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Tap water quality report

Summit Water & Supply Co

EPA monitoring tested this supplier for 104 contaminants and detected 14. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

104
contaminants tested
14
detected
19,125
people served
12
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Private
Counties served
Pierce

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.

12
health-based violations
20
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 1998-11-01 → 1998-11-30
MCL Health-based Archived 1998-11-01 → 1998-11-30
MCL Health-based Archived 1998-11-01 → 1998-11-30
MCL Health-based Archived 1996-04-01 → 1996-04-30
MCL Health-based Archived 1994-07-01 → 1994-07-31
MCL Health-based Archived 1994-04-01 → 1994-04-30
MCL Health-based Archived 1993-05-01 → 1993-05-31
MCL Health-based Archived 1993-05-01 → 1993-05-31
MCL Health-based Archived 1993-04-01 → 1993-04-30
MCL Health-based Archived 1993-04-01 → 1993-04-30

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfpea 0.0031 µg/L 1/14 2023

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
3385.5 µg/L 34%
of the EPA limit 10000 µg/L
worst single sample: 3400 µg/L
62/78 SYR4 2012–2019
TTHM
5.82 µg/L 7.3%
of the EPA limit 80 µg/L
worst single sample: 12.8 µg/L
57/57 SYR4 2012–2019
Dibromochloromethane
2.465 µg/L
No EPA limit set
worst single sample: 4.5 µg/L
48/76 SYR4 2012–2019
Bromodichloromethane
1.86 µg/L
No EPA limit set
worst single sample: 2.6 µg/L
37/80 SYR4 2012–2019
Chloroform
1.42 µg/L
No EPA limit set
worst single sample: 1.7 µg/L
29/77 SYR4 2012–2019
Bromoform
1.375 µg/L
No EPA limit set
worst single sample: 5 µg/L
26/82 SYR4 2012–2019
Lead
0.0023 mg/L 15%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2025
Nitrate-Nitrite
2540 µg/L 25%
of the EPA limit 10000 µg/L
worst single sample: 2600 µg/L
5/8 SYR4 2012–2017
Arsenic
2 µg/L 20%
of the EPA limit 10 µg/L
 3/8 SYR4 2012–2017
Dichloroacetic Acid
3.09 µg/L
No EPA limit set
worst single sample: 3.1 µg/L
2/73 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
8.69 µg/L 14%
of the EPA limit 60 µg/L
worst single sample: 8.7 µg/L
2/71 SYR4 2012–2018
Trichloroacetic Acid
5.78 µg/L
No EPA limit set
worst single sample: 5.8 µg/L
2/73 SYR4 2012–2019
Lead
2 µg/L 13%
of the EPA limit 15 µg/L
 1/9 SYR4 2012–2017
90 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, TotalAsbestosAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneFluorideHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitritePfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Darryl Scott

Frequently asked questions about Summit Water & Supply Co

Is Summit Water & Supply Co tap water safe to drink?

EPA monitoring detected 14 contaminants in Summit Water & Supply Co'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 Summit Water & Supply Co's water?

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

How many people does Summit Water & Supply Co serve?

Summit Water & Supply Co reports serving 19,125 people in Washington, per its EPA record.

Has Summit Water & Supply Co had any water quality violations?

The EPA has 20 violations on file for Summit Water & Supply Co, of which 12 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.