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Tap water quality report

Williams Lake Road Subdivision

EPA monitoring tested this supplier for 53 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

53
contaminants tested
11
detected
40
people served
6
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Private
Counties served
Stevens

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.

6
health-based violations
17
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 1996-11-01 → 1996-11-30
MCL Health-based Archived 1996-11-01 → 1996-11-30
MCL Health-based Archived 1996-11-01 → 1996-11-30
MCL Health-based Archived 1995-10-01 → 1995-10-31
MCL Health-based Archived 1993-09-01 → 1993-09-30
MCL Health-based Archived 1993-09-01 → 1993-09-30
MR Monitoring Resolved 2005-01-01 → 2007-12-31
MR Monitoring Resolved 2005-01-01 → 2007-12-31
MR Monitoring Resolved 2005-01-01 → 2007-12-31
MR Monitoring Resolved 2005-01-01 → 2007-12-31

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
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 9/9 LCR 2023
Nitrate
3340 µg/L 33%
of the EPA limit 10000 µg/L
 8/28 SYR4 2012–2019
Combined Uranium
8.671 µg/L 29%
of the EPA limit 30 µg/L
worst single sample: 8.79 µg/L
3/3 SYR4 2012–2019
Gross Alpha, Excl. Radon And U
12.7895 pCi/L 85%
of the EPA limit 15 pCi/L
worst single sample: 12.91 pCi/L
2/2 SYR4 2012–2015
Antimony, Total
2.96 µg/L 49%
of the EPA limit 6 µg/L
 1/1 SYR4 2015
Arsenic
2.52 µg/L 25%
of the EPA limit 10 µg/L
 1/1 SYR4 2015
Barium
60.8 µg/L 3%
of the EPA limit 2000 µg/L
 1/1 SYR4 2015
Copper
5.51 µg/L 0.4%
of the EPA limit 1300 µg/L
 1/1 SYR4 2015
Chromium
1.59 µg/L 1.6%
of the EPA limit 100 µg/L
 1/1 SYR4 2015
Combined Radium (-226 And -228)
4.12 pCi/L 82%
of the EPA limit 5 pCi/L
 1/1 SYR4 2012
Fluoride
139 µg/L 3.5%
of the EPA limit 4000 µg/L
 1/1 SYR4 2015
42 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DBenzeneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCyanideCadmiumCarbon TetrachlorideChloroformDichloromethaneDalaponDibromochloromethaneDinosebEthylene DibromideEthylbenzeneLeadMercuryNitrate-NitriteNitritePentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Dawson Weilep

Frequently asked questions about Williams Lake Road Subdivision

Is Williams Lake Road Subdivision tap water safe to drink?

EPA monitoring detected 11 contaminants in Williams Lake Road Subdivision'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 Williams Lake Road Subdivision's water?

EPA monitoring detected Lead, Nitrate, Combined Uranium, Gross Alpha, Excl. Radon And U, Antimony, Total, and others. The full list with the level and data source for each is above.

How many people does Williams Lake Road Subdivision serve?

Williams Lake Road Subdivision reports serving 40 people in Washington, per its EPA record.

Has Williams Lake Road Subdivision had any water quality violations?

The EPA has 17 violations on file for Williams Lake Road Subdivision, of which 6 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.