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Tap water quality report

Terrace Square Apts

EPA monitoring tested this supplier for 69 contaminants and detected 14. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

69
contaminants tested
14
detected
45
people served
0
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Private
Counties served
Hillsborough

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.

0
health-based violations
28
violations on file
8
still open
ViolationTypeStatusPeriod
MR Monitoring Archived 2023-01-01 → 2024-12-31
MR Monitoring Archived 2023-01-01 → 2024-12-31
MR Monitoring Archived 2023-01-01 → 2024-12-31
MR Monitoring Archived 2023-01-01 → 2024-12-31
MR Monitoring Archived 2023-01-01 → 2024-12-31
MR Monitoring Archived 2023-01-01 → 2024-12-31
MR Monitoring Resolved 2020-01-01 → 2021-12-31
MR Monitoring Resolved 2020-01-01 → 2021-12-31
MR Monitoring Resolved 2020-01-01 → 2021-12-31
MR Monitoring Resolved 2020-01-01 → 2021-12-31

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 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
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2024
Nitrate
300 µg/L 3%
of the EPA limit 10000 µg/L
 6/18 SYR4 2012–2019
Barium
100 µg/L 5%
of the EPA limit 2000 µg/L
 3/3 SYR4 2012–2018
Copper
7.2 µg/L 0.6%
of the EPA limit 1300 µg/L
 3/3 SYR4 2012–2018
Total Haloacetic Acids (HAA5)
9.92 µg/L 17%
of the EPA limit 60 µg/L
 3/4 SYR4 2012–2018
Arsenic
0.2000 µg/L 2%
of the EPA limit 10 µg/L
 2/3 SYR4 2012–2018
Cadmium
0.3000 µg/L 6%
of the EPA limit 5 µg/L
 2/3 SYR4 2012–2018
Fluoride
120 µg/L 3%
of the EPA limit 4000 µg/L
 2/6 SYR4 2012–2018
Lead
1.4 µg/L 9.3%
of the EPA limit 15 µg/L
 2/3 SYR4 2012–2018
Selenium
1.8 µg/L 3.6%
of the EPA limit 50 µg/L
 2/3 SYR4 2012–2018
TTHM
11.2 µg/L 14%
of the EPA limit 80 µg/L
 2/4 SYR4 2012–2018
Thallium, Total
0.1000 µg/L 5%
of the EPA limit 2 µg/L
 2/3 SYR4 2012–2018
Antimony, Total
0.1000 µg/L 1.7%
of the EPA limit 6 µg/L
 1/3 SYR4 2012–2018
Combined Uranium
0.8186 µg/L 2.7%
of the EPA limit 30 µg/L
 1/1 SYR4 2015
55 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-DAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
JIAN MING ZHOU
Phone
425-533-3890

Frequently asked questions about Terrace Square Apts

Is Terrace Square Apts tap water safe to drink?

EPA monitoring detected 14 contaminants in Terrace Square Apts'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 Terrace Square Apts's water?

EPA monitoring detected Lead, Nitrate, Barium, Copper, Total Haloacetic Acids (HAA5), and others. The full list with the level and data source for each is above.

How many people does Terrace Square Apts serve?

Terrace Square Apts reports serving 45 people in Washington, per its EPA record.

Has Terrace Square Apts had any water quality violations?

The EPA has 28 violations on file for Terrace Square Apts, of which 0 are health-based (a contaminant limit or required treatment was breached) and 8 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.