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Tap water quality report

Pud #1 of Asotin County

EPA monitoring tested this supplier for 73 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

73
contaminants tested
10
detected
21,930
people served
46
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Local government
Counties served
Asotin

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.

46
health-based violations
133
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2000-09-01 → 2000-09-30
MCL Health-based Archived 2000-09-01 → 2000-09-30
MCL Health-based Archived 2000-09-01 → 2000-09-30
MCL Health-based Archived 2000-08-01 → 2000-08-31
MCL Health-based Archived 2000-08-01 → 2000-08-31
MCL Health-based Archived 2000-08-01 → 2000-08-31
MCL Health-based Archived 2000-07-01 → 2000-07-31
MCL Health-based Archived 2000-07-01 → 2000-07-31
MCL Health-based Archived 2000-07-01 → 2000-07-31
MCL Health-based Archived 2000-07-01 → 2000-07-31

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
Nitrate
1620 µg/L 16%
of the EPA limit 10000 µg/L
 48/92 SYR4 2012–2019
Bromoform
4.962 µg/L
No EPA limit set
worst single sample: 5.17 µg/L
29/44 SYR4 2012–2019
TTHM
8.368 µg/L 10%
of the EPA limit 80 µg/L
worst single sample: 8.78 µg/L
29/29 SYR4 2012–2019
Dibromochloromethane
2.6695 µg/L
No EPA limit set
worst single sample: 2.97 µg/L
28/45 SYR4 2012–2019
Lead
0.0035 mg/L 23%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2023
Bromodichloromethane
0.8440 µg/L
No EPA limit set
worst single sample: 0.8800 µg/L
9/44 SYR4 2012–2019
Lithium
43.8 µg/L
No EPA limit set
 6/6 UCMR-5 2025
Dibromoacetic Acid
1.1065 µg/L
No EPA limit set
worst single sample: 1.11 µg/L
2/32 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
1.1065 µg/L 1.8%
of the EPA limit 60 µg/L
worst single sample: 1.11 µg/L
2/32 SYR4 2012–2019
Chloroform
0.2600 µg/L
No EPA limit set
 1/45 SYR4 2012–2019
63 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-PF3ONSAdonaAsbestosBenzeneChlorobenzeneCarbon TetrachlorideDichloromethaneDalaponDichloroacetic AcidDinosebEthylene DibromideEthylbenzeneHfpo-DaMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramStyreneTetrachloroethyleneTolueneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Timothy Simpson

Frequently asked questions about Pud #1 of Asotin County

Is Pud #1 of Asotin County tap water safe to drink?

EPA monitoring detected 10 contaminants in Pud #1 of Asotin County'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 Pud #1 of Asotin County's water?

EPA monitoring detected Nitrate, Bromoform, TTHM, Dibromochloromethane, Lead, and others. The full list with the level and data source for each is above.

How many people does Pud #1 of Asotin County serve?

Pud #1 of Asotin County reports serving 21,930 people in Washington, per its EPA record.

Has Pud #1 of Asotin County had any water quality violations?

The EPA has 133 violations on file for Pud #1 of Asotin County, of which 46 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.