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Tap water quality report

Mt Vernon, WA

EPA monitoring detected 26 contaminants across the 29 water suppliers serving Mt Vernon. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

29
water suppliers
4,687
people served
26
contaminants found
Washington rankings Lead in Washington PFAS in Washington

What was found in Mt Vernon's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
530 µg/L 5.3%
of the EPA limit 10000 µg/L
Main supplier: CAMANO CO-OP WATER & POWER CO · 1,071 people · 2019
Highest in the city: 9479 µg/L — HILLCREST VILLAGE WATER CO INC · 770 people · 2019
22/29 SYR4
Nitrate-Nitrite
443.5 µg/L 4.4%
of the EPA limit 10000 µg/L
Main supplier: CAMANO CO-OP WATER & POWER CO · 1,071 people · 2016
Highest in the city: 7230 µg/L — HILLCREST VILLAGE WATER CO INC · 770 people · 2016
17/29 SYR4
Fluoride
129.5 µg/L 3.2%
of the EPA limit 4000 µg/L
Main supplier: CAMANO CO-OP WATER & POWER CO · 1,071 people · 2016
Highest in the city: 565 µg/L — HILLCREST VILLAGE WATER CO INC · 770 people · 2016
17/29 SYR4
Copper
5 µg/L 0.4%
of the EPA limit 1300 µg/L
Main supplier: CAMANO CO-OP WATER & POWER CO · 1,071 people · 2016
Highest in the city: 198.85 µg/L — DRIFTWOOD SHORES WATER SYSTEM INC · 222 people · 2019
7/29 SYR4
Cyanide
172 µg/L 86%
of the EPA limit 200 µg/L
Highest in the city: TOWNSHIP 29 WATER ASSOCIATION · 42 people · 2017
1/29 SYR4
TTHM
54.3 µg/L 68%
of the EPA limit 80 µg/L
Main supplier: CAMANO CO-OP WATER & POWER CO · 1,071 people · 2019
Highest in the city: 154.6 µg/L — SEAWEST WATER SYSTEM · 38 people · 2019
16/29 SYR4
Barium
12 µg/L 0.6%
of the EPA limit 2000 µg/L
Main supplier: CAMANO CO-OP WATER & POWER CO · 1,071 people · 2016
Highest in the city: 110 µg/L — HILLCREST VILLAGE WATER CO INC · 770 people · 2016
16/29 SYR4
Total Haloacetic Acids (HAA5)
11.32 µg/L 19%
of the EPA limit 60 µg/L
Main supplier: CAMANO CO-OP WATER & POWER CO · 1,071 people · 2019
Highest in the city: 109.9 µg/L — SEAWEST WATER SYSTEM · 38 people · 2019
15/29 SYR4
Bromoform
26.225 µg/L
No EPA limit set
Main supplier: CAMANO CO-OP WATER & POWER CO · 1,071 people · 2019
Highest in the city: 102.705 µg/L — TOWNSHIP 29 WATER ASSOCIATION · 42 people · 2019
15/29 SYR4
Chloroform
14.6 µg/L
No EPA limit set
Main supplier: CAMANO CO-OP WATER & POWER CO · 1,071 people · 2019
Highest in the city: 102.18 µg/L — BEVERLY BEACH IMPROVEMENT CLUB · 56 people · 2019
16/29 SYR4
Bromodichloromethane
12.55 µg/L
No EPA limit set
Main supplier: CAMANO CO-OP WATER & POWER CO · 1,071 people · 2019
Highest in the city: 52.5 µg/L — SEAWEST WATER SYSTEM · 38 people · 2019
16/29 SYR4
Dichloroacetic Acid
3.98 µg/L
No EPA limit set
Main supplier: CAMANO CO-OP WATER & POWER CO · 1,071 people · 2019
Highest in the city: 52.1 µg/L — SEAWEST WATER SYSTEM · 38 people · 2019
12/29 SYR4
Trichloroacetic Acid
2.39 µg/L
No EPA limit set
Main supplier: CAMANO CO-OP WATER & POWER CO · 1,071 people · 2019
Highest in the city: 47.2 µg/L — SEAWEST WATER SYSTEM · 38 people · 2019
15/29 SYR4
Dibromochloromethane
19 µg/L
No EPA limit set
Main supplier: CAMANO CO-OP WATER & POWER CO · 1,071 people · 2019
Highest in the city: 35.8 µg/L — SEAWEST WATER SYSTEM · 38 people · 2019
16/29 SYR4
Lead
22.35 µg/L 149%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Highest in the city: DRIFTWOOD SHORES WATER SYSTEM INC · 222 people · 2019
5/29 SYR4
Dibromoacetic Acid
9.03 µg/L
No EPA limit set
Main supplier: CAMANO CO-OP WATER & POWER CO · 1,071 people · 2019
Highest in the city: 13.98 µg/L — ARROWHEAD BEACH COOP WATER ASSOC · 167 people · 2019
11/29 SYR4
Arsenic
9.4 µg/L 94%
of the EPA limit 10 µg/L
Main supplier: CAMANO CO-OP WATER & POWER CO · 1,071 people · 2016
26/29 SYR4
Monobromoacetic Acid
9.215 µg/L
No EPA limit set
Highest in the city: SEAWEST WATER SYSTEM · 38 people · 2019
6/29 SYR4
Gross Beta Particle Activity
6.25 pCi/L
No EPA limit set
Highest in the city: HARRIS CUSTER ESTATES WATER ASSN · 194 people · 2016
8/29 SYR4
Chromium
1 µg/L 1%
of the EPA limit 100 µg/L
Main supplier: CAMANO CO-OP WATER & POWER CO · 1,071 people · 2016
Highest in the city: 6 µg/L — CAMANO COLONY WATER SYSTEM INC · 53 people · 2018
11/29 SYR4
Monochloroacetic Acid
5.84 µg/L
No EPA limit set
Highest in the city: SEAWEST WATER SYSTEM · 38 people · 2019
2/29 SYR4
Cadmium
4.5 µg/L 90%
of the EPA limit 5 µg/L
Highest in the city: DOUBLE VIEW COMMUNITY CLUB · 47 people · 2013
1/29 SYR4
Selenium
2 µg/L 4%
of the EPA limit 50 µg/L
Highest in the city: TOWNSHIP 29 WATER ASSOCIATION · 42 people · 2017
3/29 SYR4
Dalapon
1.4 µg/L 0.7%
of the EPA limit 200 µg/L
Highest in the city: SEAWEST WATER SYSTEM · 38 people · 2019
1/29 SYR4
Combined Radium (-226 And -228)
0.5950 pCi/L 12%
of the EPA limit 5 pCi/L
Highest in the city: TOWNSHIP 29 WATER ASSOCIATION · 42 people · 2015
1/29 SYR4
Lead
0.0095 mg/L 63%
of the EPA limit 0.0150 mg/L
Main supplier: CAMANO CO-OP WATER & POWER CO · 1,071 people · 2025
Highest in the city: 0.0122 mg/L — SEAWEST WATER SYSTEM · 38 people · 2023
29/29 LCR
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 the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Mt Vernon

