Tap WaterIndex

← Washington

Tap water quality report

Arlington Heights Water Co Inc

EPA monitoring tested this supplier for 56 contaminants and detected 9. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

56
contaminants tested
9
detected
57
people served
0
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Private
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.

0
health-based violations
42
violations on file
0
still open
ViolationTypeStatusPeriod
Other Monitoring Resolved 2025-07-01
MON Monitoring Resolved 2024-10-01 → 2024-10-31
Other Monitoring Resolved 2023-07-01
MON Monitoring Resolved 2022-04-01 → 2022-04-30
MR Monitoring Resolved 2022-01-01 → 2022-12-31
MR Monitoring Resolved 2020-01-01 → 2022-12-31
MR Monitoring Resolved 2020-01-01 → 2022-12-31
MON Monitoring Resolved 2018-08-01 → 2018-08-31
MR Monitoring Resolved 2018-01-01 → 2018-12-31
MR Monitoring Resolved 2016-01-01 → 2018-12-31

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
2330 µg/L 23%
of the EPA limit 10000 µg/L
 18/18 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 6/6 LCR 2023
TTHM
1.685 µg/L 2.1%
of the EPA limit 80 µg/L
worst single sample: 1.7 µg/L
4/4 SYR4 2012–2016
Bromodichloromethane
0.7900 µg/L
No EPA limit set
worst single sample: 0.8000 µg/L
3/6 SYR4 2012–2019
Chloroform
0.9000 µg/L
No EPA limit set
 3/6 SYR4 2012–2019
Barium
5 µg/L 0.3%
of the EPA limit 2000 µg/L
 1/1 SYR4 2017
Chromium
2 µg/L 2%
of the EPA limit 100 µg/L
 1/1 SYR4 2017
Dibromochloromethane
0.5000 µg/L
No EPA limit set
 1/6 SYR4 2012–2019
Nitrate-Nitrite
1830 µg/L 18%
of the EPA limit 10000 µg/L
 1/1 SYR4 2017
47 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicBenzeneBeryllium, TotalBromoformChlorobenzeneCopperCyanideCadmiumCarbon TetrachlorideDichloromethaneDalaponDibromoacetic AcidDichloroacetic AcidDinosebEthylbenzeneFluorideGross Beta Particle ActivityLeadMercuryMonobromoacetic AcidMonochloroacetic AcidNitritePentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)Trichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Mike Sheeler

Frequently asked questions about Arlington Heights Water Co Inc

Is Arlington Heights Water Co Inc tap water safe to drink?

EPA monitoring detected 9 contaminants in Arlington Heights Water Co Inc'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 Arlington Heights Water Co Inc's water?

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

How many people does Arlington Heights Water Co Inc serve?

Arlington Heights Water Co Inc reports serving 57 people in Washington, per its EPA record.

Has Arlington Heights Water Co Inc had any water quality violations?

The EPA has 42 violations on file for Arlington Heights Water Co Inc, of which 0 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.