← Moses Lake, WA

Tap water quality report

ZIP 98837 — Moses Lake, WA

EPA monitoring across the 1 water supplier serving ZIP 98837 in Moses Lake, WA detected 31 contaminants. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier below, with the EPA limit for each.

1
water supplier
32,428
people served
31
contaminants found

What was found in ZIP 98837

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

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
5650 µg/L 56%
of the EPA limit 10000 µg/L
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2019
1/1 SYR4
Nitrate-Nitrite
5598 µg/L 56%
of the EPA limit 10000 µg/L
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2019
1/1 SYR4
Fluoride
2819.5 µg/L 70%
of the EPA limit 4000 µg/L
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2019
1/1 SYR4
Barium
54.78 µg/L 2.7%
of the EPA limit 2000 µg/L
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2019
1/1 SYR4
Lithium
35.6 µg/L
No EPA limit set
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2025
1/1 UCMR-5
Copper
24.603 µg/L 1.9%
of the EPA limit 1300 µg/L
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2019
1/1 SYR4
TTHM
15.42 µg/L 19%
of the EPA limit 80 µg/L
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2019
1/1 SYR4
Bromoform
11.25 µg/L
No EPA limit set
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2019
1/1 SYR4
Lead
8.389 µg/L 56%
of the EPA limit 15 µg/L
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2019
1/1 SYR4
Trichloroethylene
4.878 µg/L 98%
of the EPA limit 5 µg/L
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2019
1/1 SYR4
1,1,2-Trichloroethane
3.9 µg/L 78%
of the EPA limit 5 µg/L
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
3.74 µg/L 6.2%
of the EPA limit 60 µg/L
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2018
1/1 SYR4
Arsenic
3.478 µg/L 35%
of the EPA limit 10 µg/L
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2019
1/1 SYR4
Dibromochloromethane
3.34 µg/L
No EPA limit set
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2019
1/1 SYR4
Chloroform
2.96 µg/L
No EPA limit set
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2019
1/1 SYR4
Dichloroacetic Acid
2.735 µg/L
No EPA limit set
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2019
1/1 SYR4
Bromodichloromethane
2.385 µg/L
No EPA limit set
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2019
1/1 SYR4
Dibromoacetic Acid
2.36 µg/L
No EPA limit set
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2019
1/1 SYR4
Chromium
1.7175 µg/L 1.7%
of the EPA limit 100 µg/L
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2019
1/1 SYR4
Trichloroacetic Acid
1.7 µg/L
No EPA limit set
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2019
1/1 SYR4
Thallium, Total
1.08 µg/L 54%
of the EPA limit 2 µg/L
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2019
1/1 SYR4
Selenium
1.062 µg/L 2.1%
of the EPA limit 50 µg/L
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2019
1/1 SYR4
cis-1,2-Dichloroethylene
0.7080 µg/L 1%
of the EPA limit 70 µg/L
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2019
1/1 SYR4
1,2-Dichloropropane
0.6000 µg/L 12%
of the EPA limit 5 µg/L
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2019
1/1 SYR4
Antimony, Total
0.2930 µg/L 4.9%
of the EPA limit 6 µg/L
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2019
1/1 SYR4
PFHXS
0.0541 µg/L
No EPA limit set
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2025
1/1 UCMR-5
PFOS
0.0522 µg/L
No EPA limit set
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2025
1/1 UCMR-5
Pfhxa
0.0073 µg/L
No EPA limit set
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2025
1/1 UCMR-5
Pfpes
0.0053 µg/L
No EPA limit set
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2025
1/1 UCMR-5
PFBS
0.0044 µg/L
No EPA limit set
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2025
1/1 UCMR-5
Lead
0.0032 mg/L 21%
of the EPA limit 0.0150 mg/L
Main supplier: MOSES LAKE CITY OF · 32,428 people · 2023
1/1 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.

Water suppliers serving ZIP 98837

SupplierStatePopulation served
MOSES LAKE CITY OF WA 32,428

Frequently asked questions about ZIP 98837 tap water

Is the tap water in ZIP 98837 safe to drink?

EPA testing detected 31 contaminants across the water suppliers serving ZIP 98837. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.

Which water suppliers serve ZIP 98837?

1 public water supplier report EPA drinking-water monitoring for ZIP 98837. Each is listed above with its population served.

What contaminants are in ZIP 98837's water?

EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Barium, Lithium, and others across this ZIP's suppliers. The full list with levels and sources is above.