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Tap water quality report

Cross Valley Water District

EPA monitoring tested this supplier for 89 contaminants and detected 22. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

89
contaminants tested
22
detected
24,695
people served
1
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
SWP
Ownership
Local government
Counties served
Snohomish

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.

1
health-based violations
34
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 1993-07-01 → 1993-07-31
MR Monitoring Archived 2026-01-01 → 2026-03-31
MR Monitoring Archived 2026-01-01 → 2026-03-31
MR Monitoring Resolved 2020-07-01 → 2020-09-30
MR Monitoring Resolved 2020-07-01 → 2020-09-30
Other Monitoring Resolved 2017-07-01
Other Monitoring Resolved 2015-07-01
MR Monitoring Archived 2008-01-01 → 2010-12-31
MR Monitoring Archived 2008-01-01 → 2010-12-31
MR Monitoring Archived 2008-01-01 → 2010-12-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFBS 0.0094 µg/L 2/14 2025
Pfhxa 0.0064 µg/L 2/14 2025
Pfpea 0.0049 µg/L 2/14 2025

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
TTHM
53.2 µg/L 67%
of the EPA limit 80 µg/L
worst single sample: 71.4 µg/L
136/136 SYR4 2012–2019
Chloroform
51.19 µg/L
No EPA limit set
worst single sample: 68.3 µg/L
135/144 SYR4 2012–2019
Trichloroacetic Acid
25.65 µg/L
No EPA limit set
worst single sample: 30.3 µg/L
131/131 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
44.35 µg/L 74%
of the EPA limit 60 µg/L
worst single sample: 50.8 µg/L
130/130 SYR4 2012–2019
Bromodichloromethane
5 µg/L
No EPA limit set
worst single sample: 5.8 µg/L
127/136 SYR4 2012–2019
Dichloroacetic Acid
17.67 µg/L
No EPA limit set
worst single sample: 20.1 µg/L
127/128 SYR4 2012–2019
Nitrate
3520 µg/L 35%
of the EPA limit 10000 µg/L
worst single sample: 3680 µg/L
84/114 SYR4 2012–2019
Dibromochloromethane
3.975 µg/L
No EPA limit set
worst single sample: 4.7 µg/L
34/145 SYR4 2012–2019
Barium
7 µg/L 0.4%
of the EPA limit 2000 µg/L
worst single sample: 10 µg/L
22/22 SYR4 2012–2019
Arsenic
5.6 µg/L 56%
of the EPA limit 10 µg/L
worst single sample: 9 µg/L
18/22 SYR4 2012–2019
Dibromoacetic Acid
12.975 µg/L
No EPA limit set
worst single sample: 13.4 µg/L
18/131 SYR4 2012–2019
Monochloroacetic Acid
4.04 µg/L
No EPA limit set
worst single sample: 4.2 µg/L
17/128 SYR4 2012–2019
Nitrate-Nitrite
3537 µg/L 35%
of the EPA limit 10000 µg/L
worst single sample: 3600 µg/L
15/23 SYR4 2012–2019
Bromoform
0.6000 µg/L
No EPA limit set
 11/145 SYR4 2012–2019
Fluoride
190 µg/L 4.8%
of the EPA limit 4000 µg/L
 9/22 SYR4 2012–2019
Chromium
2 µg/L 2%
of the EPA limit 100 µg/L
 7/22 SYR4 2012–2019
Lead
0.0031 mg/L 21%
of the EPA limit 0.0150 mg/L
 6/6 LCR 2024
Copper
9.6 µg/L 0.7%
of the EPA limit 1300 µg/L
worst single sample: 10 µg/L
3/22 SYR4 2012–2019
Lead
3 µg/L 20%
of the EPA limit 15 µg/L
 1/22 SYR4 2012–2019
67 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-PF3ONSAdonaAntimony, TotalAsbestosBenzeneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbon TetrachlorideDichloromethaneDalaponDinosebEthylene DibromideEthylbenzeneGross Beta Particle ActivityHfpo-DaMercuryMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitritePfbaPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Mike Johnson

Frequently asked questions about Cross Valley Water District

Is Cross Valley Water District tap water safe to drink?

EPA monitoring detected 22 contaminants in Cross Valley Water District'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 Cross Valley Water District's water?

EPA monitoring detected TTHM, Chloroform, Trichloroacetic Acid, Total Haloacetic Acids (HAA5), Bromodichloromethane, and others. The full list with the level and data source for each is above.

How many people does Cross Valley Water District serve?

Cross Valley Water District reports serving 24,695 people in Washington, per its EPA record.

Has Cross Valley Water District had any water quality violations?

The EPA has 34 violations on file for Cross Valley Water District, of which 1 is 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.