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Tap water quality report

Plymouth Water District

EPA monitoring tested this supplier for 73 contaminants and detected 14. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

73
contaminants tested
14
detected
288
people served
23
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Local government
Counties served
Benton

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.

23
health-based violations
629
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2020-01-01 → 2020-12-31
MCL Health-based Resolved 2019-01-01 → 2019-12-31
MCL Health-based Resolved 2018-01-01 → 2018-12-31
MCL Health-based Resolved 2018-01-01 → 2018-12-31
MCL Health-based Resolved 2017-07-01 → 2017-09-30
MCL Health-based Resolved 2016-04-01 → 2016-06-30
MCL Health-based Resolved 2016-01-01 → 2016-12-31
MCL Health-based Archived 2000-11-01 → 2000-11-30
MCL Health-based Archived 2000-11-01 → 2000-11-30
MCL Health-based Archived 2000-11-01 → 2000-11-30

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 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
12970 µg/L 130%
of the EPA limit, at the 95th percentile of samples — 10000 µg/L
worst single sample: 13600 µg/L
30/32 SYR4 2012–2019
Lead
0.00060 mg/L 4%
of the EPA limit 0.0150 mg/L
 10/10 LCR 2024
Bromoform
11.12 µg/L
No EPA limit set
worst single sample: 11.4 µg/L
3/8 SYR4 2012–2019
TTHM
11.57 µg/L 14%
of the EPA limit 80 µg/L
worst single sample: 11.9 µg/L
3/3 SYR4 2012–2014
Arsenic
2 µg/L 20%
of the EPA limit 10 µg/L
 2/2 SYR4 2012–2017
Dibromoacetic Acid
1.865 µg/L
No EPA limit set
worst single sample: 1.9 µg/L
2/3 SYR4 2013–2017
Fluoride
1808 µg/L 45%
of the EPA limit 4000 µg/L
worst single sample: 1840 µg/L
2/2 SYR4 2012–2017
Nitrate-Nitrite
9635 µg/L 96%
of the EPA limit 10000 µg/L
worst single sample: 10000 µg/L
2/2 SYR4 2012–2017
Selenium
4.9 µg/L 9.8%
of the EPA limit 50 µg/L
worst single sample: 5 µg/L
2/2 SYR4 2012–2017
Total Haloacetic Acids (HAA5)
1.865 µg/L 3.1%
of the EPA limit 60 µg/L
worst single sample: 1.9 µg/L
2/3 SYR4 2013–2017
Barium
24 µg/L 1.2%
of the EPA limit 2000 µg/L
 1/2 SYR4 2012–2017
Chromium
2 µg/L 2%
of the EPA limit 100 µg/L
 1/2 SYR4 2012–2017
Dibromochloromethane
0.5000 µg/L
No EPA limit set
 1/8 SYR4 2012–2019
Tetrachloroethylene
0.6000 µg/L 12%
of the EPA limit 5 µg/L
 1/5 SYR4 2012–2019
59 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, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneChlorobenzeneCopperCyanideCadmiumCarbon TetrachlorideChlordaneChloroformDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDichloroacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitritePentachlorophenolPicloramSimazineStyreneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Jeff Weixel

Frequently asked questions about Plymouth Water District

Is Plymouth Water District tap water safe to drink?

EPA monitoring detected 14 contaminants in Plymouth Water District'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 Plymouth Water District's water?

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

How many people does Plymouth Water District serve?

Plymouth Water District reports serving 288 people in Washington, per its EPA record.

Has Plymouth Water District had any water quality violations?

The EPA has 629 violations on file for Plymouth Water District, of which 23 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.