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Tap water quality report

Yak Co - Crewport

EPA monitoring tested this supplier for 74 contaminants and detected 20. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

74
contaminants tested
20
detected
192
people served
2
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Local government
Counties served
Yakima

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.

2
health-based violations
105
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 1995-06-01 → 1995-06-30
MCL Health-based Archived 1993-12-01 → 1993-12-31
MR Monitoring Resolved 2024-01-01 → 2024-12-31
MON Monitoring Resolved 2023-11-01 → 2023-11-30
MR Monitoring Resolved 2019-10-01 → 2019-12-31
MR Monitoring Resolved 2019-10-01 → 2019-12-31
MR Monitoring Resolved 2019-10-01 → 2019-12-31
MR Monitoring Resolved 2019-10-01 → 2019-12-31
MR Monitoring Resolved 2019-10-01 → 2019-12-31
MR Monitoring Resolved 2019-10-01 → 2019-12-31

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
4311 µg/L 43%
of the EPA limit 10000 µg/L
worst single sample: 4480 µg/L
34/34 SYR4 2012–2019
Nitrate-Nitrite
4272 µg/L 43%
of the EPA limit 10000 µg/L
worst single sample: 4480 µg/L
17/17 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2023
1,1-Dichloroethylene
2.3685 µg/L 34%
of the EPA limit 7 µg/L
worst single sample: 2.4 µg/L
10/15 SYR4 2012–2019
Bromoform
20 µg/L
No EPA limit set
worst single sample: 22.8 µg/L
6/19 SYR4 2012–2019
TTHM
28.75 µg/L 36%
of the EPA limit 80 µg/L
worst single sample: 32.3 µg/L
6/6 SYR4 2013–2018
Bromodichloromethane
2.3115 µg/L
No EPA limit set
worst single sample: 2.49 µg/L
4/19 SYR4 2012–2019
Dibromoacetic Acid
3.31 µg/L
No EPA limit set
worst single sample: 3.4 µg/L
4/4 SYR4 2013–2018
Dibromochloromethane
7.525 µg/L
No EPA limit set
worst single sample: 7.9 µg/L
4/19 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
3.31 µg/L 5.5%
of the EPA limit 60 µg/L
worst single sample: 3.4 µg/L
4/4 SYR4 2013–2018
Arsenic
3.094 µg/L 31%
of the EPA limit 10 µg/L
worst single sample: 3.13 µg/L
2/2 SYR4 2016–2019
Barium
25.7545 µg/L 1.3%
of the EPA limit 2000 µg/L
worst single sample: 26.36 µg/L
2/2 SYR4 2016–2019
Copper
1.913 µg/L 0.1%
of the EPA limit 1300 µg/L
worst single sample: 1.93 µg/L
2/2 SYR4 2016–2019
Chloroform
1.0695 µg/L
No EPA limit set
worst single sample: 1.11 µg/L
2/19 SYR4 2012–2019
Chromium
3.2355 µg/L 3.2%
of the EPA limit 100 µg/L
worst single sample: 3.35 µg/L
2/2 SYR4 2016–2019
Fluoride
422.5 µg/L 11%
of the EPA limit 4000 µg/L
worst single sample: 430 µg/L
2/2 SYR4 2016–2019
Lead
0.3580 µg/L 2.4%
of the EPA limit 15 µg/L
worst single sample: 0.3700 µg/L
2/2 SYR4 2016–2019
Selenium
0.9170 µg/L 1.8%
of the EPA limit 50 µg/L
worst single sample: 0.9200 µg/L
2/2 SYR4 2016–2019
Thallium, Total
0.9745 µg/L 49%
of the EPA limit 2 µg/L
worst single sample: 1 µg/L
2/2 SYR4 2016–2019
Combined Radium (-226 And -228)
1.2 pCi/L 24%
of the EPA limit 5 pCi/L
 1/1 SYR4 2017
54 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDichloroacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitritePentachlorophenolPicloramSimazineStyreneTetrachloroethyleneTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Gene Buermann

Frequently asked questions about Yak Co - Crewport

Is Yak Co - Crewport tap water safe to drink?

EPA monitoring detected 20 contaminants in Yak Co - Crewport'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 Yak Co - Crewport's water?

EPA monitoring detected Nitrate, Nitrate-Nitrite, Lead, 1,1-Dichloroethylene, Bromoform, and others. The full list with the level and data source for each is above.

How many people does Yak Co - Crewport serve?

Yak Co - Crewport reports serving 192 people in Washington, per its EPA record.

Has Yak Co - Crewport had any water quality violations?

The EPA has 105 violations on file for Yak Co - Crewport, of which 2 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.