Is This In Your Water?← Maryland index
Maryland · ZIP 21550 · EPA MD0110021

Is this in Oakland's water?

Town of Deer Park · serves 272 people · groundwater · 136 connections
3
violations on the federal EPA record
2
health-based — a protective limit exceeded
272
people drink this water every day

This system has 2 health-based violations on the EPA record — involving Lead & Copper Rule, Surface Water Treatment. A limit meant to protect health, exceeded.

Lead & Copper Rule›

The Lead & Copper Rule requires utilities to test water at customer taps for lead and copper — metals that enter water from pipes and plumbing, not the source. Lead harms brain development in children; no level is considered safe.

Read the rule → EPA · Lead & Copper Rule
Surface Water Treatment›

The Surface Water Treatment Rules require utilities using surface water (or groundwater under its influence) to filter and disinfect against microbes like Giardia, Legionella and viruses.

Read the rule → EPA · Surface Water Treatment Rules

The federal record.

HEALTHtreatment-technique violationLead & Copper Rule2005›

The utility failed to carry out a treatment process the rule requires — the safeguard itself wasn't run properly.

Lead & Copper Rule: The Lead & Copper Rule requires utilities to test water at customer taps for lead and copper — metals that enter water from pipes and plumbing, not the source. Lead harms brain development in children; no level is considered safe.

Read the rule → EPA · Lead & Copper Rule
Who is responsibleTown of Deer Park · attn Griffith, Brandon · 301-334-7465 — the utility is required to answer questions about its record. Ask them about it.Their office: 203 S 4th St, Oakland ↗
RECORDother violationSurface Water Treatment2008›

A violation on the federal record outside the standard categories.

Surface Water Treatment: The Surface Water Treatment Rules require utilities using surface water (or groundwater under its influence) to filter and disinfect against microbes like Giardia, Legionella and viruses.

Read the rule → EPA · Surface Water Treatment Rules
Who is responsibleTown of Deer Park · attn Griffith, Brandon · 301-334-7465 — the utility is required to answer questions about its record. Ask them about it.Their office: 203 S 4th St, Oakland ↗
HEALTHtreatment-technique violationLead & Copper Rule2006›

The utility failed to carry out a treatment process the rule requires — the safeguard itself wasn't run properly.

Lead & Copper Rule: The Lead & Copper Rule requires utilities to test water at customer taps for lead and copper — metals that enter water from pipes and plumbing, not the source. Lead harms brain development in children; no level is considered safe.

Read the rule → EPA · Lead & Copper Rule
Who is responsibleTown of Deer Park · attn Griffith, Brandon · 301-334-7465 — the utility is required to answer questions about its record. Ask them about it.Their office: 203 S 4th St, Oakland ↗

Source: U.S. EPA Safe Drinking Water Information System (SDWIS), system MD0110021. “Compliant” means clearing federal limits — many unchanged for ~20 years. Health guidelines from independent scientists are often stricter. Results vary by home, plumbing and date.

Fix it, honestly.

Dissolved metals · nitrate

Reverse osmosis

NSF-58 certified under-sink RO — the only tech that broadly removes dissolved contaminants at the tap.

Chlorine · taste · odor

Catalytic carbon

NSF-42 whole-house carbon cuts chlorine, chloramine and the pool-water taste.

First step

Filter bottle

Certified grab-and-go protection while you decide on the whole-home fix.

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