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Tap water quality report

Prospect Heights Comm Water Assn

EPA monitoring tested this supplier for 49 contaminants and detected 2. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

49
contaminants tested
2
detected
40
people served
6
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Private
Counties served
Walla Walla

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.

6
health-based violations
149
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2017-12-01 → 2017-12-31
MCL Health-based Archived 2000-05-01 → 2000-05-31
MCL Health-based Archived 2000-05-01 → 2000-05-31
MCL Health-based Archived 2000-05-01 → 2000-05-31
MCL Health-based Archived 1993-09-01 → 1993-09-30
MCL Health-based Archived 1993-09-01 → 1993-09-30
MR Monitoring Archived 2023-01-01 → 2025-12-31
MR Monitoring Archived 2023-01-01 → 2025-12-31
MR Monitoring Archived 2023-01-01 → 2025-12-31
MR Monitoring Archived 2023-01-01 → 2025-12-31

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 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
5000 µg/L 50%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Lead
0.0150 mg/L 100%
of the EPA limit 0.0150 mg/L
 11/11 LCR 2024
47 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAtrazineBhc-GammaBenzeneBenzo(A)PyreneBromodichloromethaneBromoformChlorobenzeneCarbon TetrachlorideChlordaneChloroformDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Alfred Cummins

Frequently asked questions about Prospect Heights Comm Water Assn

Is Prospect Heights Comm Water Assn tap water safe to drink?

EPA monitoring detected 2 contaminants in Prospect Heights Comm Water Assn'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 Prospect Heights Comm Water Assn's water?

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

How many people does Prospect Heights Comm Water Assn serve?

Prospect Heights Comm Water Assn reports serving 40 people in Washington, per its EPA record.

Has Prospect Heights Comm Water Assn had any water quality violations?

The EPA has 149 violations on file for Prospect Heights Comm Water Assn, of which 6 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.