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Tap water quality report

Shelton, WA

EPA monitoring detected 23 contaminants across the 40 water suppliers serving Shelton. 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.

40
water suppliers
34,854
people served
23
contaminants found
Washington rankings Lead in Washington PFAS in Washington

What was found in Shelton'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
310 µg/L 3.1%
of the EPA limit 10000 µg/L
Main supplier: SHELTON CITY OF · 15,089 people · 2019
Highest in the city: 7200 µg/L — EVERGREEN MOBILE HOMEOWNERS CO-OP · 140 people · 2019
23/40 SYR4
Nitrate-Nitrite
310 µg/L 3.1%
of the EPA limit 10000 µg/L
Main supplier: SHELTON CITY OF · 15,089 people · 2018
Highest in the city: 7200 µg/L — EVERGREEN MOBILE HOMEOWNERS CO-OP · 140 people · 2019
14/40 SYR4
Copper
919 µg/L 71%
of the EPA limit 1300 µg/L
Highest in the city: SQUAXIN CONSOLIDATED · 1,500 people · 2019
6/40 SYR4
Barium
456 µg/L 23%
of the EPA limit 2000 µg/L
Highest in the city: WASHINGTON CORRECTIONS CENTER · 2,223 people · 2015
7/40 SYR4
Nitrite
190 µg/L 19%
of the EPA limit 1000 µg/L
Highest in the city: SQUAXIN CONSOLIDATED · 1,500 people · 2018
2/40 SYR4
TTHM
19.643 µg/L 25%
of the EPA limit 80 µg/L
Main supplier: SHELTON CITY OF · 15,089 people · 2019
Highest in the city: 75.21 µg/L — TIMBERLAKE COMMUNITY CLUB INC · 2,337 people · 2019
12/40 SYR4
Chloroform
14.496 µg/L
No EPA limit set
Main supplier: SHELTON CITY OF · 15,089 people · 2019
Highest in the city: 75.2 µg/L — LAKEWOOD HEIGHTS · 170 people · 2019
12/40 SYR4
Lead
34.4 µg/L 229%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Highest in the city: OLYMPIC VISTA CLUB COMMUNITY WATER · 41 people · 2017
11/40 SYR4
Total Haloacetic Acids (HAA5)
7.8225 µg/L 13%
of the EPA limit 60 µg/L
Main supplier: SHELTON CITY OF · 15,089 people · 2019
Highest in the city: 20.14 µg/L — TIMBERLAKE COMMUNITY CLUB INC · 2,337 people · 2018
8/40 SYR4
Arsenic
19.5 µg/L 195%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
Highest in the city: HARTSTENE POINTE · 460 people · 2016
9/40 SYR4
Trichloroacetic Acid
3.4069 µg/L
No EPA limit set
Main supplier: SHELTON CITY OF · 15,089 people · 2019
Highest in the city: 14.875 µg/L — TIMBERLAKE COMMUNITY CLUB INC · 2,337 people · 2019
7/40 SYR4
Monochloroacetic Acid
8.5 µg/L
No EPA limit set
Main supplier: SHELTON CITY OF · 15,089 people · 2019
2/40 SYR4
Dichloroacetic Acid
3.584 µg/L
No EPA limit set
Main supplier: SHELTON CITY OF · 15,089 people · 2019
Highest in the city: 7.425 µg/L — HARTSTENE POINTE · 460 people · 2018
8/40 SYR4
Chromium
6 µg/L 6%
of the EPA limit 100 µg/L
Highest in the city: MINERVA TERRACE · 85 people · 2017
7/40 SYR4
Bromodichloromethane
3.6675 µg/L
No EPA limit set
Main supplier: SHELTON CITY OF · 15,089 people · 2019
Highest in the city: 5.17 µg/L — LAKE ARROWHEAD · 343 people · 2017
8/40 SYR4
Bromoform
1.6935 µg/L
No EPA limit set
Main supplier: SHELTON CITY OF · 15,089 people · 2019
Highest in the city: 4.3 µg/L — TIMBERLAKE COMMUNITY CLUB INC · 2,337 people · 2019
3/40 SYR4
Selenium
3.895 µg/L 7.8%
of the EPA limit 50 µg/L
Main supplier: SHELTON CITY OF · 15,089 people · 2018
4/40 SYR4
Dibromochloromethane
2.74 µg/L
No EPA limit set
Main supplier: SHELTON CITY OF · 15,089 people · 2019
6/40 SYR4
Combined Radium (-226 And -228)
2.3982 pCi/L 48%
of the EPA limit 5 pCi/L
Highest in the city: SQUAXIN CONSOLIDATED · 1,500 people · 2019
2/40 SYR4
Dibromoacetic Acid
1.3 µg/L
No EPA limit set
Highest in the city: SQUAXIN CONSOLIDATED · 1,500 people · 2019
1/40 SYR4
Dichloromethane
0.8400 µg/L 17%
of the EPA limit 5 µg/L
Highest in the city: HOODSPORT · 1,853 people · 2016
1/40 SYR4
Toluene
0.7300 µg/L 0.1%
of the EPA limit 1000 µg/L
Highest in the city: WASHINGTON CORRECTIONS CENTER · 2,223 people · 2019
1/40 SYR4
Lead
0.0018 mg/L 12%
of the EPA limit 0.0150 mg/L
Main supplier: SHELTON CITY OF · 15,089 people · 2024
Highest in the city: 0.0085 mg/L — HARTSTENE POINTE · 460 people · 2024
40/40 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 Shelton

SupplierPopulation served
SHELTON CITY OF 15,089
TIMBERLAKE COMMUNITY CLUB INC 2,337
WASHINGTON CORRECTIONS CENTER 2,223
LAKE LIMERICK WATER 2,148
HOODSPORT 1,853
SQUAXIN CONSOLIDATED 1,500
Shorecrest Estates Water Co 1,321
BEARDS COVE 1,100
FAWN LAKE MAINTENANCE COMM 1,044
OAK PARK 695
TWANOH FALLS BEACH CLUB 481
HARTSTENE POINTE 460
PORT OF ALLYN 397
HOOD CANAL 368
Tahuya River Valley Water District 367
LAKE ARROWHEAD 343
EMERALD LAKE 331
RUSTLEWOOD 322
ISLAND LAKE MANOR 233
TRAILS END WATER DISTRICT 211
HIGHLAND PARK 180
LAKEWOOD HEIGHTS 170
RAINBOW LAKE 168
PIRATES COVE COUNTRY CLUB 168
BEACON POINT COMMUNITY CLUB 158
SHADOWOOD 154
DAYTON TRAILS 148
EVERGREEN MOBILE HOMEOWNERS CO-OP 140
SHORE HILL 101
HARSTENE RETREAT 88
MINERVA TERRACE 85
RAE LAKE 73
MADRONA PARK 73
PEBBLE BEACH 64
HAMMA RIDGE 63
Ripplewood Tracts 45
Allyn Carey 45
OLYMPIC VISTA CLUB COMMUNITY WATER 41
KAMILCHE POINT COMMUNITY CLUB 39
Queen Anne Water Works LLC 28

Frequently asked questions about Shelton tap water

Is Shelton tap water safe to drink?

EPA testing detected 23 contaminants in the water serving Shelton. 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 Shelton?

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

What contaminants are in Shelton's water?

The contaminants EPA monitoring detected in Shelton include Nitrate, Nitrate-Nitrite, Copper, Barium, Nitrite. 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.