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Tap water quality report

Lake Limerick Water

EPA monitoring tested this supplier for 50 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

50
contaminants tested
8
detected
2,148
people served
3
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Private
Counties served
Mason

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.

3
health-based violations
422
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2006-11-01 → 2006-11-30
MCL Health-based Archived 1993-08-01 → 1993-08-31
MCL Health-based Archived 1993-05-01 → 1993-05-31
Other Monitoring Resolved 2024-07-01
Other Monitoring Resolved 2023-07-01
MON Monitoring Resolved 2022-11-01 → 2022-11-30
MON Monitoring Resolved 2022-10-01 → 2022-10-31
MR Monitoring Resolved 2020-01-01 → 2020-12-31
Other Monitoring Resolved 2016-07-01
MR Monitoring Resolved 2008-01-01 → 2010-12-31

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
900 µg/L 9%
of the EPA limit 10000 µg/L
worst single sample: 1000 µg/L
56/110 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2023
Lead
2.34 µg/L 16%
of the EPA limit 15 µg/L
worst single sample: 2.4 µg/L
2/8 SYR4 2016–2018
Nitrate-Nitrite
827 µg/L 8.3%
of the EPA limit 10000 µg/L
worst single sample: 860 µg/L
2/8 SYR4 2016–2018
Arsenic
1 µg/L 10%
of the EPA limit 10 µg/L
 1/8 SYR4 2016–2018
Copper
1 µg/L 0.1%
of the EPA limit 1300 µg/L
 1/8 SYR4 2016–2018
Chromium
3 µg/L 3%
of the EPA limit 100 µg/L
 1/8 SYR4 2016–2018
Selenium
1 µg/L 2%
of the EPA limit 50 µg/L
 1/8 SYR4 2016–2018
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-DAntimony, TotalBariumBenzeneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCyanideCadmiumCarbon TetrachlorideChloroformDichloromethaneDalaponDibromochloromethaneDinosebEthylene DibromideEthylbenzeneFluorideMercuryNitritePentachlorophenolPicloramStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Christopher McMullen

Frequently asked questions about Lake Limerick Water

Is Lake Limerick Water tap water safe to drink?

EPA monitoring detected 8 contaminants in Lake Limerick Water'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 Lake Limerick Water's water?

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

How many people does Lake Limerick Water serve?

Lake Limerick Water reports serving 2,148 people in Washington, per its EPA record.

Has Lake Limerick Water had any water quality violations?

The EPA has 422 violations on file for Lake Limerick Water, of which 3 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.