the EPA limit 10 µg/L
worst single sample: 5 µg/L
5/7 SYR4 2012–2017
Nitrate-Nitrite
1647.5 µg/L 16%
of the EPA limit 10000 µg/L
worst single sample: 1700 µg/L
2/4 SYR4 2012–2017
Barium
2 µg/L 0.1%
of the EPA limit 2000 µg/L
 1/4 SYR4 2012–2017
Lithium
9.3 µg/L
No EPA limit set
 1/10 UCMR-5 2025
92 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)Combined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneFluorideGlyphosateGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)Total Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
RAINBOW WATER DISTRICT
Phone
541-746-1676
Email
[email protected]

Frequently asked questions about Rainbow Water District

Is Rainbow Water District tap water safe to drink?

EPA monitoring detected 12 contaminants in Rainbow Water 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 Rainbow Water District's water?

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

How many people does Rainbow Water District serve?

Rainbow Water District reports serving 6,300 people in Oregon, per its EPA record.

Has Rainbow Water District had any water quality violations?

The EPA has 37 violations on file for Rainbow Water District, of which 5 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.