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Tap water quality report

Lynden Water Department

EPA monitoring tested this supplier for 105 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

105
contaminants tested
12
detected
20,062
people served
19
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Surface water
Ownership
Local government
Counties served
Whatcom

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.

19
health-based violations
32
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2023-12-01 → 2023-12-31
TT Health-based Resolved 2023-12-01 → 2023-12-31
MCL Health-based Archived 2009-10-01 → 2009-12-31
MCL Health-based Archived 2009-10-01 → 2009-12-31
MCL Health-based Archived 2009-07-01 → 2009-09-30
MCL Health-based Archived 2009-04-01 → 2009-06-30
MCL Health-based Archived 2009-01-01 → 2009-03-31
MCL Health-based Archived 2008-10-01 → 2008-12-31
MCL Health-based Archived 2008-07-01 → 2008-09-30
MCL Health-based Archived 2008-01-01 → 2008-03-31

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
Chloroform
31.6 µg/L
No EPA limit set
worst single sample: 46.5 µg/L
81/81 SYR4 2012–2019
TTHM
34.305 µg/L 43%
of the EPA limit 80 µg/L
worst single sample: 48.1 µg/L
80/80 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
23.39 µg/L 39%
of the EPA limit 60 µg/L
worst single sample: 26.4 µg/L
78/78 SYR4 2012–2019
Trichloroacetic Acid
15.49 µg/L
No EPA limit set
worst single sample: 17.9 µg/L
78/78 SYR4 2012–2019
Bromodichloromethane
2.535 µg/L
No EPA limit set
worst single sample: 3.2 µg/L
72/72 SYR4 2012–2019
Dichloroacetic Acid
9.935 µg/L
No EPA limit set
worst single sample: 11.7 µg/L
72/76 SYR4 2012–2019
Nitrate
14200 µg/L 142%
of the EPA limit, at the 95th percentile of samples — 10000 µg/L
worst single sample: 16800 µg/L
46/46 SYR4 2012–2019
Lead
0.0023 mg/L 15%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2023
Barium
12 µg/L 0.6%
of the EPA limit 2000 µg/L
 1/1 SYR4 2012
Fluoride
780 µg/L 20%
of the EPA limit 4000 µg/L
 1/1 SYR4 2012
Gross Beta Particle Activity
4.41 pCi/L
No EPA limit set
 1/2 SYR4 2015
Nitrate-Nitrite
290 µg/L 2.9%
of the EPA limit 10000 µg/L
 1/1 SYR4 2012
93 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, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCopperCyanideCadmiumCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDibromochloromethaneDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitritePfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Joshua Libolt

Frequently asked questions about Lynden Water Department

Is Lynden Water Department tap water safe to drink?

EPA monitoring detected 12 contaminants in Lynden Water Department'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 Lynden Water Department's water?

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

How many people does Lynden Water Department serve?

Lynden Water Department reports serving 20,062 people in Washington, per its EPA record.

Has Lynden Water Department had any water quality violations?

The EPA has 32 violations on file for Lynden Water Department, of which 19 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.