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Sunlake Terrace Water Systems

EPA monitoring tested this supplier for 69 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

69
contaminants tested
8
detected
1,000
people served
1
health-based violations
Delaware rankingsLead in DelawarePFAS in Delaware
Water source
Ground water
Ownership
Private
Counties served
Polk

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.

1
health-based violations
40
violations on file
2
still open
ViolationTypeStatusPeriod
TT Health-based Unaddressed 2025-02-01
MON Monitoring Archived 2026-03-01 → 2026-03-31
MR Monitoring Archived 2026-03-01 → 2026-03-31
MON Monitoring Archived 2025-12-01 → 2025-12-31
MR Monitoring Archived 2025-12-01 → 2025-12-31
MON Monitoring Archived 2025-08-01 → 2025-08-31
MON Monitoring Archived 2025-08-01 → 2025-08-31
MR Monitoring Archived 2025-08-01 → 2025-08-31
MR Monitoring Archived 2025-08-01 → 2025-08-31
RPT Monitoring Unaddressed 2025-02-01

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
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 17/17 LCR 2024
TTHM
52.12 µg/L 65%
of the EPA limit 80 µg/L
worst single sample: 57 µg/L
17/18 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
53.4 µg/L 89%
of the EPA limit 60 µg/L
worst single sample: 73.4 µg/L
17/18 SYR4 2012–2019
Nitrate
3470 µg/L 35%
of the EPA limit 10000 µg/L
 4/16 SYR4 2012–2019
Barium
14.89 µg/L 0.7%
of the EPA limit 2000 µg/L
worst single sample: 14.9 µg/L
3/3 SYR4 2012–2018
Copper
1.2 µg/L 0.1%
of the EPA limit 1300 µg/L
 1/3 SYR4 2012–2018
Chromium
1.4 µg/L 1.4%
of the EPA limit 100 µg/L
 1/3 SYR4 2012–2018
Di(2-ethylhexyl) Phthalate
2.97 µg/L 50%
of the EPA limit 6 µg/L
 1/8 SYR4 2012–2019
61 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,3,7,8-TCDD2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneFluorideGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
YES COMMUNITIES
Phone
248-744-4211

Frequently asked questions about Sunlake Terrace Water Systems

Is Sunlake Terrace Water Systems tap water safe to drink?

EPA monitoring detected 8 contaminants in Sunlake Terrace Water Systems'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 Sunlake Terrace Water Systems's water?

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

How many people does Sunlake Terrace Water Systems serve?

Sunlake Terrace Water Systems reports serving 1,000 people in Delaware, per its EPA record.

Has Sunlake Terrace Water Systems had any water quality violations?

The EPA has 40 violations on file for Sunlake Terrace Water Systems, of which 1 is health-based (a contaminant limit or required treatment was breached) and 2 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.