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Tap water quality report

Olalla

EPA monitoring tested this supplier for 63 contaminants and detected 3. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

63
contaminants tested
3
detected
239
people served
8
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Private
Counties served
Kitsap

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.

8
health-based violations
12
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 1995-09-01 → 1995-09-30
MCL Health-based Archived 1995-08-01 → 1995-08-31
MCL Health-based Archived 1993-09-01 → 1993-09-30
MCL Health-based Archived 1993-08-01 → 1993-08-31
MCL Health-based Archived 1993-07-01 → 1993-07-31
MCL Health-based Archived 1992-09-01 → 1992-09-30
MCL Health-based Archived 1992-09-01 → 1992-09-30
MCL Health-based Archived 1992-09-01 → 1992-09-30
Other Monitoring Resolved 2020-07-01
MR Monitoring Archived 2008-04-01 → 2008-06-30

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Lead
0.00060 mg/L 4%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2024
Arsenic
4 µg/L 40%
of the EPA limit 10 µg/L
 4/4 SYR4 2014–2017
Barium
3 µg/L 0.2%
of the EPA limit 2000 µg/L
 2/4 SYR4 2014–2017
60 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, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCopperCyanideCadmiumCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebEndrinEthylbenzeneFluorideHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNitrateNitrate-NitriteNitritePentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
James Jensen

Frequently asked questions about Olalla

Is Olalla tap water safe to drink?

EPA monitoring detected 3 contaminants in Olalla'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 Olalla's water?

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

How many people does Olalla serve?

Olalla reports serving 239 people in Washington, per its EPA record.

Has Olalla had any water quality violations?

The EPA has 12 violations on file for Olalla, of which 8 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.