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Tap water quality report

London Water Co-Op

EPA monitoring tested this supplier for 72 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

72
contaminants tested
8
detected
63
people served
237
health-based violations
Oregon rankingsLead in OregonPFAS in Oregon
Water source
Surface water
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.

237
health-based violations
903
violations on file
15
still open
ViolationTypeStatusPeriod
TT Health-based Archived 2026-03-01 → 2026-03-31
TT Health-based Archived 2026-03-01 → 2026-03-31
TT Health-based Archived 2026-02-01 → 2026-02-28
TT Health-based Archived 2026-02-01 → 2026-02-28
TT Health-based Archived 2026-02-01 → 2026-02-28
TT Health-based Archived 2026-02-01 → 2026-02-28
TT Health-based Archived 2026-02-01 → 2026-02-28
TT Health-based Archived 2026-02-01 → 2026-02-28
TT Health-based Archived 2026-01-01 → 2026-01-31
TT Health-based Archived 2026-01-01 → 2026-01-31

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 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
0.0049 mg/L 33%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2025
TTHM
39.59 µg/L 49%
of the EPA limit 80 µg/L
worst single sample: 40.7 µg/L
7/7 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
27.9 µg/L 47%
of the EPA limit 60 µg/L
worst single sample: 28.7 µg/L
6/7 SYR4 2012–2019
Lead
4.263 µg/L 28%
of the EPA limit 15 µg/L
worst single sample: 4.3 µg/L
3/15 SYR4 2013–2019
Nitrate
106 µg/L 1.1%
of the EPA limit 10000 µg/L
 2/20 SYR4 2012–2019
Arsenic
1.62 µg/L 16%
of the EPA limit 10 µg/L
 1/2 SYR4 2016–2019
Barium
6.9 µg/L 0.3%
of the EPA limit 2000 µg/L
 1/2 SYR4 2016–2019
Copper
14 µg/L 1.1%
of the EPA limit 1300 µg/L
 1/15 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, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)Combined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneFluorideGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitrate-NitriteNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
LONDON WATER CO-OP
Phone
541-942-9422
Email
[email protected]

Frequently asked questions about London Water Co-Op

Is London Water Co-Op tap water safe to drink?

EPA monitoring detected 8 contaminants in London Water Co-Op'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 London Water Co-Op's water?

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

How many people does London Water Co-Op serve?

London Water Co-Op reports serving 63 people in Oregon, per its EPA record.

Has London Water Co-Op had any water quality violations?

The EPA has 903 violations on file for London Water Co-Op, of which 237 are health-based (a contaminant limit or required treatment was breached) and 15 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.