SupplierPopulation served
CAMANO CO-OP WATER & POWER CO 1,071
HILLCREST VILLAGE WATER CO INC 770
GREEN ISLAND HILLS WATER ASSN 265
CAMANO CITY COMMUNITY CLUB INC 246
UTSALADY HEIGHTS OWNERS ASSN 240
DRIFTWOOD SHORES WATER SYSTEM INC 222
BUENA VISTA COMMUNITY CLUB 200
HARRIS CUSTER ESTATES WATER ASSN 194
FINISTERRE HEIGHTS WATER SYSTEM 193
ARROWHEAD BEACH COOP WATER ASSOC 167
CAMANO SUNRISE WATER ASSN #2 122
O-ZI-YA Community Club 120
WIDARAMA BEACH WATER RIGHTS ASSN. 85
CAMANO SUNRISE WATER ASSN #1 76
POINT ALLEN WATER ASSOCIATION 65
FIELDS WATER ASSOCIATION 60
BEVERLY BEACH IMPROVEMENT CLUB 56
BAYSHORE WATER SYSTEM 56
UTSALADY POINT 54
CAMANO COLONY WATER SYSTEM INC 53
El Camano Community Club 49
DOUBLE VIEW COMMUNITY CLUB 47
North Beverly Beach Association 46
TOWNSHIP 29 WATER ASSOCIATION 42
CAMANO ISLAND SUMMIT ASSOC. 42
VIEWCREST WATER SYSTEM 39
SEAWEST WATER SYSTEM 38
SARATOGA SHORES COMMUNITY CLUB 35
BAKERVIEW TERRACE COMM CLUB 34

Frequently asked questions about Mt Vernon tap water

Is Mt Vernon tap water safe to drink?

EPA testing detected 26 contaminants in the water serving Mt Vernon. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Mt Vernon?

29 public water suppliers report drinking-water monitoring for Mt Vernon, Washington to the EPA. Each is listed above with its population served.

What contaminants are in Mt Vernon's water?

The contaminants EPA monitoring detected in Mt Vernon include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Cyanide. The full list, with the level at the main supplier and the data source, is in the table above.

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.